hybridfree/eevblog-posts huggingface dataset:
EELive conference in San Jose April 1-3 2014 - Page 1
Forum section: electronics / general

author: marshallh
author_rank: Unknown
timestamp: March 25, 2014, 05:02:36 pm
content: Anybody else going?Will make it for the second day probably, have a friend doing a talk there.Never been to San Jose before.You can get a free expo pass (exihibiton hall)here

author: marshallh
author_rank: Unknown
timestamp: March 27, 2014, 09:56:14 pm
content: Looks like I will be hanging around the area for several days. Will have to hit up the CHM a second time...

author: hanndoddi
author_rank: Contributor
timestamp: April 01, 2014, 04:29:38 pm
content: Would be really nice to be there, does any one know if any of the presentation will be available on video?I would really like to see Soup for Non-analog Designers that Need to Know Analog by Tim Green .

author: dc101
author_rank: Regular Contributor
timestamp: April 02, 2014, 01:14:46 am
content: I'll be there all week. Got my free tote this morning. The general cones was the free tote bags were underwhelming. Basically just flyers for free or discounted stuff. It makes sense though not to include actual boards since they may not be applicable to the recipient of the bag.As far as the sessions being available on video. I saw several being filmed so I'm sure they will be available shortly after the conference. R&S didn't film any of their stuff but they have slides available, I'll post the link later. I was shocked to discover Agilent wasn't there??? They're practically within walking distance of the convention center. One of the R&S guys said Agilent is hurting financially. News to me...Overall a pretty good first day, about what I expected.The appetizers at Kabul are outstanding...beware the green sauce...It's a tad on the spicey side. Haven't got my main dish yet. I tried Sushi Tango the first night...meh, underwhelmingly standard sushi....Also seemed like all their rolls had crab in them.

author: EEVblog
author_rank: Unknown
timestamp: April 02, 2014, 02:48:43 am
content: Chris Gammell is going, he's organising an Amp Hour meetup I think

author: dc101
author_rank: Regular Contributor
timestamp: April 02, 2014, 04:11:45 am
content: Here's the link to the R&S briefs:http://www.slideshare.net/mobile/rohdeschwarzna

author: dc101
author_rank: Regular Contributor
timestamp: April 02, 2014, 02:12:10 pm
content: More R&S scope demo boards will be given away during today's scope fundamentals class, according to R&S NA's twitter feed. Pics of the board here:https://twitter.com/mitreffahcs/status/451191774791213056

author: linux-works
author_rank: Super Contributor
timestamp: April 02, 2014, 02:45:09 pm
content: if folks want to get together for a group dinner, that might be fun.

author: dc101
author_rank: Regular Contributor
timestamp: April 02, 2014, 03:24:32 pm
content: I'm down for that. Not sure what night I have free though, I'm having dinner with the in-laws either tonight or Friday. Thursday night I'll be down in the lovely Monterey area for the evening.
High powered industrial megohmmeter - Page 1
Forum section: electronics / general

author: FrankenPC
author_rank: Unknown
timestamp: April 01, 2014, 04:45:17 am
content: For all you panzies still using batteries to power your puny little megohm meter...BEHOLD!http://www.ebay.com/itm/Extech-Handheld-Megohmmeter-380260-/400599558419?pt=LH_DefaultDomain_0&hash=item5d45982913

author: Little Brutus
author_rank: Unknown
timestamp: April 01, 2014, 03:55:24 pm
content: Impressive..... a 1.1hp 2 stroke meter!

author: GreyWoolfe
author_rank: Unknown
timestamp: April 02, 2014, 12:34:17 pm
content: HMMM, not sure I want a meter that requires a shoulder strap.
Agora TV - service manual - Page 1
Forum section: electronics / general

author: tinytim
author_rank: Contributor
timestamp: April 02, 2014, 11:41:10 am
content: Hi Guys,has anyone got a service manual for an AGORA agr-32-914-idtv TV?Its only a few years old but audio keeps cutting out, picture is supurb though...Have checked my usual resources and this is one service manual thats becoming a major pain the armpit.Any suggestions?regardsTim
Sure! Why not? - Page 1
Forum section: electronics / general

author: Stonent
author_rank: Super Contributor
timestamp: March 30, 2014, 08:53:02 am
content: http://www.artlebedev.com/everything/vilkus/Quote

author: BBQ
author_rank: Regular Contributor
timestamp: March 30, 2014, 09:41:27 am
content: Enhance the experience by using one finger from each hand.

author: dr.diesel
author_rank: Super Contributor
timestamp: March 30, 2014, 09:53:04 am
content: Quote from: BBQ on March 30, 2014, 09:41:27 amI think I just woke up my wife laughing.

author: electronics man
author_rank: Frequent Contributor
timestamp: March 30, 2014, 11:55:43 am
content: WTF do these people not care for there lives

author: T3sl4co1l
author_rank: Super Contributor
timestamp: March 30, 2014, 12:05:00 pm
content: Quote from: electronics man on March 30, 2014, 11:55:43 amI think it's a joke...But, keep in mind the saying: "any sufficiently advanced satire is indistinguishable from the thing it mocks".Tim

author: GreyWoolfe
author_rank: Unknown
timestamp: March 30, 2014, 01:02:39 pm
content: Do they make one for USA outlets? How about adjustable hole sizes so I could choose to use fingers or thumbs? How about a 3rd hole to ground for my tongue?

author: Cdngreybeard
author_rank: Contributor
timestamp: March 30, 2014, 09:20:24 pm
content: April fools!!!

author: GreyWoolfe
author_rank: Unknown
timestamp: March 31, 2014, 01:43:58 am
content: Quote from: Cdngreybeard on March 30, 2014, 09:20:24 pmHey, it has to be real, April Fool's is not until Tuesday!!!!!!!

author: echen1024
author_rank: Super Contributor
timestamp: March 31, 2014, 02:16:35 am
content: Who needs a wimpy NCV when you can just use this?

author: zapta
author_rank: Super Contributor
timestamp: March 31, 2014, 05:34:41 am
content: Quote from: Stonent on March 30, 2014, 08:53:02 amIs it lethal? The circuit will be closed at the hand, not getting to the heart.

author: Skimask
author_rank: Super Contributor
timestamp: March 31, 2014, 05:39:14 am
content: Quote from: zapta on March 31, 2014, 05:34:41 amDon't worry. Some will figure out how to use this adapter using both hands

author: KSP
author_rank: Regular Contributor
timestamp: March 31, 2014, 09:08:31 am
content: This is for people who are not so fond of their children... Just leave it in the socket, maybe put some jam on it to entice them further and BAM! "Officer, it was a terrible accident!"

author: Neilm
author_rank: Super Contributor
timestamp: April 01, 2014, 07:56:31 pm
content: Quote from: KSP on March 31, 2014, 09:08:31 amI wonder if that would work with managers...

author: amyk
author_rank: Super Contributor
timestamp: April 01, 2014, 08:41:57 pm
content: This is at least several years old... but still trips people up.

author: os40la
author_rank: Regular Contributor
timestamp: April 01, 2014, 08:52:13 pm
content: Quote from: GreyWoolfe on March 30, 2014, 01:02:39 pmYou could put something other than your tongue in the 3rd hole.....Just don't let the wife catch ya

author: Gribo
author_rank: Frequent Contributor
timestamp: April 02, 2014, 11:39:30 am
content: A must have for every engineer, along with the Etherkiller.
Crazy builds taser into car door handle - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: March 31, 2014, 01:45:37 pm
content: he calls it cop blocking

author: zapta
author_rank: Super Contributor
timestamp: March 31, 2014, 04:13:25 pm
content: Awesome! A citizen stands for his rights.

author: N2IXK
author_rank: Frequent Contributor
timestamp: March 31, 2014, 11:07:43 pm
content: Pretty sure the taser in the door handle would be viewed as an illegal boobytrap if anyone (particularly a cop) ever got hit with it. And the oil injection smoke screen certainly violates pollution laws if nothing else. Nowadays, probably get you a trumped up "release of a chemical weapon" charge if the feds get involved...Actually installed a couple systems like this many years ago. Oil injected into the exhaust manifold for smoke, propane injected near the tailpipe (with a spark igniter at the opening) for shooting flames.More power to him for standing up against abusive cops (and there are LOTS of them around), but those 2 items actually give the cops a legally justifiable REASON to bust his balls. Part of me suspects that provocation might be just what this guy wants, though...

author: smashedProton
author_rank: Frequent Contributor
timestamp: March 31, 2014, 11:33:40 pm
content: Why not just lock it?

author: Sionyn
author_rank: Frequent Contributor
timestamp: April 01, 2014, 11:17:40 am
content: indeed his car handle shock device is sure go to jail card

author: HighVoltage
author_rank: Super Contributor
timestamp: April 01, 2014, 05:42:03 pm
content: Interesting concept, but ...I just imagine a child touching such handle and falling over and getting injured.This guy will never get happy again in his life.

author: Macbeth
author_rank: Super Contributor
timestamp: April 01, 2014, 06:25:28 pm
content: Surely just using the cars double locking would be good enough? Especially with bullet proof glass.Though I don't mind the guy protecting himself from out of control US cops. But I somehow have the sneaking feeling he will use his safety measures to test the boundaries...

author: amyk
author_rank: Super Contributor
timestamp: April 01, 2014, 08:40:18 pm
content: Haven't looked at the video in detail but to shock there has to be a complete circuit; how would only touching a door handle work? (I'm assuming people standing outside, where cars are, would be wearing insulating shoes, so going through the ground won't work either.)

author: N2IXK
author_rank: Frequent Contributor
timestamp: April 01, 2014, 10:47:35 pm
content: I would guess both electrodes are under the handle, so you get zapped across the hand when you grab the handle. Probably pretty effective at making a cop let go...then reach for a gun.Surprised he hasn't tried the revolving license plate frame, or a radar jammer.

author: Jope
author_rank: Regular Contributor
timestamp: April 02, 2014, 09:42:09 am
content: Reminds me a bit of the South African flamethrower for cars from 1998:Blaster..
And let the April Fools pranks begin... - Page 1
Forum section: electronics / general

author: Skimask
author_rank: Super Contributor
timestamp: April 01, 2014, 07:14:20 am
content: How long before the mass media runs with this one?http://www.spaceflightnow.com/news/n1404/01shuttle/#.UzpmxvldXIY

author: brabus
author_rank: Frequent Contributor
timestamp: April 01, 2014, 07:51:27 am
content: HA! I am literally bent on the chair!p.s.: I suggest a modification for your signature: "Chuck Norris turned it on, without taking it apart"

author: Skimask
author_rank: Super Contributor
timestamp: April 01, 2014, 12:21:11 pm
content: Chuck Norris didn't turn it on.It took itself apart.

author: rsjsouza
author_rank: Super Contributor
timestamp: April 01, 2014, 05:51:29 pm
content: And here is another one:http://e2e.ti.com/blogs_/b/precisiondesignshub/archive/2014/03/31/a-guide-to-the-construction-of-an-emergency-transceiver.aspx

author: IanB
author_rank: Super Contributor
timestamp: April 01, 2014, 05:57:38 pm
content: Quote from: rsjsouza on April 01, 2014, 05:51:29 pmGaah! Someone wroteimpurity'sinstead ofimpurities. The pain, the pain...

author: rsjsouza
author_rank: Super Contributor
timestamp: April 01, 2014, 06:07:32 pm
content: Quote from: IanB on April 01, 2014, 05:57:38 pmI guess the author regards that impurities are so important that he introduced some in the text itself!
Im building a component program but i need a little help - Page 1
Forum section: electronics / general

author: carbon dude oxide
author_rank: Frequent Contributor
timestamp: April 01, 2014, 11:07:58 am
content: hello every bodyim currently in college studying for an electrical and electronic HnD.one of the modules includes C++ programming which out of the class of 30 only 3 have done before (thats including meso those lessons can get very boring while the teacher explains the same thing repeatedly each week. so to cure my boredom i decided to make a MFC program which can do different circuit analysis techniques (like tevinins).so far i have gotten the program to organise components and i have just gotten it to construct the circuit on the screen (next step to begin calculations).i would like this program to look nice and clean in the hopes that eventually the college might even use the programso i was wondering if anyone know where i could get 16x15 icons for the different components that look nice and are licence free. i have having quite a hard time finding some :/if anyone is handy with image editing and are willing to make the icons i would defiantly include them in and fully list you as one of the people who helped make the program. (the list is very short at the moment only including me. its lonely there)if anyone would like to have a look at the program let me know and il post some picturesif anyone is able to help me with this it would be brilliant as i am hopeless at making nice iconsEDIT: changed 16x16 to 16x15 as the images need to be 16 wide by 15 high

author: Bored@Work
author_rank: Super Contributor
timestamp: April 01, 2014, 02:09:20 pm
content: Quote from: carbon dude oxide on April 01, 2014, 11:07:58 am16x15 as in 16 pixels by 15 pixels? Sounds like you are heading the wrong way here. These days such stuff is done with vector drawings, not bitmaps. Bitmaps just don't scale properly and look really bad on high-resolution devices.As for symbols, I would raid one of the open-source / free software packages for their vector drawings. Or some open-source typesetting libraries for schematics, e.g. the ones for (La)TeX or Circuit Macros or whatever you can get your hands on and legally reuse.

author: carbon dude oxide
author_rank: Frequent Contributor
timestamp: April 01, 2014, 02:56:44 pm
content: Quote from: Bored@Work on April 01, 2014, 02:09:20 pmthe images do not get scaled, they are literally just a small indicator on a hierarchy chart, i am doing vector drawings for the actual componentsthe icons are for the window on the left in the uploaded picture
Wacom for EE CAD -- Worthwhile? - Page 1
Forum section: electronics / general

author: Phaedrus
author_rank: Frequent Contributor
timestamp: April 01, 2014, 06:24:49 am
content: I've got a buddy selling his old 9x12" Wacom Intuos 3. I was wondering if it has any utility for PCB design, since he's offering me a free test drive on it. Have any of you tried it?

author: Gribo
author_rank: Frequent Contributor
timestamp: April 01, 2014, 06:35:36 am
content: I have a Wacom Graphire, and it is quite useless for schematic and layout jobs in my opinion. However, if you work long hours in front of the computer, and your wrists hurt as a result, such a tablet will be quite helpful.

author: Dago
author_rank: Frequent Contributor
timestamp: April 01, 2014, 07:46:09 am
content: I once tried using some Wacom (bamboo something) for layout and it "works" but even after forcing myself to use it for a week I just felt a mouse is way better. I have a friend who uses a Wacom for all of his layout work though.

author: NegativeONE
author_rank: Contributor
timestamp: April 01, 2014, 08:04:12 am
content: I have Intuos 3 and I'm using it only for graphic in Photoshop - for this purpose it is a great device. I just open a project in EagleCAD and mess with it using Wacom - to be honest there was no flares, it works just as a normal pointing device and I'm still will be using a good mouse for this purpose - imho mouse feels better in CAD.
I need opinions on a dvd player - Page 1
Forum section: electronics / general

author: Biff383
author_rank: Regular Contributor
timestamp: March 31, 2014, 03:48:41 pm
content: I need to know who makes the best dvd maybe blue ray player. This is for ma who happens to be 74 and doesn't have a clue........ (and doesn't want to).It needs to be portable and it needs to be easy to use.It needs to be quality and price is a second thought. Two buttons would be her speed but.... any input is appreciated.Thanks..

author: tom66
author_rank: Super Contributor
timestamp: March 31, 2014, 03:55:01 pm
content: Portable - mains powered or battery powered?As far as easy to use most aren't as the Blu-Ray menus are Java powered, so they can do nearly anything they like!Although XBMC (media centre) can be configured to play the first numbered title, this is not always the movie title.

author: Biff383
author_rank: Regular Contributor
timestamp: March 31, 2014, 03:58:40 pm
content: I would say battery and wall wart as far as power goes. Just something simple.
prametric search script / module / plugin - Page 1
Forum section: electronics / general

author: Simon
author_rank: Unknown
timestamp: March 29, 2014, 09:40:32 am
content: Is there an "off the shelf" module that would allow me to add a parametric search to a website like say the one farnell has ?

author: ablacon64
author_rank: Frequent Contributor
timestamp: March 29, 2014, 01:46:55 pm
content: That would be a dream, but I don't think there is such a tool. Some manufacturers have parametric search on their websites, but only for their own products. I have seen some manufacturers (can't remember right now) that provide a comparison chart (or search engine) from their stuff to other manufacturers.
Finally a Flux Capacitor - Page 1
Forum section: electronics / general

author: keethrax
author_rank: Contributor
timestamp: April 01, 2014, 04:26:34 pm
content: http://www.thinkgeek.com/product/1ba1/?pfm=af14_homepage_Featured_4_1ba1Looks kinda cheap and crappy. They should have gotten Dave to help them design this. Then maybe I'd vote for it.

author: krivx
author_rank: Frequent Contributor
timestamp: April 01, 2014, 04:35:38 pm
content: Try adding it to your cart...

author: keethrax
author_rank: Contributor
timestamp: April 04, 2014, 05:24:16 pm
content: Quote from: krivx on April 01, 2014, 04:35:38 pmThat's why the: "Then maybe I'd vote for it." in my post. Traditionally ThinkGeek actually ends up making at least some of their April fools items. Generally decided by a vote (and by if they're possible in the first place.) This one, however, looked poorly executed despite being an idea I thought was amusing, so I would not have voted for it to become a real product.Note: I suspect the "voting" is BS and they already know which ones will hit production. But, whatever,
OT funny - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: March 29, 2014, 04:04:49 am
content: kt

author: Zbig
author_rank: Frequent Contributor
timestamp: March 29, 2014, 12:51:26 pm
content: Worked pretty well with the Drum'n'bass-y stuff I just happened to be listening to at the moment
Yamaha amplifier - could use some pointers - Page 1
Forum section: electronics / general

author: RecycledElectron
author_rank: Newbie
timestamp: March 28, 2014, 03:54:01 pm
content: Hi @ everyone! New forum member here.Decided to register after lurking for quite some time since I could need a little help.The problem I try to solve is like this:I have a Yamaha AX-380 stereo amp sitting in front of me - also got hold of the schematic in PDF form. The amp works, meaning it's not totally dead, but onbothspeaker outputs the right channel does nothing. However, the left channel does give sound on both outputs.That being said, left and right is actually working on the headphone plug, so the pre-amp providing the signal to the headphones seems to work (I assume). I don't see any blown/bad caps, it's not related to the input (same symptom no matter if I feed the audio into the amp through Tuner, Aux, CD or Tape RCA jacks), and the voltages around the board all check out fine.What's the best approach now to figure out where the signal disappears? Follow the input on the scope and see where I get a "flatline" instead of the audio signal? If I get a signal all the way to the MOSFET, how do I figure out if it might be blown?Or... any chance I'm about to take the wrong approach?Thanks for any help.EDIT:Nevermind, I found the problem. It's the solder joints of the speaker clamps that's at fault. I get a audio signal right down to the solder point on the main PCB, but not on the leads going up to the outputs. Gently wiggling gets a audio at random. Time to undo everything, completely take out the main PCB and re-solder the joints./EDIT
mil spec brownies - Page 1
Forum section: electronics / general

author: BBQ
author_rank: Regular Contributor
timestamp: March 26, 2014, 08:03:08 pm
content: How about some rugged, all terrain, all palate capability dessert?http://nsarchive.wordpress.com/2010/05/28/document-friday-the-militarys-26-page-brownie-recipe/

author: SArepairman
author_rank: Frequent Contributor
timestamp: March 26, 2014, 08:10:24 pm
content: hmm... what is the jitter factor (how hard are you trembling when you go sit down on the toilet later?? (amplitude / square root of hertz please)i need to know because the MREs are taking my men to the brink.

author: dfmischler
author_rank: Frequent Contributor
timestamp: March 26, 2014, 08:57:19 pm
content: Quote from: SArepairman on March 26, 2014, 08:10:24 pmWhen you say "MREs" you mean "Meals Rejected by the Enemy", right?

author: SeanB
author_rank: Super Contributor
timestamp: March 27, 2014, 07:49:22 pm
content: I thing the US MRE's are a lot better than the 7 day ratpacks we had.Think of a small cardboard box about the size of a half loaf of bread, containing all the food you would need for a week. 1 small pack of tea, sugar packs and condensed milk. One small can of the following, corned beef, anchovied in hot sauce, beans, maize kernels, spaghetti in tomato. Also a pack of things that could be called biscuits, but which could also serve as lethal weapons in an emergency. A small pack of boiled sweets. A pack of fuel tabs to use to heat the lot and a box of unlabelled matches. you needed the standard things you has as issue, a set of cutlery ( still have mine), a water bottle and a camping fold out plate cum cooker along with a folding spade. That was to last 7 days. Not included was water purification tablets, which really should have been included. Also not included was the white gold, and meant you got really good at finding suitable leaves that did not cause any itching when used.
VBlog list - Page 1
Forum section: electronics / general

author: chipwitch
author_rank: Frequent Contributor
timestamp: March 28, 2014, 08:13:40 pm
content: I was wondering if anyone has compiled a list of Dave's videos in an easy to read, organized format. I find it very difficult to find anything. Dave has amassed quite a collection of videos. This work should be cataloged and cross-referenced, organized by subject and category (reviews, beginner tutorial, advanced tutorial, project, etc). It doesn't help that the google search field on the home page doesn't seem to work. I have to use the "site: eevblog.com" suffix and that returns forum hits as well as videos. I can't imagine that list hasn't been compiled somewhere?
going off the grid, not as easy as you think - Page 1
Forum section: electronics / general

author: staxquad
author_rank: Frequent Contributor
timestamp: March 26, 2014, 06:37:46 pm
content: going off the grid, not as easy as you thinkcan't collect rainwater on your property or you go to jail?can't collect sunlight on your property or you go to jail?can't collect wind on your property or you go to jail?most likely not all States would do thisthink this is a possibility in your Country?

author: Phaedrus
author_rank: Frequent Contributor
timestamp: March 26, 2014, 06:54:46 pm
content: Careful with RT, they are not always a reputable source. They've done good work covering the NSA leaks and issues, but that's mainly because it fits their existing anti-US slant.Being required to hook up to water/sewer systems was originally legislated in support of public health and sanitation, as prior to most people being the sewer system, a large amount of waste entered the water system. Requiring people to hook up to the sewer reduced this, and thus reduced risk of diseases like dysentery and Cholera. Is is possible that the lady in question may have created a system that used her waste safely, for instance feeding it into a compost system. But the local government probably has no way to test her system's efficacy in a cost effective way, and if everyone did it with variable levels of competency, it could post a public health risk. Even if she isn't a public health risk herself, they have to enforce the law to prevent it becoming a bigger issue in the future as more people try to go "off the grid".

author: senso
author_rank: Frequent Contributor
timestamp: March 26, 2014, 07:50:18 pm
content: In Portugal its illegal to have solar panels that are not connected directly to the power grid, so something like that is not surprising.

author: VK5RC
author_rank: Unknown
timestamp: March 26, 2014, 08:03:45 pm
content: That "pond" that "collected rainwater" looked a lot like a dam to me, water rights are a very complex issue. Sewerage has significant health issues unless done properly and has impacts on neighbours water table.
Help with embedding video - Page 1
Forum section: electronics / general

author: FrankenPC
author_rank: Unknown
timestamp: March 26, 2014, 04:11:09 am
content: So, I read the help. I Googled it. The only thing I come up with is simply paste a Youtube URL and it automagically works.Doesn't work for me. Does this forum hate Chrome?

author: Stonent
author_rank: Super Contributor
timestamp: March 26, 2014, 04:18:28 am
content: Quote from: FrankenPC on March 26, 2014, 04:11:09 amNo. Change https to http.

author: FrankBuss
author_rank: Unknown
timestamp: March 26, 2014, 04:21:29 am
content: Do you mean in this forum? Works for me:But the video owner has to allow to embed it, otherwise it won't get displayed. But it is the default, if the owner has not changed this setting, so might work for most videos.
TTL based tennis game kit - Page 1
Forum section: electronics / general

author: reagle
author_rank: Unknown
timestamp: March 24, 2013, 07:58:54 pm
content: Stumbled on this thing on tindie. That's one huge kit to build, but I do like the TTL-only aspect of it!https://tindie.com/shops/wmbuchholz/ttl-tennis-for-two

author: steve30
author_rank: Frequent Contributor
timestamp: March 24, 2013, 08:05:10 pm
content: Nice, I'd like something like that. Not sure I could afford one though.

author: Gall
author_rank: Frequent Contributor
timestamp: March 24, 2013, 08:15:06 pm
content: Hm, that isn't clone of the originalas the name suggests...

author: Unknown
author_rank: Unknown
timestamp: March 24, 2013, 10:20:37 pm
content: I am old enough to remember the original design, UK wise, was called "Ping-Pong"

author: reagle
author_rank: Unknown
timestamp: March 24, 2013, 10:47:00 pm
content: I attempted to build one in early nineties, using a Soviet clone of an IC specifically designed for this application. Not sure if it was myself or the clone part but it never worked

author: Unknown
author_rank: Unknown
timestamp: March 24, 2013, 11:33:43 pm
content: Quote from: reagle on March 24, 2013, 07:58:54 pmOn Dr. Hugo Holden's Electronics website he describes the circuit in a superb 100 page Pdf entitled "ATARI PONG E CIRCUIT ANALYSIS & LAWN TENNIS:"http://www.worldphaco.com/http://www.worldphaco.com/uploads/LAWN_TENNIS.pdf

author: justanothercanuck
author_rank: Frequent Contributor
timestamp: March 25, 2013, 06:42:12 am
content: I wonder how close this is to the original board... I believe it was also created mostly using logic chips.

author: GeoffS
author_rank: Unknown
timestamp: March 25, 2014, 10:32:15 am
content: I remember back in the day when I used to repair these sorts of arcade games (nearly 40 years ago!), there was little documentation from the manufacturer apart from circuit diagrams and parts lists.There were a couple of companies that produced service guides and explanations of how they worked for the service industry. Very helpful for those brought up on analogue electronics and needing a leg up to the digital side.
We need a super cheap microscope for electronics use - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: March 24, 2014, 08:25:07 pm
content: Maybe can be based on this ?http://news.yahoo.com/blogs/this-could-be-big-abc-news/super-cheap-paper-microscope-could-save-millions-lives-133616732.html?vp=1

author: Tinkerer
author_rank: Frequent Contributor
timestamp: March 24, 2014, 10:27:10 pm
content: Very interesting. That I think could very well be the end all of cheap portable microscope for the field for quick diagnostics.As for something that could be a bit more precise and only a little more expensive, I would have to go with a device based off of this:http://www.ted.com/talks/josh_silver_demos_adjustable_liquid_filled_eyeglassesInstead of having a fixed solid lense, you adjust a liquid filled 'bag' to change the focus.
Eclipse ESD Mat - Page 1
Forum section: electronics / general

author: kc9qvl
author_rank: Regular Contributor
timestamp: March 24, 2014, 02:17:16 am
content: Are these esd mats decent? Anyone using one. Hows the top. Would guess not solder proof. Durability?http://www.testequipmentdepot.com/eclipse/esd-static-protection/mats.htm

author: nanofrog
author_rank: Super Contributor
timestamp: March 24, 2014, 03:25:08 am
content: What exactly will you be doing on it?If you mean to solder projects, it's not the way to go, as it melts when it comes in contact with molten solder. But if you're only taking things apart/putting them back together, such as fixing/upgrading computers, it would be fine.There aremats on clearance from All-Specthat might fit your needs. 3x listings for 24"x36", 1x listing for 24"x48", larger, can handle molten solder, and for very similar or less money than what you linked. Also just got a larger size of one of these (medium duty @ 0.060"/1.5mm thick), and it's decent. Especially for the price.I'd get one ASAP before they're gone.If you miss them (seems plenty of stock yet), or decide you want a different size than is available above, take a look atthis vendor on eBay. Very good quality, lots of selection (size, color, and kits <incl. grounding block & wrist strap> or just mats w/ snaps & ground wire), and will do custom sizes if you need. Mat is 0.080"/2mm thick, so it's heavy duty. Bought one from this seller, and it's good mat material, and well priced vs. other sources.
TI's inductorless AC LED driver is cute - Page 1
Forum section: electronics / general

author: Marco
author_rank: Super Contributor
timestamp: March 23, 2014, 03:54:02 pm
content: Just saw this in a google add :http://www.ti.com/product/tps92411?DCMP=pwr-pss-lpp-tps92411-en&HQS=pwr-pss-lpp-tps92411-bs-enThat's a pretty cute idea for a LED driver ... although you'd need pretty long LED strings to make it work with 220V. Still it might be good simply for a PFC stage, is this an old idea? (Using a segmented buffer capacitor after a rectifier and charging the segments individually as the AC got high enough to present a high PF load.)

author: Zero999
author_rank: Super Contributor
timestamp: March 23, 2014, 09:40:38 pm
content: It's a cleaver idea. I haven't seen anything like that before. They have a 230V version too.
Chinese Power Supply with Multiple V+ and V- Terminals - Page 1
Forum section: electronics / general

author: Railroader
author_rank: Newbie
timestamp: March 22, 2014, 01:36:43 am
content: I have just purchased a generic 12V 10A Power Supply from China on eBay. The photos show that it has two V+ terminals and two V- terminals. Does anyone know whether these are two separate outputs with independent over current monitors or are just one output with two sets of terminals for convenience?

author: Monkeh
author_rank: Super Contributor
timestamp: March 22, 2014, 01:41:05 am
content: You tell us when you get it..Probably just ganged terminals, though.

author: VK3DRB
author_rank: Super Contributor
timestamp: March 22, 2014, 06:26:09 am
content: You better check it is safe. The communist Chinese flog a lot of dodgy equipment on eBay. Some of it is downright dangerous (I had seen examples of this). Some of it has safety approvals printed on the box or case, but it is fraudulent. Some don't even have safety approval labels at all. In Australia a lot of stuff is bought on eBay and illegally imported from third world countries like China.I suggest before you do anything, open the power supply up and check for case earthing, bad solder joints, poor insulation, loose screws etc. Fix anything that looks dodgy.Before you plug anything into the output, check the + and - are not reversed and is at the expected voltages.

author: amyk
author_rank: Super Contributor
timestamp: March 22, 2014, 01:30:02 pm
content: Open it up and look at the PCB, that should tell you.
University blues - Page 1
Forum section: electronics / general

author: Shock
author_rank: Super Contributor
timestamp: March 24, 2014, 10:37:36 am
content: Interesting diagrams, spot the mistakes.http://www.uq.edu.au/_School_Science_Lessonshttp://www.uq.edu.au/_School_Science_Lessons/UNPh30.1.html#30.6.7.2

author: VK5RC
author_rank: Unknown
timestamp: March 24, 2014, 10:50:55 am
content: And you wonder how so few people died with the insulation disaster!I suppose the plug and socket views do depend from which side you are supposed to be (not mentioned), but then the diagram below switches the 'neutral'.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: March 24, 2014, 10:56:34 am
content: Looks drawn in Paint. Is this what everyones' tuition/tax dollars pay for these days?Tim
EEVblog Youtube ads - Page 1
Forum section: electronics / general

author: TheBorg
author_rank: Frequent Contributor
timestamp: March 21, 2014, 04:50:20 pm
content: Sorry if this has been posted before (it probably has).. but today I was browsing around youtube and got an ad.... from EEVblog! (And people don't think that your web page views are tracked)Now, normally I don't watch the ads, but this was just hilarious. "How to entertain a nerd!".Of course it showed some awesome stuff, blowing up a multimeter, crap of the week award... I was laughing my head off the whole time!Can't see anything but Dave getting lots more viewers from this. It was very entertaining and definitely made me want to see more EEVblog goodness!
Interlaced Youtube Videos - Page 1
Forum section: electronics / general

author: dexters_lab
author_rank: Unknown
timestamp: March 20, 2014, 02:16:58 pm
content: Does it annoy everyone else as much as me when people don't de-interlace their youtube videos?

author: Rigby
author_rank: Super Contributor
timestamp: March 20, 2014, 02:45:00 pm
content: Yes.Full-screening the video usually makes it look a lot better, for me.

author: SeanB
author_rank: Super Contributor
timestamp: March 21, 2014, 09:07:50 am
content: Depends more on the original format, some are truly horrible. WMV can get truly terrible, let alone those who still use RM. I prefer plain MP4 or Ogg. I have one media player that is trully picky as to input video, if it is not exactly as required it does not play, or stutters, but what do you expect of a $20 unit. At least audio is usable without much trouble.
wavetek datron 1271 help - Page 1
Forum section: electronics / general

author: GNTechnologies
author_rank: Newbie
timestamp: December 21, 2013, 02:19:07 am
content: Our 1271 recently died after many years of faithful service. I bought a used one which passed self tests ans self cal. Currently it is out for calibration but fails with error s225322732283It looks like the unit has not been calibrated in a long time (years), so the drift rates it wants for a regular cal are making the 1271 mad. I also lost my 1271 calibration manual, so I am shooting in the dark on this one.Does anyone have the calibration manuals? and anyhelp on the errors?

author: echen1024
author_rank: Super Contributor
timestamp: December 21, 2013, 04:54:34 am
content: I would advise asking Wavetek is they still exist, but here is the calibration manual for the 1281. It is at the very endhttp://measure.feld.cvut.cz/groups/metrology/vybaveni/obr/Datron1281____umeng0000.pdfI can't find one t=for the 1271, but these 2 are very similar

author: starjohn
author_rank: Newbie
timestamp: March 21, 2014, 07:58:11 am
content: Here is the calibration manual definitions of the following error codes.2253 +10V Ref Magnitude DriftDigital comparison of the present magnitude against that recorded at themost-recent Internal Source Cal.Magnitude Drift 0.999940 < drift < 1.0000602273 1V Range Attenuated +10V Ref Magnitude DriftDigital comparison of the present magnitude against that recorded at themost-recent Internal Source Cal.+100mV Signal Mag. Drift +0.999910 < drift < 1.0000902283 100mV Range - Attenuated +10V Ref Magnitude DriftDigital comparison of the present magnitude against that recorded at themost-recent Internal Source Cal.+100mV Signal Mag. Drift +0.9999< drift < 1.0001
Bios battery and anti static packaging - Page 1
Forum section: electronics / general

author: The Good Dr
author_rank: Contributor
timestamp: March 18, 2014, 07:02:59 pm
content: Hello this may sound like a really dumb question but I have a quantity of single board computers which I am selling, I have purchased some anti static bags to package these in. Do I remove the bios battery before packaging or is it safe to leave it on the board?Thank you for reading

author: mcinque
author_rank: Unknown
timestamp: March 18, 2014, 08:29:16 pm
content: IMHO it's ininfluent to leave the battery on place.

author: brabus
author_rank: Frequent Contributor
timestamp: March 18, 2014, 08:36:18 pm
content: Two things to notice:1) Every time I bought a motherboard, BIOS battery was installed and everything was wrapped in antistatic bag2) Antistatic bags offer high resistance, Dave actually talks about that in a video; unfortunately I don't recall the exact video number.Good luck with your sales!

author: The Good Dr
author_rank: Contributor
timestamp: March 18, 2014, 08:45:12 pm
content: Thank you both for the replies

author: justanothercanuck
author_rank: Frequent Contributor
timestamp: March 21, 2014, 05:28:32 am
content: Be careful, as some countries have issues with sending batteries past customs. I can't buy batteries from Mouser, for example.
Matching LCDs to cell phones - Page 1
Forum section: electronics / general

author: Druzyek
author_rank: Contributor
timestamp: March 21, 2014, 09:32:30 am
content: I would like to find a 2 inch LCD from a cell phone for my project. Adafruit has a really nice one here:http://www.adafruit.com/products/1480Where I live it is a lot easier to find LCDs locally than to have them shipped but I would have to know the phone model it came out of. Is there any way to find this out? Googling the chipset (ILI9340) and the LCD model (TM022HDH26) didn't turn anything up.Any other LCD with at least a 2 inch color screen, a solderable ribbon, and working code will work if you know the phone it came from. Any suggestions?

author: Skimask
author_rank: Super Contributor
timestamp: March 21, 2014, 09:52:41 am
content: Quote from: Druzyek on March 21, 2014, 09:32:30 amWhere I liveWhere's that?

author: Rasz
author_rank: Super Contributor
timestamp: March 21, 2014, 11:56:09 am
content: I think you will like this:http://andybrown.me.uk/wk/category/hardware/

author: amyk
author_rank: Super Contributor
timestamp: March 21, 2014, 12:19:33 pm
content: Most of the use one of a few standard controllers, so it shouldn't be too hard to get them working.http://wiki.s1mp3.org/LCMControllers

author: Druzyek
author_rank: Contributor
timestamp: March 21, 2014, 12:40:12 pm
content: @Rasz, those are really neat but none of those are solderable. They all use little board connectors. (Don't mean to be picky but I don't think I could solder wires to one of those.)@amyl, that's true but figuring out the pin outs and voltages with no datasheet is pretty difficult. You won't even know if it is I2C or SPI. I have a quite a few LCDs that I know absolutely nothing about.

author: Bored@Work
author_rank: Super Contributor
timestamp: March 21, 2014, 01:31:20 pm
content: If you don't manage to or can't revers engineer the interface of a random LCD then the solution is rather simple:The seller has to tell you where it comes from.You then cross-check if there is sufficient information on the Internet how to use that LCD.You further check if you can solder it or can get a solderable connector/cable for it.If the seller can't tell you, or you can't find information about it on the Internet don't buy the particular LCD.If you can't solder it and if you can't obtain a suitable, solderable connector/cable then again don't buy that LCD.So what exactly is your problem? The remaining potential candidates available in your country (wherever that is, you refused to tell), being zero? Bad luck.

author: Druzyek
author_rank: Contributor
timestamp: March 21, 2014, 02:18:05 pm
content: @Bored@Work, I'm in Kyrgyzstan. Like I said, I can find LCDs if I know the phone name. You should reread the thread. You don't seem to understand what we are talking about. Obviously you should not buy an LCD you don't know anything about. That is the whole point of my question. I'm looking for one that I know will work AND what phone it came from so I can go and buy it.
Analog Circuit Design Volume 2 and Volume 3 by Jim Williams and Bob Dobkin - Page 1
Forum section: electronics / general

author: casinada
author_rank: Frequent Contributor
timestamp: March 19, 2014, 07:24:07 am
content: I guess I missed when these great books came out:Analog Circuit Design Volume 2, 1st EditionImmersion in the Black Art of Analog DesignBy Jim Williams and Bob Dobkinhttp://store.elsevier.com/product.jsp?isbn=9780123979025&pagename=searchAnalog Circuit Design Volume Three, 1st EditionDesign Note CollectionBy Bob Dobkin and John Hamburgerhttp://store.elsevier.com/product.jsp?isbn=9780128000014&pagename=searchVolume 3 is not out yet but I expect to be excellent as the other ones.I have only The first two:Analog Circuit Design - Art, Science, and Personalities by Jim WilliamsAnalog Circuit Design - A Tutorial Guide to Applications and Solutions by Bob Dobkin and Jim WilliamsI also don't have this oneThe Art and Science of Analog Circuit Design, 1st Editionhttp://store.elsevier.com/product.jsp?isbn=9780750670623&pagename=search

author: David Hess
author_rank: Super Contributor
timestamp: March 19, 2014, 12:48:57 pm
content: I lot of the content of the 3 volume set comes from the various application notes that Linear Technology published. I do not doubt they are worth getting but if you have all of Linear Technology's application books or application notes, then you have most of of the 3 volume set already.
Donation/Support question - Page 1
Forum section: electronics / general

author: Pillager
author_rank: Unknown
timestamp: March 18, 2014, 10:56:08 pm
content: Hi!Maybe this was already covered in a previous thread, but I couldn't find anything on it.There are options for donations from $2 to $20 per month and there is the supporter option, which is $25.But $25 per what? When I click on the "ORDER"-button, I get the "Order with PayPal"-button and a checkbox saying "Make this a recurring payment.".But just how often will this payment recur? Monthly?Thanks, Tom

author: dr.diesel
author_rank: Super Contributor
timestamp: March 18, 2014, 10:58:51 pm
content: The supporter option is $25/year, or at least used to be.

author: Pillager
author_rank: Unknown
timestamp: March 18, 2014, 11:01:47 pm
content: Thanks for clearing that up.
What Electronics / Ham Radio Videocast Am I Thinking Of? - Page 1
Forum section: electronics / general

author: ODE
author_rank: Newbie
timestamp: March 18, 2014, 03:36:42 am
content: Hi,About five or six years ago I watched a videocast about electronics / ham radio (think it may have been mostly about radio) and I can't remember what it was called.It was hosted by two or three guys from the southern United States. The main host was about 50 and had fair hair (may have been fairly long).They seemed like good friends and occasionally had contributions from an Australian guy with short hair. I particularly remember him doing a bit about a cheap hand-held SW radio he bought.The video was hosted on their own site.Anyone know what it was called and if it is still going?Thanks

author: SeanB
author_rank: Super Contributor
timestamp: March 18, 2014, 04:14:59 am
content: Amateurlogic.TV Still going, up to episode 64 now. Quite a good watch.

author: apelly
author_rank: Unknown
timestamp: March 18, 2014, 05:49:12 am
content: Watched their last episode. Made me go and make Vegemite on toast. And it wasgood!

author: ODE
author_rank: Newbie
timestamp: March 18, 2014, 01:13:08 pm
content: Quote from: SeanB on March 18, 2014, 04:14:59 amHa, that's the one!I'll be catching up on some episodes.Has Jim left the show now? He isn't in any of the thumbnails of the videos any more. I remember him creating havoc in his lab in one episode, almost knocking over a blow torch.

author: ElektroQuark
author_rank: Unknown
timestamp: March 18, 2014, 02:10:39 pm
content: Quote from: apelly on March 18, 2014, 05:49:12 amMarmite?

author: SeanB
author_rank: Super Contributor
timestamp: March 18, 2014, 06:57:52 pm
content: Marmite, close enough. Sadly the factory near me closed down and moved. Now I cannot tell which way the wind is blowing. I love that smell of the plant.

author: apelly
author_rank: Unknown
timestamp: March 18, 2014, 09:49:43 pm
content: I was actually quite entertained by how quickly my desire to have Vegemite increased as the two hosts were trying it and commenting on it. I'm not sure if I felt more like Pavlov's dog, or a taunted drug addict.Vegemite is suspicious like that!Marmite would have done in a pinch.
Fluorescent tube recycling - Page 1
Forum section: electronics / general

author: Shock
author_rank: Super Contributor
timestamp: March 18, 2014, 04:31:55 am
content: I thought they couldn't be reused. At 3:30 the recycling picks up a little.

author: nitro2k01
author_rank: Frequent Contributor
timestamp: March 18, 2014, 05:12:20 am
content: Wanna place bets on what going to ultimately kill him, acute heavy metal poisoning, or cancer? I hope for their sake that they were dummies...

author: nihilism
author_rank: Regular Contributor
timestamp: March 18, 2014, 03:00:41 pm
content: I'm glad i'm not the one that has to clean up after them.

author: G7PSK
author_rank: Super Contributor
timestamp: March 18, 2014, 06:17:41 pm
content: Fakirs or fakers, that looks like real blood at the end.