hybridfree/eevblog-posts huggingface dataset:
Mouser shipping to Dubai - Page 1
Forum section: electronics / general

author: negativ3
author_rank: Regular Contributor
timestamp: August 13, 2025, 09:04:23 pm
content: Just went through the checkout process for a small order <200 bucks, shipping to Dubai is $75 by FedEx (Mousers automation) excluding tax and duty upon receipt.Anyone had luck using a forwarding co in US to Dubai?$75 is a stretch given the usual is $20 to Thailand.Thanks

author: thm_w
author_rank: Super Contributor
timestamp: August 13, 2025, 10:38:29 pm
content: Digikey charges the same $75 it looks like.Quotes for me (depends on weight): Fedex IC - $30, UPS - $40, DHL - $75Just google USA reshipper and you can look up their prices, its probably going to cost you near ~$75 in the end, unless you are OK with it taking 1 month to arrive:https://www.shipito.com/en/shipping-calculator

author: negativ3
author_rank: Regular Contributor
timestamp: August 14, 2025, 03:01:56 pm
content: Yes, gonna have to bulk up an order to justify that little lot.

author: tom66
author_rank: Super Contributor
timestamp: August 14, 2025, 03:19:13 pm
content: Any more local supplier of the parts? Or consider using LCSC since Dubai seems friendlier with China/HK.

author: negativ3
author_rank: Regular Contributor
timestamp: August 15, 2025, 01:10:21 am
content: I hadn't considered a parts order without a PCB. Thanks for that!
Nixie clock identification help - Page 1
Forum section: electronics / general

author: black-cat
author_rank: Contributor
timestamp: August 12, 2025, 06:05:00 pm
content: Long time no post!I picked up a pair of non-functional nixie clocks from facebook for £30 the pair. I'm trying to ID them and find a schematic. The seller had bought them as n-f with the plan to fix them and lost interest.There is a Winbond W78 micro on the main board and the rest is logic and discrete.The only marking on the PCB is 'Lighting Tech Nixie Clock'. Chip date codes indicate 2006/07 vintage. The build quality is poor at best, LOTS of hot snot and bodge wires! It is hard to tell if these were kit builds or sold as a complete unit. There was a 3.3v LDO soldered to a bridge rectifier mostly wrapped in elec tape rattling around under the main board. The enclosures are neatly made, not DIY drill and file. 110v powered with a fixed US plug.One was pre-disassembled and the other still in its case. 4 of the 6 tubes lit up on the one that was still together.My ultimate plan is likely to pull the tubes and use them on something more modern. But I'd like to at least try and get these functional just to confirm if the tubes all work.

author: jonpaul
author_rank: Super Contributor
timestamp: August 12, 2025, 06:25:15 pm
content: If tubes have an IN code, its the usual Russian garbage, probably made from Ukraine or China.Many thousands of similar types.We got a Japanese clock with fine construction, about 15 yrs ago still working.Lookout for a new one.Jon
[UK] Cool Components closing down - Page 1
Forum section: electronics / general

author: tom66
author_rank: Super Contributor
timestamp: August 11, 2025, 06:40:59 pm
content: Just noticed that these guys - who used to be pretty good stockists of a modest variety of Sparkfun and Adafruit kit in the UK - are closing down. That's a shame.https://coolcomponents.co.uk/Their stated reasons:QuoteAnyway, as can be seen there is a clearance sale on, though I didn't spot anything I immediately wanted (looks like all the Pi boards are gone already).

author: woofy
author_rank: Frequent Contributor
timestamp: August 12, 2025, 08:41:06 am
content: Brexit was a huge pain point for many companies. Such a shame it contributed to their closure.I purchased my first 3D printer from them many moons ago, a Tiertime UP.

author: SteveThackery
author_rank: Super Contributor
timestamp: August 12, 2025, 12:15:21 pm
content: Quote from: woofy on August 12, 2025, 08:41:06 amIt was also a great excuse. Not our fault - blame Brexit.

author: tom66
author_rank: Super Contributor
timestamp: August 12, 2025, 12:29:41 pm
content: Quote from: SteveThackery on August 12, 2025, 12:15:21 pmNote how very few businesses welcome it, though.It is almost as if the benefits, where they exist, are really quite small... and for many businesses it is difficult to do business with Europe now (extra paperwork for VAT, customs, etc., checking differences between UKCA and CE, longer delays in processing). Even if it adds only 5% more cost to doing business with the EU, it's 5% that your European competitors don't suffer.

author: SteveThackery
author_rank: Super Contributor
timestamp: August 12, 2025, 01:46:49 pm
content: Quote from: tom66 on August 12, 2025, 12:29:41 pmI agree with all that. Businesses go to the wall all the time, but I've noticed it's rarely their fault - they like something to blame.

author: Zero999
author_rank: Super Contributor
timestamp: August 12, 2025, 02:40:13 pm
content: Quote from: SteveThackery on August 12, 2025, 01:46:49 pmIt just seems like an excuse. There are plenty of successful companies outside of the EU.
Funny discovery: EEVBlog's Al. Give.+ Live Show video was published 55 years ago - Page 1
Forum section: electronics / general

author: Revan
author_rank: Contributor
timestamp: August 02, 2025, 09:38:31 am
content: Because I wanted to know if Dave had made a new video about KiCad version 9, I searched for KiCad on his channel and found the following funny entry next to his video "Altium Giveaway + Live Show". Unfortunately, the 55 years do not remain when you click on the video.This is the first time I’ve found something like this, and I wanted to share it with you.Here are two screenshots of it:The error appears for me both when logged in and logged out. You can check it for yourselves here:https://www.youtube.com/@EEVblog/search?query=kicad.

author: Whales
author_rank: Super Contributor
timestamp: August 02, 2025, 10:32:58 am
content: Can confirm, I met Dave when he was young, he looked the same as he does today. He used to practice his public speaking in front of a "livecine" device, ramble on about "coinage of the future" and treated a stolen automobile registration plate like it were a trophy.

author: Nominal Animal
author_rank: Super Contributor
timestamp: August 02, 2025, 02:34:15 pm
content: (This is because the timestamp for that video is for some reason zero, Youboob servers store video timestamps in Unix format, and Unix epoch,(time_t)0is1970-01-01 00:00:00 UTC, 55.6 years ago.)

author: Revan
author_rank: Contributor
timestamp: August 02, 2025, 03:47:06 pm
content: Quote from: Nominal Animal on August 02, 2025, 02:34:15 pmThank you, that explains this oddity.

author: SiliconWizard
author_rank: Super Contributor
timestamp: August 03, 2025, 12:50:40 am
content: Quote from: Revan on August 02, 2025, 03:47:06 pmThat and, of course, the ubiquitous habit of developers not to check inputs and value ranges.

author: steve30
author_rank: Frequent Contributor
timestamp: August 11, 2025, 11:05:14 am
content: I encountered this phenomenon last year. It showed up in Youtube Studio when someone else linked to one of my  unlisted videos. 54 years ago would have been 1970 so I figured it was probably something to do with Unix time.Glad to see I'm not the only one time-travelling.
Original Amiga Prototype / CES 1984 Booth Recreation VCF Mountain View CA - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: August 09, 2025, 10:36:22 pm
content: Video from the VCF West in Mountain View California.A recreation of what the Commodore booth looked like in 1984 at CES.Interview and tour with Dale Luck, one of the original engineers.His tour is about two minutes in.Amazing wire wrapped prototypes of what would become the original chipset.
Rigol DP832 Ch3 (5V/3A) ripple/noise on V ramp donw - Page 1
Forum section: electronics / general

author: mvkakati
author_rank: Newbie
timestamp: August 05, 2025, 06:42:14 am
content: Hi All,I'm using Channel 3 (5V/3A) of the Rigol DP832 to test a non-inverting op-amp circuit and encountered an unusual issue. When ramping the output voltage down, I noticed some noise or ripple appearing on the output of my circuit. Initially, I suspected the op-amp might be oscillating or possibly even a counterfeit part. However, I tried multiple op-amps and the issue persisted across all of them.Eventually, it occurred to me that the problem might be coming from the power supply itself. After some testing, I confirmed that whenever I ramp down the voltage from 5V to 1V on Channel 3 with a 10kΩ load resistor, I see the same ripple or noise on the channel output (as shown in the attached image).I tested Channels 1 and 2 with similar ramp-up and ramp-down sequences, and they performed normally. Channel 3 also behaves fine during ramp-up — the issue only appears during ramp-down.Has anyone else experienced this with the DP832? Any insights into what's going on internally with Channel 3 would be appreciated.Thanks in advance

author: RoGeorge
author_rank: Super Contributor
timestamp: August 05, 2025, 11:48:42 am
content: Not surprised, DP832 can onlysourcecurrent, it can notsinkcurrent. During a voltage ramp-down, somebody needs to sink/drain out the energy that was stored in the output capacitor of the DP832 (it has about 1000uF, don't recall the exact value, but it is not negligible small, and it is in parallel with the output binding posts, right where you connect the wires).I would try adding a small value resistor to discharge the DP832 capacitor, say a 50..100\$\Omega\$/2W in parallel with the Ch3 output, that might help. Keeping the wires short between the DP832 and the opamp might help, too.Proper way would be to keep the DP832 at a constant value, and use a signal generator to generate ramps.

author: thm_w
author_rank: Super Contributor
timestamp: August 08, 2025, 06:34:29 pm
content: OP: are you just setting the output on the front panel from 5V to 1V? Does the same behavior happen if you just set the output to 5V then turn it off?I don't see this same behavior on DP832A with no load on output, about the same ramp down (80ms).CH3 has a larger output capacitance, but I don't see why that would make it more susceptible to this kind of oscillation.Quote from: RoGeorge on August 05, 2025, 11:48:42 amAs with most half decent PSUs, it can sink some current.All channels have a ~40mA current sink to linearly discharge the output capacitors. So you don't turn off the output at 10V, go and connect a 3.3V board to it, and its fried.There is no need to have a resistor across the output.

author: Grandchuck
author_rank: Super Contributor
timestamp: August 11, 2025, 12:34:03 pm
content: I tried it and cannot duplicate the issue. Have you discovered any more about this?
Anyone a Arcam FMJ C31 (retrofit phono stage) ? - Page 1
Forum section: electronics / general

author: onesixright
author_rank: Frequent Contributor
timestamp: March 09, 2018, 02:11:17 pm
content: Anyone a Arcam FMJ C31?I wrote Arcam asked if its possible toretrofita phono stage? Didn't have a answer (yet).At the time its was a option you could buy. Looking at the PCB (photo below) I don't see any unpopulated area for this stage. Therefor I assume its a PCB thats mounted separately.I tried looking up some tear-down photo's but I can't find a whole lot, just one of the inside, here:http://usr.audioasylum.com/images/y2016/02/149075/P1090844.JPG.This one doesn't have the phono stage. From the manual I understood it should be mounted on the right bottom side (picture above). Well at least thats where the RCA jacks are located. Below the jacks is a MM/MC switch.Backside (phono top right):http://img.aussieaudiomart.com/uploads/large/1281444-arcam-fmj-c31-preamplifier-in-black-no-phono.jpgMaybe someone knows how the phono-stage is built in?Thanks.

author: Kiwiindo
author_rank: Newbie
timestamp: August 09, 2025, 06:43:24 am
content: I have a Arcam FMJ C31 and have been considering installing an MC/MM Stage, I may have to build and/or design it. Wondering how you got on or if you found a solution?Thanks in advance
How/Where to buy German connector?  - Page 1
Forum section: electronics / general

author: all_repair
author_rank: Frequent Contributor
timestamp: August 08, 2025, 08:06:47 am
content: Sometime I have need of some special electrical connector and normally they are from German that could not be found in the non-German world. If I do ask the German OEM, they normal refer to some local guy that deal with military or other highly precision part resellers (Singapore). Normally, the work cannot justify the high addon by the middle man.If there is something like digikey or mouser of Germany ? that would be very helpful.Comments? leads?

author: nctnico
author_rank: Super Contributor
timestamp: August 08, 2025, 08:15:31 am
content: These questions can only be answered if you give us the exact manufacturer and part number.

author: all_repair
author_rank: Frequent Contributor
timestamp: August 08, 2025, 08:24:39 am
content: This time, I am looking for Fischer connector, Fiberoptics series, part number: F01 P01 Potting Set L41 D3.5" .

author: Roehrenonkel
author_rank: Frequent Contributor
timestamp: August 08, 2025, 09:03:09 am
content: Hi,Fischer is from switzerland (just like Lemo).Have you tried contacting them direktly?https://fischerconnectors.com/en/contact/....they are all over the place, even on Guernsey.If you need just one piece, maybe ask for a sample? ;-)Good luck

author: jonpaul
author_rank: Super Contributor
timestamp: August 08, 2025, 11:10:18 am
content: YOUR COUNTRY?

author: Zoli
author_rank: Frequent Contributor
timestamp: August 08, 2025, 02:18:09 pm
content: Quote from: jonpaul on August 08, 2025, 11:10:18 amQuote from: all_repair on August 08, 2025, 08:06:47 amSometimes helps understanding the OP...

author: ferdieCX
author_rank: Regular Contributor
timestamp: August 08, 2025, 02:56:46 pm
content: Quote from: all_repair on August 08, 2025, 08:06:47 amhttps://www.conrad.com/

author: 0xdeadbeef
author_rank: Super Contributor
timestamp: August 08, 2025, 03:07:56 pm
content: Conrad has become more of a market place mostly for consumer stuff.Of course there are German branches of Mouser, RS, Digikey etc.If it has to be German, maybe Bürklin, but they are kinda small:https://www.buerklin.com/en/Or if Switzerland is more fittinghttps://www.distrelec.ch/
Are forum user activity stats broken? - Page 1
Forum section: electronics / general

author: wraper
author_rank: Unknown
timestamp: August 08, 2025, 10:03:44 pm
content: Even though my sleep routine is pretty much screwed up, I'm quite sure I'm not sleeping at 5PM. I see similar pattern for other forum users from Europe. And I have a correct time displayed next to my profile picture. So is this just me, user stats or time is broken in general?

author: Andy Watson
author_rank: Super Contributor
timestamp: August 08, 2025, 10:13:36 pm
content: I suspect that the time line on those stats is tied to the timezone of the server - wherever that is.

author: wraper
author_rank: Unknown
timestamp: August 08, 2025, 10:15:16 pm
content: Quote from: Andy Watson on August 08, 2025, 10:13:36 pmI'm quite sure it was fine when I checked it in the past and matched time zone selected in my settings.

author: thm_w
author_rank: Super Contributor
timestamp: August 08, 2025, 11:26:11 pm
content: Says I post at 2am so its off by about 12h.Where is the server located again?

author: RoGeorge
author_rank: Super Contributor
timestamp: August 09, 2025, 06:44:30 am
content: Log off from your forum account, and you should see the server time (look at the time of the most recent post in the forum main page). Then login and see if there is any time difference.Either way, I don't think that chart has any use/significance.

author: Ian.M
author_rank: Super Contributor
timestamp: August 09, 2025, 08:24:55 am
content: The forum used to run on Australian Eastern Standard Time, but a few years back it changed to UTC as two layers of 'summer time' was causing time offset problems for many users. Maybe this timeshift fouled up the stats?Incidentally, EEVblog hosting is in Ogden, Utah, USA. Seehttps://www.eevblog.com/forum/chat/the-big-eevblog-server-fire/

author: Halcyon
author_rank: Unknown
timestamp: August 09, 2025, 12:03:23 pm
content: Quote from: Ian.M on August 09, 2025, 08:24:55 amAh there you go! I stand corrected.

author: Zero999
author_rank: Super Contributor
timestamp: August 09, 2025, 01:52:28 pm
content: I just assumed it's because the forum runs on Australian time,My activity on this forum reflects my sleep cycle, shifted by approximately 12 hours. I normally go to bed some time between 10pm and 11pm and wake between 7am and 8am. There are times when I post in the night/very early morning, when I can't sleep. There are peaks close to when I have a coffee break at work.and get home in the evening.Ideally, the forum should all run on UTC and apply the user's time zone, when calculating their forum activity vs time.
CTS part ID request  - Page 1
Forum section: electronics / general

author: nagz
author_rank: Contributor
timestamp: August 07, 2025, 05:29:49 am
content: Hi folksI pulled this CTS component out of an old device used to test military cryptographic devices.It looks like some sort of variable resistance/potCan anyone help with an IDCouldn’t track anything through googleCheers

author: thm_w
author_rank: Super Contributor
timestamp: August 07, 2025, 09:30:19 pm
content: https://www.ebay.ca/itm/363337646455

author: John Coloccia
author_rank: Super Contributor
timestamp: August 07, 2025, 10:05:23 pm
content: Well, that's not what I was expecting. Learn something new everyday.
Group buy for PCB's or kits - Page 1
Forum section: electronics / general

author: zappa916
author_rank: Newbie
timestamp: August 10, 2025, 12:48:41 am
content: Im new to the group and just wondering whether there's a sub forum or sticky thread for people to trade or offer surplus PCB's for sale\trade for stuff they purchased off PCB houses in quantities.Im ordering 10 PCB's for a audio signal tracer kit and happy to share these around as Im only going to build two. Same as kits.

author: Cyclotron
author_rank: Unknown
timestamp: August 10, 2025, 02:57:06 am
content: Quote from: zappa916 on August 10, 2025, 12:48:41 amI think the proper place is the "Buy/Sell/Wanted" section.https://www.eevblog.com/forum/buysellwanted/
Looking for John Deere Display and CommandARM Simulator Offline version - Page 1
Forum section: electronics / general

author: martonmiklos
author_rank: Contributor
timestamp: August 06, 2025, 08:08:37 pm
content: Hi folks,I am looking for a software called John Deere Display and CommandARM Simulator Offline.I am only interested in the offline version, regardless of version number.Both installer and installed and zipped version could be useful for me.I am developing an open source IsoBus terminal:https://github.com/Open-Agriculture/AgIsoVirtualTerminaland I have a theory that the internal CAN traffic could be accessed and routed to my terminal for testing purposes.
Identification for SMD IC - Page 1
Forum section: electronics / general

author: Icuol2218
author_rank: Newbie
timestamp: August 05, 2025, 09:05:43 am
content: Hi,I need help to identify this smd IC on matherboard wih marking MS-11. I cannot find any related info of this IC in internet.Thank you in advance.

author: squadchannel
author_rank: Frequent Contributor
timestamp: August 05, 2025, 09:23:44 am
content: MS-11 by RICHTEK. but i cant found datasheet. custom chip?https://www.google.com/search?q=ms-11+richtek

author: Icuol2218
author_rank: Newbie
timestamp: August 06, 2025, 01:29:16 am
content: Thank you very much for your help, really appreciate for it.

author: squadchannel
author_rank: Frequent Contributor
timestamp: August 06, 2025, 01:37:29 am
content: If it's a computer, you might be able to find a schematics search for it. What is this used for?

author: JacobPilsen
author_rank: Regular Contributor
timestamp: August 06, 2025, 08:23:25 am
content: Comparing to others RICHTEK datasheets, only "MS= : Product Code".SoRICHTEK "MS= : Product Code" filetype:pdfresults inRT4722AC:https://13099392.s21i.faiusr.com/61/ABUIABA9GAAgi5jj0gUowOCrgwc.pdf(Triple DC-DC Boost Converter for AMOLED)Otherwise:https://www.recomb-omsk.ru/published/SC/html/scripts/doc/Richtek_Marking_Code.pdf

author: fzabkar
author_rank: Super Contributor
timestamp: August 06, 2025, 08:34:11 am
content: It's identified as MS-11PQV, but no datasheet.

author: squadchannel
author_rank: Frequent Contributor
timestamp: August 06, 2025, 09:04:20 am
content: Quote from: JacobPilsen on August 06, 2025, 08:23:25 amI found MS "=" early on, but its "-"

author: JacobPilsen
author_rank: Regular Contributor
timestamp: August 06, 2025, 09:24:16 am
content: I'm sorry.I underestimated that equals sign versus simple hyphen is part of Product Code itself.
Why is this RF adapter more expensive than this other one - Page 1
Forum section: electronics / general

author: veedub565
author_rank: Frequent Contributor
timestamp: August 03, 2025, 07:32:59 pm
content: I'm just curious here, why there might be such a price disparity between these two SMA - N-type adaptersMini Circuits DC-18GHz £27.78https://www.mouser.co.uk/ProductDetail/Mini-Circuits/NM-SF50%2B?qs=xZ%2FP%252Ba9zWqbAhvXISLLttw%3D%3D&srsltid=AfmBOor_bd0cSJMAJX6DlFvxPovFoa0a8WJfnm2qPbGDFlMx3kOCHxdpRadiall DC-11GHz £63.62https://www.mouser.co.uk/ProductDetail/Radiall/R191329000?qs=u27TDONJy9Q7iy9EqzfM3Q%3D%3DSo the Mini Circuits one is specced to a higher frequency (18GHZ) and has flats on it to torque it up. Yet it's half the price of the Radial one Are we paying for the name here with Radiall, or is there more to it.

author: DimitriP
author_rank: Super Contributor
timestamp: August 03, 2025, 08:19:29 pm
content: Stainless steel vs brass & berrylium copper. + markup + manufacturers' pixie dust and you end up with a higher priceGood thing you don't need a right -angle one:https://www.pasternack.com/sma-jack-n-plug-right-angle-adapter-pe91568-p.aspxIf you make a right turn and look at aliexpress... it's a different story altogether :https://www.aliexpress.us/item/3256809206640715.html

author: veedub565
author_rank: Frequent Contributor
timestamp: August 04, 2025, 06:36:25 am
content: Yes I guess so, Brass and Berrylium are more expensive materials. It's hard to make a case for the Radiall one though when the MiniCircuits one has better specs. Although something tells me brass and Berrylium is better than stainless steel.Quote from: DimitriP on August 03, 2025, 08:19:29 pmMind you, wait until you start looking at 1.8mm and 1mm adapters
Boeing 737 MAX 8 Landing Gear Catches Fire - Page 1
Forum section: electronics / general

author: SiliconWizard
author_rank: Super Contributor
timestamp: July 27, 2025, 02:09:29 pm
content: The landing gear of an American Airlines Boeing 737 MAX 8 catches fire just before takeoff at Denver on July 26th.https://aviationa2z.com/index.php/2025/07/27/american-airlines-737-landing-gear-fire-at-denver/No victims (just one minor injury from evacuation).They mention a likely maintenance problem. What could it be?

author: John Coloccia
author_rank: Super Contributor
timestamp: July 27, 2025, 02:20:40 pm
content: Quote from: SiliconWizard on July 27, 2025, 02:09:29 pmProbably just an aborted takeoff. The brakes can get hot enough to smoke, and even catch fire. It's not a super big deal, with the biggest danger being a tire bursting during evacuation. So sometimes you just sit tight and wait for the emergency crew to do their thing.

author: langwadt
author_rank: Super Contributor
timestamp: July 27, 2025, 02:31:43 pm
content: Quote from: John Coloccia on July 27, 2025, 02:20:40 pmafaiu the wheels have a plug of some low melting point metal to release the pressure if it gets too hot, rather than explode

author: John Coloccia
author_rank: Super Contributor
timestamp: July 27, 2025, 03:17:46 pm
content: New video. Tire blew on takeoff, that's all.

author: John Coloccia
author_rank: Super Contributor
timestamp: July 27, 2025, 03:43:52 pm
content: Quote from: langwadt on July 27, 2025, 02:31:43 pmYup, they do.

author: jc101
author_rank: Frequent Contributor
timestamp: July 27, 2025, 03:55:51 pm
content: Seems like a lot of people were heading down the chutes clutching their bags. I'd rather just got a plane if it was on fire.

author: SiliconWizard
author_rank: Super Contributor
timestamp: July 27, 2025, 04:46:45 pm
content: Quote from: jc101 on July 27, 2025, 03:55:51 pmApparently, there was a passenger that was seen clinging to his luggage more so than to his child and that got viral on social media in no time.

author: tom66
author_rank: Super Contributor
timestamp: July 27, 2025, 05:09:59 pm
content: Quote from: jc101 on July 27, 2025, 03:55:51 pmSaw that too. Leave your damn bags on the plane people! Getting bags slows the evacuation down, and that fire could have been WAY worse than that, you have no idea until you evacuate. Stuff can be replaced. You, and others, cannot.The worst offender I know for this where people grabbing bags killed others is the Sukhoi crash after apparent lightning caused avionics failure and the captain tried to fly a manual, overweight approach, which went badly wrong:

author: John Coloccia
author_rank: Super Contributor
timestamp: July 27, 2025, 05:23:41 pm
content: For this, and other reasons, I advocate for passenger ejection seats.I mentioned that to a friend the other day. He asked, "but where would you store the parachutes?"I'm like, "parachutes?"
Beidu - Help to access some FPGA documentation on Beidu. - Page 1
Forum section: electronics / general

author: bingo600
author_rank: Super Contributor
timestamp: July 12, 2025, 09:04:19 am
content: Just bought a Cyclone IV board on Ali.https://www.aliexpress.com/item/1005009306876743.html?I asked seller for documentation , and received this link to BaiduQuoteI have no access to Baidu , and can't seem to get it working.I have given up on BaiduI asked the seller to provide it in another way: e-mail or wetransfer.But we seem to have some communications issues , even w. google xlate.Could some kind person download the file for me, and e-mail or otherwise transfer it to me ?e-mail will be provided via PM./Bingo

author: NightMoth
author_rank: Contributor
timestamp: July 13, 2025, 01:22:13 am
content: Hello, here is file from baidu

author: bingo600
author_rank: Super Contributor
timestamp: July 13, 2025, 09:35:34 am
content: Quote from: NightMoth on July 13, 2025, 01:22:13 amThank you so muchEdit:I'm not experienced in HDL/QuartusJust spend a few hours scratching my head, as none of the examples worked in 13.0-sp1 linuxQuartus just hung ...I then deleted all chinese characters in directory names.Now it worksLesson learned ...No chinese characters in file/directory names, in my setup.

author: bingo600
author_rank: Super Contributor
timestamp: July 25, 2025, 06:54:35 am
content: I just discovered that the FPGA board has no connection on Jtag (Pin4) Vtgt (Vtarget), supplies the "Target voltage" for the programmer driverchips.This means programming won't work, until you add a "bodge wire" from "Board Vxx" to Jtag Vtgt pin.The "Ali pict" (attached) mentions2.5v as Vtgt.But i have also seen someone mention, that they used 3.3v ad Vtgt.I have made a bodge wire to 2.5v, and can program the EPCS4 chip, with the : output.jig file.

author: tom66
author_rank: Super Contributor
timestamp: July 25, 2025, 08:13:21 am
content: This is a common issue with JTAG connectors - some programmers generate a default Vtarget of 3V3 if no voltage is supplied, others do nothing. I think it might come from the old 6 pin JTAG connectors which supply TDO, TDI, TRST, TCK, TMS and GND - no target voltage.
Workbench Fail  - Page 1
Forum section: electronics / general

author: JustMeHere
author_rank: Frequent Contributor
timestamp: July 23, 2025, 01:12:16 am
content: Hard to tell but the back of this table is about 3 feet lower than it should be.....

author: Ian.M
author_rank: Super Contributor
timestamp: July 23, 2025, 01:23:33 am
content: That appears to be a folding dining room table and not a particularly substantial one at that. At least it didn't totally collapse and dump all your s--t on the floor!Its less important than it used to be now CRT TVs have gone the way of the Dodo, but the rule of thumb for building electronics workbenches was to make them strong enough to stand on to lift equipment on or off high shelves above them. Any regular furniture short of a metal frame desk is unlikely to be strong enough.

author: JustMeHere
author_rank: Frequent Contributor
timestamp: July 23, 2025, 01:32:28 am
content: It is a dining room table. It held up for 10 years. The glue on the legs wore out. The table is damn near 100 years old.

author: coppercone2
author_rank: Super Contributor
timestamp: July 23, 2025, 01:51:32 am
content: and they called me crazy for bolting table to the wall.also, glue. the closest I will get to glue for structural reasons is braze

author: Analog Kid
author_rank: Super Contributor
timestamp: July 23, 2025, 01:59:12 am
content: How could you even work on such a slanted surface?Sheesh; at least put a couple of cinder blocks back there or somethin'.

author: JustMeHere
author_rank: Frequent Contributor
timestamp: July 23, 2025, 02:00:12 am
content: Im putting a hydrolic jack under it when I repair it. On the heavy side.To the other comment: the table is made from cherry. It should be damn strong. The pegs in the legs might be new.

author: JustMeHere
author_rank: Frequent Contributor
timestamp: July 23, 2025, 02:01:14 am
content: Quote from: Analog Kid on July 23, 2025, 01:59:12 amIt was level about 3 minutes before I took this photo.

author: Analog Kid
author_rank: Super Contributor
timestamp: July 23, 2025, 02:47:55 am
content: So how exactly did the table collapse? That's kind of an unusual event.

author: JustMeHere
author_rank: Frequent Contributor
timestamp: July 23, 2025, 03:43:56 am
content: Quote from: Analog Kid on July 23, 2025, 02:47:55 amJust finished repairing a laptop. Put my hand on the table enough to unplug the power supply and creeeeeek.I think the main issue is I had and unbalanced load on there for years.But the prime factor was just time.

author: Analog Kid
author_rank: Super Contributor
timestamp: July 23, 2025, 04:33:27 am
content: But I mean, what happened? How did it fail? Did the rear legs separate from the table? Did something break?I've never seen any piece of furniture collapse like that, and I've had some pretty funky pieces in my house over the years.
How to tell what option Crydom SSR has? - Page 1
Forum section: electronics / general

author: jrmymllr
author_rank: Regular Contributor
timestamp: July 21, 2025, 07:39:45 pm
content: I have a Crydom D1225 I got from somewhere. There's specific options it may or may not have according to the datasheet like zero cross detection and a snubber, but I cannot understand how this is determined. The datasheet (https://www.sensata.com/sites/default/files/a/sensata-series-1-120-ac-panel-mount-ssr-datasheet.pdf) give ordering options and markings on my device start to make sense, then don't.It has printed on the side:D12JL28The D12 might tell me the control and operating voltage, but then the remaining letters/numbers do not make sense. Anyone know? The only other interesting markings is 9821 which is probably the datecode, and M332 which I have no idea.

author: Stray Electron
author_rank: Super Contributor
timestamp: July 21, 2025, 08:07:09 pm
content: I can't make heads or tails out of it either but I would start by looking for an older data sheet. Your part was made in 1998 and that data sheet is dated 2021 and the parts option codes may have changed. Other than that, try to contact that manufacturer or a large retailer and ask them. I grab these SSRs every time that I find them in surplus equipment and I've used used ones a number of times in some of my applications around the house and other than checking the control voltage and type, I don't worry about the specs and they've always worked for me so the specs don't seem to be very critical.

author: jrmymllr
author_rank: Regular Contributor
timestamp: July 21, 2025, 08:36:45 pm
content: Quote from: Stray Electron on July 21, 2025, 08:07:09 pmThe only reason I was wondering is because I want to use it to drive a refrigeration compressor, i.e. an inductive load. But it's also really tiny, 60W once running, so maybe this SSR would be perfectly reliable in any case.

author: thm_w
author_rank: Super Contributor
timestamp: July 21, 2025, 09:06:25 pm
content: If it just says "D1225" then that means:D = 3-32V DC12 = 24-140 VAC25 = 25A ACblank after = 0V turn onYou can see one with more options here:https://www.amazon.com/CRYDOM-D1225-10-PANEL-MOUNT-240VAC/dp/B005T9KOM6

author: jrmymllr
author_rank: Regular Contributor
timestamp: July 21, 2025, 10:49:32 pm
content: Quote from: thm_w on July 21, 2025, 09:06:25 pmWell you are correct! I was overthinking this. That makes sense. I was thinking the D1225 was some generic series
Friday! Strange things on Digikey challenge - Page 1
Forum section: electronics / general

author: vivi-d
author_rank: Regular Contributor
timestamp: July 25, 2025, 12:37:21 pm
content: Thought it might be interesting to have a contest for the strangest items on Digikey. Let's just say the picture for HG2520 took me by surprise.

author: MK14
author_rank: Super Contributor
timestamp: July 25, 2025, 01:56:33 pm
content: These ones, presumably if you need to dance at the same time:https://www.digikey.be/en/products/detail/scs/TG1M/1621644Finger weird stuff:https://www.digikey.co.uk/en/product-highlight/a/acl-staticide/finger-cots<joke image deleted>

author: MK14
author_rank: Super Contributor
timestamp: July 25, 2025, 02:31:38 pm
content: Digikey, are VERY efficient. They have expertly removed (what I assume is/was) all programmer test items from their databases, so nobody can find them.On the other hand, what exactly is a "NUSIGMARTUEMPTYQT"?https://www.digikey.com/en/products/detail/austin-hardware/NU-SIGMA-RTU-EMPTY-QT/24639107?s=N4IgTCBcDaIKIFsAOAXAniAugXyA

author: tom66
author_rank: Super Contributor
timestamp: July 25, 2025, 03:24:36 pm
content: Quote from: MK14 on July 25, 2025, 02:31:38 pmBottle of ready to use qubits to refill your quantum computer's bit reservoir. Guaranteed to contain at least 100 qubits per millilitre and minimal cat hair.

author: tom66
author_rank: Super Contributor
timestamp: July 25, 2025, 04:31:28 pm
content: https://www.digikey.com/en/products/detail/honeywell-sensing-and-productivity-solutions/EN-17000/25327053What is this? A pre-made standard?https://www.digikey.com/en/products/detail/schneider-electric/BESS2005001720A/26839869Quite expensive. A 1.72MWh battery. Only 5 week lead time though, which is impressive for something almost certainly built to order.

author: Simmed
author_rank: Frequent Contributor
timestamp: July 25, 2025, 05:09:30 pm
content: Quote from: MK14 on July 25, 2025, 02:31:38 pmhaha wad da fug is tis shiet

author: MK14
author_rank: Super Contributor
timestamp: July 25, 2025, 08:23:07 pm
content: https://www.digikey.com/en/products/detail/hoffman-enclosures-inc/NHZ360646G500/26222305So, Digikey, do sell some cool stuff!

author: SteveThackery
author_rank: Super Contributor
timestamp: July 25, 2025, 09:51:54 pm
content: Quote from: MK14 on July 25, 2025, 01:56:33 pmYeah, like small condoms for your finger tips. I use a lot: every time I work on a watch I usually wear three on each hand. Keeps finger grease and acid sweat away from the item you are working onIf anyone fancies trying them, the latex ones give the best grip, but the nitrile ones are antistatic and more resistant to solvents.

author: Grandchuck
author_rank: Super Contributor
timestamp: July 29, 2025, 06:45:17 pm
content: Auto lighter with compass:https://www.digikey.com/en/products/detail/mpd-memory-protection-devices/ZA6003/2439638So sad that it is obsolete

author: Analog Kid
author_rank: Super Contributor
timestamp: July 29, 2025, 10:15:48 pm
content: Quote from: Grandchuck on July 29, 2025, 06:45:17 pmYep.L@@K! Vintage!on eBay.
trying to id a chip on a old battery pack for apple 280 duo  - Page 1
Forum section: electronics / general

author: BINGBON
author_rank: Newbie
timestamp: July 21, 2025, 05:01:33 am
content: The pack is after market and is for a bms for a nimh pack the chip has this etched on it zilog 1195 abs 100 9350 jy. I think it is a chip for the 1 wire bypass. I tried to look up data sheets for zilog sheets but couldn't find this one.

author: Gyro
author_rank: Super Contributor
timestamp: July 21, 2025, 06:20:27 pm
content: Welcome.As there is an 8MHz crystal on the board, I would say it is a mask programmed microcontroller, proprietary to Apple.
where to buy copper bearing lead solder - Page 1
Forum section: electronics / general

author: coppercone2
author_rank: Super Contributor
timestamp: July 20, 2025, 11:56:30 am
content: For screwing around with electroplating (and electroless plating) and very thin wire or films, I wanted a copper bearing lead solder.I found thishttps://www.distrelec.nl/en/solder-wire-2mm-sn60-pb38-cu2-500g-stannol-hs10-535266/p/18248986But its 1.2mm and that is gigantic for soldering tiny things.Does anyone know where I can get this in maybe.. 0.7mm?

author: Roehrenonkel
author_rank: Frequent Contributor
timestamp: July 20, 2025, 12:46:28 pm
content: Hi,Elongate/stretch it?
Single core CPU emulator for old games ? - Page 1
Forum section: electronics / general

author: MathWizard
author_rank: Super Contributor
timestamp: July 14, 2025, 10:20:07 pm
content: Gaming consoles like N64, PS2, Xbox (I assume) have been emulated in software, and run on modern multi-core systems.There are lots of older games from the single core CPU era, say the early 2000's, that don't work on multi-core CPU's for some reason. Does anyone know when we might see single CPU emulators, or something to make these old games and programs work ??

author: tom66
author_rank: Super Contributor
timestamp: July 14, 2025, 10:30:17 pm
content: You don't need an emulator, assuming you're talking about just running x86 programs on an x86 system. Simply set the core affinity of the process. Then the process will only be able to use one, or however many cores you select.On a modern Intel system with asymmetric core design I'd advise setting the affinity of processes to only the 'P' cores and never the 'E' cores.For Windows:https://poweradm.com/set-cpu-affinity-powershell/For Linux:https://www.baeldung.com/linux/process-set-processor-affinity

author: Nominal Animal
author_rank: Super Contributor
timestamp: July 14, 2025, 10:38:03 pm
content: QEMU?bochs?DOSBox?dosemu?86box? See the Wikipedialist of computer system emulatorsfor others; they do exist.

author: MathWizard
author_rank: Super Contributor
timestamp: July 15, 2025, 03:54:46 am
content: Hmm so maybe it was just certain games from that era, that didn't work well on multi-core systems. I was thinking of a Scarface game, and in fact it seems people have patched it over the years. Reading about it the other day, I thought it was still impossible.

author: u666sa
author_rank: Frequent Contributor
timestamp: July 19, 2025, 09:11:10 am
content: CPU usually is not a problem. Video card is a problem.
Meta Is Building Massive Gigawatt Data Centers as It Pours Billions Into AI - Page 1
Forum section: electronics / general

author: Karel
author_rank: Super Contributor
timestamp: July 15, 2025, 06:29:34 am
content: "Just one of these covers a significant part of the footprint of Manhattan,” Mark Zuckerberg said.https://gizmodo.com/meta-is-building-massive-gigawatt-data-centers-as-it-pours-billions-into-ai-2000628918

author: iMo
author_rank: Super Contributor
timestamp: July 15, 2025, 07:01:54 am
content: .. a compelling example of how fundamental physical phenomenon - the "fusion of hydrogen atoms" - become "information"..

author: Simmed
author_rank: Frequent Contributor
timestamp: July 15, 2025, 07:01:58 am
content: Quotegood business for UPS vendors

author: SiliconWizard
author_rank: Super Contributor
timestamp: July 15, 2025, 01:17:18 pm
content: Interestingly, this unreasonable use of energy doesn't seem to raise any concern, so that probably means it's all safe and clean.

author: nctnico
author_rank: Super Contributor
timestamp: July 15, 2025, 01:24:30 pm
content: Quote from: SiliconWizard on July 15, 2025, 01:17:18 pmBitcoin?

author: paulca
author_rank: Super Contributor
timestamp: July 16, 2025, 05:18:02 pm
content: Quote from: nctnico on July 15, 2025, 01:24:30 pmWell if the proof of work was building vector databases for AI models.... might cancel out?

author: tom66
author_rank: Super Contributor
timestamp: July 16, 2025, 10:25:08 pm
content: Oh, I'm sure this race to scale AI won't mean that electricity consumption goes through the roof far quicker than renewable energy can come online to support it, but whatever, it's a problem for "Future Us" and well, screw them, what have they done for us now?

author: Stray Electron
author_rank: Super Contributor
timestamp: July 16, 2025, 11:36:21 pm
content: If this is the one that they're talking about building in Pennsylvania then they announced about two months ago that they're going to restart one of the nuclear reactors at Three Mile Island and use that to power the data center. The reactors there were shut down after the radiation release in the 1970s and have been in mothballs ever since. The video footage in the news article showed the control room at Three Mile Island complete with 1970s vintage analog gauges and manual controls. When asked if the operators planned on updating the control to modern digital electronics with internet control they said no and that they were going to use the original controls and that the system would not be connected to the internet.The news here has also announced that Westinghouse is also planning on building ten new very large nuclear power plants in the US over the next ten years or so.
HP85620A mass memory module - Page 1
Forum section: electronics / general

author: xzswq21
author_rank: Frequent Contributor
timestamp: May 21, 2021, 10:17:44 am
content: Hello, there is a HP 85620A mass memory module on an old HP 8560e spectrum analyzer, how should I place DLP files into the Mass memory module? Where should I find DLP files for measuring the THD, SNR, phase noise or something similar?Thanks

author: TerraHertz
author_rank: Super Contributor
timestamp: May 22, 2021, 02:03:15 pm
content: Did you try googling hp 85620a mass memory module ?https://www.keysight.com/au/en/assets/9018-01154/user-manuals/9018-01154.pdfInstallation, Operation, Programming, and Service GuideAgilent Technologies 85620A Mass Memory Module5620-90041 November 2000Supersedes: October 1996

author: xzswq21
author_rank: Frequent Contributor
timestamp: June 09, 2021, 05:17:11 pm
content: Quote from: TerraHertz on May 22, 2021, 02:03:15 pmThese days all those tools are dead!Does anyone have a HP85620A with bunch of DLP files for measuring the THD and such parameters? I want to buy one

author: JoeyDeng
author_rank: Regular Contributor
timestamp: July 14, 2025, 07:49:45 am
content: Hi xzswq21, did you find the way to install the software options on HP85620A? I also got a HP8563E and I need to use it for phase noise and spurs measurement.I post the situation of my instrument but no one reply
Help needed: Working firmware for STC8H1K17 6-digit Nixie clock (IN-8-2, 74HC595 - Page 1
Forum section: electronics / general

author: Dmytro
author_rank: Newbie
timestamp: July 13, 2025, 08:28:24 am
content: Hello everyone!I am looking for help with a 6-digit Nixie tube clock I purchased from AliExpress recently. The clock uses the following hardware combination:- MCU: STC8H1K17 (TSSOP-20)- 6x IN-8-2 Nixie tubes- 8x 74HC595 shift registers driving the tubes- RTC: R8025- Infrared remote control for setting time and controlling functions- LED backlight controlled by the same remoteUnfortunately, the firmware the clock came with seems defective:- I cannot change the time/date (only seconds can be set)- Other functions (LED backlight on/off, colon blinking, display test) work fine- Replacing the battery did not help- Power-cycling resets everything, but time adjustment still does not workI attempted to read the firmware dump via **stcgal**, but the chip appears to have read protection enabled, so no dump is possible.I am trying to find:- A known working HEX firmware file for this hardware combination- Or any reliable source where this firmware can be purchased or downloadedIf any of you have encountered this type of Nixie clock, or know where to get a good firmware file for STC8H1K17 driving 6 IN-8 tubes with 74HC595 and R8025, I would greatly appreciate your advice or help.I am attaching photos of the board (top and bottom) in this post.Thank you very much for reading, and any pointers or files you can share will be a huge help!Best regards
What´s going on with ALP  Electronix? - Page 1
Forum section: electronics / general

author: dmendesf
author_rank: Frequent Contributor
timestamp: July 11, 2025, 10:29:48 pm
content: I bought sometime ago a few LCDs from ALP Electronix (alpelectronix.com). Their website is still there, I can log in, see my order, see the page products... But all the links for the documents about the products (PDFs, STEP files, etc) era broken. Triel emailing them but the email bounced. Does anybody knows what´s going on? Tried today again (5 days later) and the situation is the same.Daniel
LBT20184 - Page 1
Forum section: electronics / general

author: QueenCrucial
author_rank: Newbie
timestamp: July 09, 2025, 07:36:52 pm
content: Help!!!SOS!!!!Im studying the ARBIN LBT20184 in anticipation of a traingin on this coming monday. Im attempting to input a schedule for chargin my Ni-MH 9.6v 1100mAh battery it has 8 cells. can anyone walk me through the MITS Pro scheduling wizard?

author: tszaboo
author_rank: Super Contributor
timestamp: July 09, 2025, 07:51:27 pm
content: Sure. You have to phase invert the gluon generators and get into a Jeffrey's tube and depolarize the buzzard collectors. Don't forget to list all the TLAs otherwise you might get shocked.

author: QueenCrucial
author_rank: Newbie
timestamp: July 10, 2025, 04:34:38 pm
content: "ohkay"

author: tszaboo
author_rank: Super Contributor
timestamp: July 10, 2025, 05:52:38 pm
content: Quote from: QueenCrucial on July 10, 2025, 04:34:38 pmYou are unintelligible. Maybe try giving some context or pretend we don't know your abbreviations, and explain them.

author: Echo88
author_rank: Frequent Contributor
timestamp: July 10, 2025, 07:13:17 pm
content: https://www.arbin.com/software-solution/mits-for-windows.htmlHardware requirements: hard drive 1TB