hybridfree/eevblog-posts huggingface dataset:
Humidity Meters calibration using 'Salt Bottles' - Page 1
Forum section: electronics / general

author: videobruce
author_rank: Frequent Contributor
timestamp: March 27, 2024, 08:13:44 pm
content: Specifically these items that I'm looking to purchase. I have a few questions about those and any other models, this is not my 1st rodeo with these;https://www.tequipment.net/Triplett/RHT32/Psychrometer/https://www.tequipment.net/Extech/RH300-CAL/Lab-Accessories/I have had issues with a Martel C315 Humidity Meter (I believe the company is out of business now) which is the same as the current Amprobe TH-3 that is over 10 years old now.;https://www.testequipmentdepot.com/amprobe-th-3-relative-humidity-temperature-meter-dual-display-extended-probe-and-capacitive-sensor.htmlI haven't used it much lately due to the following;What happens the unit looses it's calibration using their 'salt bottles' in a matter of months. So anytime I need to use it, it has to be re-calibrated.1. How long are these models (not just this one I'm looking at) hold calibration?2. How long are those 'salt bottles' good for (assuming they are kept closed and in a temperature proper environment. Same goes for the tool itself)?3. How does one know these calibration bottles are still good?4. Does one have to add more filtered water to those bottles after a period of time?I have read, two years was mentioned for the lifespan of those 'Salt Bottles' which seems kinda short (of course depending just how often you calibrated the meter).
The future of AI robots.... - Page 1
Forum section: electronics / general

author: globoy
author_rank: Frequent Contributor
timestamp: March 26, 2024, 06:34:30 am
content: That was interesting, thanks. Definitely a race suddenly with AI+humanoid robots. I guess a lot of nerds trying to make science fiction a reality. The thing I never see discussed is the power source for these machines (or they are tethered). For that reason I'm not too worried yet about Skynet getting a standing army
Looking for info on these Microsystem International Limited chips I acquired - Page 1
Forum section: electronics / general

author: zaphod betamax
author_rank: Newbie
timestamp: March 25, 2024, 11:37:28 pm
content: Although there are various other chips I have identified on this smorgasbord of old 70s chipsI can not get any info on the two sets of chips labelled ML741M and ML747M.It is possible the 747s are dual op amps, and if the 741 is indeed a 741 I have never in my journey came across a 14 pin variant.My awareness on these is open to suggestions.If you can help let me know: what Would really excite me is to find the pinout for these MIL chips so I could breadboard and test them!**These came on this stryrofoam, I did not put them there. If it was up to me I would have them on anti-static foam likethe other CD40xxAs (not pictured) but came on thick antistatic foam.

author: dobsonr741
author_rank: Frequent Contributor
timestamp: March 26, 2024, 01:56:59 am
content: Here is the 741 Pinot in DIP14:https://www.electroschematics.com/wp-content/uploads/2009/10/741-14-pin-configuration.jpg

author: sarahMCML
author_rank: Regular Contributor
timestamp: March 26, 2024, 01:59:02 am
content: If you look up some of the older TI datasheets you'll find both the 14 pin 741 and its dual, the 747 pinouts and specifications. I have a few of those gold ones myself, and some TO cased 741's.

author: zaphod betamax
author_rank: Newbie
timestamp: March 26, 2024, 02:18:49 am
content: Thanks for all the help!
YT video on Safety in Tall buildings and  Li-PO Fires - Page 1
Forum section: electronics / general

author: JimboJack
author_rank: Regular Contributor
timestamp: March 25, 2024, 09:57:09 pm
content: Hi allSafety video from UK and fire preventions, different outcomes of Li-PO Fires, i didn't know that 50% charged battery is just as bad , with LiFePO4 should be mandatary if EV floats yua boat, There is are very short clip of EV car detonation , in the footage some interesting thoughtsJames

author: thm_w
author_rank: Super Contributor
timestamp: March 25, 2024, 10:14:19 pm
content: I didn't watch the entire thing but at what point did he say 50% state of charge is just as bad as 100%? 100% charged will have more energy to release, more likely to enter thermal runaway, and more likely to result in a hotter more violent explosion. Of course 50% charged cell can still blow but, AFAIK many of the burn events occur at near full charge state (outside of physical damage).Another lecture if you want to watch:Though I don't agree with all of his points.

author: JimboJack
author_rank: Regular Contributor
timestamp: March 25, 2024, 10:25:00 pm
content: 50% charge it doesn't not go up in flames it just releases explosive gas's.1. the fireman thrown 20m,2. at the end he also mentioned how an explosion occured that took out a partion wall between two flats in brisbane, that wasn't in the local news.
Ex-cops are selling AI that decides you're lying when you call 911/999 for help - Page 1
Forum section: electronics / general

author: quince
author_rank: Newbie
timestamp: March 25, 2024, 06:06:41 pm
content: Saw this ProPublica story on Reddit. Are you ready for your industry to get invaded by AI-wielding cranks, convinced their dataset is flawless and their brain is a perfect lie detector? OpenAI et cetera have made it way too easy to do this.Cranks, ex-cops, have been raking in the cash selling trainings that teach current cops they can tell whether an emergency number caller is lying about the crime they're reporting. They don't publish their data, they don't talk to reporters, they don't like to be talked about.Now, these degenerate cranks want to get even richer renting out artificial intelligence models to do the same job for them at a massive scale. First text, then audio, then video, then anything.Quote"They Called 911 for Help. Police and Prosecutors Used a New Junk Science to Decide They Were Liars."https://www.propublica.org/article/911-call-analysis-fbi-police-courts"St. Pete startup uses AI to detect lies"https://stpetecatalyst.com/st-pete-startup-uses-ai-to-detect-lies/One of the cranks' websites, bragging about the innocent people they've thrown in jail:https://www.statementanalysis.com/bio/And their startup, complete with AI tld:https://www.deceptio.ai/What's next? Feed the AI your social media profile and get an undesireable ranking?

author: mendip_discovery
author_rank: Super Contributor
timestamp: March 25, 2024, 07:15:20 pm
content: Sorry you lost the moment you called ex police Cranks.If it wasn't ex-police would you still be as angry?Using AI to detect false claims could he helpful but the calls still need a response it just you can inform the people heading to that call that there maybe some deception behind it.Prank calls take up valuable time and can cause big issues at times.Insurance companies here in the UK are already using firms who get paid on finding out if you are making false claims. They use tools to measure stress levels of your voice etc. So it nothing new. It's just got the latest big business bingo word, gone away are the clouds and now we are on to AI.

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 25, 2024, 07:39:04 pm
content: I don't think they need that shit to reject calls from people genuinely needing help.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: March 25, 2024, 09:18:01 pm
content: Quote from: mendip_discovery on March 25, 2024, 07:15:20 pmI'm not sure if you realize how poor the police are over here... note the article is in the US.Not that it's necessarily representative of the "tool" / data set used here, specifically, but past experiments with AI decision tools have shown rampant racism and other biases; turns out, training them on human responses suffering the same biases, simply propagates those biases onward.Tim
think your lab is bad? - Page 1
Forum section: electronics / general

author: coppercone2
author_rank: Super Contributor
timestamp: March 18, 2024, 12:02:42 am
content: https://www.youtube.com/@robertdariofernandez/shortsI think this is hilarious. Well some of the things he makes are kinda good to know, in a MacGyver sort of way. but wow.High voltage soldering iron? Soldering with a transistor?

author: tooki
author_rank: Super Contributor
timestamp: March 18, 2024, 06:40:00 pm
content: That channel makes my brain hurt. It’s a low-budget “5 Minute Crafts” crap channel, just for soldering with some of the worst technique I’ve ever seen. Every video is tagged with a different Spanish-speaking country. There are gratuitous disco lights in almost every video. WTF?

author: coppercone2
author_rank: Super Contributor
timestamp: March 18, 2024, 06:58:15 pm
content: I just blame the economybut using a shorted diode or whatever that is to solder is brilliant. Resistors in those packages are rated 300F often. So that one is actually valid without absolute maximum overload of greater then 50%Take apart a larger broken power supply and the fried diodes and mosfets might be good SMT soldering tools, for a few uses.I figure that diode starts diffusing or whatever and turns into a silicon resistor. SO long the bond to the heat sink holds it should be good.

author: tooki
author_rank: Super Contributor
timestamp: March 18, 2024, 10:40:37 pm
content: Yeah, no, nothing there screams “brilliant” to me. “Creative” yes. But brilliant? No.

author: Geoff-AU
author_rank: Frequent Contributor
timestamp: March 19, 2024, 11:02:35 am
content: Electroboom-ish entertainment. I'd never be that desperate to need to solder something.

author: Omega Glory
author_rank: Regular Contributor
timestamp: March 23, 2024, 04:40:23 pm
content: I believe Jeri Ellsworth has a story about how when she was a kid, her father wouldn't allow her to get a soldering iron, because he thought it too dangerous. Ironically, this drove her to create one out of a wirewound resistor plugged into mains.

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 23, 2024, 08:54:04 pm
content: Oh well, when I was a kid I was doing water electrolysis with a pair of electrodes directly connected to mains (and it's 220V over here.)That was fun.

author: wraper
author_rank: Unknown
timestamp: March 23, 2024, 09:05:48 pm
content: Desoldering is surprisingly OK

author: Bud
author_rank: Super Contributor
timestamp: March 23, 2024, 10:16:15 pm
content: I thought even in poorest of countries it is not a problem to find a basic soldering iron.

author: tooki
author_rank: Super Contributor
timestamp: March 24, 2024, 11:39:15 am
content: Quote from: wraper on March 23, 2024, 09:05:48 pmThere’s nothing wrong with desoldering by using a blob of solder and a huge tip. There’s just nothing special about it, either.

author: wraper
author_rank: Unknown
timestamp: March 24, 2024, 11:54:10 am
content: Quote from: tooki on March 24, 2024, 11:39:15 amIts special in a context of him doing a reasonable thing among heaps of stupid nonsense.
Looking for a modern carbon fiber cutting service, like JLCPCB - where? - Page 1
Forum section: electronics / general

author: Odd
author_rank: Regular Contributor
timestamp: March 22, 2024, 08:35:18 am
content: I need some custom CF parts cut.Looking for a service that:- is not closed during the Easter holiday. (Asian countries is good)- can ship with DHL- can upload file, choose material, enter amount and see price instantly, (like JLCPCB)- can display some guesstimate on when the job is done.- I want to avoid the usual "send us file, send us your contact info, get some quote, ask for shipping options and time and negotiate it over a few days.

author: Fauks
author_rank: Newbie
timestamp: March 22, 2024, 05:38:57 pm
content: I have a small side business designing and selling FPV drone frames. I have done my fair share of shopping around.Look into Firsttekco, they have quality T300/T700 boards of thickness from 1mm to 10mm. A small 100mmx25mm part in 5mm thickness is like $3.50. No MOQ which is nice as well. They ship DHL and are located in China.

author: Fauks
author_rank: Newbie
timestamp: March 24, 2024, 11:51:25 am
content: After re-reading your post, it seems you are looking for a place that you can upload DXF(s) and get instant quotes similar to JLCPCB. There are a few places I know of that offer this kind of service but they are super expensive.https://sendcutsend.com/]https://sendcutsend.com/ Does quality work but is very expensive. You can upload and get instant quotes and select many different substrates. Aluminum, steel, CF, polymers etc.https://cncmadness.com/Is located in Canada. They do quality work but are a little more pricey and slightly less cut quality than Firsttekco but shipping turn around is a little faster and cheaper for one off type of projects.https://www.firstekco.com/Feedback/Here is the contact for Firsttekco, ask for Alex Lui if you decide to check them out.
Ebay unsafe/noncompliant goods and reporting - Page 1
Forum section: electronics / general

author: MrMobodies
author_rank: Super Contributor
timestamp: March 24, 2024, 05:28:54 am
content: I was looking at a dodgy power supply brand out of interest where one blew up somewhere a couple of days ago that I replaced with a decent brand and I found one on Ebay with a non compliant fuse-less plug in the listing.I reported it and despite explaining about the non-complaint plug I got this reply:QuoteWell that's not very good. They now have a text box so I could explain why I reported it and a followup but it didn't seem very helpful. Maybe that agent is from another country and don't understand how it is not compliant in the UK.
Fookin scribd - Page 1
Forum section: electronics / general

author: temperance
author_rank: Super Contributor
timestamp: March 23, 2024, 05:02:06 pm
content: Dear members,how about this:https://www.scribd.com/document/423355865/EEVblog-Electronics-Community-ForumScribd and similar websites are really becoming a plague. They host content which is either in the public domain or owned by a company like TI, Analog devices,... All their publications are all freely available. Reporting them is impossible unless you sign up which costs you $10.99.Reporting them would take a lot of time. Almost every data sheet or app note can be found on scribd...Of course I can add -site:scribd.com when searching for something. But being lazy, is there some way to automate this by appending for example -site:scribd.com -site:ehow.com -site:...

author: jpanhalt
author_rank: Super Contributor
timestamp: March 23, 2024, 05:06:25 pm
content: Enforcing copyright is the owner's responsibility. In other words, you don't have "standing" to complain about it in any judicial court. The court of public opinion is your only option. I agree with you, though. I also hate those sites that require cookies just to see the first page.

author: Ian.M
author_rank: Super Contributor
timestamp: March 23, 2024, 05:15:35 pm
content: Even Dave and the posters in the thread in question don't have standing to serve Scribd a takedown notice as our forum rules here state:Quotehttps://www.eevblog.com/forum/chat/forum-rules-please-read/

author: shapirus
author_rank: Super Contributor
timestamp: March 23, 2024, 05:15:38 pm
content: Quote from: temperance on March 23, 2024, 05:02:06 pmHere you go:https://addons.mozilla.org/en-US/firefox/addon/ublacklist/

author: temperance
author_rank: Super Contributor
timestamp: March 23, 2024, 05:21:22 pm
content: QuoteI understand that. The problem is that websites like scribd are in the top search results for documents which are freely available and I would like to exclude those from my search results without typing a list of websites to exclude all the time.As such I searched with google if something related has been posted on EEVblog. Interestingly the First search results is a link to scribd with someone publishing EEVblog messages... Some people seem to have nothing else to do.@ shapirusSharp response, exactly what I was looking for.

author: tooki
author_rank: Super Contributor
timestamp: March 23, 2024, 07:46:04 pm
content: And Pinterest, too. I hate how it pollutes image searches, and how clicking a Pinterest link then doesn’t even contain the (often relevant) image it had a thumbnail for!

author: tooki
author_rank: Super Contributor
timestamp: March 23, 2024, 07:48:18 pm
content: Quote from: shapirus on March 23, 2024, 05:15:38 pmEven better, here’s the extension’s own page, since most people don’t use Firefox:https://iorate.github.io/ublacklist/
Calculating FTTFd - Page 1
Forum section: electronics / general

author: ALAN13
author_rank: Newbie
timestamp: March 21, 2024, 09:11:05 am
content: So we use the MILHDBK 217F. in this standard is a calculation that taking into account the wattage of the component divided by the wattage used across that component.Now this standard is really obsolete and some people use the FIT values given by manufacturers . The problem with this is that it doesn't take into account how hard you drive that component I.E the wattage over the wattage used
The Magnetron: What an Engineer Means by “Best” - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: May 26, 2023, 08:18:37 pm
content: The Magnetron, from the design for WWII radar to the Microwave Oven.Enjoy:

author: BrianHG
author_rank: Super Contributor
timestamp: March 24, 2024, 09:13:14 pm
content: A complete description and visual simulation the path of the cloud of electrons within a Magnetron...
Air Fryer Repairman - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: March 15, 2024, 11:00:24 pm
content: Too funny not to share!https://twitter.com/Pfizer_Dept01/status/1768540304750043192

author: floobydust
author_rank: Super Contributor
timestamp: March 15, 2024, 11:06:13 pm
content: That is hilarious, call the air fryer repair man lol. I'll bet wearing a uniform helps the repair job.The UK press has been pushing articvles on air fryers for some time now.Today, we just had a massive recall for Best Buy ones.Best Buy Recalls Insignia® Air Fryers and Air Fryer Ovens Due to Fire, Burn and Laceration Hazards

author: VK3DRB
author_rank: Super Contributor
timestamp: March 16, 2024, 01:12:30 am
content: A Wine Cooler Repairman dropped in next door. After charging $300 to knock on his door, the repairman wanted to charge my neighbour $1200 for a replacement PCB that had only about 10 simple parts on it, plus another $300 to return with the board and plug it in. Horrified, my neighbour dropped around here with the defective board. A garden variety 7812 voltage regulator in a TO-200 case was defective. Took only a few minutes to prove it was faulty. I had one in my junk box, and replaced it for him. No charge. I wonder if the Wine Cooler Repairman also does Air Fryers.

author: Xena E
author_rank: Frequent Contributor
timestamp: March 16, 2024, 03:53:53 pm
content: From the publication that first brought you news that a London Transport Leyland routemaster double decker bus was found on Mars.Seriously though, no one can help their looks but that guy isn't even going to get the tide to take him out with that haircut.

author: tom66
author_rank: Super Contributor
timestamp: March 16, 2024, 05:02:58 pm
content: The Sunday/Daily Sport is mostly a parody newspaper - though it doesn't officially admit it I'd consider it a bit like a more right-wing/working man'sOnionfor the UK. I don't think it's in print any more.

author: EEVblog
author_rank: Unknown
timestamp: March 18, 2024, 05:35:19 am
content: Quote from: tom66 on March 16, 2024, 05:02:58 pmI refuse to believe it's not true.
Anyone recommend an isolated package TO-126 NPN? - Page 1
Forum section: electronics / general

author: Pete_UK
author_rank: Contributor
timestamp: March 16, 2024, 11:54:39 am
content: Hi all,Does anybody know of a TO-126 packaged NPN which has an isolated package, ie does not have the exposed metal flat on the rear connected to the collector, or instead does not have the exposed metal flat & is all-plastic? I need such a part to use as a diode-connected thermal sensor - am currently using a BD135, but this is a pain in my application as metal flat is connected to the collector, hence I need an insulating washer etc,.Alternatively, are there any diode temperature sensors out there which feature an M3 mounting hole, and are fully insulated?Very many thanks for any help!

author: Ian.M
author_rank: Super Contributor
timestamp: March 16, 2024, 12:06:30 pm
content: I *think* you are looking for a TO-126N package. Mouser have some Toshiba ones that may be suitable.https://mou.sr/4ctTlaW

author: NiHaoMike
author_rank: Super Contributor
timestamp: March 16, 2024, 01:30:16 pm
content: Have you considered a bracket to hold a TO92 transistor against the heatsink?

author: Zoli
author_rank: Frequent Contributor
timestamp: March 16, 2024, 02:47:57 pm
content: BD13516(and the whole family) is full epoxy body.

author: Pete_UK
author_rank: Contributor
timestamp: March 17, 2024, 07:07:51 pm
content: Thanks very much for the suggestions guys, very helpful!
PC-Powersupply-can the voltage readings of the rails give information about... - Page 1
Forum section: electronics / general

author: Leland_Gaunt
author_rank: Contributor
timestamp: March 17, 2024, 02:16:30 am
content: ..the state (of decay/life expectancy)?Hello gentlemen.I just discovered on HWINFO (a software for reading out all kinds of temps and sensors on you GPU and mainboard) that it shows the voltage thats currently on your 12V, 5V and 3,3V rails.I was wondering if these numbers can give you any information or warning that your PSU might be going downhill. Maybe putting some stress on the system and wathcing the 12V rails?They are read out by a nuvoton chip on the mainboard. I would guess they are reasonable accurate.But i have no idea, maybe this idea is total nonsense and all PSUs spit out stable 12V-values until someday the PC wont turn on anymore.My system is somewhat modern, except the PSu which is 10 years old. Its decent quality and never really gets rocked by the system, it doesnt even reach 40% load und the mostdemanding usecases.I suppose if these readings are of any actual use and benefit, i would have heard probably, but i had to ask anyway, it would be so cool if they help in some way.greetings fro Germany(not my fault)

author: Kim Christensen
author_rank: Super Contributor
timestamp: March 17, 2024, 05:15:13 am
content: Quote from: Leland_Gaunt on March 17, 2024, 02:16:30 amI think that this would be the case most of the time. More useful info would be fan speeds and CPU/GPU temperature. Those would be more likely to show degradation before failure or sub optimal airflow.

author: EPAIII
author_rank: Super Contributor
timestamp: March 17, 2024, 08:43:56 am
content: Or install sail switches by the fans.

author: tom66
author_rank: Super Contributor
timestamp: March 17, 2024, 05:08:47 pm
content: Probably not, the main types of failures of a power supply would be semiconductors (main transistors) and the electrolytic output capacitors. The latter might cause a decrease in output voltage, but it can't be guaranteed that would be detectable by a single ADC channel before it begins to cause faults.
Your best piece of Electronics Engineering equipment - Page 1
Forum section: electronics / general

author: Faringdon
author_rank: Super Contributor
timestamp: March 16, 2024, 04:47:59 pm
content: Hi,As you know, no matter what scope/DMM/Spectrum analyser/simulator you use, its your brain that is your best piece of kit.And if you dont sleep well, then its well known that the brain doesnt function well.EE's can often spend long periods desk-sitting and simultaneously eating non fibre based foods , and too much sugar.As well as eating just before bed, which upsets sleep when you have heavy food in the bowel when kipping.And all This can cause Diabetes type 2 and "Dead gut syndrome"....both of which cause insomnia and poor sleep.So the attached shows you how to deal with this.I know many young players will think this doesnt apply to them, but its amazing how quickly this can creep up on you.Edit by gnif: attachments removed, stop posting this, this is not a medical forum.

author: tszaboo
author_rank: Super Contributor
timestamp: March 16, 2024, 04:58:11 pm
content: OK. Did you need to create a new thread?

author: Faringdon
author_rank: Super Contributor
timestamp: March 16, 2024, 05:13:19 pm
content: I think the other one was deleted....confessedly, its title was a bit grim.

author: coppercone2
author_rank: Super Contributor
timestamp: March 16, 2024, 05:24:11 pm
content: that's far out man

author: gnif
author_rank: Unknown
timestamp: March 16, 2024, 05:49:23 pm
content: Quote from: Faringdon on March 16, 2024, 05:13:19 pmTake a hint @FaringdonLocked
French Court Issues Damages Award for Violation of GPL - Page 1
Forum section: electronics / general

author: Karel
author_rank: Super Contributor
timestamp: March 15, 2024, 08:31:06 am
content: On February 14, 2024, the Court of Appeal of Paris issued an order stating that Orange, a major French telecom provider,had infringed the copyight of Entr’Ouvert’s Lasso software and violated the GPL, ordering Orange to pay €500,000 incompensatory damages and €150,000 for moral damages.https://heathermeeker.com/2024/02/17/french-court-issues-damages-award-for-violation-of-gpl/amp/

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 15, 2024, 08:54:20 am
content: Don't get too excited, in a not-too-distant future, companies will turn to "AI-generated" software only, which will have no licensing attached even if it's just a patchwork of open-source software.

author: Ranayna
author_rank: Super Contributor
timestamp: March 15, 2024, 09:47:25 am
content: Wouldn't surprise me if french legislation goes after such AI generated crap as well.Just yesterday i heard that France is looking to establish restrictions against "fast" and "Ultra-Fast" "fashion" companies, that are producing tons over tons of cheap once wearable trash.

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 15, 2024, 07:57:39 pm
content: Yeah, don't get too excited about that.
Drone data gathering. - Page 1
Forum section: electronics / general

author: paulca
author_rank: Super Contributor
timestamp: March 15, 2024, 12:52:52 pm
content: I don't honestly know why I didn't see this, specifically, coming. However it is now a developing industry apparently.There was an incident locally with a drone spending hours lottering around the area early am and late pm. At night. A big drone, fully lit with navs and strobes. Most likely operating "above board" given the hours of operation being outside of the local airports hours of operation and it was operating within "the zone" so to speak.Several people in comments reported that it was a marketing drone which was trying to identify how many "scooters / mopeds" where operating in the area. Alegedly this was to support market research which was aiming to push electric scooters to under 21s in the area. They wanted to know how big the market was in this specific area.I cannot confirm this was the purposes of the drone operating. The local police also have drones and there were several large drug raids concurrent with the dates and times.However. I did google a bit to see how realistic this is/was. Turns out it is quite realistic. I found a dozen different "Drone-vertising" service providers who are willing to do "data gathering missions" for marketing. That includes both photo tracking with AI to identify "things" but also scanning "Network neighbourhoods", "Cataloguing and categorising connected devices". So they overfly a city or area and come back with a map of all the devices that responded to the drones beacons, pings or whatever.Technological aspects are fascinating. I don't think they have ever touched on the potential of that approach towards 24/7 market surveillance.The privacy, security and legal aspects make my eyes water.... and my blood boil.

author: mendip_discovery
author_rank: Super Contributor
timestamp: March 15, 2024, 01:28:28 pm
content: The tin foil hat army are going to love this.I know the power companies are looking at them to monitor powerlines etc.I would like to see some sort of identity like aircraft have to use so you can know who owns/operates that unit. I am shocked not more have been used for scouting out locations for crimes.

author: paulca
author_rank: Super Contributor
timestamp: March 15, 2024, 01:34:02 pm
content: Quote from: mendip_discovery on March 15, 2024, 01:28:28 pmAll it takes is someone to invent a way to read brainwaves for 100m and ... they may turn out right in the need for a tinfoil hat!EDIT: Of course we know that a tinfoil "hat" would not be enough. In fact a tinfoil hat might make it easier! A Faraday hat would be a lot more awkward.
Suddenly no format for firefox on this site? - Page 1
Forum section: electronics / general

author: PwrElectronics
author_rank: Regular Contributor
timestamp: March 13, 2024, 08:52:10 pm
content: The other day, suddenly, when using firefox to look at this site, all formatting is now gone and I am left with what looks like a stripped down text only view.Tried MS edge and it looks normal. I don't see any scripts or ad blockers that could be the cause. Seems like I am running into more sites where firefox does not work well and need to use edge instead. Yes, FF is updated.

author: ataradov
author_rank: Super Contributor
timestamp: March 13, 2024, 08:57:21 pm
content: Works on my end. Clear the cookies if the issue is persistent,I do see a broken formatting (missing CSS, I presume) from time to time, but I think it is a server issue, and it is recovered on refresh.

author: Bud
author_rank: Super Contributor
timestamp: March 13, 2024, 09:05:21 pm
content: Same here, just clicking the reload button gets everything back.

author: RoGeorge
author_rank: Super Contributor
timestamp: March 13, 2024, 09:10:45 pm
content: The almost text only is probably the theme for mobile phones. In very rare occasions, the forum suddenly switches to the mobile theme, though I never visit from mobile. Don't know why it happens, but it is so rare I didn't reported it. There is a button/link somewhere in the mobile theme, to switch back to the desktop view.

author: PwrElectronics
author_rank: Regular Contributor
timestamp: March 13, 2024, 09:29:50 pm
content: QuoteThis must have been it. I poked around and found something for "full site" and all is well again. Must have accidentally poked somethingThanks!

author: Ranayna
author_rank: Super Contributor
timestamp: March 14, 2024, 11:54:33 am
content: Quote from: PwrElectronics on March 13, 2024, 09:29:50 pmIn the website footer, hidden among this dark dot pattern, are a couple of links, including one that redirects to the mobile view. The text is only really visible if you select it.

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 14, 2024, 10:33:30 pm
content: Quote from: ataradov on March 13, 2024, 08:57:21 pmYes, happens to me to, very occasionally. Often comes with a very slow page display, so yes, probably a server issue.

author: Nominal Animal
author_rank: Super Contributor
timestamp: March 15, 2024, 02:26:40 am
content: Happens to me too, occasionally.It could be an occasional interaction with CSS and the various dynamic JavaScript snippets used, or just an occasional rendering glitch related to how these pages are XHTML and not HTML5, or with Firefox NoScript/uBlock Origin plugins. A reload fixes it.
Fluke 87V displaying "Lead" and sounding beeper when nothing is plugged in - Page 1
Forum section: electronics / general

author: king.oslo
author_rank: Frequent Contributor
timestamp: July 15, 2012, 12:28:19 am
content: Hello there,I've got a Fluke 87V.Today, when I came to switch it on, it began sounding an alarm and display "lead" when I switched it on, despite nothing being plugged into the jacks.When it turn it to mA or uA, it shuts up.Is this a common problem? What should I check?Thank you for your time.Kind regards,Marius

author: NiHaoMike
author_rank: Super Contributor
timestamp: July 15, 2012, 12:35:57 am
content: Use compressed air to blow out any dust.

author: king.oslo
author_rank: Frequent Contributor
timestamp: July 15, 2012, 12:41:39 am
content: That worked.Is there optical sensing of the input jack?Kind regards,Marius

author: NiHaoMike
author_rank: Super Contributor
timestamp: July 15, 2012, 12:47:43 am
content: If you take a look at the teardown of the 28 II, yes, it's optical.

author: king.oslo
author_rank: Frequent Contributor
timestamp: July 15, 2012, 12:50:43 am
content: Thanks!Kind regards,Marius

author: Unknown
author_rank: Unknown
timestamp: July 15, 2012, 02:17:23 am
content: The 28-II may be optical because it's easier to seal, but many other meters (which I believe includes the 87V) measure resistance between two halves of the banana jack. I would clean the jacks with either compressed air or a Q-tip with isopropanol.

author: Louis_C
author_rank: Contributor
timestamp: March 14, 2024, 04:20:24 pm
content: There is also one other thing to look at when you have a unit with this issue. After taking the unit apart have the board face you like normal. To the right and just above the (+) input terminal is a white ceramic resistor network. Make sure you have NO cold solder joints on the resistor pins or on the board. THAT will fix your issue. Good luck! Lou.
Question for UK members - Buying from TME (or Europe) post brexit. - Page 1
Forum section: electronics / general

author: monkey_magic
author_rank: Contributor
timestamp: November 26, 2022, 03:27:50 pm
content: I know there are a few UK members on here that may have encountered this already.I realise I'm a bit late to the party but just logged in to my TME account to make a purchase and found out that post brexit they now only sell to UK businesses rather than individuals.Seems some other suppliers state they no longer ship to the U.K at all.TME suggested I fill in a form to register as a business, not quite sure on that logic - but I'm wondering what the process is now like for buying items from Europe and what extra charges I'm going to be lumbered with?The order was well under £135, so hopefully dodging the customs charge - but it would be good to know what the real world experience is now like, as to whether it is even worth bothering with the amount of hassle for the odd one-off small order.I do have somebody in Spain that could forward on a purchase to me, but that looks like just as much hassle, and presumably paying the VAT twice at each end.I don't really want to proceed with an order and get hit by an unexpected massive handling fee, so any feedback or suggestions from those who have ordered recently would be gratefully appreciated.

author: Jackster
author_rank: Frequent Contributor
timestamp: November 26, 2022, 03:44:35 pm
content: You just missed out on me ordering something the other day. Could have imported it for you.Not sure what is up with TME around this. I didn't use to be VAT registered and it was no different to how I order now.If they don't charge you VAT at checkout, DHL will ask for it along with a fee of around £10.

author: Giallograle
author_rank: Contributor
timestamp: March 13, 2024, 08:49:22 pm
content: Just about to order from TME for delivery by DHL to the UK.I'm not worried about Duty, but is UK Vat included in their prices, or will I have to pay that on delivery?

author: brucehoult
author_rank: Super Contributor
timestamp: March 13, 2024, 10:00:21 pm
content: Hmm, I've ordered from TME before, from New Zealand, without any problems. They didn't add any taxes, and as the total was far under NZ$1000 I was not charged anything on arrival.I don't know why the UK would be any problem.I'm registered as an individual. It was some time ago (2020) but I just now logged on to my account there and all looks normal, I could view my previous order etc.
Identification of electrolytic capacitor - Page 1
Forum section: electronics / general

author: Aurgelme
author_rank: Contributor
timestamp: March 11, 2024, 12:22:48 pm
content: Hi,What can this capacitor be used for besides what is written on it.Haven't found any data about this online.

author: jfitzgerald
author_rank: Newbie
timestamp: March 13, 2024, 03:48:57 pm
content: This capacitor is likely intended for use as "motor start" or "motor run" use on a single phase AC motor. The limit to air conditioner use is probably due to construction for the assumption of a particular duty cycle, for example less than 5 motor starts per hour.
IGBT Curve traces comparation - Page 1
Forum section: electronics / general

author: rauloliv
author_rank: Contributor
timestamp: March 13, 2024, 12:29:49 pm
content: Hello all,I bought a pair of RJH60T4 IGBT to replace in a induction hob from a local supplier that i use often.The case marking is different on the lettering, polishing...Idecided to use my DCA75 to compare curve traces, what do you thinq of the results? Is this expected tolerances?Thank you
Remote desktop, IE: Rustdesk/TeamViewer & Stupid Windows 7/10 & screen mode AERO - Page 1
Forum section: electronics / general

author: BrianHG
author_rank: Super Contributor
timestamp: March 12, 2024, 06:16:20 pm
content: Believe me, I googled this to death, but I really need help, a real solution...First, my remote desktop isn't running slow. It always works fine.But, when in use, on the serving side, that asshole Windows always bring up this message box:'Your computer is running slow, lowering your graphical settings'Then it turns off 'Aero' ruining my desktop setup with all open applications needing refreshing.Now, let me be clear, my computer wasn't running slow by any means. It was working just as fast as ever.How do I stop Windows from monitoring the speed of my display system and from behind my back, begin screwing with my graphical settings while I work.(I know about the 'ignore and continue using current settings option', but if you miss the message box, 10 seconds later is will screw everything up and you can never fix the problem again without rebooting.)(Please do not how to turn Aero back on without rebooting, I already know how to do that. Windows will just turn it back off a few minutes later...)

author: soldar
author_rank: Super Contributor
timestamp: March 12, 2024, 07:30:16 pm
content: I stopped using Teamviewer years ago. Besides having problems they kept trying to get users to pay and accusing them of proffesional use. I started usingAnydeskand I recommend it. Never had any problems.
Sad news regarding member XMO - Page 1
Forum section: electronics / general

author: sagemonk
author_rank: Newbie
timestamp: March 11, 2024, 09:23:59 pm
content: I am sad to report that forum contributor XMO has passed away after a long battle with some medical conditions. He died peacefully over the weekend and was surrounded by loved ones when he died.In his final years his mobility was quite limited and he used forums like this to keep his mind exercised while his body deteriorated.Sadly he will no longer be posting.I am a very close friend of his and he asked me to notify his friends in the forums when he passed so that it would not appear like he simply disappeared. He wanted you all to know what happened to him.His family and I appreciate the community you all provided him while he was still able to type.I posted here because this looked like one of his more frequently used parts of EEVblog. If there are individuals that need to know I would appreciate you passing this information along.-J

author: thm_w
author_rank: Super Contributor
timestamp: March 11, 2024, 09:39:15 pm
content: Thank you for posting.https://www.eevblog.com/forum/profile/?u=134637
GenRad 1960s sound level meters restoration - Page 1
Forum section: electronics / general

author: jonpaul
author_rank: Super Contributor
timestamp: March 12, 2024, 12:38:00 pm
content: Bonjour a tous:Our Museum has received four General Radio Sound Level meters, 1565-A circa 1960s..1970s.One ceramic mic element is missing. 3 original GenRad leather cases. one 1562-A calibrator. No battery damages!All sort of work. One broken meter face,Adjusting CAL pot. with sound level calibrator all read low 10..20 dbI suspect, aged ceramic mic elementsPerhaps transistors, caps, resistors, pot, switches ?Any ex GenRad, or noise reduction or acoustic experts out there?Any experience or advise is appreciated.Many thanksJon

author: GLouie
author_rank: Regular Contributor
timestamp: March 12, 2024, 06:02:59 pm
content: I am not an expert! Is the calibrator known to be good? If electronic, it could easily be bad by now; if pistonphone, less likely.I see the manual with schematic is on the IET site.
What's this called - Page 1
Forum section: electronics / general

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: March 08, 2024, 04:34:40 am
content: Bought a vintage Commodore monitor. The name badge has faded colors. (And yes, I know it's filthy.) I wanted to see if it's possible to either make new ones or fix the current stickers.The C= commodore text is textured metal I guess, on the computer and drives the badge is metal, I've removed enough of them to know.I think they're just stamped out of aluminum to give the raised texture on those.But the monitor badge is for sure plastic like Lexan because of the transparent power LED window.The letters look the same as on the computer, same raised brushed metal.Could these be actually separate metal letters glued onto plastic?Or something else like a really good stamping process with metallic effect in the plastic?What are the keywords I need to search for? Either to understand the process (curiosity) or find suppliers to make some?

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: March 08, 2024, 02:13:00 pm
content: I kinda doubt it now, I think it's embossed foil. Either way doesn't look like something that's easy to do in qties of 1...

author: Nominal Animal
author_rank: Super Contributor
timestamp: March 08, 2024, 10:43:23 pm
content: Quote from: Alex Eisenhut on March 08, 2024, 02:13:00 pmIf you have a 3D printer to create the necessary embossed features, you can use conductive paint and electrolytically plate them at home. Lots of DIY examples on Youtube.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: March 10, 2024, 10:56:46 pm
content: I was hoping for a lazier solution.. like see-->buy-->apply.That'll teach me to buy CRTs without paying close attention to the pictures. Oh well. A faded 1702 is better than no 1702.

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 11, 2024, 04:09:13 am
content: Just giving the badge a second life looks like a way easier option, given that it is in a relatively good condition judging from the pics.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: March 11, 2024, 05:24:27 pm
content: I guess I'm over-thinking this. I'll finish rinsing the dust out the vents first...
Oh my god! Oh my god! Elon replied! - Page 1
Forum section: electronics / general

author: ebastler
author_rank: Super Contributor
timestamp: March 11, 2024, 05:09:15 pm
content: You have posted and linked to a lot of storms-in-teacups. But this is the most unwatchable video I have come across in a long time. Why do you bother (and why do you bother us) with that kind of trash?

author: Bud
author_rank: Super Contributor
timestamp: March 11, 2024, 05:19:01 pm
content: Video is fine. It is the people in the video who is trash. The video just exposed those bottom of the barrel arrogant assholes. "Elon , bro, send me a new cybertruck, please...". What piece of shit one has to be to shoot at his own vehicle and the beg the manufacturer for a replacement when things turned out not to be good. Use your youtube income from the video to fix it, stupid idiot.
3D Headset PC Monitor as VR from salvaged 6 inch high resolution phone screen - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: March 09, 2024, 07:06:59 am
content: Do it yourself cheap 3D video headset. so will it work?what is involved in getting a 6 inch LCD 1080x1920 phone screen to work as a VGA PC or HDMI video monitor?for a DIY VR or 3D headset for the playback of split screen video dioramas.most LCD video display driver boards are for low 4.3 inch 320X240 low resolution LCD displays orfor 1080x1920 displays that are over 15 inch in size.I have a cheap VR type phone headset (3D VR Glasse) with the two lenses for seeing a phone screen up close at just 80mmso how do you connect a 6 inch 1080x1920 pixel LCD screen salvaged from an old phone to work as a VGA PC or HDMI video monitor?has anyone accomplished this type of modification using an off the shelf LCD video display driver board?or is this all a waste of time?

author: NiHaoMike
author_rank: Super Contributor
timestamp: March 09, 2024, 12:21:29 pm
content: https://www.relativty.com

author: abeyer
author_rank: Frequent Contributor
timestamp: March 09, 2024, 11:15:00 pm
content: Quote from: jonovid on March 09, 2024, 07:06:59 amI suspect you'd be far better off from a practicality/productivity perspective just using an old phone intact. You could reflash it with customized software or just use it as-is with an app installed rather than salvage the screen and then try to build something around that. (though admittedly this potentially makes for a less interesting hardware project)

author: tom66
author_rank: Super Contributor
timestamp: March 10, 2024, 12:02:10 am
content: As most people with VR have discovered, to get truly immersive VR you need something like 2-3K resolution per eye, because the central focal region of the eye has extremely high density. I think you will find it is a bit of a waste of time, thescreen-door effectfrom a standard LCD will be significant too and you will need good optics to avoid distortions at the edges of the image.

author: Psi
author_rank: Super Contributor
timestamp: March 10, 2024, 12:33:05 am
content: People used to make DIY headsets for flying RC planes/quads FPV. Usually with a fresnel lens in front of a 5" lcd display.It was mostly ok for that purpose because back then we were all flying standard definition analog camera systems. So the quality was pretty bad to start with.The cost was pretty low. Could make one for $40. But it wasn't VR, just single LCD panel both eyes looked at.

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 10, 2024, 12:53:49 am
content: The interface on these LCD panels is usually MIPI, you'll find HDMI-MIPI interface boards on Aliexpress, good luck finding one that will match your particular panel though.Not worth it.You'll have a better time buying the controller board + matching LCD panel, lots of them on Ali & the like. 5/6", FHD for about $20-$30.Even 2K stuff, isn't that cute?https://www.aliexpress.com/item/1005006230209435.html
Damaged components received - Page 1
Forum section: electronics / general

author: Faringdon
author_rank: Super Contributor
timestamp: March 10, 2024, 11:31:08 am
content: Hi,Some time ago , i had contact with a company who wanted a 2kW PFC'd SMPS.They werent prepared to pay me to do it.But said if i could come up with a working prototype then they may consider this.So i layed out a board, did the 2kW PFC first.Used an interleaved PFC controller UCC28070 from ti.com.I had to order the chips from mouser or digikey.At first i ordered four, and one had a leg broken off and the other threewere ESD damaged.Then i ordered in another two...and again, both were ESD damaged.......this was evident with me justputting their Vcc supply on them.I had also pre-ordered the ferrite cores for the LLC converter....but all these arrived with chunks smashed off them.Due to the expense of the lab that i was hiring, i had to then give up at that point.I wasnt ordering these chips as a "company" as such, just as an individual.So maybe the "junior" staff were allowed to pick my order?...i dont know?Either way, its a bad state of affairs if anything ordered which isnt "under agenuine company name" doesnt arrive in good condition. Maybe they thought i might be a terroristor something?Has any other "individual" experienced the same thing?, may i please ask.

author: Gyro
author_rank: Super Contributor
timestamp: March 10, 2024, 09:00:22 pm
content: Oh FFS, how many more troll threads?