hybridfree/eevblog-posts huggingface dataset:
EEVblog 1397 - DC Voltage & Current Source Theory - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: June 03, 2021, 11:21:40 pm
content: Electronics fundamentals video. Basic DC Voltage and Current Source theory.Thevenin and Norton Theorms.

author: ucanel
author_rank: Regular Contributor
timestamp: June 03, 2021, 11:31:36 pm
content: Am i too early, it says "this video is hidden" .Edit:It is good now.

author: julian1
author_rank: Frequent Contributor
timestamp: June 03, 2021, 11:47:25 pm
content: Odysee looks good,https://odysee.com/@eevblog:7/eevblog-1397-dc-voltage-current-source:9

author: JustMeHere
author_rank: Frequent Contributor
timestamp: June 04, 2021, 12:44:08 am
content: Quote from: ucanel on June 03, 2021, 11:31:36 pmIt was public an hour or so ago.

author: JoeyG
author_rank: Regular Contributor
timestamp: June 04, 2021, 04:16:53 am
content: Why not do some spice models and test them

author: Lucky-Luka
author_rank: Unknown
timestamp: June 04, 2021, 03:18:01 pm
content: Quote from: julian1 on June 03, 2021, 11:47:25 pmThe link doesn't work for me.

author: step
author_rank: Newbie
timestamp: June 04, 2021, 06:14:12 pm
content: Works fine here:https://odysee.com/@eevblog:7/eevblog-1397-dc-voltage-current-source-2:3By the way we don't spell the 'h' in Thévenin. It's like Tévenin

author: rstofer
author_rank: Super Contributor
timestamp: June 07, 2021, 01:22:46 am
content: I really like the Fundamentals videos and this one is no exception.Is there a 'Fundamentals playlist' somewhere? Wouldn't it be cool if the playlist was in the same order as a Uni course in DC circuits. Ohm's Law, Thevenin, Norton, Kirchhoff, ... (as I recall from about 50 years ago...)Then I would want AC Circuits, active circuits and so on. Essentially a 4 year program. for the cost of bandwidth.

author: EEVblog
author_rank: Unknown
timestamp: June 07, 2021, 05:34:51 am
content: Quote from: rstofer on June 07, 2021, 01:22:46 amGIven that I am kinda following a complete DC/AC learning path here, I have thought about maybe a page on my website that lists them all in order.

author: rstofer
author_rank: Super Contributor
timestamp: June 07, 2021, 06:57:42 am
content: Quote from: EEVblog on June 07, 2021, 05:34:51 amThat would be outstanding! It would really help newcomers learn the material in a traditional sequence.

author: dougg
author_rank: Regular Contributor
timestamp: June 08, 2021, 02:11:39 am
content: Quote from: step on June 04, 2021, 06:14:12 pmWikipedia has a rendering of the original paper, "EXTENSION DE LA LOI D'OHM" and he (or the publisher) spelt (not spelled) his name with a "h". When I worked in France a while back, I tried to use the word "malcontent" and was told that word hadn't been used for several hundred yearsI got a more positive reaction with the description of our common enemy: perfidious albion.

author: JustSquareEnough
author_rank: Unknown
timestamp: June 10, 2021, 08:50:04 pm
content: great video, Dave. would watch the whole series!
EEVblog 1394 - Onkyo Receiver Repair - Part 1 - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: May 20, 2021, 01:37:19 pm
content: An interesting dive down the repair rabbit hole on an Onkyo TX-SR607 surround sound receiver amplifier with a failed vacuum fluorescent display.

author: Dr. Frank
author_rank: Super Contributor
timestamp: May 20, 2021, 04:35:19 pm
content: Yeah Dave, please continue this repair on a real good device please, haven't seen such more sophisticated videos from you for a long time already.Onkyo devices are quite good to repair, as their typical failures can be found on several HiFi forums.My 25 y/o Onkyo Stereo amplifier is still working , only needed a cleaning of the output relay, and a disassembly and cleaning of the servo mode switch.Found these repair hints also on the web.These Onkyos are always made like a brick, I really love to work on them.Frank

author: free_electron
author_rank: Super Contributor
timestamp: May 20, 2021, 04:49:19 pm
content: you had your meter set to DC when first trying to measure the filament AC voltage 16:18 ... (even though you had the wrong pins)Note: these onkyo machines can 'dim' their display through the remote control. are you sure the display is not set to 'off' ?I want to know what CAD software is used for the pcb layout. The routing is very distinct in many japanese machinery. Same for their schematics. that is a very distinctive look.Look at the display board. it has negative + signs etched in. the fonts are special , many traces end in little islands of copper to reduce the amount that has to be etched. The boards are full of wire straps. The cad software has to have special trickery to do that. It certainly is not altium/cadence/mentor... I am very curious to know what software this is and want to see a demo or trial of it.
EEVblog 1392 - No temp probe? No problem! - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: May 12, 2021, 02:04:59 pm
content: Think your multimeter doesn't have inbuilt temperature measurement? Think again!Dave shows you a trick to measure ambient temperature with your multimeter without a temperature probe.Followup video testing in the fridge:

author: Wiljan
author_rank: Regular Contributor
timestamp: May 14, 2021, 03:42:47 pm
content: I have a Keysight U1282A here, the display shows 18.4 deg for the meter internal.If I select the Temp mode for ext probe and short the test lead ... it shows 18.4 just as you explainedSo my question: Can an external probe show lower than the room temperature?I mean this is 0 ohm when leads are shorted so it will be hard to get a negative ohm

author: gamalot
author_rank: Super Contributor
timestamp: May 14, 2021, 03:46:52 pm
content: Quote from: Wiljan on May 14, 2021, 03:42:47 pmWhen using a thermocouple to measure temperature, it measures voltage instead of resistance.https://en.wikipedia.org/wiki/Thermocouple

author: David Hess
author_rank: Super Contributor
timestamp: May 14, 2021, 04:31:31 pm
content: My Tektronix multimeter has a dual display which shows the cold junction temperature as well as the thermocouple probe temperature.
Episode #168 How to set up an electronics lab --- My boys were surprised - Page 1
Forum section: electronics / general

author: Robert Smith Eco Warrior
author_rank: Regular Contributor
timestamp: April 19, 2021, 12:34:38 pm
content: Hi Dave / All,My boys and I watched episode 168 a few days ago. I just watched it again at 2x speed which is watchable but a bit like how a fast speaking auctioneer might produce a video. The 'T'rex arrr arrr arrr is especially funny at 2x speed.I have said to my boys (13 and 15) that we can make circuits up and they looked at me quite doubtfully.So we went through everything on your video.(Listed below)My boys were very surprised at what I have lurking in drawers and shelves.I am getting abuse from them about my stick soldering iron so that might have to be the next addition. I am on a tight budget so that might have to wait a while.Multimeters. Yes (I have a fluke 77 Mk2 and a few other cheapies and they each have the EXtech 330 the same as you mentioned)Oscilloscope ..... Hameg HM303-6 bought but need to collect it when Covid restrictions allow.Function generator ... Maybe (The guy selling the oscilloscope mentioned the possibility of a free one)Power supply ... Yes. Dual old school Farnell supply 0-30v 2A with current limitSoldering .... Yes.... But the crap Weller stick plug in jobby, so I got verbal abuse from my boys.Solder ... Yes 60/40 Multicore Rosin ( A bit thick though)Solder Sucker ... YesTweezers ... YesGoggles ... Yes (Same ones)Fan / Extractor ... YesInspection Lens ... YesCable adapters ... YesSidecutters ... YesPliers ... YesWire Strippers ... Yes (RS 'T rex' type)Spanners ... Yes (From tiny to about 65mmFiles ... YesAllen Keys ... YesScalpel ... YesSteel Rules ... YesVernier Calipers ... YesScrewdrivers ... YesScrewdriver various bits ... YesDave CAD ... Yes (also proper cad)Heatshrink ... YesTerminals ... YesTape .... YesWire ... YesBreadboards ... YesVeroboard ... YesComponents ... Yes (A good collection gathered over the years)Bin ... YesFire extinguishers ... Yes (Many)ESD wrist strap.... Hmm currently a bit of wireLeads ... Hmm .. a fewDremel ... NoSolvent cleaner ... NoTrim pot adjusters ... NoDemagnetiser ... NoNibbler ... NoHot Snot gun ... NoMicroscope ... No ( We have one but 100x - 400x biology type jobby)Solder wick... No. need someVoltage detection stick... NoFlux Pen ... No

author: Robert Smith Eco Warrior
author_rank: Regular Contributor
timestamp: May 10, 2021, 03:20:48 pm
content: Bosch hot glue gun bought todaySoldering station arrived todayCollecting a Hameg 303-6 oscilloscope tomorrowA few bits to order from RS.Getting close to the full Dave list
inline image test -- will delete later - Page 1
Forum section: electronics / general

author: ccktek
author_rank: Regular Contributor
timestamp: April 17, 2021, 10:02:26 pm
content: This is some text.This is more text.This is still more text.

author: mindcrime
author_rank: Unknown
timestamp: April 18, 2021, 11:25:24 pm
content: Beautiful!

author: T3sl4co1l
author_rank: Super Contributor
timestamp: April 19, 2021, 12:04:14 am
content: Quote from: ccktek on April 17, 2021, 10:02:26 pmYup, gotta embed the link, the attach thing is still brokeded.Those are some sharp photos, as screen shots go. I never seemed to have ambient lighting low enough, and camera exposure right, to get things to come out nice...Wave to the man in the reflection..Oh actually this one turned out real nice, not sure what all I did for it, huh:https://www.seventransistorlabs.com/Images/Snubber_Wave.jpgmaybe just better contrast / thresholding, can still see a bit of shadow in the background.A touch of spherical "warp" correction seems to help; YMMV what filter/transform this is available as. (I use an old copy of PSP7 that, is rather limited on transforms, but it helps, at least. Enough to correct for lens aberration, though not the curved CRT face.)I've got a GPIB setup now though, so it's not such a big deal getting perfect screenshots off the scope/spec. Well, the spec (8590A) is annoying because it resets config when addressed, and complains loudly on malformed commands... but in principle at least.https://www.seventransistorlabs.com/Images/Source_Inductance_Cancellation2.pngTim
Keysight dogging Dave?  - Page 1
Forum section: electronics / general

author: mindcrime
author_rank: Unknown
timestamp: March 31, 2021, 01:00:31 am
content: Apparently Keysight aren't terribly fond of Dave's review of their new Electro Turbo Encabulator:Quotehttps://youtu.be/fltOyddlnOE

author: MK14
author_rank: Super Contributor
timestamp: March 31, 2021, 02:43:43 am
content: That is really good and funny.I'm not 100% sure what it is, but I want one anyway.I wonder how it was organised and coordinated. That is not an easy job, I suspect. Especially with the somewhat personalized scripts.Nice choice/selection of channels.

author: Brumby
author_rank: Unknown
timestamp: March 31, 2021, 03:07:17 am
content: Daniel did an outstanding job ... I was fully engaged all through his presentation.Reviews covered various aspects - from commentary on the advances, to application (Bigclive) to the inevitable critic.....Bottom line:Made my day.

author: Bud
author_rank: Super Contributor
timestamp: March 31, 2021, 05:07:44 am
content: Did he used a teleprompt, it is not possible to memorize that much gibberish or improvise for that long that smooth

author: bdunham7
author_rank: Super Contributor
timestamp: March 31, 2021, 05:23:07 am
content: For those that haven't seen the previous turboencabulators...

author: Melt-O-Tronic
author_rank: Frequent Contributor
timestamp: March 31, 2021, 05:37:22 am
content: I thought it was some sort of April Fool's joke and almost bailed out until I saw Shahriar's explanation. Now it makes sense.

author: joseph nicholas
author_rank: Frequent Contributor
timestamp: March 31, 2021, 07:10:18 am
content: Have a very scokum April.

author: julian1
author_rank: Frequent Contributor
timestamp: April 01, 2021, 06:55:52 am
content: Holy hell, I love 'the noise path', and accompanying graphic animation!. Amazingly entertaining cast.
eevblog shadowbanned on twitter!? - Page 1
Forum section: electronics / general

author: nuclearcat
author_rank: Unknown
timestamp: March 29, 2021, 08:11:10 am
content: https://twitter.com/eevblog/status/1376418048257585153How ugly Twitter looks now, especially after their statement like this:https://www.reuters.com/article/us-russia-twitter-concern/twitter-says-deeply-concerned-after-russian-move-idUSKBN2B22GLI wonder if people and governments have a limit of patience for the lawlessness that these companies are doing.

author: Karel
author_rank: Super Contributor
timestamp: March 29, 2021, 09:43:45 am
content: I banned facebook, whatsapp, instagram, twitter, google and microsoft.In fact, I canceled all tech giants. I'll not be censored by them.If I want to share something with the world, I have my own website (not hosted by a tech giant).There's email (not provided by a tech giant) and there's Telegram, Signal, etc.I feel pity for people who can't live without social media, they should go in therapy.

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: March 29, 2021, 09:45:03 am
content: Fuck twitter

author: rsjsouza
author_rank: Super Contributor
timestamp: March 29, 2021, 09:55:28 am
content: I have an account that follows Dave but do not use it. Does Dave discuss political or cultural topics there? That would be the only reason for such move if the engages in "wrongspeak".Overall yeah, f*** Twitter and the corporate giants of the Internet. I got rid of most but unfortunately some I can't give up yet due to living abroad (Whatsapp, Facebook, Instagram).

author: nuclearcat
author_rank: Unknown
timestamp: March 29, 2021, 09:58:35 am
content: Quote from: rsjsouza on March 29, 2021, 09:55:28 amI think he is very careful in his statements, but he was repeatedly attacked on Twitter several times.Everyone knows very well that he approaches many issues in a scientific manner, can do public analysis and debunking, and this interferes with very nature of "hype riding trains".

author: Karel
author_rank: Super Contributor
timestamp: March 29, 2021, 10:14:05 am
content: Quote from: nuclearcat on March 29, 2021, 09:58:35 amSo true, unfortunately.
ODYSEE EXCLUSIVE: Black Magic ATEM Mini Pro ISO TEARDOWN - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: February 26, 2021, 01:33:11 am
content: An ODYSEE EXCLUSIVE: Black Magic ATEM Mini Pro ISO production video switcher TEARDOWNhttps://odysee.com/@eevblog:7/2021-02-24-Atem-Mini-Pro-Iso-Teardown:f

author: CChin254
author_rank: Regular Contributor
timestamp: March 25, 2021, 05:52:34 am
content: IC Identification:

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: March 25, 2021, 06:10:22 am
content: Whilst I wanna support the odysee exclusive idea, I am noticing a problem where I get into a video a few minutes and the stream drops out and abruptly starts playing the next video. Really annoying.When I try and go back and force the stream to continue, same thing. Annoying.Can you please put a fall-back link to vimeo or something?Or better yet, tell LBRY Ed said "Hey Odesee! Fix yo shit!"

author: EEVblog
author_rank: Unknown
timestamp: March 25, 2021, 09:59:39 am
content: Quote from: Ed.Kloonk on March 25, 2021, 06:10:22 amI think I had that issue the other day, but it cleared itself.
BlackMagic ATEM Mini Pro Audio/Video Delay Measurement - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: March 24, 2021, 09:41:20 am
content: Dave measures the delay bewteen the Line In audio and the HDMI captured video on the Blackmagic ATEM Mini Pro ISO.Also the video frame delay of the Key function.
Help me find a video - Page 1
Forum section: electronics / general

author: Lost resistor
author_rank: Contributor
timestamp: March 17, 2021, 09:47:24 pm
content: Hope this isn't a double topic and that i could be useful for other people.In the specific video im looking fore, Dave explains a "problem" some people had with oscilloscope, where it won't go lower than 10 mVpd (while it should to say 1 mVpd), he than goes on explaining that it's because you need to manually switch oscilloscope from factory set 10x probe, to 1x. Then he goes on explaining how some oscilloscope do these automatically. That's all i remember.I have tried and tried looking for it, but just cant seem to find it. Its probably that case of where something is in front of your nose, and you just cant see it. Or more likely i don't know how to search for it.Anyway, hope someone can help.

author: plurn
author_rank: Regular Contributor
timestamp: March 20, 2021, 08:40:50 am
content: might be this one - covers all that information that you mention:EEVblog #778​ - Oscilloscope Vertical Confusion
EEVblog 1380 - BBQ IBM Chips - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: March 11, 2021, 10:24:02 pm
content: It's an aussie barbie with fried IBM chips.Part 1:Part 2:

author: Fungus
author_rank: Super Contributor
timestamp: March 15, 2021, 11:08:45 am
content: Don't they have soapy water in Australia?Give it a bath first to avoid turning the oil into sticky brown gunk.
Enphase Solar Monitoring Modification - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: May 28, 2021, 12:52:06 pm
content: Modifying the Enphase Envoy solar monitor system to cancel out the second 3kW system.

author: IanJ
author_rank: Unknown
timestamp: May 30, 2021, 04:31:47 pm
content: Dave's video prompted me to fix a couple of bugs in the Arduino code used to gather my import/export/solar inverter data..............narrowed it down to the following snippet......can spot the two typos?....DUH!Code:// Determine Import / Export Power / Consumption// Importingif ( DataMeterPwr > 0) {// If > 0 then must be importing from gridDataImportPwr = DataMeterPwr;DataExportPwr = 0;// Force to zeroDataConsumptionPwr = DataGenPwr + DataImportPwr;// Actual consumption when importing is generation power + import power}// Exportingif ( DataMeterPwr < 0) {// If < 0 then must be exporting to gridDataExportPwr = DataMeterPwr * -1;// make positive - could use ABS() function I supposeDataImportPwr = 0;// Force to zeroDataConsumptionPwr = DataGenPwr = DataExportPwr;// Actual consumption when exporting is generation power - export power}// Neither Importing or Exportingif ( DataMeterPwr = 0) {// If neither exporting or importing then either house consuming nothing, or the solar gen power is exactly matching what is being consumed (highly doubtful)DataImportPwr = 0;// Force to zeroDataExportPwr = 0;// Force to zeroif (DataGenPwr == 0) {DataConsumptionPwr = 0;// Solar gen is zero also so consumption must be zero} else {DataConsumptionPwr = DataGenPwr;// Consumption must be exactly matching generation}}

author: Brumby
author_rank: Unknown
timestamp: June 08, 2021, 04:50:12 am
content: Quote from: IanJ on May 30, 2021, 04:31:47 pmIs one somewhere on this line?I'd like to say I never made such slips - but I'd be lying.
Calculating the Energy in a Capacitor - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: June 01, 2021, 04:45:23 am
content: Only Dave can turn a dumpster whiteboard find test video into a tutorial on deriving the equation for the energy in a capacitor.And shot in 4K because Dave didn't check the camera beforehand.

author: boffin
author_rank: Unknown
timestamp: June 01, 2021, 05:20:14 am
content: I actually like the layout of the vertical whiteboard. Maybe just crop it in a little bit tighter like this (same aspect ratio), and slightly raise the whiteboard

author: sandalcandal
author_rank: Unknown
timestamp: June 01, 2021, 07:00:46 am
content: Quote from: boffin on June 01, 2021, 05:20:14 amOne of the benefits of shooting in 4K, you can reframe in post without losing too much clarity on the 1080p upload.

author: EEVblog
author_rank: Unknown
timestamp: June 02, 2021, 03:25:58 am
content: Quote from: boffin on June 01, 2021, 05:20:14 amYes, I wouldn't frame it like that in a real video, too wasteful. That basically turns it into a square whiteboard.
EEVblog Odysee Exclusive: Black Magic ATEM Mini Pro ISO Teardown - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: February 25, 2021, 10:59:33 am
content: More Odysee goodness:https://odysee.com/@eevblog:7/2021-02-24-Atem-Mini-Pro-Iso-Teardown:f

author: CChin254
author_rank: Regular Contributor
timestamp: February 25, 2021, 09:56:55 pm
content: If only there were high resolution pictures of its PCB. I would have liked to look at it more deeply.

author: Algoma
author_rank: Frequent Contributor
timestamp: February 26, 2021, 01:35:55 am
content: Installed four of those into University classrooms as video conference control systems, Handles Front, Back, PC and Document Camera inputs.
Practical Application of Quantum Computing - Contact Tracing - Page 1
Forum section: electronics / general

author: nihal.mehta
author_rank: Newbie
timestamp: July 10, 2020, 04:50:43 pm
content: For a practical application with quantum computing, check out my article on how quantum computing can be used for safe and secure contact tracing athttps://hackernoon.com/how-quantum-computing-can-make-contact-tracing-safe-from-prying-eyes-qvq3ynb

author: RoGeorge
author_rank: Super Contributor
timestamp: July 10, 2020, 05:18:01 pm
content: Sounds like a scam.

author: ejeffrey
author_rank: Super Contributor
timestamp: March 11, 2021, 03:02:05 am
content: So there are lots of problems with this including but solving the social problem of people not trusting systems and the fact that as presented at face value wouldn't provide any useful security if it worked. But it doesn't work because the contact tracing protocol is based on a common but fundamental misunderstanding of entanglement. Measuring one member of an entangled pair of qubits will always result in 50-50 regardless of if or how the partner has been measured. Only by reconnecting and comparing the results to see correlation can you see any effect of entanglement.More generally quantum mechanics (including entanglement) doesn't provide any mechanism for remote communication of any sort. If anything you did locally affected the results of a remote collaborator even allowing for pre shared entanglement that could be used for faster than light communication which is impossible within the framework of standard quantum's mechanics and therefore quantum computers.
Dumpster Plugpack Graveyard! - Page 1
Forum section: electronics / general

author: MrMobodies
author_rank: Super Contributor
timestamp: March 03, 2021, 08:33:33 pm
content: Just noticed that some of the plugpacks in one of the green bins 00:48 in the video have got labels on them but can't make out much of the text from the video:

author: thm_w
author_rank: Super Contributor
timestamp: March 03, 2021, 09:50:32 pm
content: "Warningenergy(?) saving(?) devicedo not remove"Another one had written "no good"I haven't watched follow up yet, probably explained in there:

author: MrMobodies
author_rank: Super Contributor
timestamp: March 03, 2021, 11:39:57 pm
content: I've already seen that video but I didn't see any of those yellow labels on the ones Dave had.In the dumpster the white plugs and sockets seem to have the matching cables.

author: Bud
author_rank: Super Contributor
timestamp: March 05, 2021, 04:34:24 am
content: Quote from: thm_w on March 03, 2021, 09:50:32 pmWas it me or the quality of this video was really poor in terms of overcompression ? Guess Dave was using a new capture device.

author: WackyGerman
author_rank: Regular Contributor
timestamp: March 05, 2021, 01:41:59 pm
content: They chopped the cables because you get more money for cables without plugs than with ones at the recycling station

author: Fungus
author_rank: Super Contributor
timestamp: March 05, 2021, 07:18:43 pm
content: Quote from: WackyGerman on March 05, 2021, 01:41:59 pmIf they opened up all those boxes to take something out then they left an awful lot of cable behind.

author: thm_w
author_rank: Super Contributor
timestamp: March 05, 2021, 08:34:23 pm
content: Quote from: MrMobodies on March 03, 2021, 11:39:57 pmLikely its just some customers label they put on so staff don't unplug these power monitor/saving switches:https://www.plugwise.com/documents/plugwise/product_documents/EN-sting-ts.pdf(from jon on youtube)

author: bfritz
author_rank: Regular Contributor
timestamp: March 06, 2021, 04:45:42 am
content: Dave, the word you were looking for...The crimped on "thingy" that allows the wire to be easily inserted into a pcb and soldered: a ferrule.
Manufacturing & Assembly: Bad Gateway. - Page 1
Forum section: electronics / general

author: phil from seattle
author_rank: Super Contributor
timestamp: February 15, 2021, 04:15:18 pm
content: Did not see an obvious place to post this, please forgive me if there is a more appropriate location to post it. I'm getting a bad gateway error on the Manufacturing and Assembly sub forum. No where else am I seeing it.

author: gooligumelec
author_rank: Contributor
timestamp: February 16, 2021, 05:49:36 am
content: ditto ^ 2It's possible to access posts under Manufacturing via search. But not the top level.Also couldn't find any place to post about site issues like this.

author: nuclearcat
author_rank: Unknown
timestamp: February 16, 2021, 05:58:02 am
content: https://www.eevblog.com/forum/chat/website-error-reports/400/

author: gooligumelec
author_rank: Contributor
timestamp: February 16, 2021, 06:05:24 am
content: Thanks! I'll know where to post next time.Manufacturing and Assembly seems to be fixed now.
502 Bad Gateway error for RF, Microwave, Ham Radio - Page 1
Forum section: electronics / general

author: radiolistener
author_rank: Super Contributor
timestamp: February 15, 2021, 04:29:03 pm
content: Cannot open "RF, Microwave, Ham Radio" section of the forum, it shows error:502 Bad GatewayCould you please fix that?

author: radiolistener
author_rank: Super Contributor
timestamp: February 15, 2021, 04:32:57 pm
content: Now the same error happens with a Beginners section.

author: MikeK
author_rank: Super Contributor
timestamp: February 15, 2021, 09:41:03 pm
content: Same here. Started last night, I think. "Beginners" was fine last night, but not today.But I can go directly to threads within those sections, just not the section's list of threads.

author: MikeK
author_rank: Super Contributor
timestamp: February 15, 2021, 10:56:11 pm
content: "Beginners" is working again. "RF, Microwave, Ham Radio" still bad.
EEVblog #1370 - Kindle Paperwhite REPAIR - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: January 31, 2021, 11:13:15 pm
content: Dave repairs his pesky Kindle Paperwhite with touch screen and charging issues.

author: Brumby
author_rank: Unknown
timestamp: February 02, 2021, 01:28:20 am
content: Rule #1 - Check voltages.Covers the battery, I think.

author: Tek_TDS220
author_rank: Regular Contributor
timestamp: February 02, 2021, 02:04:44 am
content: Serial data lines have become common on batteries for laptops and other devices. It's a good way to monitor battery health, temperatures, failure of individual cells, etc. It would be nice if there were a standard software protocol. This would eliminate any rationale device manufacturers have for not allowing any batteries other than their own.

author: engineer_in_shorts
author_rank: Regular Contributor
timestamp: February 09, 2021, 03:07:43 pm
content: Didn't you take apart the kindle years ago............ yup just checked:

author: Renate
author_rank: Super Contributor
timestamp: February 12, 2021, 12:48:53 pm
content: I'm more of a Nook fan so it was interesting to see the Kindle teardown.Did I see places for a standard SD card and a micro SD card?Is there any access for a console UART?It would have probably told you a lot of what it was doing when it was being balky.

author: ChristianW
author_rank: Newbie
timestamp: February 15, 2021, 08:02:21 am
content: I guess the I2C lines could be an SM Bus commonly used in smart batteries for the fuel gauge.Protocols often follow the Smart Battery Specification - at least the first few registers should be the same...http://sbs-forum.org/specs/sbc110.pdf.If it does have a fuel gauge, it could have "learnt" the charge and health status of the old battery, and so it is not strange that it reports a low stored charge until it has gone through at least one complete charge / discharge cycle.

author: EEVblog
author_rank: Unknown
timestamp: February 15, 2021, 08:14:46 am
content: Quote from: engineer_in_shorts on February 09, 2021, 03:07:43 pmLOL, so I did.

author: nctnico
author_rank: Super Contributor
timestamp: February 15, 2021, 01:35:15 pm
content: Quote from: Tek_TDS220 on February 02, 2021, 02:04:44 amActually there is:https://en.wikipedia.org/wiki/Smart_Battery_System
In search of Toroid iso transformer teardown - Page 1
Forum section: electronics / general

author: jeffjmr
author_rank: Regular Contributor
timestamp: February 11, 2021, 03:25:25 am
content: I have searched and searched for this video after being unable to watch the whole thing and stupidly not noting the episode number. I looked at the titles of every single episode to date and could not find a reference to this episode. The one iso transformer teardown found was for different unit.I noticed I am not the only one searching for it and the responses are not the correct episode.This was a teardown of a Toroid brand medical grade isolation transformer.Help!!!Jeff
EEVblog #1360 - REPAIR - Aircon Control Panel - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: December 29, 2020, 01:55:16 pm
content: Dave's lab aircon control panel has been dodgy for years, time to finally fix it!A simple fault with rather interesting and complicated set of a symptoms based on a (poor?) design decision.

author: CChin254
author_rank: Regular Contributor
timestamp: December 31, 2020, 08:52:15 pm
content: IC Identification if y'all are interested in one image:

author: tkamiya
author_rank: Super Contributor
timestamp: January 03, 2021, 02:38:42 pm
content: COOL/ELEC is for traditional air conditioner / resistive heating element setup. Heatpump is more recent heating where flow of freon is reversed.

author: jnissen
author_rank: Regular Contributor
timestamp: January 04, 2021, 07:51:07 pm
content: The reason it went to run after you cycled it quickly is to allow the compressor in the AC to equalize pressure so it isn't trying to start under the high head pressure. Standard to have delays if it short cycle ran for only a few seconds or minute or two. Protects the compressor from over current condition where you hear the thermal snap switch kick in and out!

author: Kuber
author_rank: Newbie
timestamp: January 14, 2021, 01:33:30 pm
content: Just wondering if you checked the rest of the switches while you had it apart?

author: agtrbt
author_rank: Contributor
timestamp: February 08, 2021, 05:32:22 am
content: Axial capacitors and inductors have gone extinct
EEVblog Odysee Exclusive: Dymo just want to watch the world burn - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: February 20, 2021, 03:16:17 am
content: More of these please Dave!https://odysee.com/@eevblog:7/Dymo-just-want-to-watch-the-world-burn:f

author: chickenHeadKnob
author_rank: Super Contributor
timestamp: February 20, 2021, 07:48:49 am
content: Me not get title. Is it because peeps are tossing usable stuff and Greta is angries?

author: sleemanj
author_rank: Super Contributor
timestamp: February 20, 2021, 09:28:26 am
content: Quote from: chickenHeadKnob on February 20, 2021, 07:48:49 amIt's because they used center negative.They are, to borrow from Mr Adams, a bunch of mindless jerks who will be first against the wall when the revolution comes.

author: floobydust
author_rank: Super Contributor
timestamp: February 21, 2021, 06:25:34 am
content: All Brother P-touch labellers are just as evil, 9V 2A center pin -ve oddball $24 AC adapter.I hacked the cord on one 9V wall wart I have, dedicated it only to the labeller. Nothing else in the world uses that.

author: nctnico
author_rank: Super Contributor
timestamp: February 21, 2021, 12:14:59 pm
content: Quote from: floobydust on February 21, 2021, 06:25:34 amDepends on how far you look back. Center negative / positive used to be mixed much more back in the old days. Nowadays the world seems to move to center positive but for products (like label printers) which have been on the marked for decades it is hard to change. In case they change the polarity, the adapters can not be interchanged between older and newer models. And think about the cost of logistics involved with phasing out 'center negative' adapters with 'center positive' ones while this doesn't give any benefit to the manufacturer or customer.

author: floobydust
author_rank: Super Contributor
timestamp: February 22, 2021, 05:04:09 am
content: It's the most pathetic way to have a monopoly on AC adapters for your products and gouge your customers accordingly.Looking at the Brother prices for label tape CAD >$20 for a roll, a new labeller is $50 and the AC adapter $31

author: Berni
author_rank: Super Contributor
timestamp: February 22, 2021, 09:21:13 am
content: Yeah a lot of these label makers use the business model similar to office printers where they sell you the printer on the cheep but then make up the profit on consumables and accessories.The prices for label tape cartridges are insane. But luckily you can buy fake compatible tape cartridges from china at only like 2 to 6 USD per cartridge(depends on type, size and how common it is).

author: Fungus
author_rank: Super Contributor
timestamp: February 22, 2021, 05:02:35 pm
content: Quote from: nctnico on February 21, 2021, 12:14:59 pmIf only there was a way to use a different size plug...(Or switch to USB C)Maybe it's a way of getting people to blow up their gear by daring to use a non-official adapter. "Sorry, that's not covered by warranty, you'll have to buy a new one".
wind turbine roadways? - Page 1
Forum section: electronics / general

author: johnr_1176
author_rank: Newbie
timestamp: January 31, 2021, 10:28:46 am
content: Has any one seen this. Turbines capturing energy from passing vehicles. May have some good thing going though like temp and gas monitoring?https://devecitech.com/

author: Kleinstein
author_rank: Super Contributor
timestamp: January 31, 2021, 01:08:00 pm
content: We had this before under the dodgy .... topic. AFAIR Dave even did a video on this.There could a very few cases where is may make sense, e.g. to power something like remote wireless sensors that have no other supply. However this would be more very low power energy harvesting, not for low price of energy.
EEVblog #1352 - Aircraft Transponder TEARDOWN! - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: December 04, 2020, 09:55:45 pm
content: Teardown of a Made in Australia MicroAir T2000 aircraft transponder.http://microair.com.au/products/26/T2000SFL-Transponder-Rev8-

author: Clear as mud
author_rank: Regular Contributor
timestamp: December 22, 2020, 01:07:36 pm
content: At around the 11 minute mark, you hold the board up to the camera and say "this little puppy is not going to reveal what it is."This is just a guess: power-up sequence timer? I looked up a couple of those chips. CD4514B is a programmable counter timer, with clock set by external RC. And MC14093B is a quad 2-input Schmitt-trigger NAND.

author: HyperSpectral
author_rank: Newbie
timestamp: January 10, 2021, 03:43:51 pm
content: The FCC website has schematics, BOM, user manual, filter alignment procedures, theory of operation and more. The "Ohm" jumpers are 1 turn inductors for example and the trimmer with the rigid coax tunes the base of the transistor. There is way more insight than just this. The filter tuning procedure includes design approach and specifications. The documents are for a previous revision, but it all seems to be the same basic design.Just go to the FCC ID search and enter PS3 for the Grantee Code and T2000 for the Product Code.Enjoy!
EEVblog #1359 - My SUPER PORTABLE Vlogging Kit! - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: December 28, 2020, 01:03:18 pm
content: Dave shows you his new compact portable video blogging kit that provides a complete vlogging solution in a tiny grab'n'go case!With 4 different audio solutions, lighting, power & charging solution, and a versatile handle and frame system, along with a tripod in an incredibly compact case.Bill of Materials:Sony ZV1 camera:https://amzn.to/3ptEjbGPelican 1150 Case:https://amzn.to/3rt3zAVSmallRig cage:https://amzn.to/37U8SkMSmallRig handle:https://amzn.to/3aLGL9jAputure AL-M9 Amaran video light:https://amzn.to/3hojtHPRode VideoMicro Tiny Shotgun Microphone:https://amzn.to/3nTqovhRode Lapel Microphone:https://amzn.to/37T8pQcRode Wireless Go Microphone:https://amzn.to/2WQCwkUAnker PowerCore Slim 10,000mAh battery bank:https://amzn.to/2KENrLYJoby GorillaPod 325 Tripop:https://amzn.to/3nTrBTlNitecore USN2 Charger:https://www.amazon.com.au/NITECORE-USN2-Battery-Charger-Youth-Unisex/dp/B07DVW86MG/Sony ZV1 batteries:https://amzn.to/3ptFaco

author: XMAN23
author_rank: Newbie
timestamp: December 31, 2020, 03:42:46 pm
content: Dave,How did you layout and cut the foam?Tom

author: EEVblog
author_rank: Unknown
timestamp: January 03, 2021, 01:27:09 pm
content: Quote from: XMAN23 on December 31, 2020, 03:42:46 pmIt's pick'n'pluck foam, no need for cutting.For layout I just placed bit on top in a suitable arrangement and then tore out the pieces.
EEVblog #1361 - Dodgy Tactile Switch TEARDOWN - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: December 30, 2020, 10:17:14 pm
content: By popular demand, Dave tears down the dodgy tactile switch from his aircon, and compared with a couple of others.

author: bitter_mike
author_rank: Contributor
timestamp: December 31, 2020, 03:54:44 am
content: Some might describe me as a plating expert. Those dark patches on either side of the snap dome looked like they lined up with the two contacts on either side of the post in the center. I believe those contacts and their respective legs leading out of the body are a single piece and, speculating further, I believe those legs are tin-plated which would mean the two contacts on the inside are also. The black stuff is probably tin oxide as a result of fretting corrosion (its the result of repeated, low amplitude motion between the snap dome and the contacts). I don't think I would say it's bad plating, its just a very cheap way of doing it, both because tin is relatively cheap and because it enables the leg/contact piece to be stamped and plated as a single piece.Of course I'd have to throw it under the XRF to make sure but the shipping costs....

author: jonovid
author_rank: Super Contributor
timestamp: December 31, 2020, 05:56:21 am
content: use more power microscope, looks like arcing spots

author: floobydust
author_rank: Super Contributor
timestamp: December 31, 2020, 07:34:15 pm
content: Of course these pushbutton switches cannot take a pcb wash, you have to use no clean solder. But that mistake I have seen noobs make.I'm suspicious the switch didn't get a drop of water inside, as the disc is oxidized black above the contacts only, so electrolysis occurring at those two gaps.OmronI find the best, I have zero hassles with them but they are expensive. Gold is optional.E-switchI did not like, just too cheap, they melt easy and plastic cover.
Just opened a present.... - Page 1
Forum section: electronics / general

author: Fungus
author_rank: Super Contributor
timestamp: December 25, 2020, 12:51:17 pm
content: I just opened a present and got this:

author: TERRA Operative
author_rank: Super Contributor
timestamp: December 26, 2020, 10:03:53 am
content: So don't leave us hanging! What brand did they use?

author: Bud
author_rank: Super Contributor
timestamp: December 26, 2020, 05:26:51 pm
content: The brand name is "100% Japanese"

author: exe
author_rank: Unknown
timestamp: December 26, 2020, 06:56:37 pm
content: Quote from: TERRA Operative on December 26, 2020, 10:03:53 am"CapXon"

author: SeanB
author_rank: Super Contributor
timestamp: December 26, 2020, 09:31:24 pm
content: Japicon, the knock off version of Jamicon, made by the workers using the finest salvaged components they can sweep off the floor, and lovingly hand painted value wise, as after all they sort by can size.

author: richnormand
author_rank: Unknown
timestamp: December 26, 2020, 10:00:29 pm
content: They are not the only one using that line and charging a premium.Here is the box from my Corsair PSU.And, no, I did not open it to check. I'll find out when it fails.Since it is being used 24/7 at full capacity on my "Folding @ Home" dedicated machine, that might be sooner than later since it just replaced an Antec PSU.

author: langwadt
author_rank: Super Contributor
timestamp: December 26, 2020, 10:10:11 pm
content: Quote from: SeanB on December 26, 2020, 09:31:24 pmswept off the floor is the premium brand, regular is straight from the trash

author: rsjsouza
author_rank: Super Contributor
timestamp: December 26, 2020, 10:54:10 pm
content: It is interesting but not new. Circa 2007~08 some motherboard brands advertised this very same thing. I have three or four Gigabyte motherboards from that era that have the suffix "UD" for ultra durable. Solid japanese capacitors.https://www.gigabyte.com/microsite/98/html/technology-guide-ultra-durable-1.htm

author: Fungus
author_rank: Super Contributor
timestamp: December 27, 2020, 03:22:50 pm
content: Quote from: TERRA Operative on December 26, 2020, 10:03:53 amI can't see.I'm building a PC for somebody else and it's all "Warranty void if removed" stickers.Does it matter though? They're Japanese!(OK, it wasn't really a "present" but it was Christmas and there was a huge box of new PC parts just sitting in the corner, so...)

author: thm_w
author_rank: Super Contributor
timestamp: December 29, 2020, 08:53:46 pm
content: Toms hardware reviews are detailed to the point that they list out components now:https://www.tomshardware.com/reviews/thermaltake-toughpower-pf1-650w-power-supply-reviewQuotehttps://www.tomshardware.com/reviews/corsair-rm750x-v2-psu,5585-3.htmlQuote
EEVBlog: Message system is very limited! Could it be improved? - Page 1
Forum section: electronics / general

author: Bicurico
author_rank: Super Contributor
timestamp: January 18, 2021, 09:02:27 am
content: Hello,I guess I am not the only one who collected precious information through private messages in the EEVBlog forum.However, the messaging system is so poor in terms of usability, that it is really a pain to use.I wonder if it could be upgraded to standards of other forums.I would specifically like to:- Be able to download all messages in one go (most important feature - I have tons of accumulated messages! Please allow to download them all as a text file)- Be able to use attachments (at the very least pictures and small ZIP files - up to 100KB would be ok)- Be able to see sent messages on the mobile phone (menu is really hard to select)- Be able to see messages as conversations (sent/received with the same subject)Thanks,Vitor
EEVblog #1354 - Compaq Portable Repair - Part 1 - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: December 11, 2020, 09:02:42 pm
content: Dave breaths life into the old Compaq Portable from 1984.Previous video:

author: Clear as mud
author_rank: Regular Contributor
timestamp: December 24, 2020, 01:42:35 pm
content: Previous forum:https://www.eevblog.com/forum/blog/eevblog-1348-worlds-first-ibm-compatible-pc-the-compaq-portable/When that previous video came out, I was reminded of a similar video I saw where someone fixed an old Commodore computer. He had a similar problem, with the reset being held active, but I'm pretty sure he found a different root cause. Bad chip or bad socket, IIRC. But I haven't been able to find that video again.
EEVblog #1357 - Dumpster Diving Santa PC - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: December 22, 2020, 04:28:01 am
content: Dumpster Santa delivered a nice Coolermaster Mini-ITX with Gigabyte GS-H97N motherboard and an Intel Core i5 inside.

author: Razor512
author_rank: Regular Contributor
timestamp: December 22, 2020, 05:42:25 am
content: Since it already has 2 Ethernet ports, you could use that PC as a pfSense router.The CPU should be able to handle the throughput of your internet connection. It also has good OpenVPN functionality.https://www.pfsense.org/

author: JustMeHere
author_rank: Frequent Contributor
timestamp: December 22, 2020, 06:11:58 am
content: I'm fairly sure you have the PSU in upside down. The fan should draw air from the CPU area and push it out of the back.See the image on here:https://www.extremetech.com/computing/128313-extremetechs-guide-to-air-cooling-your-pcThe old ATX case design requirements I've seen show this too. This is back when the PSU fan was the only case exhaust fan.Found in several EVGA power supply manuals:NOTE: It is recommended to install the power supply with the fanfacing down. However, if your case places the power supply at the bottom ofthe case and there are no ventilation holes available, it may be best to installthe power supply with the fan facing up for greater efficiency and reliability.

author: JustMeHere
author_rank: Frequent Contributor
timestamp: December 22, 2020, 06:51:36 am
content: Here's an old build out I did. The fan on the PSU is there and is part of the ATX specification. The extra fan is not part of the specification. It can be removed and the case will still be an "ATX case". The CPU is sitting next to the PSU fan for a reason. It would be the only way a passive heatsink would get sufficient airflow. They could have moved the CPU further away from the PSU, but they put it there for a reason.This machine ran overclocked at 133%. This arrangement kept the CPU cool enough. Well under 100 C.
EEVBlog2 IONIQ EV Fast Charging - Page 1
Forum section: electronics / general

author: Dr Bob
author_rank: Contributor
timestamp: December 12, 2020, 01:37:09 am
content: Dave is getting to see how easy it is to own an EV. Some people think there needs to be millions of fast chargers all over the planet and that nobody but Tesla has them when that's not the case. In most areas, the power company has off-peak tariffs for EV owners to encourage charging overnight when demand is low. Doing this means that the grid isn't going to melt and it's fantastic for the electric company since they are selling more energy at a time when they've historically had very high capacity available. In some parts of the world the power company has had to pay companies to use power at night to maintain enough load on the system since it doesn't make sense to turn off big thermal plants and let them cool down. The same can apply to hydro as cutting off all flow downstream of a dam would cause big tidal swings on rivers.Dave also will start seeing the importance of his ABC's (Always Be Charging). If NRMA is offering free charging, take it. It won't last forever. If the car can even be trickle charged while it's parked, that's not a bad thing and some shopping centers offer free or inexpensive charging as a way to bring in customers. Somebody would have to be parked all day to use up enough power to make much of a difference. People coming in for an hour to shop are getting what? $.70 of electricity from L2 charging? Hopefully the profit from their shopping is much more than that.It has to be kept in mind that refining crude oil into petrol is energy intensive. Argonne National Labs did a study and found it takes 7.46kWh per US gallon to refine light sweet crude. Lower grades take more energy. The easy way to look at that is to convert that power to around 26miles of range in an EV without counting the energy in the petrol/diesel. If refineries aren't refining as much transportation fuel, there is more power left on the grid for EV charging.Keep the updates coming, Dave. As an engineer, your observations will be based more on reality than some others. I'm interested to see how much of charging can be attributed to the solar panels on the house.