hybridfree/eevblog-posts huggingface dataset:
Keysight Community Forums Discontinued - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: March 25, 2025, 11:49:58 pm
content: Marco Reps posted this on Xhttps://x.com/MarcoReps/status/1904636584818856037Anyone know how big the forum was?Such a dumb decision. I would have been happy to figure out a way to transfer the contents to the EEVblog forum.

author: squadchannel
author_rank: Frequent Contributor
timestamp: March 26, 2025, 12:50:09 am
content: https://x.com/MarcoReps/status/1904636584818856037isn't it? it came up in the suggestions.Tektronix also suddenly deleted their old php based forum. It would be important to have a backup.https://www.eevblog.com/forum/testgear/old-tektronix-forum-(httpsforum-tek-com)-has-been-deadQuote from: EEVblogI hope you will archive the old Tektronix forum as well.

author: EEVblog
author_rank: Unknown
timestamp: March 26, 2025, 02:49:51 am
content: Existing thread:https://www.eevblog.com/forum/testgear/keysight-community-discussion-forums-discontinued/I'll lock this one.
Best wire strippers for smaller gauge wire?  - Page 1
Forum section: electronics / general

author: artvandalai
author_rank: Regular Contributor
timestamp: March 24, 2025, 04:54:40 pm
content: What are the best wire strippers for small gauge wire? Im ready to upgrade from my cheap chinese iwiss strippers to something more efficient and well made.

author: David Hess
author_rank: Super Contributor
timestamp: March 24, 2025, 05:55:33 pm
content: I like the Ideal 45-125 which goes down to 30 AWG. I use it for Kynar insulated wire wrap wire.https://www.amazon.com/Ideal-Industries-Inc-45-125-Compatible/dp/B07D5SQMLSI guess the Ideal 45-417 is the newer version.https://www.amazon.com/Electrical-45-417-Premium-Reflex-Stripper/dp/B000B61EOE

author: SteveThackery
author_rank: Super Contributor
timestamp: March 24, 2025, 07:44:38 pm
content: I find the sideways-pull type of stripper awkward to use and prefer the style pictured below. It has an end-pull action which I much prefer. Also, the jaw gap is infinitely adjustable right down to zero, so a good quality one will strip the insulation off even the thinnest wires. The downside is that you do need to adjust it, whereas the sideways-pull types typically have several preset jaw gaps for the most common wire sizes.The one I've pictured is just lifted off the Internet. I cannot recommend that particular make (Silverline) because I haven't tried it - mine is a different make.

author: shabaz
author_rank: Frequent Contributor
timestamp: March 24, 2025, 08:05:08 pm
content: Also see here:https://www.eevblog.com/forum/reviews/suggestion-for-wire-stripper-for-small-gauges/

author: Someone
author_rank: Super Contributor
timestamp: March 25, 2025, 12:28:43 am
content: Quote from: shabaz on March 24, 2025, 08:05:08 pmProbably the worst example to pick out of the pool of threads on this topic, more cheap stuff that is barely functional and/or short lived.A better example:https://www.eevblog.com/forum/reviews/looking-for-a-delicate-wire-stripper/or just search for wire stripper and wade through all the crap

author: shabaz
author_rank: Frequent Contributor
timestamp: March 25, 2025, 01:17:39 am
content: Quote from: Someone on March 25, 2025, 12:28:43 amYes, massa. I didn't know there was a competition to find the best thread.There's a mix of wire strippers for all price ranges. That discussion I referenced happens to contain references to top-end wire strippers too, so no, it's not "probably the worst thread". And it's bang on topic.The thread contains decent tools, along with comments from people that include some cheaper tools that may not be great. It's hardly a long thread to click through if you're shopping for wire strippers. You may well want to look at what's available broadly before narrowing it down. And you get what you pay for. Plus it's a more recent thread.
Neutrik NCJ6FA-H Connectors - Page 1
Forum section: electronics / general

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 24, 2025, 10:27:16 pm
content: Are those Neutrik connectors sold at LCSC genuine?https://www.lcsc.com/product-detail/XLR-Cannon-Connectors_Neutrik-NCJ6FA-H_C368458.htmlThe same are 3 to 4 times that price from western distributors. Just want to make sure.

author: themadhippy
author_rank: Super Contributor
timestamp: March 24, 2025, 11:07:49 pm
content: QuoteDepends who you buy from,there showing as $2.92 or at googles exchange rate £2,26.Canford audio, not the cheapest place around,but one i'd trust to sell genuine parts ,have them at £1.58+vat or around $2.45

author: thm_w
author_rank: Super Contributor
timestamp: March 24, 2025, 11:40:34 pm
content: Quality in the photo is so good, and LCSC is trusted to the point I would say yes.Price is not wildly off anyway:https://octopart.com/search?q=NCJ6FA-H&currency=USD&specs=0

author: BrianHG
author_rank: Super Contributor
timestamp: March 24, 2025, 11:58:26 pm
content: Additional sources here:https://www.findchips.com/search/NCJ6FA-Hor here:https://www.tme.eu/en/details/ntr-ncj6fa-h/jack-connectors/neutrik/ncj6fa-h/?utm_source=findchips.com&utm_medium=cpc&utm_campaign=rfq-2025-01-15

author: Simmed
author_rank: Frequent Contributor
timestamp: March 25, 2025, 12:23:26 am
content: Quote from: SiliconWizard on March 24, 2025, 10:27:16 pmthe copy is XJ-006-SU US$0.85so i would think the 6FA is genuine

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 25, 2025, 12:31:29 am
content: Ok thanks.
What Happened to the Capacitors in 2002? - Page 1
Forum section: electronics / general

author: coppercone2
author_rank: Super Contributor
timestamp: March 22, 2025, 06:54:38 pm
content: there was some bad acid going around manBut I will complain that guys youtube channel knocks me out, everyone that was going to reply likely fell asleep and forgot

author: nctnico
author_rank: Super Contributor
timestamp: March 22, 2025, 07:29:41 pm
content: Actually, this problem was around much earlier. Say from the late 1980's to the early 1990's where it comes to surface mounted electrolytics. Lots of test equipment from that era suffers from leaking surface mounted electrolytics.

author: MT
author_rank: Super Contributor
timestamp: March 22, 2025, 07:41:19 pm
content: Sour fish smell from wet electrolytic s i remember already in 1989.

author: factory
author_rank: Super Contributor
timestamp: March 22, 2025, 09:06:51 pm
content: Quote from: nctnico on March 22, 2025, 07:29:41 pmThat is a different, age related problem, due to perished seals after several decades, some new old stock/never used caps suffer in this way.The 2000s era cap failures were a dodgy formula, that caused pressure build-up, leading to them venting, or the can being blown off.David

author: andy2000
author_rank: Frequent Contributor
timestamp: March 23, 2025, 03:11:19 pm
content: Quote from: factory on March 22, 2025, 09:06:51 pmI agree that it was a different problem, but I can remember those early SMD electrolytics leaking when they were less than 10 years old. The problem was fixed sometime in the mid 90's, and to this day, I've never seen a mid 90's or newer SMD electrolytic leak. The same problem also affected certain lines of through hold caps too. Those were also leaking badly after just a few years.

author: Shock
author_rank: Super Contributor
timestamp: March 23, 2025, 06:23:24 pm
content: If it smells like fish you're standing too close.

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: March 23, 2025, 08:11:21 pm
content: Two big bangs in the middle of the day, i've been scared to hell

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: March 24, 2025, 08:23:36 am
content: The odor was someting between fish and burned plasticJapanese capacitors are very reliable, i don't know why so people are scared by the caps
Is the Wayback Machine archiving itself? - Page 1
Forum section: electronics / general

author: fzabkar
author_rank: Super Contributor
timestamp: March 14, 2025, 10:20:42 pm
content: I found the following at the Wayback Machine:https://web.archive.org/web/20220326041437/https://web.archive.org/web/20140325105500/http://www.connecticc.com/pdfs/trompeter_catalog-3.pdfhttps://web.archive.org/web/20140325105500/http://www.connecticc.com/pdfs/trompeter_catalog-3.pdfAm I having a brain fart, or is the Wayback Machine archiving itself?

author: MadTux
author_rank: Frequent Contributor
timestamp: March 17, 2025, 10:26:49 am
content: Waybackception?

author: ledtester
author_rank: Super Contributor
timestamp: March 17, 2025, 10:52:41 am
content: You can find out the reason for the capture by:1. Go to:https://web.archive.org/web/20220326041437/https://web.archive.org/web/20140325105500/http://www.connecticc.com/pdfs/trompeter_catalog-3.pdf2. Click on the "1 capture" link in the upper left corner.3. Select 20224. Hover over March 26th5. Hover over 4:14:37 - this will bring up the "why links" under the time line

author: the-happy-diode
author_rank: Newbie
timestamp: March 20, 2025, 01:04:23 am
content: they have recently been involved in legal action, and have changed the way they are do things.
Aneg TH203 + Aneg ST180 + Relife RL-001G all for $12 (tax included) - Page 1
Forum section: electronics / general

author: u666sa
author_rank: Frequent Contributor
timestamp: March 22, 2025, 03:57:03 am
content: Sometimes aliexpress just wants you to buy. For 12 bucks got me theseI had no plans to buy any of these. But for this price, I had to buy them.
dsschat bygone members here? - Page 1
Forum section: electronics / general

author: alpher
author_rank: Frequent Contributor
timestamp: March 15, 2025, 02:59:57 am
content: Nostalgia just hit me. Wonder if you can solve an easy puzzle.Made it deliberately fuzzy. What is it?

author: caseyse
author_rank: Newbie
timestamp: March 15, 2025, 03:54:09 am
content: Used to glitch and forcibly inject a jump to bypass "the Judge"?

author: coppercone2
author_rank: Super Contributor
timestamp: March 15, 2025, 07:01:38 am
content: it looks like some sort of electronics cardthose dip switches look nice though. Real nice. I can't believe we got away from those some how.

author: alpher
author_rank: Frequent Contributor
timestamp: March 17, 2025, 12:26:02 am
content: It's a Detonator 2 converted to dish, as per no1be4me instructions.

author: alpher
author_rank: Frequent Contributor
timestamp: March 17, 2025, 12:35:08 am
content: It's funny how goggle seems to "forget" things easyli. Back in the day if you searched for "detonator2" you'll find almost nothing but the pics of the actual DetII loader.Now even most famous Mikobu3 renders only this:

author: alpher
author_rank: Frequent Contributor
timestamp: March 17, 2025, 12:58:05 am
content: I just find it shocking that there's noone here from then probably largest forum on the net in early 00's

author: seedkey
author_rank: Contributor
timestamp: March 21, 2025, 05:25:19 am
content: Haha thanks for posting this. I remember it well.I just assumed it was still there . I never thought about looking for it.
Pinout wiring of Photmultiplier variable HV power supply? - Page 1
Forum section: electronics / general

author: VintageCollector
author_rank: Newbie
timestamp: March 19, 2025, 05:57:03 am
content: Hello everyone!I have this variable Photomultiplier High Voltage power supply (K and M PN 1037). It is rated for 8kV @ 0.1mA max. I do not see any potentiometers to make any voltage adjustments either, which leads me to believe it maybe controlled remotely via the serial plug. There are 9 wires as in the picture. I can think of the following connections ( LV +, LV -, Pot-REF, Pot - WIPER, Pot - COM, HV COM) no idea what could be the other, just my wild guess.Any one has come across this power supply and could possibly help with the pinout if so? I think it maybe an Agilent- Bruker PSU, but I could be wrong.Thanks guys!
Component identification - Page 1
Forum section: electronics / general

author: Hornnumb2
author_rank: Regular Contributor
timestamp: March 18, 2025, 01:31:24 am
content: I think this component is bad but I don’t know what it is. The one labeled AF6V Help please. Thanks

author: squadchannel
author_rank: Frequent Contributor
timestamp: March 18, 2025, 02:38:33 am
content: AO3415?

author: Hornnumb2
author_rank: Regular Contributor
timestamp: March 18, 2025, 03:52:00 am
content: I have 2 close to each other, can I test them in circuit or must they be removed to get correct reading? I am getting different reading on them. I am labeling them bottom left as 1, bottom right as 2 and top as 3. In diode mode on the top component I get with red probe on 1, I get OL on 2 and 3. With black probe on 1, I get 1.4 on 2 and 3. On the bottom component with red probe on 1, I get 1.69 on 2 and 1.96 on 3. Black probe on 1, I get 2.o climbing to OL on 2 and 3. They both have same part number on them. Beside the AWF chip under the 100 inductor. There is a capacitor and diode that with meter in contuitity mode and red probe on board ground I get beep on both side of those 2 components.

author: Kharn_the_Betrayer
author_rank: Contributor
timestamp: March 18, 2025, 05:52:51 pm
content: The SOT-23 package and voltage behavior makes me think the chip is a FETNot sure why the polarity would switch unless the manufacturer used the same part number for N and P types?

author: Hornnumb2
author_rank: Regular Contributor
timestamp: March 19, 2025, 01:07:38 am
content: So those readings are correct? I guess I could inject voltage at the shorted cap and see what gets hot. Any other suggestions? Thanks
Splashdown! Technology for target accuracy - Page 1
Forum section: electronics / general

author: VK3DRB
author_rank: Super Contributor
timestamp: March 19, 2025, 12:01:49 am
content: Big success in the splashdown today, returning four space travellers back to Earth. It was brilliant coverage including the well-rehearsed recovery process. The dolphins were a bonus. The seas in the Gulf of Mexico near Tallahassee were very calm.How is the target so accurately predicted? The capsule would have been subject to unpredictable forces during reentry.Or it is a combination of calculations for approximations, and then the parachutes have their angles biased in order to hit the target, according to a GPS feedback loop?

author: coppercone2
author_rank: Super Contributor
timestamp: March 19, 2025, 01:04:13 am
content: https://www.faa.gov/sites/faa.gov/files/about/office_org/headquarters_offices/avs/III.4.1.7_Returning_from_Space.pdf

author: Andy Chee
author_rank: Super Contributor
timestamp: March 19, 2025, 01:09:56 am
content: Apollo's recovery area was approximately 55 to 90km in diameter. Dragon's recovery area is approximately 18 to 37km in diameter.Basically, Dragon has the benefit of modern communications technology, which allows its trajectory to be predicted with better precision than Apollo, re-entry forces notwithstanding.

author: coppercone2
author_rank: Super Contributor
timestamp: March 19, 2025, 01:11:43 am
content: The only good way to make it accurate is to make it fast which is not good for people or recoverable cargoI think a super accurate one would have some kind of damper for humans (like some sort of gel) and then giant thrusters to slow it down right before it gets to the target. Otherwise you basically need a space shuttle. I don't think they found a 'cheap' way to make something like a 'drop pod'. I think people said you can use breathable liquid to fill the lungs and empty organs but there is still a problem with the brain, I think its like getting a really bad concussion if you were to try.

author: Haenk
author_rank: Super Contributor
timestamp: March 19, 2025, 08:16:50 am
content: Quote from: Andy Chee on March 19, 2025, 01:09:56 amI guess the "area of possible touchdown" dramatically decreases as soon as atmosphere is hit, and when you position the recovery vehicle in the center, update position to keep a mile away from touchdown point, recovery can start within minutes. Probably faster than finding your own car in a parking lot.
DIY Micro RC Truck & Trailer - Page 1
Forum section: electronics / general

author: Picuino
author_rank: Super Contributor
timestamp: March 15, 2025, 06:45:42 pm
content: Amazing!

author: Picuino
author_rank: Super Contributor
timestamp: March 16, 2025, 10:52:44 am
content: The electronic control part starts at 5' 30''.
Google's CLEVER SLIME on AI access to PHOTOS - Page 1
Forum section: electronics / general

author: RJSV
author_rank: Super Contributor
timestamp: February 27, 2025, 02:47:44 am
content: I'm not a criminal, but I often think like one.So, when I see a clever, lawyer language DODGE, especially worded to, um, wiggle just clear of actual truth, I notice...and wish to grab a quote or two.Partially to use, maybe, LOVE or in WAR.Somehow my search terms got me into REDDIT, but there was a question posed, regarding Google AI sampling personal photo archives and even using partial copies in other venues (aside from a user's photo storage activities).Here's my best recolection of googles 'stiff' response:Quote: "Google does not sell your photos to anyone, nor do they sell your personal information to anyone.'CLEVER CLEVER. !!Notice they bypassed the question which pertains to re-using select portions of user personal photos. No, they say...changing the essense of the question. Then mixed generalities about general selling of data.Heck, I've seen cases like that his, where the respondent listed their street address, in their response, just to pad.things outBrilliant wiggle-out, from decent answer !

author: rhodges
author_rank: Frequent Contributor
timestamp: March 01, 2025, 01:21:31 am
content: Lois Rossmann had a video where he talked about a sleazy company changing their terms and conditions to say something like:"We may use your information to train our AI..."And when confronted about this, they claimed:"We have not, and do not use your information to train our AI..."This kind of reply is insulting. We are not stupid. We know the difference between the past, the present, and the future tense.Assholes.Off-topic: Many of us have heard ads for investments that try to claim their past performance assures future results. And then (as required) they must let us know that they just lied. "Past performance does not guarantee future results."Assholes.

author: John B
author_rank: Frequent Contributor
timestamp: March 06, 2025, 02:08:51 am
content: Corporations: "You are confused..... so very confused about the words we wrote."

author: coppercone2
author_rank: Super Contributor
timestamp: March 16, 2025, 07:04:28 am
content: speaking of clever slime, I wonder how many people miss google cache right now. The internet is so good and reliable we don't need it anymore. I can't believe people were actually thinking that's remotely true
[AU] Sourcing a battery, am I missing something? - Page 1
Forum section: electronics / general

author: rthorntn
author_rank: Frequent Contributor
timestamp: March 22, 2025, 01:41:07 am
content: Hi,I have a pair of WF-1000XM3 and the batteries need replacing.The repair looks easy:https://www.ifixit.com/News/35377/which-wireless-earbuds-are-the-least-evilBecause the battery tech in them is 5 years old I feel that I should be able to get some cells with better capacity.I'm having trouble figuring out where to source these batteries, like apparently there are VARTA CoinPower A5 that were announced a year ago, where do I find a couple of these CP1254?I'm guessing that these batteries are only sold to OEM's or only in high quantities...Thanks!

author: u666sa
author_rank: Frequent Contributor
timestamp: March 22, 2025, 04:01:22 am
content: On ali. I just searched 1000XM3 battery and got me these resultshttps://www.aliexpress.us/w/wholesale-1000XM3-battery.html?spm=a2g0o.home.search.0I don't know what I would have found in Russia. Perhaps in Australia you are given different search results?

author: rthorntn
author_rank: Frequent Contributor
timestamp: March 22, 2025, 04:37:41 am
content: Thanks.Sorry, I should have been more specific I'm looking for genuine new batteries from "trusted" companies and not ebay or aliexpress, original batteries look to be about $15 each and a lot of those aliexpress battery pairs are suspiciously cheap.

author: Poroit
author_rank: Frequent Contributor
timestamp: March 22, 2025, 08:39:04 am
content: G'day rthorntn,Have you tried Master Instruments?https://www.master-instruments.com.au/pages/sydney-nsw-head-office.html
Type B braided 5 meters - Page 1
Forum section: electronics / general

author: u666sa
author_rank: Frequent Contributor
timestamp: March 15, 2025, 01:53:08 pm
content: What's happening these days?I bought me two 5 meter braided Type A male to Type B male cables back in Russia. Each one was 3 bucks. Excellent quality. Worked well with my mic and power supply.Here in America I can't find it.No problem with Type A to Type C. But Type B is hiding somewhere. Especially the 5 meter one. No problems with finding 3 meter cables.
Browser plugin to disable YouTube's auto-translation - Page 1
Forum section: electronics / general

author: madires
author_rank: Super Contributor
timestamp: March 14, 2025, 04:55:38 pm
content: If you like to get rid of YouTube's annoying auto-translations there's a plugin for Chrome and Firefox: YouTube No Translation- Homepage:https://youtube-no-translation.vercel.app/- Chome:https://chromewebstore.google.com/detail/youtube-no-translation/lmkeolibdeeglfglnncmfleojmakecjb- Firefox:https://addons.mozilla.org/de/firefox/addon/youtube-no-translation/Quote
Blood Moon Eclipse 2025 - Page 1
Forum section: electronics / general

author: joeqsmith
author_rank: Super Contributor
timestamp: March 14, 2025, 06:50:18 am
content: Taken at 4:00 and 6:30 UTC, hot off the press.

author: Gyro
author_rank: Super Contributor
timestamp: March 14, 2025, 09:58:52 am
content: I know there are orbital distance variations but in 2 1/2 hours?Nice photo, we didn't get a total one here.
UMW clone Opamps on Digikey - Page 1
Forum section: electronics / general

author: deadly_penguin
author_rank: Contributor
timestamp: March 18, 2025, 04:54:41 pm
content: Looking on Digikey for opamps today I came accross a company called UMW selling clones with what look like straight copies of the datasheets - they've got at least TI (https://www.digikey.co.uk/en/products/detail/umw/OPA340NA/24889474) and ADI (https://www.digikey.co.uk/en/products/detail/umw/AD8606ARZ/24889997).Anyone bought from them? Do they actually perform as advertised - or even close?

author: thm_w
author_rank: Super Contributor
timestamp: March 18, 2025, 10:32:11 pm
content: LCSC sells them as well:https://www.umw-ic.com/enhttps://www.lcsc.com/brand-detail/11853.htmlThe datasheet is a straight copy of TI in almost all aspects. All of the specs are identical, the distributions are just copied. That makes me suspicious.I would do a full qualification of them, after the garbage brand we saw in the last thread (EVVO):https://www.eevblog.com/forum/chat/warning-lm317k-duds-from-digikey/(seem they finally pulled the stock from digikey)
MOVED: OT: If AI-s can consume torrented data, why not humans? - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: March 13, 2025, 06:59:23 am
content: This topic has been moved toChatGPT/AI.https://www.eevblog.com/forum/index.php?topic=453835.0
Why It Was Almost Impossible to Make the Blue LED - Page 1
Forum section: electronics / general

author: Picuino
author_rank: Super Contributor
timestamp: March 11, 2025, 07:42:32 am
content: I'm not sure if it has been posted before. I did a search and did not find it.Anyway I found this Veritasium video interesting enough to post it here.

author: Kleinstein
author_rank: Super Contributor
timestamp: March 11, 2025, 08:53:03 am
content: It's an interesting Video, but already a bit older.I remember one of the early presentations of the first blue laser diodes by Nakamura. The violett blue 405 nm does not look very bright, unless it hits some phospor. Go a bit scary pointing the laser around and later showing that output power could go beyond 100 mW, already for the early prototypes.

author: newbrain
author_rank: Super Contributor
timestamp: March 11, 2025, 07:19:51 pm
content: Here is a picture of Nakamura Shuji, Akasaki Isamu and Amano Hiroshi I took at the Nobel lecture in 2014!I have many others of that year and the year before, here are Higgs (right) & Englert (left):Edit: unfuck who wrote the attachment related code.

author: thm_w
author_rank: Super Contributor
timestamp: March 11, 2025, 09:49:20 pm
content: https://www.eevblog.com/forum/chat/the-race-and-bumpy-road-to-create-the-blue-led/
Old green LEDs with integrated resistor? - Page 1
Forum section: electronics / general

author: ledtester
author_rank: Super Contributor
timestamp: March 11, 2025, 02:38:09 am
content: I have some green LEDs I acquired many, many years ago.The odd thing is that they don't have a consistent voltage drop - it's like they have an integrated resistor.My test setup is:Vsupply --- 2K Resistor --- LED --- GNDVdrop is measured across the LED.Here are some measurements and calculations.I is computed from Vsupply and Vdrop; R_LED is computed assuming Vdrop = 1.8V + I*R_LED.Code:V_LED1.8VsupplyVdropIR_LED2070.006500800.0155.650.004675823.5104.20.002900827.6630.001500800.032.10.000450666.721.80.0001000.0So it appears that the LED contains an integrated resistor of about 800R.What that a thing?

author: edavid
author_rank: Super Contributor
timestamp: March 11, 2025, 03:02:40 am
content: Quote from: ledtester on March 11, 2025, 02:38:09 amIt certainly was. The ones you have were probably intended for use with a 12V supply. I have some "5V" green LEDs with a 300 ohm resistor.I am not sure if they are still made.ETA: They were common in the multi-LED indicator blocks that were sold by Dialight and others. In the through hole days, resistors took up a lot of extra board space.

author: bdunham7
author_rank: Super Contributor
timestamp: March 11, 2025, 03:15:09 am
content: Did you get them from All Electronics?They used to sell a lot of those, or at least they had them available for many years. I may still have some somewhere.

author: jfiresto
author_rank: Frequent Contributor
timestamp: March 11, 2025, 07:00:59 am
content: Quote from: edavid on March 11, 2025, 03:02:40 amKingbright still makesa few.

author: Wallace Gasiewicz
author_rank: Super Contributor
timestamp: March 11, 2025, 01:42:40 pm
content: There are quite a few LED with resistor made for replacement of other lights in radios. This is very popular among repair people. Saves time rather than putting a LED together with a resistor. Most of these are for 12 volt lights.

author: tom66
author_rank: Super Contributor
timestamp: March 11, 2025, 03:52:39 pm
content: These types of LEDs were and still are common in panel mount applications where you just want a 5V or 12V indicator LED and don't want to heatshrink a resistor to the back of the LED - simplifies production processes.

author: ledtester
author_rank: Super Contributor
timestamp: March 11, 2025, 05:29:19 pm
content: Quote from: bdunham7 on March 11, 2025, 03:15:09 amI have ordered stuff from All Electronics but I'm pretty sure I got them from a local surplus store - perhaps even 20+ years ago.In any case I only recently realized they had an integrated resistor when I accidentally wired one up without one and it didn't die.
Identify Part - Page 1
Forum section: electronics / general

author: pbharper
author_rank: Newbie
timestamp: March 10, 2025, 03:37:56 am
content: I am trying to identify this part, I am guessing it is an ESD device or voltage regulator of some kind based on the placement on the board, I don't have a schematic but am working on generating one. I relaize there is not much to go on here but and helpful guidance on IDing the part would be great!

author: fzabkar
author_rank: Super Contributor
timestamp: March 11, 2025, 12:17:06 am
content: Quote from: pbharper on March 10, 2025, 03:37:56 amJust show us a photo of the PCB so that we can see the part in the context of its surroundings.
What level of charge do tablet page turners apply to display surface? - Page 1
Forum section: electronics / general

author: EE-digger
author_rank: Frequent Contributor
timestamp: March 08, 2025, 06:50:05 pm
content: Picked up a page turner for my wife so she can keep her hands under blanket (it is cold here).$18, on sale for $12 freakin dollars from Amazon Prime. Two enclosures, three pushbuttons, two pcb, 3 LED, spring clamp, two USB jacks, batteries (rechargeable). RF between the units (just the button push to turn) You can't compete with that !So, it uses RF between the receiver and hand held transmitter but no WiFi or BT at all. Thought about it and was figuring it had to be a charge and thanks to AI, I was able to verify. It applies a small charge to a small metal plate in the little clamp you attach to right edge, touching the display surface.Anyone know how much of a charge is applied? It must at least double, triple or more, logic levels in the unit.

author: amyk
author_rank: Super Contributor
timestamp: March 09, 2025, 05:21:28 am
content: Capacitive touchscreens sense a change in capacitance, so all that device is likely doing is connecting a larger capacitance on-demand. Lots of information on this:https://electronics.stackexchange.com/questions/19435/triggering-a-capacitive-sensor-electronicallyhttps://electronics.stackexchange.com/questions/446489/how-do-i-trigger-capacitive-touch-screen-electronically-without-handshttps://electronics.stackexchange.com/questions/60385/how-to-use-a-capacitive-touch-screen-without-a-human-hand
When was the last time you this! - Page 1
Forum section: electronics / general

author: watchmaker
author_rank: Unknown
timestamp: March 05, 2025, 03:36:39 pm
content: I have a penchant for vintage MPX radios. No idea why.I opened up this Panasonic RE-747 to see what available space I had for new speakers. Pic below shows what I found; I forgot all about that practice; long ago and far away.Also, they apparently had planned on making these portable but scuttled the idea. Look at how deep they buried the case screws! Square drive to boot.

author: tom66
author_rank: Super Contributor
timestamp: March 05, 2025, 04:44:15 pm
content: They probably shared the injection mould with a product that used batteries, hence the unused battery door.

author: watchmaker
author_rank: Unknown
timestamp: March 05, 2025, 06:16:48 pm
content: When was the last time you encountered a consumer electronic device with the schematic enclosed?The battery compartment was just an aside.

author: TimFox
author_rank: Super Contributor
timestamp: March 05, 2025, 06:53:27 pm
content: Old AA5 5-tube radios usually posted the socketed tube locations in the cabinet somewhere, but not the schematic.

author: Analog Kid
author_rank: Super Contributor
timestamp: March 05, 2025, 11:09:01 pm
content: My Califone phonograph (people in the US: remember those when you went to school in the 1960s?) has a schematic sheet glued to the inside of the cabinet:

author: Xena E
author_rank: Frequent Contributor
timestamp: March 06, 2025, 11:36:23 pm
content: Quote from: Analog Kid on March 05, 2025, 11:09:01 pmLive chassisanda mic socket? Niiiice~~~~~The Hong Kong made vest pocket transistor radios of the nineteen sixties and seventies often had a tiny schematic pasted inside...Grundig TV sets also had quite comprehensive service sheets stapled inside the cabinets, up to the early 1980s.KoreanTaiwanese? manufacturers Topward even used to supply full blown service manuals for their budget test equipment, 1990s. (Just not inside the case).X
Embedded world 2025 - Page 1
Forum section: electronics / general

author: tszaboo
author_rank: Super Contributor
timestamp: March 03, 2025, 02:51:20 pm
content: I'm going to this event, it's in 1 weeks time.I was wondering if anyone else is going?Do you see any interesting exhibitors?For me I saw a few exhibitors that got interesting I'm going to visit. I mean the not work related ones, otherwise I will hunt for components as usual.Uni-T: I hope to see their desktop instrumentsJLCPCB: Maybe it's the first time I see them on an exhibitionEspressif: Also a firstBatronix: They sometimes giveaway discount codes.Siglent + Rigol: I would like to see how their bigger equipment looks and feels like. They are next to each other.

author: BFX
author_rank: Frequent Contributor
timestamp: March 05, 2025, 07:36:43 am
content: I will be there 1st day as almost every year.There is much more that I can't tell what is more interesting.TI, ST, NXP, Infineon, Lattice, AD, Keysight, Tektronix, Farnell, Arrow, DigiKey, etc.https://mc-e5b0d581-4409-4340-bc8b-9266-cdn-endpoint.azureedge.net/-/media/project/nuernberg-messe/embedded-world/embedded-world/pdfs/embedded-n-pdf-exhibition-guide-2025.pdf

author: JLCPCB Official
author_rank: Regular Contributor
timestamp: March 05, 2025, 09:36:09 am
content: Look forward to meeting you at Embedded World 2025 !

author: tszaboo
author_rank: Super Contributor
timestamp: March 05, 2025, 02:15:25 pm
content: Quote from: BFX on March 05, 2025, 07:36:43 amYeah, these are the companies that I'll be visiting for work related stuff.Usually they have some sort of gadget to show some of their newest IC or something like that. I found it hard to actually get new information, as these companies put everything on their website.Unless you have a meeting scheduled.Though Digikey usually puts up a good show.Quote from: JLCPCB Official on March 05, 2025, 09:36:09 amSee you there.

author: tszaboo
author_rank: Super Contributor
timestamp: March 11, 2025, 08:49:39 pm
content: I had a very cool first day, run into Mike Engelhardt at the Qorvo stand. I've seen a just released Rigol VNA, that goes to 26GHz. PCBway is opening a European sales office. I had so many meetings.

author: BBBbbb
author_rank: Unknown
timestamp: March 12, 2025, 07:37:05 am
content: I’m disappointed with the conference part, most of the talks seem to belong down at the exhibition (sales pitches).Had better general talk about CRA from the Linux foundation than all the others put together, and that one was supposed to only address Zephyr and CRA.
Inside the VW ID.4 Matrix Headlights - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: March 06, 2025, 12:28:50 pm
content: Most auto manufactures already have a similar level of complexity in their lighting systems now.Still an interesting tear down.

author: thm_w
author_rank: Super Contributor
timestamp: March 06, 2025, 10:31:58 pm
content: Interesting:- 7 low beam lenses/LEDs on top- 11 high beam LEDs on bottomThe 2023 model 3 matrix LED had 4 rows of about 28 segments per row:https://teslamotorsclub.com/tmc/threads/model-3-y-projector-headlight-disassembly.253706/100 total LEDs.Samsung pixell:https://led.samsung.com/automotive/automotive-modules/pixcell-led/They've reduced this in the 2024 version, presumably wasn't worth the expense. I can't find a teardown but probably in that same range as you show ~20 LEDs.

author: tom66
author_rank: Super Contributor
timestamp: March 06, 2025, 10:55:12 pm
content: Quote from: thm_w on March 06, 2025, 10:31:58 pmInteresting given the ID.x matrix headlights have gotten pretty good reviews, whereas the Tesla solution has been met with a "meh" response by many. Better than the non-matrix, but far off the state of the art.When I had a Model Y on hire in the US, I found the auto headlights to be practically useless. Most of the rural roads in the US have reflective boundary markers along them, and the car would constantly see those as car headlamps when the parallax was just right, and switch off the high beams. You couldn't have the lane assist/autopilot functions on without auto high beams. In the end, the solution was to just hold the high beam switch on until I saw another car. It really bothered me that such broken software was in a production car but I suppose, it's not uncommon for Tesla.

author: thm_w
author_rank: Super Contributor
timestamp: March 06, 2025, 11:21:00 pm
content: Maybe its a lens design thing, the id4 lenses look more complex and purposefully designed.Quote from: tom66 on March 06, 2025, 10:55:12 pmThere is no software support for matrix headlights in North America yet.The auto highbeams are notoriously shitty though yeah. Not sure if this will help at all.

author: tszaboo
author_rank: Super Contributor
timestamp: March 06, 2025, 11:32:03 pm
content: Quote from: tom66 on March 06, 2025, 10:55:12 pmI was driving before a Tesla S after dark for about 15 minutes, and it's a good thing that there are no guns allowed in Europe, because I was ready to violently decommission that car.
How to Make an Impact Sensor with MPR121 for an Electronic Santur? - Page 1
Forum section: electronics / general

author: hsoft_project
author_rank: Newbie
timestamp: March 09, 2025, 10:30:27 am
content: Hello everyone,I am working on an electronic Santur (a Persian hammered dulcimer) and need help designing an impact-sensitive sensor using the MPR121 capacitive touch controller. My goal is to detect both the intensity (force) and occurrence of hammer strikes on the sensor.🔹 The problem:The MPR121 works perfectly when I touch the sensor with my hand, but it does not detect hammer strikes (mallet hits) properly. I have tried different configurations, but the sensor does not respond well to non-conductive objects like my mallet. I need a way to make the sensor detect hits from external objects (mallets, sticks, or any non-human conductor) without requiring direct hand contact.🔹 Current setup:MPR121 with custom capacitive touch sensor: Two aluminum foils with a thin plastic sheet between them.ESP32 microcontroller handling the I2C communication.Threshold values adjusted, but still ineffective for hammer strikes.🔹 What I have tried so far:Lowering the Touch and Release Thresholds (Touch: 6, Release: 3).Adjusting Charge Time to improve sensitivity.Adding a floating ground to improve capacitive response.Changing the sensor material (thin copper tape, aluminum foil).Modifying the debounce settings for better impact detection.🔹 What I need help with:How can I modify my capacitive sensor design so that it reacts to hammer strikes and not just hand touch?Are there any circuit modifications or material changes that could improve sensitivity to external impacts?Would an alternative approach (such as combining capacitive sensing with piezoelectric sensors) be more effective?Any advice, suggestions, or alternative sensor recommendations would be greatly appreciated!Thank you in advance! 😊
Starship's Eighth Flight Test (2nd attempt) - Page 1
Forum section: electronics / general

author: wraper
author_rank: Unknown
timestamp: March 03, 2025, 11:15:41 pm
content: Stream is live, will launch in 30 minutes.Second attempt:https://x.com/i/broadcasts/1lPKqMQbAWLKb

author: tom66
author_rank: Super Contributor
timestamp: March 03, 2025, 11:22:53 pm
content: Damn you, I wanted to sleep!

author: wraper
author_rank: Unknown
timestamp: March 03, 2025, 11:54:51 pm
content: Quote from: tom66 on March 03, 2025, 11:22:53 pmYour wish was granted

author: brucehoult
author_rank: Super Contributor
timestamp: March 03, 2025, 11:54:59 pm
content: and scrubbed for today

author: wraper
author_rank: Unknown
timestamp: March 06, 2025, 09:43:51 pm
content: Second attempt:https://x.com/i/broadcasts/1lPKqMQbAWLKbLivestream should start in about an hour and launch in hour and a half.
Tektronix Logo and Wizard Demo Generator for Oscilloscope For Sale Ebay - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: March 16, 2025, 07:13:14 pm
content: From the Tek Museum.Ebay link.....https://www.ebay.com/itm/116521398563

author: EPAIII
author_rank: Super Contributor
timestamp: March 17, 2025, 11:28:14 am
content: Looks cool!I am wondering if it is a new item or a NOS?

author: Haenk
author_rank: Super Contributor
timestamp: March 19, 2025, 08:25:29 am
content: Quote from: EPAIII on March 17, 2025, 11:28:14 amObviously new, as it uses an Atmel 328 (as could be seen and as stated in the description).
Has Tenma gone belly up? - Page 1
Forum section: electronics / general

author: watchmaker
author_rank: Unknown
timestamp: March 04, 2025, 06:11:05 pm
content: I spent 15 minutes trying to find their website. Can only get an Ohio Chamber of Commerce blurb with a phone number.Looking for a schematic for the 72-6670 Isolation Transformer. Picked one up and isolated side showed 42Vac between ground pin and live. I did resolve it by reflowing a couple solder joints (now 1 Vac) but it would still be good to have. Xformer is 1on the siloated side and .8on the line side. Makes sense because of the difference in wire gauges (7 A fuse on iso, 14 A fuse on passthrough).Trust but verify.Thanks!

author: mendip_discovery
author_rank: Super Contributor
timestamp: March 04, 2025, 07:42:40 pm
content: I think they are owned by Farnell/Newark/Element14 grouphttps://www.element14.com/news/farnell-rebrands-its-private-label-collection-as-multicomp-pro/

author: edavid
author_rank: Super Contributor
timestamp: March 04, 2025, 08:02:22 pm
content: Tenma schematics are hard to find, because all Tenma equipment was made by other companies and private labeled by Farnell/Newark/Element14. You have to find the equivalent OEM unit and then dig up the schematic for that. F/N/E itself doesn't seem to have any service info.

author: Jeff eelcr
author_rank: Frequent Contributor
timestamp: March 06, 2025, 12:17:32 am
content: Well that sucks, although I have a schematic on my power supply the instruction manual refers to the service manual for additional information.I thought Tenma was its own company sold thru others.Jeff

author: bdunham7
author_rank: Super Contributor
timestamp: March 06, 2025, 04:24:45 am
content: Quote from: Jeff eelcr on March 06, 2025, 12:17:32 amIt originally was and the OP's isolation transformer was likely made long ago in Ohio. I guess they're just a rebadging brand now. Newark still sells a lot of Tenma-branded products, but likely none are made in Ohio anymore.

author: Dougmc
author_rank: Contributor
timestamp: March 07, 2025, 02:53:33 am
content: Mcm electronics sold tenma, which newark bought mcm.I had a tenma vom meter. Inside on the pcb was another name.I search that guy had the info I neededTry search any info inside the unit,name,part numberDoug
Do Electrons Really Have "Intrinsic" Angular Momentum? - Page 1
Forum section: electronics / general

author: joeqsmith
author_rank: Super Contributor
timestamp: March 03, 2025, 10:38:47 pm
content: Below are a couple of links to other videos I found of interest. I made my own video but my lack of education comes through and I still am still clueless about it.https://www.eevblog.com/forum/rf-microwave/experimenting-with-waveguides-using-the-litevna/msg5532587/#msg5532587https://www.eevblog.com/forum/rf-microwave/experimenting-with-waveguides-using-the-litevna/msg5540969/#msg5540969Showing my own attempt to replicate another spin experiment.https://www.eevblog.com/forum/rf-microwave/experimenting-with-waveguides-using-the-litevna/msg5570297/#msg5570297

author: Sassy Taste
author_rank: Contributor
timestamp: March 05, 2025, 11:08:01 pm
content: That's great. Was the guy in the video a physics or physic's teacher? I'm sorry, but I've seen some better or smarter nerds around. Than that guy. Where was this? I didn't pay attention if he mentioned a company he's working for. Or University. On the video.additional comments: The big misconception about electricity was great. You can turn your lights on and off or dim the lights in the house from your iPhone. Setting up those electrical wall outlets kits they sell. That's great. And installing them? The guy made the kit. Wow...!

author: KE5FX
author_rank: Super Contributor
timestamp: March 06, 2025, 12:09:04 am
content: Guessing that Action Lab has discovered the obscure quantum effect known as "hysteresis."
The Grover ColorTran Converter - Page 1
Forum section: electronics / general

author: ledtester
author_rank: Super Contributor
timestamp: March 03, 2025, 11:55:16 pm
content: This was available for free at my local FreeGeek store.Just thought I'd share it here in case anyone has any memories/stories of it or similar devices.

author: themadhippy
author_rank: Super Contributor
timestamp: March 04, 2025, 12:38:45 am
content: presume thats the same Colortran who merged with Berkey to form Berkey Colortran,manufacturer of all sorts of theatre and film goodies,including some of the first memory lighting desks.

author: jonpaul
author_rank: Super Contributor
timestamp: March 04, 2025, 12:19:53 pm
content: Excellent post,In 1980s was designer for Berkley Colortran in Hollywood, I had designed an IC dimmerr control console.UK origin of ColotTran is little know in USA. (Color TRANsformer)its a Variac , changes incandescent lamp color temperature and brighnesss by a limited range of mains voltage adjustment.curves of CT vs watts/voltageare from the physics of an incandescent tungsten filament.GE had a calculator slide rule.https://donklipstein.com/incchart.htmlEnjoy,Jon
Toys Under High voltage - Tickle Me Elmo Has A Seizure - Page 1
Forum section: electronics / general

author: Smokey
author_rank: Super Contributor
timestamp: March 02, 2025, 05:59:39 am
content: hahahah..omg... the scream... hahahahah

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 02, 2025, 10:20:08 am
content: That is toy mistreatment!

author: coppercone2
author_rank: Super Contributor
timestamp: March 02, 2025, 10:41:13 am
content: bald kid from toy story

author: golden_labels
author_rank: Super Contributor
timestamp: March 04, 2025, 03:53:24 am
content: Laughed hard. The position it died in is juuuuust perfect.But also the moment the term “adult-only content” gets widened.
Any info on the details of this microwave oven food temperature sensor - Page 1
Forum section: electronics / general

author: ornea
author_rank: Unknown
timestamp: March 02, 2025, 09:20:51 am
content: I was hoping someone maybe able to share information on this senor Before I attempt to reverse engineer it.I am guessing it is a food temperature sensor for the auto-reheat and auto-cook features.It is 3 pin with a small hole in the front face.I have spent sometime searching and only found a similar image in a microwave parts kits that did not list the parts or what machine it was for.My next move if no info is to attempt to power it up and probe and decode the data. (Assuming it transmits data and not simply an analog device)Edit: It maybe a humidity sensor. However, searching "microwave oven humidity sensor" yields images that are similiar but different enough to make me think it is not a humidity sensor.

author: BeBuLamar
author_rank: Super Contributor
timestamp: March 02, 2025, 11:48:03 am
content: Where is it located in the microwave oven? I don't think it's a temperature sensor or even humidity sensor.

author: fzabkar
author_rank: Super Contributor
timestamp: March 02, 2025, 05:17:03 pm
content: https://www.ebay.com/itm/313444550176(GE Genuine OEM WB24X10057 Microwave Humidity Sensor JES1460DS2BB)https://i.ebayimg.com/images/g/7W8AAOSwsltgQ4wd/s-l1600.jpghttps://www.coastparts.com/lookup/234910/1596218#diagramhttps://www.coastparts.com/diagram/4/00150600/00150631.i06/900/900(5011 is the humidity sensor)

author: Halcyon
author_rank: Unknown
timestamp: March 03, 2025, 01:53:24 am
content: Microwaves don't directly measure the temperature of food during their "sensor" defrost/reheat functions. It relies on the detection of humidity/steam and pre-defined programs.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: March 03, 2025, 03:36:34 pm
content: Apparently, some use a microphone to detect when popcorn starts to stop popping. I think the humidity-based ones rely on some standard bag size because the mini bags burn in my oven, ie not enough steam is released for the oven to consider it "done".