hybridfree/eevblog-posts huggingface dataset:
help current transfer characteristics of BJTs - Page 1
Forum section: electronics / general

author: uranium235
author_rank: Contributor
timestamp: July 08, 2011, 12:29:35 pm
content: guys i need help i want to know how to do this kind of experimentcurrent transfer characteristics of BJTsafter performing this experiment the student will be able to-- show that leakage current is neglible, and-- confirm that CE current gain is constantusing 2n2907 PNP transistorthanks alot in advance

author: Bored@Work
author_rank: Super Contributor
timestamp: July 08, 2011, 03:16:39 pm
content: Someone didn't pay attention in class and didn't read his textbook, eh?

author: tecman
author_rank: Frequent Contributor
timestamp: July 08, 2011, 05:27:16 pm
content: Like most BJTs, nothing is constant. Hfe varies with them, collector current and of course, base drive. Likewise leakage will vary with temp and voltage. I don't think that you could show either of your assertions.http://www.datasheetcatalog.org/datasheet/SGSThomsonMicroelectronics/mXttwyu.pdfpaul

author: gregariz
author_rank: Frequent Contributor
timestamp: July 08, 2011, 07:05:26 pm
content: go to the library and look for a transistor book by either Milton Kiver or Delton Horn. But there are lots of others as well.
14-Segment 16-Digit VFD Controller/Driver - Page 1
Forum section: electronics / general

author: sdscotto
author_rank: Contributor
timestamp: July 02, 2011, 09:03:15 pm
content: Does anyone know where I can purchase some (<50) 14-Segment 16-Digit VFD Controller/Driver chips?I would have ideally wanted something like the Maxim MAX6851, but as usual, a perfect chip that is not available. I've used and would be fine with an Oki MSC1937-01, but can't find a supplier for that one either.Looking for ideas.Thanks in advance,scotto
40GB of data that will cost you one uk house - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: July 01, 2011, 03:58:47 pm
content: http://www.pcpro.co.uk/news/368383/40gb-of-data-that-costs-the-same-as-a-house

author: ndictu
author_rank: Regular Contributor
timestamp: July 01, 2011, 04:12:56 pm
content: The prices are over the roof because mobile operators decided to make it so, each one keeping more or less the same price so you can't avoid it, while they collect nice profit. SMS are even worse, they cost next to nothing to distribute, but if you wanted to put 40GB data through that...Actually, let's try that ... I picked price of SMS for some O2 Slovakia package, which is 0.06 Eur/SMS. Single SMS is 140 bytes long so there is 307 million messages to get 40GB of data through, which is 18.4 million Eur (26 mil USD, 17 mil GBP). I've read somewhere that the average markup on SMS messages in US is about 7000%, no idea how much it is here but a big chunk of that would be pure profit for the operator.QuoteIs that a standard bandwidth limit there? Because I do that much in about a week (I'm guessing that 40GB would be for a month?).
Actual bandwidth of this Avago isolation amplifier - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: July 01, 2011, 12:56:02 pm
content: I've few questions on the ACPL-790B/790A/7900:http://www.avagotech.com/pages/en/optocouplers_plastic/plastic_miniature_isolation_amplifier/acpl-7900-000e/According to the datasheet (Table 7, pp. 6), the typical gain of the parts is (G0,G1,G3) 8.2 V/V.Figures 17 & 18 (pp. 10) show the frequency response of the part. Does it mean that with a gain of 8.2V/V, the actual bandwidth of the part is 200kHz/8 = 25kHz only?Cheers

author: Unknown
author_rank: Unknown
timestamp: July 01, 2011, 02:32:10 pm
content: The gain plot is scaled for a reference of 8.2 V/V gain, not 1 V/V. therefore, 0 dB on the graph means an output voltage of 8.2V at 1V input for up to 70kHz or so.
Influences on op-amp performance due to power supply variation - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: July 01, 2011, 12:33:31 pm
content: Input to U2 will be limited to +/-300mV. If the gain of U2 is 8, the output of U2 will be +/-2.4V. The gain of U3 is adjusted in such a way that the Vout will fall within +/-5V.Since the Vout swings within +/-5V only, I plan to supply the U3 with +/-12V instead of +/-15V as shown in figure below. What're the possible effects on the op-amp performance with lower power supply?Cheers.

author: ejeffrey
author_rank: Super Contributor
timestamp: July 01, 2011, 12:52:58 pm
content: There shouldn't be any significant difference between +/- 12 and +/- 15. If you were running off +/-5 or even a +5V single supply you might see a reduction in slew rate and bandwidth.
"OUTATIME"............Dave a BTTF fan? - Page 1
Forum section: electronics / general

author: IanJ
author_rank: Unknown
timestamp: June 30, 2011, 04:22:06 pm
content: Hi all,I noticed the BTTF license plate in Dave's workshop..............so here's mine;-Anyone else......Ian.

author: sacherjj
author_rank: Frequent Contributor
timestamp: June 30, 2011, 06:00:01 pm
content: 'bout all I got is the BTTF games on my laptop, that I am halfway through playing. Well and the box set.

author: Vertigo
author_rank: Regular Contributor
timestamp: June 30, 2011, 08:27:55 pm
content: for a fanboy collection, that is actually quite tastefuli especially like the western photo.

author: Ronnie
author_rank: Regular Contributor
timestamp: July 01, 2011, 04:22:28 am
content: @ IanIs that a Circuit Specialists bench power supply below the scope like this onehttp://www.circuitspecialists.com/csi3003x3.html?

author: IanJ
author_rank: Unknown
timestamp: July 01, 2011, 05:07:58 am
content: Quote from: Ronnie on July 01, 2011, 04:22:28 amYes, but it's the 5A model not the 3A.Works great.Ian.

author: Simon
author_rank: Unknown
timestamp: July 01, 2011, 06:46:33 am
content: Quote from: IanJ on July 01, 2011, 05:07:58 amI thought this was about back to the future
Lattice semiconductor try social media and WIN!!!! - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: June 30, 2011, 01:12:09 pm
content: I've always wanted to do an engineering rap parody, but I'm sure I lack the writing/music/editing/singing skillz. You know, all that stuff that makes it work...Dave.

author: ndictu
author_rank: Regular Contributor
timestamp: June 30, 2011, 01:21:43 pm
content: Oh wow, that silicon wafer on gold chain is so pimpAlso:

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: June 30, 2011, 01:37:29 pm
content: .. but big-time FAIL at design contests....http://www.latticepldchallenge.com/rules

author: Sionyn
author_rank: Frequent Contributor
timestamp: June 30, 2011, 03:08:41 pm
content: alpinekat rocks
electronics inspired furniture.... - Page 1
Forum section: electronics / general

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: June 29, 2011, 05:43:42 pm
content: First the 555 footstool...http://www.evilmadscientist.com/article.php/555stoolWhat next.... suggestions ?TO-18 transistor bar-stoolClass fuse salt/pepper potsAxial resistor/diode door handles (colour coded for house number?)

author: Unknown
author_rank: Unknown
timestamp: June 29, 2011, 05:53:10 pm
content: Hahaha brilliant. But dont take it out unless you are amongst 'like-minded' people.A huge LED light fixture?

author: david77
author_rank: Frequent Contributor
timestamp: June 29, 2011, 08:30:25 pm
content: This is brilliantly nerdy! Now I want one tooHow about TO-3 dinner plates? TO-99 soup dishes?

author: tekfan
author_rank: Frequent Contributor
timestamp: June 29, 2011, 08:34:14 pm
content: Why did they put 1127 date code date on it? Why not something earlyer with the original Signetics logo.The top left one looks very retro:

author: RayJones
author_rank: Frequent Contributor
timestamp: June 29, 2011, 08:43:52 pm
content: This thread made me immediately think of this recent series of articles on Fine Woodworkinghttp://www.finewoodworking.com/item/37540/furniture-lab-tech-cabinet-part-ihttp://www.finewoodworking.com/item/37943/furniture-lab-tech-cabinet-part-2http://www.finewoodworking.com/item/38245/furniture-lab-tech-cabinet-grand-finaleThis was inspired by finding some large unpopulated PCBs in a scrap yard!

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: June 29, 2011, 11:33:46 pm
content: Quote from: tekfan on June 29, 2011, 08:34:14 pm..er because that's when it was made perhaps - week 27 2011

author: david77
author_rank: Frequent Contributor
timestamp: June 30, 2011, 02:40:19 am
content: Ooohhh... So it's from the future? Neat.

author: ivan747
author_rank: Super Contributor
timestamp: June 30, 2011, 03:59:39 am
content: Quote from: RayJones on June 29, 2011, 08:43:52 pmAs long as the CNC machine's drill bits are small enough, I consider it fine crafting, although i give more credit to hand crafting.
Well this seems like a great deal... - Page 1
Forum section: electronics / general

author: ndictu
author_rank: Regular Contributor
timestamp: June 27, 2011, 11:01:31 pm
content: http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_544331_-1

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: June 27, 2011, 11:21:00 pm
content: I am an lucky person too, I have one of those, and so I can sell it and get an Full size spaceship.Wow great news

author: Unknown
author_rank: Unknown
timestamp: June 27, 2011, 11:40:59 pm
content: You would imagine you could order 1-off at that price. Bargain.

author: ivan747
author_rank: Super Contributor
timestamp: June 28, 2011, 12:37:38 am
content: They use to have these sort of problems in pricing and in their catalog system overall. I once found a 999,999,999.99 blank item, reported it and they told me they added this kind of blank items before modifying them into a real product. The one I saw was left like that by mistake.

author: PeterG
author_rank: Frequent Contributor
timestamp: June 28, 2011, 05:11:19 am
content: Well, what can i say, thats inflation for you.......LOLRegards

author: Simon
author_rank: Unknown
timestamp: June 28, 2011, 05:46:09 am
content: they obviously don't like people buying less than 100 at a time

author: comox
author_rank: Regular Contributor
timestamp: June 28, 2011, 10:26:50 am
content: Jameco was my source of electronics parts back when I was a teenager in the '80s. I lived in Canada and would order from California by mail. My dad would pay the bill, and it took something like a month for the stuff to arrive, but when it did it was just like Christmas all over again! Heck, I even remember when they were called James Electronics back in the '70s. Glad to see that they are still around!I think the pricing is a subtle way of saying do not order SMDs in small quantities!!!!

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: June 28, 2011, 02:26:02 pm
content: Quote from: PeterG on June 28, 2011, 05:11:19 amTrue true LoL

author: ndictu
author_rank: Regular Contributor
timestamp: June 28, 2011, 03:31:41 pm
content: Inflation, that reminds me I could pay for that with this:
i am looking a kit .. - Page 1
Forum section: electronics / general

author: reeraslan
author_rank: Newbie
timestamp: June 27, 2011, 09:31:16 am
content: hi i am looking a kit that device is a Transceivering video and audio. Could you suggest anything about that device ?

author: PeterG
author_rank: Frequent Contributor
timestamp: June 27, 2011, 10:09:03 am
content: Do you need Wired,Wireless or Internet based design?
Transducer: current consumption from negative supply - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: July 02, 2011, 01:58:28 pm
content: LEM LA-55-P is a bi-directional current transducer which requires +/-15V power supply. According to the datasheet (see below), the current consumption is (10+Is)mA (or, (10+50)mA at Ipn=50A). If the primary current is a sinusoidal current, do you think the current consumptions from the +/-15V rails will be equal? Or, the positive rail tends to supply more current?Cheers.

author: Zero999
author_rank: Super Contributor
timestamp: July 02, 2011, 02:50:18 pm
content: The positive/negative current probably depend on the output voltage (which depends on the current being measured) and the load connected to the output.

author: onemilimeter
author_rank: Frequent Contributor
timestamp: July 02, 2011, 03:06:00 pm
content: Thanks. I'm currently figuring out how much VA is required by a transformer to supply the +/-15V for four LA-55-P transducers. I believe there is an op-amp insides the LA-55-P. I might be wrong but I heard before that the negative rail of an op-amp usually consumes very little current.

author: Unknown
author_rank: Unknown
timestamp: July 02, 2011, 03:16:14 pm
content: It is a current output device with a 1:1000 ratio of Isn:Ipn, therefore the supply current will vary with the output current.The supply for the sensor is 10mA, and add (with sign) whatever the output current will be to that.As the current output is flowing into 0V, when Ipn = say -50mA then the negative rail will be more heavily loaded.If you spec both rails for 60mA and provide decoupling capacitors for each rail close to the sensor then you should be fine across the entire measurement range.

author: Zero999
author_rank: Super Contributor
timestamp: July 02, 2011, 03:20:42 pm
content: Don't forget that 50mA is the RMS output current so the power supply should be able to handle 71mA + 10mA = 81mA peak per transducer.

author: Unknown
author_rank: Unknown
timestamp: July 02, 2011, 03:22:48 pm
content: Decoupling caps for an AC application.
Sagan Pics - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: June 23, 2011, 01:02:05 pm
content: Some people have asked for more Sagan, so here are a few choice ones.Captions invited!Dave.

author: dengorius
author_rank: Regular Contributor
timestamp: June 23, 2011, 01:12:33 pm
content: Ahaha welcome to this crazy world little buddy

author: ivan747
author_rank: Super Contributor
timestamp: June 23, 2011, 01:15:57 pm
content: Ha ha, the captions are pretty descriptive.By the way, when is the soldering tutorial going to be uploaded.

author: EEVblog
author_rank: Unknown
timestamp: June 23, 2011, 01:22:05 pm
content: Quote from: ivan747 on June 23, 2011, 01:15:57 pmWhen I'm done with some consulting work that's getting in the way.Dave.

author: insurgent
author_rank: Regular Contributor
timestamp: June 23, 2011, 02:48:03 pm
content: Awesome collection of pics that he will dread you showing to his first girldfriend!It's amazing how much processing power you've crammed into such a small space. Too bad it will take so long to work out all the bugs in the OS.

author: Madman
author_rank: Newbie
timestamp: June 23, 2011, 03:41:00 pm
content: Dave, she's such a cutie :-)Please promise us you wil NEVER be tempted to run a tear-down session on this amazing little project!

author: Mechatrommer
author_rank: Super Contributor
timestamp: June 23, 2011, 04:33:33 pm
content: whats the 2nd pic is doing? nevermind maybe i have some bad dream. tried to PM you dave but no attachment option, so here it is, some simple exercise. usually "mom" will like it. i hope not too much disturbance.

author: RayJones
author_rank: Frequent Contributor
timestamp: June 23, 2011, 08:30:14 pm
content: Quote from: Mechatrommer on June 23, 2011, 04:33:33 pmThe neural net has already been programmed to respond to the word Altium.

author: EEVblog
author_rank: Unknown
timestamp: June 23, 2011, 10:15:24 pm
content: Quote from: Madman on June 23, 2011, 03:41:00 pmIt's a HE!Dave.

author: Madman
author_rank: Newbie
timestamp: June 24, 2011, 08:45:47 am
content: Quote from: EEVblog on June 23, 2011, 10:15:24 pmOops, sorry Dave... due to atmospheric difaction when seen from the other side of the world :-)

author: EEVblog
author_rank: Unknown
timestamp: June 24, 2011, 10:57:25 am
content: Quote from: RayJones on June 23, 2011, 08:30:14 pmI can make much use of this photo and a text overlay toolSagan Says...Dave.

author: ndictu
author_rank: Regular Contributor
timestamp: June 24, 2011, 11:44:00 am
content: Quote from: EEVblog on June 24, 2011, 10:57:25 am

author: comox
author_rank: Regular Contributor
timestamp: June 24, 2011, 12:37:44 pm
content: Dave,Beautiful baby. Congratulations to you and your wife! Her hands will certainly be full now with two boys in the house (he he)!I have two girls. Raising children is hard work, but rewarding in a way like nothing else.Comox

author: TheWelly888
author_rank: Frequent Contributor
timestamp: June 24, 2011, 06:04:44 pm
content: Sagan's gorgeous! He reminds me of my godson when he was that age, all those faces he pulls!
ChenYang - ever heard before? - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: June 24, 2011, 07:57:35 am
content: Has anyone ever heard of this company ChenYang before? I think of using their hall current sensor. If you used before any of ChenYang products, please share your experience (e.g. quality, repeatability, reliability, etc.) of their products. It's based in Germany, but the management and R&D ...

author: thmjpr
author_rank: Regular Contributor
timestamp: June 24, 2011, 10:05:15 am
content: no, but here is a link so people don't have to search:http://www.hallsensors.de/Hall-IC.htmhttp://www.chenyang-ism.com/

author: onemilimeter
author_rank: Frequent Contributor
timestamp: June 24, 2011, 11:00:20 am
content: Quote from: thmjpr on June 24, 2011, 10:05:15 amThanks. I forgot to add links...
uk census data leaked  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: June 21, 2011, 02:01:17 pm
content: http://thenextweb.com/industry/2011/06/21/lulzsec-supposedly-claims-its-biggest-coup-yet-the-entire-uk-2011-census/

author: Hypernova
author_rank: Unknown
timestamp: June 22, 2011, 12:28:55 am
content: QuoteGuess we'll wait and see.

author: FreeThinker
author_rank: Frequent Contributor
timestamp: June 23, 2011, 11:54:31 am
content: Oh my Gawd! Now everyone will know that I just filled in bullshit on my census form!
What type of this capacitor? - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: June 23, 2011, 01:04:31 am
content: Hi...Found a gate driver circuit in lab this morning. What's the type of capacitor shown in attached images (circled)? By the way, what's the value of the capacitor? Is it 1uF (250V)?Cheers

author: Rufus
author_rank: Super Contributor
timestamp: June 23, 2011, 01:16:19 am
content: It is 0.1uF 250V polyester film capacitor made by EPCOS.Looks like 7.5mm pitch bent to fit in 5mm or 0.2" holes - lol.

author: onemilimeter
author_rank: Frequent Contributor
timestamp: June 23, 2011, 02:03:33 am
content: Quote from: Rufus on June 23, 2011, 01:16:19 amOnly manufactured by EPCOS?

author: Rufus
author_rank: Super Contributor
timestamp: June 23, 2011, 03:01:13 am
content: Quote from: onemilimeter on June 23, 2011, 02:03:33 amI don't know of anyone else that makes that particular style of uncased film capacitor. Much more common for them to be fitted in a plastic case or have a dipped coating.I don't know everything though.

author: Bored@Work
author_rank: Super Contributor
timestamp: June 23, 2011, 08:07:31 am
content: Many companies produce MKT capacitors. Although this uncoated variant is rare, and I also only know Epcos doing them (they took them over from Siemens). If you don't need the uncoated version, get a coated or potted MKT from your favorite dealer.

author: jimmc
author_rank: Frequent Contributor
timestamp: June 23, 2011, 09:32:56 am
content: As has been said, made by Siemens, B32560 series.Data sheet here...http://www.datasheetarchive.com/dl/Datasheets-31/DSA-618163.pdfThere was also a green version with a polycarbonate dielectric.Jim
Help ID Component - Page 1
Forum section: electronics / general

author: logictom
author_rank: Unknown
timestamp: June 22, 2011, 09:22:55 am
content: I've got my hands on a pressure sensor but can't find any info online, the marking reads PP01 KY9G, sorry for the terrible photo but I only have my phone to hand.It's 6 pins with the sensor similar to the second image but located on the bottom.I've tried entering it into google and findchips but no luck so far....Thanks.
Car voltage stabalizer - increased HP, stereo clarity and so on. (lol) - Page 1
Forum section: electronics / general

author: ShiftPlusOne
author_rank: Regular Contributor
timestamp: June 20, 2011, 06:29:14 am
content: I laughed when I saw this, but is there anything to it?http://adhoc-tech-sci.com/pd-vs-aa.html

author: Unknown
author_rank: Unknown
timestamp: June 20, 2011, 07:28:40 am
content: I'll use one with my electric superchargerhttp://www.gaprojects.com/supercharger/supercharger.htmgazillions of regulated horsepowers! UV shakes his head in amazement at things people will bill buy.

author: A-sic Enginerd
author_rank: Regular Contributor
timestamp: June 20, 2011, 05:25:52 pm
content: As one being first a gearhead and second an electronics nerd.....I think I need to wash my eyes after looking at that. They feel soiled.

author: Zero999
author_rank: Super Contributor
timestamp: June 20, 2011, 05:42:48 pm
content: What a rip-off.It's a myth that large capacitors help to improve the audio and a downright lie that connecting them to the cigarette lighter socket will do anything.

author: ShiftPlusOne
author_rank: Regular Contributor
timestamp: June 21, 2011, 02:35:13 am
content: Yeah, I was baffled by how anyone could fall for that.

author: Joshua
author_rank: Regular Contributor
timestamp: June 21, 2011, 03:43:42 am
content: You had me at 'Volt-au-miter'I bet he actually does try and solder it to the battery. I do not feel like the man in the video is to blame, but the man who sold it, who surely knows he is scamming people. They are the kind of people that ruin stuff for the honest people

author: ShiftPlusOne
author_rank: Regular Contributor
timestamp: June 21, 2011, 05:03:42 am
content: Nuh, don't get me wrong, nothing against M13, I just found the 'gadget' amusing.
Is it just me? - Page 1
Forum section: electronics / general

author: Joshua
author_rank: Regular Contributor
timestamp: June 20, 2011, 03:34:50 am
content: Is it just me being crazy, but since the new forum was put online, the karma buttons used to say 'applaud' and 'smite'. Now they say 'Thumbs up' and 'DOWN'Is it just me that say something really weird. I personally like the applaud/smite.Joshua

author: insurgent
author_rank: Regular Contributor
timestamp: June 20, 2011, 04:45:11 am
content: IMHO the thumbs up/down are more in line with Dave and his videos. Unfortunately there are no thumbs up/down emoticons <hint, hint>

author: Joshua
author_rank: Regular Contributor
timestamp: June 20, 2011, 04:56:32 am
content: True. Didn't think of it that way.

author: Mechatrommer
author_rank: Super Contributor
timestamp: June 20, 2011, 05:41:20 pm
content: i think it will be neater "Thumb Up" and "Thumb Down" or "Down". the all cap too "obvious" in my eye while reading/posting.

author: Hypernova
author_rank: Unknown
timestamp: June 21, 2011, 03:27:06 am
content: How about "Booo" and "Wooo"
waterfall printer _ Hyundai Australia  - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: June 19, 2011, 11:36:58 pm
content: An lovely subject for the ones who are not afraid to become wet.

author: Unknown
author_rank: Unknown
timestamp: June 19, 2011, 11:56:17 pm
content: Original and beautiful. Thanks for this, here is some karma lol.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: June 20, 2011, 12:56:01 am
content: Quote from: Alex on June 19, 2011, 11:56:17 pmOk this is another one just for you.Different but good one.

author: Unknown
author_rank: Unknown
timestamp: June 20, 2011, 01:14:05 am
content: Oh, too kind.He needs to put one onthe floor and one on the ceiling, then jump inside...But you need to work harder for your karma.Here (similar to first post):

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: June 20, 2011, 01:24:20 am
content: I know my karma all ready, one room full of DMM ..lol

author: Unknown
author_rank: Unknown
timestamp: June 20, 2011, 01:26:09 am
content: A world of oranges and lemons...
Juror jailed for 8 months or community service discovering the court on Facebook - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: June 17, 2011, 06:56:16 am
content: I have read a juror was jailed for 8 month or community service after discovering the defendants on Face Book and made contact with them in London, U.K. The juror was biased for finding this out on Face book. It seems book is more than recognizing faces. It can get one into many troubles. What happened to My Space?Surf here about the unusal contact that costs this individual 8 months in jail in the U.K.:http://uk.news.yahoo.com/facebook-juror-jailed-eight-months-104252467.htmlLawsen

author: baljemmett
author_rank: Unknown
timestamp: June 17, 2011, 10:46:07 am
content: Quote from: Lawsen on June 17, 2011, 06:56:16 amYes, or almost so -- the juror contacted one of the defendents who had already been acquitted, and then went on to share details of the jury's deliberations on the matter of her co-defendents. Cue one nice expensive mistrial.QuoteWell, in this case the phone book could probably lead to exactly the same sort of problem. The root cause of the juror being jailed for contempt of court is her own blatant stupidity; seriously, how vacant do you have tobeto think getting in touch with someone you're trying is a good idea? Especially given that some of the messages the juror sent included advice like "don't tell anybody about our conversation, it could lead to a mistrial"...QuoteAlways struck me as a glorified guestbook with all the tasteful aesthetic qualities of the worst Geocities pages from the '90s. Was astounded when Murdoch decided it was worth buying for big money; Facebook was considerably more useful as a 'social' tool (*waves to Simon*), but at the time was closed-access -- only allowing registrations from affiliated university e-mail addresses, etc. I guess it gained a reputation as a 'cut above' MySpace, and then when it opened up to Joe Public the network effect carried it forwards.

author: Time
author_rank: Frequent Contributor
timestamp: June 17, 2011, 02:21:39 pm
content: Why don't you cite something? You are just posting stuff like we are supposed to take your word for it.

author: sacherjj
author_rank: Frequent Contributor
timestamp: June 17, 2011, 03:31:07 pm
content: Quote from: Time on June 17, 2011, 02:21:39 pmHere you go

author: Unknown
author_rank: Unknown
timestamp: June 18, 2011, 04:16:34 pm
content: Quote from: sacherjj on June 17, 2011, 03:31:07 pmIt's the duty of the person who posts the news to cite sources, not the duty of the readers to track them down.
TI MSP-EXP430FR5739 FRAM dev board for 14.50 usd (free shipping) - Page 1
Forum section: electronics / general

author: Polossatik
author_rank: Frequent Contributor
timestamp: June 18, 2011, 02:35:34 pm
content: As seen onhttp://hackaday.com/2011/06/17/devboard-deal-ti-experimenter-board-for-15-50-off/You can use the coupon code MSP430_FRAM to get 50% off of ONE unit /order until 1500 are sold or 31 July.The board is normally 29 usd , more info herehttps://estore.ti.com/MSP-EXP430FR5739-MSP-EXP430FR5739-Experimenter-Board-P2430.aspxjust mentioning if anyone cares, could not find apost that mentioned it yetedit: sorry, forgot about the new subsections, maybe better inhttps://www.eevblog.com/forum/index.php?board=11.0
4 layer prototypes? - Page 1
Forum section: electronics / general

author: ToBeFrank
author_rank: Regular Contributor
timestamp: June 10, 2011, 05:07:24 pm
content: I need to make my design smaller, and the only way to do that is with a 4 layer pcb. I've seen the threads about where to get pcb prototypes made cheaply, but cheap appears to only apply to 2 layer boards. Everywhere I've looked it's at least $200 for a small 4 layer prototype. Where do you guys get your 4 layer prototypes made and what do they cost if you don't mind me asking?

author: sacherjj
author_rank: Frequent Contributor
timestamp: June 10, 2011, 05:21:07 pm
content: You will want to jump on the DorkbotPDX order.http://dorkbotpdx.org/wiki/pcb_orderNext 4 layer board order goes in on June 20th. $10 per sq/inch for 3 boards. Any color as long as you like purple.I haven't received my 2 layer boards from the order yet, but everyone seems to love the quality of the boards. They are pretty high spec.This doesn't make sense for large boards, but is a great service for getting small boards prototyped.

author: slburris
author_rank: Frequent Contributor
timestamp: June 11, 2011, 12:40:09 am
content: You didn't say what the total area of your board is and what qtyyou want.In my experience, no one PCB maker has the best prices -- it reallydepends on a lot of factors.What are your trace/space requirements?Scott

author: ToBeFrank
author_rank: Regular Contributor
timestamp: June 13, 2011, 08:26:07 pm
content: Quote from: slburris on June 11, 2011, 12:40:09 amDefinitely will be smaller than 6 square inches, hopefully I can get it smaller than that. First run will be a prototype so quantity can be as small as 1, but basically whatever is cheapest.QuoteI've generally been designing for maximum compatibility with manufacturers so I haven't needed minimums. I suppose if I really get cramped for space I should look at 6/6.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: June 13, 2011, 09:41:00 pm
content: Quote from: ToBeFrank on June 13, 2011, 08:26:07 pmI don't recall ever seeing a 4 layer service with rules bigger than 6/6

author: gregariz
author_rank: Frequent Contributor
timestamp: June 17, 2011, 08:15:19 pm
content: www.batchpcb.comsparkfun set this up iirc. its $8 sq/in. I used them alot and a 4 layer job some time ago and they were good.Only issue can be that the 4 layer panel doesnt fill up fast so you may have to wait. Otherwise panelize a job yourself and send it directly into goldphoenix.biz (this is who batch use iirc) and I suspect you may come out with the entire panel for about 200 but it will depend on screens colors and tolerances.

author: slburris
author_rank: Frequent Contributor
timestamp: June 17, 2011, 09:02:35 pm
content: When you get up to qty 10, you can get boards for $23.70each from pcbex.com. 6 mil trace/space 10 day turn.I've ordered two layer boards from them, but not four layer.They have a US office and the boards and made and shipppedto you from China.Scott

author: onemilimeter
author_rank: Frequent Contributor
timestamp: June 18, 2011, 11:29:37 am
content: Quote from: slburris on June 17, 2011, 09:02:35 pmQuite attractive...
Assert TRST in JTAG - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: June 21, 2011, 05:11:29 am
content: The manual I'm reading says:The DBGTAP is reset either by asserting DBGnTRST , or by clocking it while the DBGTAPSM is in the Test-Logic-Reset state.What does assert means hereThanks for your help !

author: jahonen
author_rank: Super Contributor
timestamp: June 21, 2011, 05:56:02 am
content: Assert means that signal is brought to active level. Guessing from the name, DBGnTRST is asserted when it is low.Regards,Janne

author: DavidDLC
author_rank: Frequent Contributor
timestamp: June 21, 2011, 06:34:35 am
content: Got it, and I think is active low.Thanks.
Father's Day is celebrated on the third Sunday of June - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: June 18, 2011, 02:55:40 am
content: According to my crystal ball there is a father in Australia, who will celebrate on the first Sunday of September.Even so my best regards to the ones who will celebrate in the next 24 hours .http://en.wikipedia.org/wiki/Father%27s_Day

author: sacherjj
author_rank: Frequent Contributor
timestamp: June 18, 2011, 04:05:51 am
content: This is a weird one for me. This is the first since Dad died (almost 2 months ago now).I was getting an Anniversary card and stopped at the Father's Day isle. Found the perfect card, but I didn't need to buy it.
Jim Wiliams Dies - Page 1
Forum section: electronics / general

author: blackdog
author_rank: Frequent Contributor
timestamp: June 14, 2011, 08:32:21 pm
content: Sad news....http://www.edn.com/article/518496-Analog_guru_Jim_Williams_dies_after_stroke.phpI wil mis his work...Bram

author: firewalker
author_rank: Super Contributor
timestamp: June 14, 2011, 08:35:04 pm
content: R.I.P.

author: Mechatrommer
author_rank: Super Contributor
timestamp: June 14, 2011, 10:59:47 pm
content: saw this earlier. but cant open the link to confirmhttps://www.eevblog.com/forum/index.php?topic=3748.0one good person gone. R.I.P.

author: hannobisschoff
author_rank: Contributor
timestamp: June 15, 2011, 03:34:23 pm
content: That photo in his lab shows he was a typical electronics guy. May he rest in peace. I really haven't ever heard of him, but a loss to the industry is a loss to all of us.

author: qno
author_rank: Frequent Contributor
timestamp: June 16, 2011, 09:40:08 am
content: I am sorry to hear that.I liked his books, Art and Science of Analog Circuit Design etc, and his description of the Monkey circuit.Condolences to his family.

author: hannobisschoff
author_rank: Contributor
timestamp: June 17, 2011, 09:40:11 am
content: Take a look at this link if you want to know what actually happened in silicone valley.http://www.edn.com/blog/Anablog/40759-Pranking_bosses_friends_and_competitors_.php

author: Mechatrommer
author_rank: Super Contributor
timestamp: June 17, 2011, 02:23:05 pm
content: funny! reminds me of 555 easter egg.
What's the use of these golden pads on PCB? - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: June 15, 2011, 09:09:25 pm
content: Recently I notice "golden pad with distributed holes" (as circled) on several product PCBs. What's the use of these pads? Thanks.

author: johnmx
author_rank: Frequent Contributor
timestamp: June 15, 2011, 10:19:16 pm
content: Those are not pads but power traces. Normally they are used to spread the heat and/or conduct high current (very low ohmic trace).

author: hannobisschoff
author_rank: Contributor
timestamp: June 17, 2011, 11:31:15 am
content: So is that actual gold, or some sort of alloy?

author: Psi
author_rank: Super Contributor
timestamp: June 17, 2011, 12:25:09 pm
content: Probably just standard immersion gold.Real gold, just very thin. I think it's only like 40 atoms thick but don't quote me.
Any difference between Authorized vs Unauthorized Rigol 1052e? - Page 1
Forum section: electronics / general

author: saturation
author_rank: Super Contributor
timestamp: June 16, 2011, 05:46:59 pm
content: The purpose of this poll is to examine whether there is any differences in quality between Rigol 1052e purchased from Rigol's authorized dealers, or buying it from an unauthorized dealer.The reason for buying unauthorized is often the substantially lower price, even when you add shipping.A problem is anything that keeps the scope from working properly, in your opinion.This does not include problems after the scope has been modded or hacked.Feel free to detail the problem on the thread.

author: Lightages
author_rank: Unknown
timestamp: June 16, 2011, 06:02:38 pm
content: I live in Chile and the chances of getting after sales service here are probably less than getting service from China. I purchased mine from DX and except for the long wait all was fine.
worst product ever made  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: June 14, 2011, 06:32:54 pm
content: now we dave talks about bad product design but this takes the biscuit

author: Vertigo
author_rank: Regular Contributor
timestamp: June 14, 2011, 07:47:42 pm
content: lol something very similar used to be advertised in the back of comic books as a sort of spy device.

author: Simon
author_rank: Unknown
timestamp: June 14, 2011, 07:53:55 pm
content: criky, a product that needs a sales pitch of over 4.5 minutes ? I was getting bored after 60 seconds
Robot wranglers soundoff & the state of hobby robotics - Page 1
Forum section: electronics / general

author: Vertigo
author_rank: Regular Contributor
timestamp: June 13, 2011, 09:09:42 am
content: where mah dogs at?i am just starting my electronics/robotics hobby, and i'm looking to meet people who build robots,especially small ones, are there any on this forum?also:i been looking for an active BEAM community, and outside of a newsgroup (i hate those) everything seems to beas dead as good taste.so, how do u feel about the state of hobby robotics present and future?what are people doing with their robot hobby these days, and where do you think it will go from here?

author: Vertigo
author_rank: Regular Contributor
timestamp: June 14, 2011, 06:56:57 am
content: dammit, where the 'F' are you people??seriously, anybody know of ANY BEAM robotics community with a pulse outside of yahoo?
My first (kinda) Project! - Page 1
Forum section: electronics / general

author: Joshua
author_rank: Regular Contributor
timestamp: June 13, 2011, 02:51:35 am
content: Alright, so I've been playing with electronics for more than a couple of months, but just built stuff on a breadboard and took it down, and built something else, took it down, repeat... I've been trying to learn about this stuff so that explains my lack of tangible output.Anyway, so I'm trying to become more experienced with arduino so I can do some really cool things, and I was sick of having my Uno board next to my breadboard with a bundle of wires connecting the two, so I decided to built my own usb-serial adapter based on the FTDI FT232RL. So I ordered the parts and built one according to sparkfun's schematic. The main difference is that, on their's, they had a solder jumper to select between 5V and 3.3V. I didn't like that, so I put a small switch in from my junk box.This is my first perf-board layout so go easy on meWell actually I would prefer that you tell me what I did wrong so I can improve next time. (I.E.constructivecriticism requested. )Here are the pictures...You probably noticed that I raised the SSOP breakout board up off the perf board. This is so I could route wires underneath for a cleaner layout.I have seen alot of people's perfboards, and the solder bridges underneath. I always thought they just made the connection across pads with just the solder. I discovered very quickly that this wasn't the case, and that you actually bend the leads over and then solder.Of course, It didn't work at first.I then discovered, while troubleshooting, that I had forgot to connect the USB D- and D+ lines to the FT232. I fixed that with the two red wires, that don't look as nice as the others. That kind of irritated me because I like stuff to look nice. It works now though! I just got done programming my first arduino program with it. YAY!Anyway, tell me what you think!Joshua

author: dimlow
author_rank: Frequent Contributor
timestamp: June 13, 2011, 06:21:18 am
content: Good effort, but would suggest you buy some flux, will make soldering much easier and it will look neater, just how you like it.

author: Joshua
author_rank: Regular Contributor
timestamp: June 14, 2011, 04:10:29 am
content: Quote from: dimlow on June 13, 2011, 06:21:18 amWell I have a flux 'pen'. The kind where you depress the pen and it comes out like a sharpie. I guess I don't know how or when to use it. Is there any information around?

author: dimlow
author_rank: Frequent Contributor
timestamp: June 14, 2011, 05:43:24 am
content: The SSOP looks a little dry and could have done with the use of the flux pen, the other joints look fine.

author: stl
author_rank: Contributor
timestamp: June 14, 2011, 10:48:07 am
content: I know for a fact that soldering on this boards isn't easy, to make it look good takes forever... For a first project I think it's fine, next project consider using a different type of prototype board.

author: hannobisschoff
author_rank: Contributor
timestamp: June 14, 2011, 01:01:44 pm
content: LOL, in the days before Internet, young aspiring hobbyists would've had to struggle it out.
Pakistani arrest the Pakistani landlords that rented a house to the CIA. - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: June 17, 2011, 07:05:15 am
content: Pakistani authorities arrested the landlord, that rented a house a few blocks from Bin Laden's house to the U.S.A. CIA in Abbottabad, Pakistan. There were no government officials involved in the detained individuals to be investigated into their role in the CIA and other questionable activities, that helped lead to the capture and execution of the infamous terrorist group leader that disappeared for ten years. The CIA have been casing the house in Abbottabad for a year or two years as information revealed.Surf here:http://www.guardian.co.uk/world/2011/jun/15/pakistan-arrests-five-spying-ciahttp://www.cleveland.com/world/index.ssf/2011/06/cia_helpers_in_pakistan_arrest.htmlLawsen
Source for small metal Electronic Enclosures  - Page 1
Forum section: electronics / general

author: gboop
author_rank: Newbie
timestamp: June 09, 2011, 02:42:34 am
content: I am looking for small metal electronic enclosures for a circuit board. Looking for about 6 x 5 inches in size and three inches high. Hoping to find a source at $3 to $4 US for small quantities. I am located in the U.S. Any ideas for a good source? I am finding the pricing at the normal distributors such as Digikey, etc. too pricey.Thanks.

author: sacherjj
author_rank: Frequent Contributor
timestamp: June 09, 2011, 02:49:28 am
content: For a metal enclosure at that price, you are going to have a hard time.I use allelectronics.com for boxes. They have some Aluminum cast boxes that are nice and cheaper than other places. 5.23"x5.3"x2" for under $10 is not bad. I doubt you will find a metal box that size for those prices. For $3-4, you have to go with plastic.

author: Armin_Balija
author_rank: Regular Contributor
timestamp: June 09, 2011, 02:51:21 am
content: Even with plastic enclosures of that size you'd be hard pressed to find them at $3-4. I use digi-key for anything electronics related usually unless I can find a better deal.

author: gboop
author_rank: Newbie
timestamp: June 09, 2011, 03:02:01 am
content: This is exactly the dilemma I am facing. Spec'ed the solution for a plastic case at $3 to $4 which I can find... and then found out that metal was wanted. Blows the cost basis out of the water. Hoping to find something in metal closer to $4 than $10.

author: DavidDLC
author_rank: Frequent Contributor
timestamp: June 09, 2011, 03:19:28 am
content: How many do you need ?

author: gboop
author_rank: Newbie
timestamp: June 09, 2011, 03:40:50 am
content: I will need 10 for a proto run and then another 80 to 120 over the following 12 months. The numbers are not huge.

author: Armin_Balija
author_rank: Regular Contributor
timestamp: June 09, 2011, 05:28:35 am
content: How much would it cost to buy sheet metal? If it were me I'd use a vice and a blowtorch and hammer myself an enclosure..or even cut one up and build one.

author: sacherjj
author_rank: Frequent Contributor
timestamp: June 09, 2011, 01:01:53 pm
content: Quote from: gboop on June 09, 2011, 03:02:01 amThat sounds like a change to the spec and needs a change request, including the associated costs. If they change the spec, they get to pony up the money. Can't get something better for nothing.

author: gboop
author_rank: Newbie
timestamp: June 14, 2011, 02:55:03 am
content: Quote from: sacherjj on June 09, 2011, 01:01:53 pmThis is the path I am pursuing. Looks like we will have some success.
Anybody used chip1stop.com? - Page 1
Forum section: electronics / general

author: elCap
author_rank: Regular Contributor
timestamp: June 13, 2011, 05:38:07 am
content: Hi,Anybody here usedhttp://www.chip1stop.com/?It's a Japanese International online distributor of electronics. It would be good to use a Japanese online shop for me but I guess it will not be this one...First impression are:+ Many parts in database- Expensive (even by Japanese standards. Examples: Fluke 87V $660, or you can rent one from them for $68/month... LM311P $2.5, digikey $0.53. MatrixOrbital LCD 20x4 LK204-25 $129, digikey $74.65)- Have to be a member to browse for datasheet (it's free but disturbing I think)- Many items have Japanese description, not very international- The help feature (by clicking on [?]) many times return error- Parametric search is a mess due to badly maintained database. (For instance try looking at character LCD displays.. I don't know when 8MHz became a font color!? Or how many characters is 1.2mcd?)Anyway I'll try it some more.

author: Bored@Work
author_rank: Super Contributor
timestamp: June 13, 2011, 06:12:48 am
content: Quote from: elCap on June 13, 2011, 05:38:07 amYou did seehttp://www.chip1stop.com/support.do?cat=000002&itm=000001QuoteI have more than enough experience with distributors who don't want to sell to individuals. If it is beneath them to serve individual customers they are typically shit and hate to provide service even to those they graciously sell to.

author: elCap
author_rank: Regular Contributor
timestamp: June 13, 2011, 07:04:02 am
content: OK! I didn't see. Thanks for point it out. Really bad company then.But it's a typical Japanese company, over priced and strange rules...
Joke of a PSU - Page 1
Forum section: electronics / general

author: Ferroto
author_rank: Frequent Contributor
timestamp: June 13, 2011, 10:57:47 pm
content: This guy got an old 4 amp PSU with possibly the most dodgy construction I've seen in awhile.

author: Psi
author_rank: Super Contributor
timestamp: June 13, 2011, 11:29:43 pm
content: it was made in like 1982, there were no safety standards, stuff like that was common.
VOLTCRAFT VC-86  pen type Multimeter -  sympathetic !  - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: June 12, 2011, 02:39:25 am
content: Personally even if I totally dislike the small (pen type) DMM,this one attracted my attention because of a single detail in the design of it.This little sucker has an finger guard on the body of it..An true Smart idea the list that I can say.And a second nice detail, is the negative lead, looks also well made,in both ends.Smart battery compartment + Add on ultra long tip + rubber crock ( Fluke style) ..Check the pictures ... on the link .Yes this is finally one "sympathetic" small one.http://www.conrad.de/ce/de/product/121512/Voltcraft-VC-86-DMM/?ref=reco