hybridfree/eevblog-posts huggingface dataset:
Low Impedance and Low Pass Filter functions on a multimeter - Page 1
Forum section: electronics / general

author: giacomo
author_rank: Regular Contributor
timestamp: June 04, 2017, 10:58:58 pm
content: Hi, i have found these two function on a new 60€ multimeter, the Extech EX350 and i am wondering... How much can they be usefull ? Are they usefull on a cheap multimeter like this ? (it seems the only one), but most important, when i should use them ?Maybe it is simple, i do not know, but it seemed a nice idea for a short tutorial

author: David Hess
author_rank: Super Contributor
timestamp: June 05, 2017, 11:46:56 am
content: This is the kind of meter than an electrician would use.The low pass mode is for AC voltage measurements on pulse modulated waveforms like from VFDs (variable frequency drives) and inverters.Low impedance AC mode is used to make accurate voltage measurements where coupling into an open circuit would otherwise give a false reading with a high impedance meter.
EME - Earth Moon Earth - Page 1
Forum section: electronics / general

author: TheSteve
author_rank: Unknown
timestamp: May 21, 2017, 12:14:57 am
content: Dave,I know you're not into ham radio but you do like space(who doesn't...). If there is a well enough equipped amateur operator/station/club near you that can do voice based earth moon earth contacts it might be worth looking in to. It is rather neat to hear your own voice echo off the moon(~2.5 second delay). Assuming it doesn't get too technical you could talk about the free space path loss and the total system gain needed to overcome it etc.Hams have also bounced signals off of Mars and Venus - due to the loss I believe both of those feats are data only.There are also lots of fun activities such as amateur radio designed satellites, contacts with ISS and there are hidden transmitter(fox) hunts.
need more EEVblog revenue Try developing more electronic pcb Kits - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: May 20, 2017, 08:33:25 am
content: -also posted onthe amp hourpage.just a word from an old weekend electronics hobbyist.are you seeking new original design in today’s cheap Chinese electronic kits? many Chinese copy cats are good at copying stuff but some what poor at original design ideas. so my big idea is that you as electronics engineers can make original design pcb electronic kits. for DIY kits use part thru-hole zones with a surface mount core on the same project circuit board. andkeep one step ahead of the copy cats.I did post this three-part pcb kit idea to an Australian electronics publication, but have seen little or no response to the idea so far. the idea is to have three-part pcb kits. part software, part surface mount, & part thru-hole on the same pcb kit. the software part can be like arduino or even an arduino clone, the surface mount core can be an original form factor. say a smartwatch form factor. a 30mm x 30mm o-led screen on a mico pcb. the thru-hole zones can be DIY add on’s or a video DVR sports camera kit or a lab power supply kit. or even a an oscilloscope kit that is better then the Chinese one’s. three-part pcb kits are part software, part original form factor, and part DIY thru-hole pcb customization. say you can add knobs to your oscilloscope kit if you like. in place of buttons. change the look of the graphical user interface GUI. just like with arduino software. so lets say you with a video dvr sports camera electronic kit you can add any lens to the image sensor. change the form factor so it will fit into a tube like a model rocket, or tuck it in your shoe like 007.IMO where the money to be made is in the original form factor & the original software mod. your kit is better then the others. lets you add more customization. So this development idea is sadly not for me, as I am not a electronics engineer, just a weekend electronics hobbyist.however I do buy and build many electronic kits, so give it a go if your better than me.this is my electronic kit wish list.PSdo Reply

author: Simon
author_rank: Unknown
timestamp: May 20, 2017, 08:38:03 am
content: I think a real course supported by kits in microcontrollers particularly ARM would go down well, it's such a daunting thing to start with and some good advice that skips nothing would go down a treat. Also analogue designs might help promote this area of electronics that is being forgotten but that is very relevant.
Fundamentals Friday - Safety - Page 1
Forum section: electronics / general

author: Z80user
author_rank: Contributor
timestamp: May 17, 2017, 02:52:52 pm
content: I try to think how dangerous can be electronic devices, I always hear about "main earth" on electronic devices is a good idea, the video "EEVblog #279 - How NOT To Blow Up Your Oscilloscope!" and other things like when you change your fluorescent to LEDs on some videosAlso I know High voltages on CRT monitors are or can be dangerous, I read you was worryed about touch old fashion CRT monitors, but I want to repair some of this CRT TVs, will be nice to know a safety way to test if are some voltage on it to check if the flyback workI upgrade some heaters to made the fan run when reach some temperature and the heater element turn off, normal don't do thatI have one solder iron (80W) with the ability to can turn on one led when I soldering a USB conector and only touch one point of the circuit, well, this have a extra build in batery cell 3.7VI think one video or more than one... one to protect devices and another one to protect people can be useful... always worryed about touch on the wrong placewell on my home I have a extra problem, is a very old home from 1942-1944 more or less and the electric only have a couple of wires and no main earthsometimes when I touch some things (with a metalic case) I feel something as tickle on my fingers and the surface feel roughBy now the worst electrocution was with the phone line, that made two of my fingers was damaged for a short time, now I still having 10 perfect fingers but that was insaneand some more things with the main power lines like touch both wires at the same time with a nude hand... :-//well I still alive after 4 electrocutions, one with the phone line and theMagnetothermic only work one timeto be more safety now I'm trying to change all of the electricity of the home to add main earth to all of the building but I will need a lot of time, is a huge home with a shop on it with the same ploblemthe wires of my home look like the one on the attachments
Suggestions for new videos - Page 1
Forum section: electronics / general

author: oldway
author_rank: Super Contributor
timestamp: May 13, 2017, 04:31:05 pm
content: After so many wonderful videos, Dave must perhaps sometimes lack of inspiration regarding the subject of new videos.I suggest you help with your suggestions.I begin by suggesting videos about audio devices of all kinds (for exemple, amplifiers, receivers, ...) old and recent, including tubes gears.

author: Brumby
author_rank: Unknown
timestamp: May 14, 2017, 05:51:27 am
content: Offering suggestions is not a problem in my book and does not deserve such a comment.Your cynicism is your problem.

author: oldway
author_rank: Super Contributor
timestamp: May 14, 2017, 07:20:43 am
content: Quote from: wilfred on May 14, 2017, 05:37:10 amI would rather like to know what Dave thinks about this ...If it does not help, I agree this topic to be deleted.I created this topic in good faith and with good intention.If it help, as the child board "Suggestions" is not often read, maybe this topic should be moved to EEVblog SPECIFIC ?
Laptop power brick teardown - Page 1
Forum section: electronics / general

author: nickdepinet
author_rank: Unknown
timestamp: June 30, 2017, 10:16:03 pm
content: Was watching the new surface pro unboxing on EEVblog2 - Dave should do a teardown on one of these ultra-dense high power bricks "premium" laptops like the surface pro and the macbooks use.
Maybe time for an updated "electronics lab under $1000"? - Page 1
Forum section: electronics / general

author: josecamoessilva
author_rank: Regular Contributor
timestamp: April 21, 2017, 02:16:14 am
content: Been thinking about getting my niece (she's 10) a starter electronics "kit" to see if I canmanipulateinfluenceguide her towards EE/CS. The older "under $1000" and "under $500" videos are good places to start, but maybe there's some new equipment out there that EEVBlog subscribers would be happy to know about?Cheers,JCS

author: nowlan
author_rank: Frequent Contributor
timestamp: April 21, 2017, 02:41:31 am
content: https://www.aliexpress.com/cheap/cheap-electronics-kit-kids.htmlKnock offs of the original snap circuits. Would something like this be more appropriate to a 10 year old?

author: josecamoessilva
author_rank: Regular Contributor
timestamp: April 21, 2017, 03:45:21 am
content: On my 7th b-day (when dinosaurs roamed the Earth), I got my first breadboard; that saved me from a career as a mathematician or physicist and a lot of money since I could easily reuse components. The experience of actually handling components and wires, making my own designs and calculations, that's the experience I want to give her (and her brother, who's now 5, so maybe start him next year).I get the attraction of less grass-roots alternatives like snap circuits and Arduinos, but nothing like building your own circuit, testing it and playing around with actual components. I still have a lot of components and breadboards left at home from my old days, so she can have all that, but I didn't have my own oscilloscope or signal generator (built several) and only got a multimeter by the time I was 11. (Around the time of the K-T meteor.)(On the books & study materials she'll get all my old stuff, plus a few modern books written by former colleagues who are still EE/CS profs. Even my Art Of Electronics, 1st international edition, solder burns on the cover and everything.)Also, her uncle (me) might buy himself a new electronics "kit" for tinkering around at home -- a person needs hobbies and EE/CS is certainly cheaper than most hobbies. (Think golf or collecting bespoke clothing.)
EEVblog & Amp Hour Meetup! - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: April 07, 2017, 06:54:18 am
content: https://www.meetup.com/EEVblog-Electronics-Engineering-Meetup/events/239034621/

author: LapTop006
author_rank: Unknown
timestamp: April 07, 2017, 08:28:31 am
content: Woo!It's really happening!I'll be there.

author: EEVblog
author_rank: Unknown
timestamp: April 07, 2017, 09:41:24 am
content: It's now on Meetup.com!https://www.meetup.com/EEVblog-Electronics-Engineering-Meetup/events/239034621/

author: gnif
author_rank: Unknown
timestamp: April 07, 2017, 09:43:10 am
content: I wont be there, but I can't wait to see some pics and footage!

author: EEVblog
author_rank: Unknown
timestamp: April 07, 2017, 09:54:22 am
content: Quote from: gnif on April 07, 2017, 09:43:10 amNo footage. What happens at the meetup stays at the meetup

author: Cerebus
author_rank: Super Contributor
timestamp: April 07, 2017, 04:39:45 pm
content: Quote from: EEVblog on April 07, 2017, 09:54:22 amI take that means there will be naughty goings on such as teardowns* and other shenanigans**.*The engineer's alternative to hiring a stripper.**Officially my second favourite word, right after autodefenestration.

author: nixfu
author_rank: Unknown
timestamp: April 08, 2017, 03:06:56 am
content: Are we going to get a Chris in the lab video?You also know what would be fun. A video of you guys doing an Amp Hour episode in the same room.

author: andtfoot
author_rank: Unknown
timestamp: April 08, 2017, 10:10:28 am
content: Gah... I'll be in Melbourne. Next time, eh?

author: Brumby
author_rank: Unknown
timestamp: April 10, 2017, 07:15:22 am
content: I'm hoping to be there...If I make it, you'll know me by this:Edit: (post meet up) Forget this ^^^ There were more interesting things to see.

author: EEVblog
author_rank: Unknown
timestamp: April 10, 2017, 07:44:18 am
content: Quote from: nixfu on April 08, 2017, 03:06:56 amLikely not. Believe it or not, even in the same city it's hard to find the time.QuoteWe did one but decided against video.

author: EEVblog
author_rank: Unknown
timestamp: April 11, 2017, 04:36:54 am
content: Remember it's onTONIGHT!

author: Brumby
author_rank: Unknown
timestamp: April 11, 2017, 06:40:00 am
content: I'm on my way.

author: Brumby
author_rank: Unknown
timestamp: April 11, 2017, 06:51:24 am
content: .... soon.

author: EEVblog
author_rank: Unknown
timestamp: April 11, 2017, 10:19:34 pm
content: Photos are up:https://www.meetup.com/EEVblog-Electronics-Engineering-Meetup/photos/27764362/

author: george graves
author_rank: Super Contributor
timestamp: April 12, 2017, 01:00:17 pm
content: Glad you two finally meet. About time!I couldn't help but to think of this......
Heathkit Hero Robot as a Teardown - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: April 02, 2017, 01:49:30 am
content: someone needs to send in a 1980s heathkit hero robot to the Mailbag so, Dave can do a teardown on it.looks like this...\/

author: SeanB
author_rank: Super Contributor
timestamp: April 02, 2017, 09:04:30 am
content: Postal limits on mass might apply though, and shipping heavy stuff gets expensive to stupid rates very fast. Plus sending a 30kg parcel to Dave will likely result in him paying import duties on it, even if the declared value is close to zero they will thumb suck out a value for it.

author: Brumby
author_rank: Unknown
timestamp: April 02, 2017, 09:08:07 am
content: Australian agencies aren't all that bad. If it had some documentation accompanying it that showed it was an old hobbyist kit together with a reasonable value, I would not expect it to be an issue.Shipping cost on the part of the sender, though....

author: SeanB
author_rank: Super Contributor
timestamp: April 02, 2017, 09:47:51 am
content: KMass limit from here to Australia is 25kg, and using the cheapest sea mail large parcel option still is over $200 for that, with a delivery time of 3 to 6 months as well. Airfreight is faster, 3 weeks typical, but for the 25kg parcel it is close to $600, excluding things like tracking and insurance.
How to design mains AC to DC adaptores, for small loads... - Page 1
Forum section: electronics / general

author: Fabiosapplou
author_rank: Newbie
timestamp: April 25, 2017, 10:19:35 pm
content: I'd really enjoy a take on how David would design a steep down mains adaptor to power small loads shuch as a esp8266... Not using the obvious route of a small transformer 50/60hz transformer with regulation...

author: David Hess
author_rank: Super Contributor
timestamp: April 26, 2017, 01:47:15 pm
content: If you do not have other constraints, then there is another way to use a line frequency transformer; include the transformer for line isolation and follow it with a switching power supply. A power factor correction stage could even be used to provide a unity power factor on the input. There are also some EMI advantages since RF filtering can be done at a low voltage.

author: thm_w
author_rank: Super Contributor
timestamp: April 26, 2017, 08:09:51 pm
content: Use an off the shelf module or an existing supply (like a USB supply) and integrate it into your design.http://www.hlktech.net/product_detail.php?ProId=54https://skippy.org.uk/quick-look-at-the-hlk-pm01/I assume you care about low cost here, otherwise you can get good modules from digikey.
Something seems a little fishy... - Page 1
Forum section: electronics / general

author: NateT
author_rank: Newbie
timestamp: March 31, 2017, 10:07:31 pm
content: This seems a little off...

author: grumpydoc
author_rank: Super Contributor
timestamp: March 31, 2017, 10:14:24 pm
content: Something seems like complete bolloxEdit: Ah, yes - should have thought more about the date. It was still the 31sthere.

author: Brumby
author_rank: Unknown
timestamp: April 01, 2017, 02:24:30 am
content: ... and you just know someone's going to try it, before they check the calendar.

author: Brumby
author_rank: Unknown
timestamp: April 01, 2017, 02:26:41 am
content: Scratch that....Anybody who tries it won't even think of checking the calendar...............
the next generation should the eevblog brand grow beyond David Jones? - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: March 17, 2017, 09:12:13 am
content: because of the ever changing technology. eevblog © may need to hold up the historical & cultural milestones in electronics,because of the cult of personality the David Jones © legacy may will last beyond a lifetime.because Dave, your the Steve Irwin of electronics! the walt disney of schematic circuits.the electronics engineering wrangler of Australia. whether its just Dave or two Dave,s. or with others.every brand needs the next generation to keep the legacy alive. so should eevblog grow beyond David Jones?what will electronics be like in 2030? autonomous /driverless cars, the global brain & the singularity in artificial intelligence.5G devices. the fourth industrial revolution, robotic reproduction.

author: W9GFO
author_rank: Regular Contributor
timestamp: March 17, 2017, 10:06:27 am
content: Quote from: jonovid on March 17, 2017, 09:12:13 amYes, but only when there is no other choice. In other words, resist it until it becomes necessary. Growth means more people, which means more salaries, more decisions to be made that take into account the necessity to remain profitable in order to take care of those that depend upon those salaries. Staying small means lots of freedom, ability to take risks. Having lots of people involved means you have to be more careful, play it safe.Or, go bigly and get tremendously profitable where you regain the ability to take risks without jeopardizing peoples' livelyhoods.
Fundamentals Friday - Mosfet Body Diode - Page 1
Forum section: electronics / general

author: dragon-architect
author_rank: Contributor
timestamp: March 01, 2017, 11:11:19 pm
content: So, last night and today, a friend and I got to talking aboutthis ElectroBOOM article(yes, I watched the video; yes my heart skipped beats every time he made sparks fly; dear god I just can't with this guy x.x) about taking advantage of the body diode in a MOSFET to trigger a reverse polarity protection circuit. The conversation led tothis question on the electronics stack exchangeand today I found this two part article about mosfet design basics:Part 1andPart 2.And while all of this looks really cool and radical, and the body diode just comes up as "part of how a mosfet is made", I'd like to suggest a Fundamentals Friday episode about how the body diode works in a mosfet, and how it can be used if it's internally (or even externally) connected to source or drain. Apparently if the diode isn't internally connected, a mosfet can conduct in both directions when switched on. So... why is the diode internally connected in the first place?I could probably go on with questions, and it'd be awesome if Dave could do a FF episode all about this!

author: Random Model Maker
author_rank: Regular Contributor
timestamp: March 14, 2017, 09:52:00 pm
content: In that context I would think that it would also fit in to talk about SCR latchup
Create a Bluetooth circuit - Page 1
Forum section: electronics / general

author: Steveouteast
author_rank: Newbie
timestamp: March 19, 2017, 04:23:27 pm
content: I'd like to suggest a video topic. I want to design a pcb with a Bluetooth chip on it. I understand that as this is a radio, there are regulations such as the FCC's in America that have to be considered. What all is involved to get approvals? Is it better to just use a module with all that already in place? How do we know that one of these modules is really approved and not just falsely labelled as such?

author: DavidDLC
author_rank: Frequent Contributor
timestamp: March 19, 2017, 05:10:18 pm
content: I will go for a module, if you use a BT chip, you may need to program the firmware on it which may no be that difficult if the chip vendor has the tools, but you also need to do the RF calibration.David DLC.
Brainstorming  two Daves on set how improvements with more Cameras Live can help - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: March 08, 2017, 10:35:56 am
content: eevblog Two Dave's circuit design brainstorming video had one Camera with no close-ups but the sound was good.https://www.eevblog.com/forum/blog/product-circuit-design-brainstorming/see how Louis Rossmann of YouTube - capitalism rantrecording a video with two or three Cameras Livestream or save to file.note the Camera close-ups & the circuit still static image. video switcher foot pedal buttons?2017-02-26 Sunday board repair with capitalist commentarycircuit design brainstorming video had one Camera with no close-upsthere is no reason why eevblog can not have improvements with more Cameras on set.no big problem for electronics engineers

author: bktemp
author_rank: Super Contributor
timestamp: March 08, 2017, 11:06:43 am
content: It probably depends on what they are aiming at:The main purpose of this video was brainstorming. Having more footage was only a side product. That's why they didn't produce a more polished video.They could, but it probably would have slowed down the process, because they had to spend more time adjusting the cameras.Doing a multi camera live stream can get quite difficult to have every camera in focus, aimed at the right spot and arrange/switch the best cameras without covering some important part of the background image.One impressive example of a multi camera video setup is Micah Scott 's Youtube channel:https://www.youtube.com/user/micahjd/videosShe uses at least 4 cameras (one fixed camera, a DSLR for closeup, a microscope and one camera for her cat). In addition to that she also has a wireless camera, a camera in her mill and 3D printer and several HDMI capture devices for scopes or PCs.She started a couple of month ago doing live streaming and is constanly improving the setup.

author: EEVblog
author_rank: Unknown
timestamp: March 08, 2017, 11:18:19 am
content: This was never intended to be a video for release, but we figured we'd turn the camera on whilst discussing it and it kinda turned a bit into a public brainstorming discussion.I have the capability to do everything Louis does using X-Split.
Live Giveaway draw on NOW! - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: March 02, 2017, 10:05:16 pm
content: I'm going to do the live draw on my main channel very shortly, don't have the link yet, just go to my main Youtube channel

author: TheAmmoniacal
author_rank: Unknown
timestamp: March 02, 2017, 10:07:57 pm
content: F5ing your channel as we speak!
eevblog t-shirt (bad luck or teespring fail?) - Page 1
Forum section: electronics / general

author: RoTTe
author_rank: Contributor
timestamp: July 09, 2017, 01:34:54 pm
content: Hi there,The old version, comes from frabily? or something like that from a couple years ago (the shipping didn't cost a kidney).The new were from this week on teespring.Yep, no color-balanced, flash, and everything... but believe me, the new "orange" is like a mix from something weird and glitter (I swear that shines with the light!)So, is it normal?The suggestion, another provider for european fans ?
fluorescent displays - new life - Page 1
Forum section: electronics / general

author: loouser
author_rank: Newbie
timestamp: February 18, 2017, 09:08:58 pm
content: Hi Dave, love the forum and your youtube videos. I wondered if you had ever tried to breath new life into tired old and faded flourecent displays and whether it is even possible. Old equipment suffers from these fading especially the displays which feature clocks on constant display in eighties hifi equipment. Wondered if it was worth doing a blog and playing around with different supply power to the sections of a tired display and seeing if they can be reborn. Kind Regards, Andy

author: james_s
author_rank: Super Contributor
timestamp: February 18, 2017, 09:12:16 pm
content: https://www.eevblog.com/forum/chat/vacuum-fluorescent-display-rejuvenation/
Bypass Caps. - Page 1
Forum section: electronics / general

author: mrpackethead
author_rank: Super Contributor
timestamp: February 17, 2017, 02:59:21 am
content: Hi Dave.. Just had a long discussion with a youngster about why we put bypass caps around IC's. This might be a great topic for an EEVBlog.

author: John_ITIC
author_rank: Frequent Contributor
timestamp: February 17, 2017, 04:23:52 am
content: Quote from: mrpackethead on February 17, 2017, 02:59:21 amAlready done:

author: mrpackethead
author_rank: Super Contributor
timestamp: February 17, 2017, 05:01:35 am
content: Well i got it was "a great topic"... :-) I was just too late.
Piezoelectricity - Page 1
Forum section: electronics / general

author: teslatek
author_rank: Newbie
timestamp: February 14, 2017, 02:01:22 am
content: Hello I'm a newbie inventor ,this is my first post on any form, iv beein following dave for a few years now , Id like dave to do a video about piezoelectricity and possible future advances in this technology , but like I said I'm brand new to posting in forums I'm sorry if I'm posting this in the wrong placethankscarter
Bullshit meter it will lock good to Mythbusting time - Page 1
Forum section: electronics / general

author: GreenHW_GUY
author_rank: Contributor
timestamp: February 07, 2017, 10:10:11 am
content: http://15130-presscdn-0-89.pagely.netdna-cdn.com/wp-content/uploads/2013/05/bullshit-detector.png
Rare video switcher to keep an eye out for on ebay. - Page 1
Forum section: electronics / general

author: george graves
author_rank: Super Contributor
timestamp: February 08, 2017, 11:54:10 am
content: Rewind to about 1999 - and there was a company called "Play Inc." - it was a bunch of engineers and founders of Newtek that made the "video toaster" -https://en.wikipedia.org/wiki/Video_ToasterThey started a new company called "Play" - their video box was amazing at the time. It's said to have so much custom silicone in it(22 chips in all), that it was they went millions into debt to make it. And.....it kinda flopped. No one really knows why. It was the right tech at the right time. It was almost too good.Also, you can't call yourself a video editor is you don't know the "Kiki wipe"https://en.wikipedia.org/wiki/Kiki_StockhammerSee @ 0:40 -More info:http://www.patswayne.com/kiki/nab.htmReally would be an epic tear down if you can find one. A true unicorn.
A Suggestion for new fire it up fixing & fault finding videos - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: February 05, 2017, 01:35:57 pm
content: Suggestion for aFire it Upeevblog videos were Dave plays the role of the service technician.an example would be to take an old teardown, say a dead piece of 80s or 90s electronics and raise it from the grave.so it works as new. just to show the service technicians skills needed to do the job.test equipment needed or used & reverse engineering skills esc.
Forum downtime tonight - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: January 06, 2017, 08:23:16 am
content: There could be 15 minutes or so of downtime sometime tonight. Some servers software upgrades are going to happen.

author: nanofrog
author_rank: Super Contributor
timestamp: January 06, 2017, 08:42:45 am
content: Thank you. Appreciate the heads-up.

author: tautech
author_rank: Super Contributor
timestamp: January 06, 2017, 08:44:45 am
content: It's only right I should thank Dave too to keep things balanced.

author: Muttley Snickers
author_rank: Unknown
timestamp: January 06, 2017, 09:21:00 am
content: I've just ordered a couple of pizzas to celebrate the occasion, actually it was too bloody hot here to cook up anyway, currently 33 *C at 8pm and forecast is for 37 *C tomorrow.

author: nanofrog
author_rank: Super Contributor
timestamp: January 06, 2017, 09:32:16 am
content: Want to trade? It's about -2C here right now.

author: george graves
author_rank: Super Contributor
timestamp: January 06, 2017, 09:32:42 am
content: Thanks for keeping the forum running! Perhaps a blog video about the set up?

author: Heszu
author_rank: Contributor
timestamp: January 06, 2017, 06:14:36 pm
content: Quote from: nanofrog on January 06, 2017, 09:32:16 am- 41,3 C here , would happily trade !WBRH
Old BWD Scope for Teardown? - Page 1
Forum section: electronics / general

author: Atreidae
author_rank: Contributor
timestamp: December 19, 2016, 04:24:06 am
content: Hi I havent posted here in aaaagees (I think last time the community was helping me out with a PSU)Anyway, Ive had an old Australian Made BWD 10Mhz scope for quite a while as my main goto scope. I'm not an EE by any means and dont use it much anymore and I've been meaning to give it to Dave whenever I drove up from Melbourne.Well it just so happens I'm flying up on Thursday and could drop it at the Baulkim Hills post office assuming I can get it on the plane with me. (I'm going to be in Castle Hill)I havent opened it myself but im pretty sure it will still have the old school smell and even still has the Made In Australia tag on it.Is this something Dave would be interested in?Does anyone have experience bringing a large metal box on a plane?I'll upload some photos tonight if there is interest.Link to a similar scope:http://www.radiomuseum.org/r/bwd_oscilloscope_509b.html

author: tautech
author_rank: Super Contributor
timestamp: December 19, 2016, 05:27:13 am
content: The manual for this BWD scope is available from Kevin Chant's BWD page:http://www.kevinchant.com/uploads/7/1/0/8/7108231/bwd_509.pdfDave might like to do a CRO Basics and trace the signal path right to the CRT along with a look at the timebase and how it controls the sweep to get the signal we see displayed on screen.
Dave - do you use dropbox? - Page 1
Forum section: electronics / general

author: george graves
author_rank: Super Contributor
timestamp: December 16, 2016, 12:11:11 pm
content: Dave - do you use dropbox?If so, and use the public folder to share photos, files and such, you're about to get screwed.I do, and so do others. There are going to be hundreds of tutorials, posts, PCBs, schematics that are about to disappear this year.Al sorts of images on the web will go poof!Code:Hi _______,We’re always looking to improve the Dropbox sharing experience. The Public folder was the first sharing method we introduced, and since then, we’ve built even better ways for you to share securely and work together with your team.As a result, we’ll soon be ending support for the Public folder. Dropbox Basic users will be able to use the Public folder until March 15, 2017. After that date the files in your Public folder will become private, and links to these files will be deactivated. Your files will remain safe in Dropbox.If you’d like to keep sharing files in your Public folder, you can create new shared links. Just make sure to send the new URLs to your collaborators.In addition to shared links, we have a number of sharing options designed to make collaboration easier and give you more control. To learn more, visit our Help Center.The Dropbox team

author: EEVblog
author_rank: Unknown
timestamp: December 16, 2016, 12:14:47 pm
content: Quote from: george graves on December 16, 2016, 12:11:11 pmYes.QuoteI don't.

author: george graves
author_rank: Super Contributor
timestamp: December 17, 2016, 12:02:00 pm
content: Well, that's unfortunate. Dropbox pulling it's "public" folder is going to be a shit show across many forum and tutorials online. Images will go "404" and never to be seen again. It's kinda a bid deal.Way more then your rant on the drop cam stuff. I was hoping on a good rant from you. Oh well. Carry on!
Siglent SSA3000X-series EMI measurements walkthrough - Page 1
Forum section: electronics / general

author: newbadboy
author_rank: Regular Contributor
timestamp: December 08, 2016, 02:11:45 pm
content: HiWould be great to see you do some basic EMI/EMC measurements for hobby level using the EMI measurement kit (license) for SSA3000X-series.Mostly for makers doing small Pcb's, and how we can do some some kind o pre-EMI/EMC measuremnts. Is this equipment worth to have or not.Cheers!
MyCPU on EEV-Blog? - Page 1
Forum section: electronics / general

author: Synthron
author_rank: Newbie
timestamp: November 20, 2016, 04:08:04 pm
content: Hey Dave,since you haven't answered to my emails I sent you, I'll post it here...I have rebuilt a project called MyCPU from the German Dennis Kuschel and an idea came to my mind: Why shouldn't I send you my MyCPU for a teardown-rebuild-test-video? It is an 8bit CPU based on the 6502, but completely built with discrete logic ICs. just 74HC and 74AC type ICs with some RAMs, ROMs and UART chips. and the best: it is even more powerful than the original 6502! But also it is a hell of a PCB-jungle. Attached is a picture of my (older version) MyCPU at my booth at Pi And More 7 in Germany. I will presenting it again at the Pi And More 9 1/2 at Krefeld in January 2017 next to my 3D-Printer.What would you think about it? Is it worth sending it to you? I would send it in the end of January, because I need it in KrefeldGreetings from Germany
BM235 Available on Amazon Canada - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: December 21, 2016, 09:28:55 am
content: BM235 now available on Amazon Canada:https://www.amazon.ca/EEVblog-BM235-Brymen-Multimeter/dp/B01JZ1ADCO/

author: isometrik
author_rank: Regular Contributor
timestamp: December 21, 2016, 11:22:35 am
content: Just couldn't resist. Just placed an order.

author: ProBang2
author_rank: Frequent Contributor
timestamp: December 21, 2016, 03:55:04 pm
content: Will there be sometime the possibility that it is available from Amazon in Europe, too?
Fundamentals Friday - A Suggestion - Page 1
Forum section: electronics / general

author: German_EE
author_rank: Super Contributor
timestamp: January 29, 2017, 10:30:44 am
content: We haven't had a Fundamentals Friday for some time so have a suggestion. Yesterday I purchased one of those laser tape measures where you place it on the wall, press the button, and a laser pulse bounces off the opposite wall. You then see a digital display showing the distance.Light travels at about a nanosecond a foot or 29.9792458 cm per second if you want metric. An HP time/frequency meter is a big beast with a mains power supply yet this unit measures the difference between the start and received pulse and it fits in my hand. So, how does it work?

author: T3sl4co1l
author_rank: Super Contributor
timestamp: January 29, 2017, 10:49:31 am
content: For that matter, depth field cameras.The fundamental at work here is, you can measure phase much more accurately than you can measure a single-event time.Tim
Dave tests a bunch of proto PCB makers all at once. ProtoPCB round up! - Page 1
Forum section: electronics / general

author: george graves
author_rank: Super Contributor
timestamp: November 03, 2016, 10:28:01 am
content: So I posted this idea on your latest youtube vid about how PCB's are made, but I assume it will be burried in the comments.Here's the pitch.A.) Go to a site likehttp://pcbshopper.com/- find all the major players.B.) Upload a board that you design to test all the different services. I think Dave would be in a good place to do this, as I bet he knows a few tricks that would stay in the design rules, but test their ability to manufacture. (Like that ground pour that didn't connect in one of your videos) - nothing too crazy, but maybe hidden little tests that will be demonstrative.c.) Order the boards all at about the same time, and since your main audience is in the US, have them shipped to the US. That I think will make a bunch of USA people happy, and it's a bit more of an honest shipping time then from China to Australia. (please do this - shipping times to the US is important)d.) Someone shipped the board back back to Dave(I'll do it!), and then Dave reviews them. We get to see them under a microscope, and Dave's honest review about accuracy, silk screen, vias, the whole 9 yards.
Is it necessary to clean PCB before visual inspection? - Page 1
Forum section: electronics / general

author: angy
author_rank: Newbie
timestamp: October 24, 2016, 07:06:35 am
content: My question is before visual inspection at 40x lens of PCbs is it necessary to clean the PCB with alcohol.What happens is after cleaning with alcohol flux residue starts to accumulate between micro controller pins.Which doesn't go off easily .So is it o.k to first to Visual inspect the PCB for solder balls,extra solder etc and if necessary then clean the PCB.

author: SimonWasAnEngineer
author_rank: Contributor
timestamp: October 24, 2016, 08:30:46 am
content: We always cleaned the PCB´s before the visual inspection. I think defects are easier to find without flux residue. But instead of alcohol/isopropanol we used a special flux cleaning solution and deionized water in two separate ultrasonic baths.
Dave, you made it onto Cracked.com - Page 1
Forum section: electronics / general

author: daqq
author_rank: Super Contributor
timestamp: September 09, 2016, 06:21:40 pm
content: Cracked, a humor site mentions Dave. L. Jones in this article, specifically in reference to the Fontus water generator thingamabob:http://www.cracked.com/article_24252_5-technological-breakthroughs-that-are-scientific-nonsense.htmlCongratulations

author: Simon
author_rank: Unknown
timestamp: September 10, 2016, 07:41:58 pm
content: Even they confused W and KW they say it needs a 250 KW panel.
why you dont teardown any old tv camera?? - Page 1
Forum section: electronics / general

author: aqarwaen
author_rank: Regular Contributor
timestamp: August 06, 2016, 06:27:13 pm
content: i mean why you dont try find of theys huge tv cameras and teardown it??i mean theys really cameras what are used by tv station.would love see any that kind teardown

author: NottheDan
author_rank: Frequent Contributor
timestamp: August 06, 2016, 06:44:32 pm
content: Because they are not all that easy to get and pretty pricey besides being heavy and cumbersome to wrangle into the studio. So they are more or less more trouble than they are worth unless one gets sent in in the mailbag (hinthint).

author: SeanB
author_rank: Super Contributor
timestamp: August 06, 2016, 08:06:59 pm
content: Pretty much the same parts as in the small camera, and if you want to see the teardown of one look up Dexterslab2013 here, he has done a nice Sony ENG camera body recently which shows all the parts inside, along with the optical parts as well.The internal lens assemblies are good though to inspect a PCB, nice good quality glass used there. I got them out of an old studio camera that I got on auction for $5. I got around $10 back just on the scrap aluminium in the case and the optical block as well.

author: PA0PBZ
author_rank: Super Contributor
timestamp: August 06, 2016, 08:15:47 pm
content: Also check out this guy:https://www.youtube.com/user/msylvain59
Hardware/Electronics Business topics on the Forum? - Page 1
Forum section: electronics / general

author: suku
author_rank: Contributor
timestamp: September 09, 2016, 10:36:54 am
content: I think there are lot of users on the forum who try to run their own business (including myself), or thinking about starting one. I know there's ton of information available on the interweb but the experience of other forum members would be very helpful.Dave has done a couple of blogs on the topic for exampleEEVblog #106 - Top 5 Tips To Bring Your Product to Market (and why Patents are a BAD idea)EEVblog #887 - The Economics Of Selling Hardware...But I think that there is much more to be discussed:)What do you guys think?
Dave's Leg Teardown - Page 1
Forum section: electronics / general

author: German_EE
author_rank: Super Contributor
timestamp: July 30, 2016, 08:06:22 am
content: After seeing the latest post from Dave I think that a surgery video would be a great idea, just add a quick warning at the start for those who don't like that sort of thing. I went to sleep last night thinking about Dave's surgeon standing there with a scalpel in his hand saying 'Don't turn him on, take him apart!!Best of luck with the recovery dave

author: Brumby
author_rank: Unknown
timestamp: July 30, 2016, 01:05:33 pm
content: I don't think he did a video on the teardown.....

author: PA0PBZ
author_rank: Super Contributor
timestamp: July 30, 2016, 01:15:24 pm
content: Quote from: Brumby on July 30, 2016, 01:05:33 pmhttps://twitter.com/eevblog/status/758282370877272064

author: Brumby
author_rank: Unknown
timestamp: July 30, 2016, 03:33:37 pm
content: That's not the teardown .... that's the repair video.

author: janoc
author_rank: Super Contributor
timestamp: July 30, 2016, 04:45:10 pm
content: Quote from: German_EE on July 30, 2016, 08:06:22 amYikes!Awful joke, that was a surgeon not a pathologist!

author: PA0PBZ
author_rank: Super Contributor
timestamp: July 30, 2016, 06:27:50 pm
content: Quote from: Brumby on July 30, 2016, 03:33:37 pmEvery good repair starts with an (at least partial) teardown!
FF on Thermisters - Page 1
Forum section: electronics / general

author: techie1234
author_rank: Regular Contributor
timestamp: July 12, 2016, 12:15:41 pm
content: What about a Fundamentals Friday on thermisters: some rules of thumb for when should you use them to limit inrush, how to pick the right one for a particular application, etc.? For example, when I've modeled circuits in LTSpice (yes I know there are a lot of idealizations inherent) if you zoom in on the first ms or two you can see some very high amperage drawn into the circuit. If that's anything like how the circuit operates in the real world, it would seem that one is over-drawing past many components' specs if only for a very short period of time - in which case, why don't we use them on virtually everything? Or is the effect simply negligible?

author: uncle_bob
author_rank: Unknown
timestamp: July 13, 2016, 01:16:25 am
content: HiSimple answer to the last part "why don't we use them on everything?":There are other, (generally easy) ways to reduce the issues related to inrush to negligible levels. Inrush limiters have their own failure modes / drop efficiency / add cost. Consider: The beast is a temperature dependent device. It works by getting hot and staying hot. Hot stuff fails, energy is used to keep it hot.Bob

author: techie1234
author_rank: Regular Contributor
timestamp: July 13, 2016, 11:52:00 am
content: Quote from: uncle_bob on July 13, 2016, 01:16:25 amGood point - perhaps the better FF is on various techniques for limiting inrush currents, when to use one vs. another, etc.?

author: uncle_bob
author_rank: Unknown
timestamp: July 14, 2016, 12:53:50 am
content: Quote from: techie1234 on July 13, 2016, 11:52:00 amHiIt's part of the basic design for whatever you are designing. The techniques you use are highly dependent on the gizmo. The most basic of them date to the 1800's when they figured out how to *not* wind transformers ....M= 1.0 is not as good as M = 0.98 or 0.96.Bob
why you dont teardown this??? - Page 1
Forum section: electronics / general

author: aqarwaen
author_rank: Regular Contributor
timestamp: July 07, 2016, 10:08:13 pm
content: do you guys remember theys computers,what sometimes filled entry room and made lots noise.my work place actually had one theys computers.. mostly we used it to make some harder mathematics.normaly it toook like 10 minutes to half hour to make its work .why you dont try find any of theys computers and try it teardown..??

author: Brumby
author_rank: Unknown
timestamp: July 08, 2016, 03:56:01 am
content: I'm only guessing here ... but 'filled an entire room' hints at a possible issue with logistics.

author: SimonR
author_rank: Regular Contributor
timestamp: July 11, 2016, 02:28:00 pm
content: Maybe someone has one they've forgotten about in their attic

author: Kilrah
author_rank: Unknown
timestamp: July 11, 2016, 02:30:49 pm
content: chrigel1234regularly tears down parts of decommissioned supercomputers.
Overwiew Mosfets, Hexfets, IGBTs, all sorts of power controler - Page 1
Forum section: electronics / general

author: RNA2
author_rank: Newbie
timestamp: July 01, 2016, 11:58:29 am
content: Hi Dave, hi everybody,i am quite new here and also not very firm in electronics.One suggestion for a new video blog would be all kinds of mosfets, hexfets, IGBTs and all kind of switching power controller stuff.It is a vast field and hard for a newbee to get a good overview. I am esp. interested in HF capable Mosfets (high frequency switching past the 1 MHz) -so also gate driver circuits for that purpose would be interesting.I am aware that this is slightly going in RF-amplifier directions - but it doesnt need to go that high in frequency.I think this could be very interesting for a huge amount of subscribers, esp. interested in high-power switching, HV-appliances (Tesla coils e.g.).Thanks!
µcurrent's status? - Page 1
Forum section: electronics / general

author: jose347
author_rank: Contributor
timestamp: May 19, 2016, 04:42:15 pm
content: Hi, I will like to know what is the current status on the µcurrents? Recently I ordered one meter and one µcurrent and dont want to say I am desperatebut you know the drill

author: Nozzer
author_rank: Contributor
timestamp: May 27, 2016, 01:22:22 pm
content: I ordered one a few weeks ago from a UK firm Sparky Labs, so would be interested too in the reply.

author: jose347
author_rank: Contributor
timestamp: June 01, 2016, 01:20:49 am
content: https://www.eevblog.com/forum/chat/current-status/

author: Nozzer
author_rank: Contributor
timestamp: June 14, 2016, 01:37:14 pm
content: I received mine from SparkyLabs yesterday.
Interesting Sinclair multi-meter, possible teardown?  - Page 1
Forum section: electronics / general

author: warf135
author_rank: Contributor
timestamp: June 05, 2016, 01:08:34 am
content: Just spotted this cool vintage Sinclair PDM35 multi-meter on ebay UK. Looks like a modified calculator and could be an interesting teardown.ebay uk item number: 172226580094

author: retiredcaps
author_rank: Super Contributor
timestamp: June 05, 2016, 01:30:55 am
content: Scullcom did one already.

author: timofonic
author_rank: Frequent Contributor
timestamp: June 05, 2016, 02:22:32 am
content: I wonder if mixing an advanced scientific calculator/PDA + DMM would be interesting...

author: warf135
author_rank: Contributor
timestamp: June 05, 2016, 07:18:55 pm
content: Thanks Retiredcaps, i didn't look on youtube for other people tearing it down...Timofonic, if Sinclair was still around they would probably do it!!!
What happened to episode #741? - Page 1
Forum section: electronics / general

author: hansibull
author_rank: Regular Contributor
timestamp: June 01, 2016, 07:52:58 am
content: Still waiting for episode #741! Have you forgot Dave?

author: tszaboo
author_rank: Super Contributor
timestamp: June 01, 2016, 08:03:52 am
content: This has been discussed. 741 will be opamp magic, to honor the ua741 (or lm741, not sure anymore).

author: EEVblog
author_rank: Unknown
timestamp: June 01, 2016, 08:17:47 am
content: David2 and I had a big project idea planned, but it didn't turn out right.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: June 01, 2016, 08:49:03 am
content: Also just to fuel the paranoia... did 666 ever get done? I recall that was a saver too...Tim

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: June 01, 2016, 10:21:54 am
content: episode 420 made me hungry.

author: EEVblog
author_rank: Unknown
timestamp: June 01, 2016, 11:19:48 am
content: Quote from: T3sl4co1l on June 01, 2016, 08:49:03 amI can't say why, but I can mention the word Illuminati...

author: borjam
author_rank: Unknown
timestamp: June 01, 2016, 11:28:29 am
content: I thought it was discontinued because it's not ROHS compliant.

author: rrinker
author_rank: Super Contributor
timestamp: June 01, 2016, 12:18:09 pm
content: It was in response to episode 666 that Dave got those Peter Popoff letters...