hybridfree/eevblog-posts huggingface dataset:
Fantastic cybernetic dog, must see! - Page 1
Forum section: electronics / general

author: Wartex
author_rank: Frequent Contributor
timestamp: August 16, 2011, 10:54:42 pm
content: http://cyberneticzoo.com/?p=5358Does anyone know anything about it?

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: August 16, 2011, 11:04:24 pm
content: This is a dead web link.Next time say more about it as description.

author: Wartex
author_rank: Frequent Contributor
timestamp: August 16, 2011, 11:33:34 pm
content: Quote from: Kiriakos-GR on August 16, 2011, 11:04:24 pmYour internet sucks. The link is up. You probably clicked on my signature.

author: IanB
author_rank: Super Contributor
timestamp: August 17, 2011, 12:09:53 am
content: It looks very steampunk.

author: Wartex
author_rank: Frequent Contributor
timestamp: August 17, 2011, 12:40:13 am
content: Quote from: IanB on August 17, 2011, 12:09:53 amIt's from 1950s. The aluminum cups on the back appear to be photocells for remote control. I'd love to see this in action. I don't understand why they don't fix the batteries and power it up.

author: tekfan
author_rank: Frequent Contributor
timestamp: August 17, 2011, 08:20:40 pm
content: That's the coolest thing I've seen in a while. It looks like something from a 50's sci-fi film.Imagine having about 20 of these in the front yard attacking the postman. I wonder if there are any vacuum tubes in that thing.Soooooo much cooler than:

author: Frangible
author_rank: Regular Contributor
timestamp: August 17, 2011, 10:29:21 pm
content: Looks like a very nice steampunk sculpture made up of bits and bobs from old electrical and automotive equipment. Very cool - but not particularly "cybernetic".
Electronics Australia Magazine - Page 1
Forum section: electronics / general

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: August 07, 2011, 03:31:05 pm
content: I have been digging around my place lately and uncovered some dusty old EA magazines... and I was like, "OMG Moffat's Madhouse, the dude with the monocle... how could I forget...?" I practically grew up with these mags in the 90s. Apparently EA was the longest running electronics publication in Australia, until they sadly trashed it 10 years ago. Would be nice if could find the earlier EA mags, particularly the vintage ones during the vacuum tube era.

author: vk6zgo
author_rank: Super Contributor
timestamp: August 07, 2011, 04:02:15 pm
content: "Silicon Chip" now own the rights to the old EA & RTV &H/R&H magazines,so you might be able to get some stuff from them.For the early RTV&H/R&H stuff,they can supply a DVD which contains all issues.VK6ZGO

author: EEVblog
author_rank: Unknown
timestamp: August 07, 2011, 10:55:08 pm
content: Last I spoke with Leo about 6 months back, the plans for the EA DVD set were on the back burner.A shame, because I think there would be a big demand for it.Sadly Tom Moffat passed away a few years back.Dave.

author: gregariz
author_rank: Frequent Contributor
timestamp: August 08, 2011, 12:30:28 am
content: I'd expect there would be demand for a DVD of the old ETI and AEM stuff as well, at least amongst us who used to read those. Once upon a time RCS radio were advertising that they were working on an AEM CD/DVD but it seems to not have materialized. I notice Bob Barnes at RCS died a month ago so I guess that may be the end of that.I still have Tom Moffat's 'listening post' kit that I just never quiet got around to finishing....

author: johnboxall
author_rank: Unknown
timestamp: August 08, 2011, 10:17:32 am
content: Quote from: EEVblog on August 07, 2011, 10:55:08 pmThat's a shame, I would have pre-ordered an EA DVD without hesitation. All that history, knowledge, and fascinating advertising."Your Computer" magazine would come a close third after ETI.

author: EEVblog
author_rank: Unknown
timestamp: August 08, 2011, 11:40:59 am
content: Quote from: tronixstuff on August 08, 2011, 10:17:32 amYeah, I'm not entirely sure why he's gone cold on it.Last I spoke to him about he mumbled about various stuff, I can't remember exactly. But I got the impression it might still happen one day.SC have about 15K subscribers, at say $50 a DVD, that's $750K.I'm not sure exactly how many would buy, but I'm guessing it would be at least half, given that a sub is now $100/year.Dave.

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: August 08, 2011, 03:22:06 pm
content: I'd definitely get the DVD if there is one. I guess, getting all those old mags digitised must be a monumental effort.

author: johnwa
author_rank: Frequent Contributor
timestamp: August 14, 2011, 11:01:45 am
content: Hi AntiProtonBoy,I have a reasonably complete duplicate set from approx 1965-1972 and 1978-1985. I have been trying to find a good home for them. You can have them for the cost of postage if you like.John
Tek 2225 Service Manual - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: August 10, 2011, 11:46:32 am
content: Has anyone got or know of a link to the Tek 2225 service manual?ThanksDave.

author: Unknown
author_rank: Unknown
timestamp: August 10, 2011, 06:27:00 pm
content: I'm not aware of a free source. For $10 availablehereandhere. Both deliver much better scans (resolution, dynamic range, schematics not split up) than usually available for free, although they cost a few bucks. The latter has more intrusive watermarks and less responsive.

author: djsb
author_rank: Super Contributor
timestamp: August 11, 2011, 07:04:29 pm
content: I have a full PRINTED manual. I'll have a look for it over the weekend. Then I will be able to tell you where I bought it from.You should be able to get a scanned copy somewhere. If not let me know what info you need.David.

author: tekfan
author_rank: Frequent Contributor
timestamp: August 12, 2011, 09:20:34 pm
content: Quote from: EEVblog on August 10, 2011, 11:46:32 amThere's almost all of the manuals for any Tek scope on this site.http://bama.edebris.com/manuals/tek/And for the 2225http://bama.edebris.com/manuals/tek/2225/Are we going to see a video of the scope soon?

author: Unknown
author_rank: Unknown
timestamp: August 12, 2011, 09:23:56 pm
content: Quite sure the one on BAMA is the operations manual, not service.

author: tekfan
author_rank: Frequent Contributor
timestamp: August 12, 2011, 09:31:48 pm
content: Yep. Sorry, didn't check. More searching required.

author: EEVblog
author_rank: Unknown
timestamp: August 12, 2011, 11:54:06 pm
content: Quote from: djsb on August 11, 2011, 07:04:29 pmThanks.Looks like the scanned copy is the go. Cheap and available from several sources.Dave.

author: w2aew
author_rank: Super Contributor
timestamp: August 14, 2011, 03:36:18 am
content: Sounds like you're right Dave. I even checked the "inside sources" and haven't been able to find a factory electronic copy.
AGILENT HP 54111D 500MHz schematic - Page 1
Forum section: electronics / general

author: img
author_rank: Regular Contributor
timestamp: August 09, 2011, 12:39:44 pm
content: I've got an HP 54111D 500MHz in need of repair.If someone has the schematic, would you consider sharing?If you have repaired one of these in the past, I'd be grateful for more info.

author: amspire
author_rank: Super Contributor
timestamp: August 09, 2011, 12:48:27 pm
content: try this link:http://128.238.9.201/~kurt/manuals/manuals/HP%20Agilent/

author: img
author_rank: Regular Contributor
timestamp: August 09, 2011, 01:41:19 pm
content: WOW, what a magic link!!!!Thank you!

author: vk6zgo
author_rank: Super Contributor
timestamp: August 10, 2011, 06:15:49 am
content: I've always found that the problem of fixing a non-functional Oscilloscope is that you need a functional one to fault find it!Great website,by the way!VK6ZGO

author: img
author_rank: Regular Contributor
timestamp: August 10, 2011, 06:52:54 am
content: Quote from: vk6zgo on August 10, 2011, 06:15:49 amIn fact yes, this is the current problem I am trying to resolve.

author: rf-loop
author_rank: Super Contributor
timestamp: August 11, 2011, 08:10:14 am
content: Also these manuals can find directly from Agilent.http://tinyurl.com/3go5k72Btw I have also one 54111DI have repaired its input attenuators and also some other small things but main power is still fail. Special control IC is extremely difficult to find and no data can find. (if you know data for this control chip in main power please share this info..Digital and analog secondary power units are ok.I have drive it with external power source. Working nice.
A Good Deal? $400 for a Tek TDS 1002B. - Page 1
Forum section: electronics / general

author: Bren
author_rank: Contributor
timestamp: August 11, 2011, 04:37:13 pm
content: So I'm browsing the local craigslist when I see some guy selling two Tektronix TDS 1002B for $400 each. They are in pretty good condition. This a fair price? Other suggestions? Any one have one and want to share thier experience?
Scaling up from prototype to production run - Page 1
Forum section: electronics / general

author: joegtp
author_rank: Contributor
timestamp: August 09, 2011, 07:31:57 pm
content: I finished my prototype with the help of ITead Studios, but now I'm ready to scale it up. I would like to make an initial run of 100 units. I have a main board (2"x0.75") with 20 or so SMT components. I also have 5 additional boards (0.2"x1.2") per unit that has 5 through hole components and 1 SMT. I'm having a tough time finding a PCB manufacture that is cheaper than ITead even though I want 500 of one board and 100 of the other. What am I missing? What should I be looking for? I would also love to have them assembled but those prices are even more ridiculous.

author: Jon Chandler
author_rank: Frequent Contributor
timestamp: August 09, 2011, 07:43:40 pm
content: Try PCBcart. I've had good luck with larger orders there.
I need a workshop! - Page 1
Forum section: electronics / general

author: GeoffS
author_rank: Unknown
timestamp: August 10, 2011, 04:35:43 am
content: Or at least a workbench. I've a couple of electronics projects that I can't get started on as I have no where to work!I moved from my last place about 3 months ago and since then, I've been house sitting for a friend. The place has plenty of space but it's all ouside! There is a workshop for woodworking but it doesn't have any power.I'm looking for a place to rent but that will be another 5 or 6 weeks. Looking forward to being able to set up the workbench again as well as get the metalworking tools set up in the shed.There, I feel better now....

author: PeterG
author_rank: Frequent Contributor
timestamp: August 10, 2011, 04:41:57 am
content: I feel you pain....Regards

author: EEVblog
author_rank: Unknown
timestamp: August 10, 2011, 04:52:16 am
content: What sort of space do these projects need?Very common at companies to have an entire lab on your work desk.Dave.

author: GeoffS
author_rank: Unknown
timestamp: August 10, 2011, 05:39:28 am
content: Quote from: EEVblog on August 10, 2011, 04:52:16 amI'm not currently working and when I do, it's in IT so there's no electronic equipment to use.The projects are just personal ones so just a small workbench is needed. One task is to build an OBD interface for my van. Another task is to finish off a digital readout (DRO) for my lathe. The DRO is actually finished but needs some troubleshooting but the oscilloscope is in storage.

author: Unknown
author_rank: Unknown
timestamp: August 10, 2011, 05:54:08 am
content: Quote from: GeoffS on August 10, 2011, 05:39:28 amI'm in similar but maybe not so space constrained circumstances. Bunnings fold-up trestle tables doing an admirable job. They have them in bridge table size too if your really cramped.In an old copy of ETI there was a design for an electronics workspace with solder station, part's storage etc, that you could hang on the back of a door when not in use. But I guess with no woodwork facilities you'd be screwed to build it presently.

author: img
author_rank: Regular Contributor
timestamp: August 10, 2011, 06:56:28 am
content: How about a loooooooooong power cord from the house to the woodworking shed to get electricity in?

author: GeoffS
author_rank: Unknown
timestamp: August 10, 2011, 07:48:57 am
content: It's too cold to work out in the shed even if I do run electricity out there ( I'd have to get a 30 metre extension cord) I'd rather have somewhere to work inside where it's nice and warm.I can't make anything too permanent as I'm only looking after the house.It's all incentive to find a place of my own.

author: Mechatrommer
author_rank: Super Contributor
timestamp: August 10, 2011, 12:05:28 pm
content: Quote from: GeoffS on August 10, 2011, 04:35:43 amwhat space area "inside" are we talking here? a 3'x5' workbench wont fit?

author: Hypernova
author_rank: Unknown
timestamp: August 10, 2011, 04:03:54 pm
content: Quote from: GeoffS on August 10, 2011, 07:48:57 amYou'll be plenty warm once you reach the red-faced-shouting-whywon'tyouwork phase of your project.
Ultrasonic cleaners - Page 1
Forum section: electronics / general

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: August 08, 2011, 05:30:42 am
content: Does somebody have experience with this seller and product he seels?http://cgi.ebay.com/2-0-Liter-1-2Gallon-Digital-Heated-ULTRASONIC-CLEANER-/320709657525?pt=LH_DefaultDomain_0&hash=item4aabc903b5

author: Precisiontools
author_rank: Regular Contributor
timestamp: August 08, 2011, 06:04:38 am
content: Don't know anything about the seller but have been using what looks like a similar cleaner (mine might be a bit smaller volume) for quite a few years now, and even though I have had nothing really to compare it to, it has done everything I have asked of it in the time I have had it.

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: August 08, 2011, 07:06:46 am
content: Well the seller is obviously ok, im just trying to determine the quality of the product. Now i understood i formulated the question wrong.Yes yours seems similar and is probably 1.3 L/50 W, Chinese anyway copy from each another.What worries me is it really 80 W ?

author: img
author_rank: Regular Contributor
timestamp: August 08, 2011, 08:01:36 am
content: I have heard that these stress the PCBs - is that an old wives' tale?
Thermocouple connectors - Page 1
Forum section: electronics / general

author: Hypernova
author_rank: Unknown
timestamp: August 04, 2011, 09:04:25 am
content: I'm building a reflow oven controller for my toaster oven, however I'm having trouble finding connectors for the probes. Basically I want one of those sockets that would take your generic K-type probes that comes with multimeters. I'm sourcing my parts from mouser only (only they have some of the stuff I want) and I can't seem to find any equivalents like below from them.http://www.newark.com/jsp/search/productdetail.jsp?SKU=01H0905&CMP=AFC-OP&CMP=AFC-OPAnyone got a suggestion from mouser's stock? Or would any generic blade connector socket work?

author: plesa
author_rank: Frequent Contributor
timestamp: August 04, 2011, 10:40:26 am
content: We are using the Omega stuff for thermocouples.http://www.omega.com/toc_asp/sectionSC.asp?section=G&book=temperature

author: Hypernova
author_rank: Unknown
timestamp: August 04, 2011, 12:41:51 pm
content: I know I can get it from them but my problem is I need to cut the shipping cost down and that means getting everything from mouser who don't carry Omega parts.
were to buy agilient multi meters - Page 1
Forum section: electronics / general

author: insomniaaaaa
author_rank: Newbie
timestamp: August 03, 2011, 07:53:44 pm
content: hi just wondering were to buy agilient multi meters i am in ireland and see alot of good comments on this sight about them

author: Unknown
author_rank: Unknown
timestamp: August 03, 2011, 08:07:22 pm
content: How about the distributors you find when you click on 'how to buy' on the Agilent product page for the meter?

author: Ronnie
author_rank: Regular Contributor
timestamp: August 05, 2011, 12:15:53 am
content: Agilent multimeters like 34401A & 34410A are available at RS Irelandhttp://radionics.rs-online.com/web/c/?sra=oss&searchTerm=34401

author: img
author_rank: Regular Contributor
timestamp: August 05, 2011, 06:44:52 am
content: Don't know about Ireland, but in the UK I have never seen an actual shop sell high end stuff. In other words, you fork out a few hundred quid without even holding the meter in your hands prior to the purchase.In the case of Agilent this is relevant because while they are well built and are a 'big name', their 'death by menus' approach of control/navigation is quite annoying. Kiriakos found, however, that Agilent's way an acquired taste, and the menus do make sense after a while. I have asked my Agilent-owner friend to meter-sit while he's on holidays, and then I'll arm myself with patience and much coffee and hopefully will see light behind all these bizarre menus.If you have never owned an Agilent meter but you have friends who do, I suggest you borrow their meter for a few projects and see whether you REALLY want to own an Agilent.
IEC panel connector hole puncher - Page 1
Forum section: electronics / general

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: August 03, 2011, 08:31:32 am
content: Does somebody know where to buy this misterious tool ?

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: August 03, 2011, 09:33:25 am
content: One picture or a better description it would help us more.I do not wish to use Google as assistance, so to find out.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: August 03, 2011, 09:42:02 am
content: The manufacturers to look at are greenlee and q-max. Just had a quick look and there don't seem to be as many versions as I remember seeing a few years ago - I think I have a D connector one somewhere.For something as large as IEC you may be looking at hydraulic rather then screw-down typeFarnell only seem to stock round ones :http://uk.farnell.com/jsp/search/browse.jsp?N=2031+203218&Ntk=gensearch&Ntt=q-max&Ntx=mode+matchallpartial&D=*q-max*A google for qmax rectangular punch brings surprisingly few different sizes - maybe they are discontinued?http://www.tikproducts.co.uk/qmax-rectangular-punch---2132-x-1516in-26587-p.asp
Farnell UK website down - Page 1
Forum section: electronics / general

author: Kibi
author_rank: Unknown
timestamp: August 02, 2011, 08:35:02 pm
content: Is anyone else having problems accessing uk.farnell.com or is it just me?cpc.farnell.com also appears to have gone belly up.

author: IanB
author_rank: Super Contributor
timestamp: August 02, 2011, 08:41:47 pm
content: Site unavailableOur websites are currently unavailable whilst we perform a scheduled system upgrade.Every effort has been made to minimise the impact of this event and we apologise for any inconvenience this has caused.(They are suggesting to contact them telephonically should you wish to place an order in the mean time.)

author: Kibi
author_rank: Unknown
timestamp: August 02, 2011, 08:48:39 pm
content: OK cool, thanks. It seems to be the same for all the European sites. I'll just use the Australian one for now to design my project.
Weller flat tip for drag soldering SMD - Page 1
Forum section: electronics / general

author: tunes
author_rank: Newbie
timestamp: August 11, 2011, 10:28:27 am
content: I have a WES 51 stationWHat is the part number and size flat tip needed for drag soldering SMD?

author: EEVblog
author_rank: Unknown
timestamp: August 11, 2011, 10:34:36 am
content: You can do it with any top really. Larger sizes might be better though.What is your current tip?, and have you tried it?Dave.

author: KJ6EAD
author_rank: Contributor
timestamp: August 11, 2011, 09:14:43 pm
content: The WES51 uses the PES51 pencil which uses the ET series tips.http://www.cooperhandtools.com/brands/weller/index.cfm?model_list=1&att_id=WEL007%20%20%20%20%20%20%20%20%20%20%20%20&att1=Tips%20and%20Nozzles%20%20%20%20%20%20%20%20%20%20%20%20%20%20&att2=ET%20Series%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20If you don't mind sloppy work, use lots of flux and have a lot of soldering experience, any ordinary screwdriver tip will work. If you want better results with less effort, try to get some tips that match the work. A bent conical (Weller doesn't offer one) for chip components and bevel (single flat) for gull wing leads are a good start. Plato makes a reservoir tip for SMD that fits (EW-0574).http://www.techspray.com/download-tds-document.php?pId=129
Help me help a friend - reading schematics - Page 1
Forum section: electronics / general

author: img
author_rank: Regular Contributor
timestamp: July 28, 2011, 01:06:25 pm
content: I have a friend who is getting into electronics, and he wants a book to learn to read schematics. My problem is that I don't know of any such material in English and don't want to seem unhelpful. Besides, I think it's down to gradually building up from little projects, and it's not really a matter of sitting down and reading a book (imo, anyway).In any case, if there are useful schematics-reading books in English, please let me know, and I'll pass on your recommendations.

author: EEwannabe
author_rank: Contributor
timestamp: July 28, 2011, 06:34:49 pm
content: I have two on my bookshelf I was given for free over a decade ago. "How to Read and Interpret Scematic Diagrams by J. Richard Johnson" and "Complete Guide to Reading Schematic Diagrams by John Douglas-Young" Both are a bit dated being that many of the circuits include vacuum tubes.-Patrick

author: sacherjj
author_rank: Frequent Contributor
timestamp: July 28, 2011, 06:59:43 pm
content: A quick google search found many sites that would get them started.

author: img
author_rank: Regular Contributor
timestamp: July 28, 2011, 07:36:21 pm
content: I'd go with Google search too, but he wants a book. I'll pass on Patrick's refs in the meantime. Thanks!

author: ivan747
author_rank: Super Contributor
timestamp: July 28, 2011, 10:44:26 pm
content: Printed book? Just hit File->Print on that PDF you found on Google!Here's a link:http://tinyurl.com/3rqd4j9-----------------------------I always wanted to do that. Now this one looks good:http://www.kpsec.freeuk.com/study.htmI learned a lot on that site a while ago.

author: img
author_rank: Regular Contributor
timestamp: July 29, 2011, 06:25:34 am
content: Quote from: ivan747 on July 28, 2011, 10:44:26 pm

author: img
author_rank: Regular Contributor
timestamp: August 02, 2011, 04:14:57 pm
content: Quote from: EEwannabe on July 28, 2011, 06:34:49 pmPlease accept hearty thanks from myself and my friend; he found Douglas-Young's book and is very pleased with it.
The Mysterious Negistor - Popular Electronics 1975 - Page 1
Forum section: electronics / general

author: Darkcyde
author_rank: Newbie
timestamp: August 01, 2011, 04:48:01 am
content: Ran across an old 1975 popular electronics article and a few other resources on negistors made from transistors and various other materials.1975 popular electronics article: "The Mysterious Negistor"http://www.schematicsforfree.com/files/Components/Circuits/Negistor%20Explained%20-%20The%20Mysterious%20Negistor.pdfA Negative Differential Resistance Oscillator with a Negistor:http://jlnlabs.online.fr/cnr/negosc.htmThe Chung's Negative Resistance experiment:http://jlnlabs.online.fr/cnr/How to build a Four-Lamina composite CNR:http://jlnlabs.online.fr/cnr/cnr4lbld.htm
Are those really massive MOVs in the B+K 2709B? - Page 1
Forum section: electronics / general

author: tom66
author_rank: Super Contributor
timestamp: August 02, 2011, 07:53:02 pm
content: I opened my 2709B up today... then I looked at the MOVs. Or supposedly they are. They have the component ID "C##", for capacitor. And the markings on them seem to suggest they are capacitors. The other protection on the board seems to consist of a PTC and a small 1W input resistor. This is very disappointing if it is true, since I paid almost $135 to get it to the UK plus 20% tax (probably the largest amount of money I have spent on any test equipment), and have been using it in potentially dangerous situations with regard to the CAT rating and the massive MOVs which Dave indicated in his video.First question, are these really caps or are the mislabeled? To the credit of B+K, they are massive for capacitors. And they are in exactly the right spot to look like MOVs so it is easy to get them confused. If that's deliberate I do not know.Second question, would this meter have ever met its specifications? (CAT III 600Vac/dc & CAT II 1kVdc/750Vac)Third question is the meter actually designed by B+K? I notice several odd markings on the PCB and no reference to B+K throughout the whole meter, except on the front name plate. It could be that B+K are buying meters cheap from Taiwan and rebadging them. If it's a Mastech, call me pissed. Mastech make okay meters for low voltage circuits but I would never trust them on anything high power like I have been trusting this one.

author: lowimpedance
author_rank: Super Contributor
timestamp: August 03, 2011, 12:03:06 am
content: Some pictures of your actual unit would be useful.

author: tom66
author_rank: Super Contributor
timestamp: August 03, 2011, 12:28:38 am
content: I'll try to post pics tomorrow, when I find my camera. But Dave's meter is the same... see video. 25:00 onwards.

author: EEVblog
author_rank: Unknown
timestamp: August 03, 2011, 12:33:00 am
content: They are MOV's10S112KDave.

author: tom66
author_rank: Super Contributor
timestamp: August 03, 2011, 12:40:50 am
content: Quote from: EEVblog on August 03, 2011, 12:33:00 amGood to know - now I was annoyed because they are marked C... but why? Just a mistake, I guess? I will have to look at in more depth tomorrow.

author: EEVblog
author_rank: Unknown
timestamp: August 03, 2011, 01:04:18 am
content: Quote from: tom66 on August 03, 2011, 12:40:50 amThe layout/schematic person decided to use that designation for some reason.I guess they are closer to capacitors in terms of usage than anything else.Not the first time I've seen it.Dave.

author: EEVblog
author_rank: Unknown
timestamp: August 03, 2011, 01:30:14 am
content: Curves for the MOV's:http://www.rfeinc.com/catalogs/5%20circuit%20protection/b%20metal%20oxide%20varistors%20(mov)/C5BB10%2010mm%20&%2014mm%20V-I%20Curves.pdfDave.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: August 03, 2011, 09:43:31 am
content: Quote from: tom66 on August 03, 2011, 12:40:50 amThey probably used a library footprint for a capacitor and couldn't be bothered to change the "C" that came with it.
what to do with old PCBs.... - Page 1
Forum section: electronics / general

author: Zad
author_rank: Super Contributor
timestamp: July 31, 2011, 08:09:25 pm
content: I used to have something similar when I was a kid - nightmare to dust!Something makes me want to strip all the goodies off those boards though...My lab notebook is one of these:

author: tekfan
author_rank: Frequent Contributor
timestamp: July 31, 2011, 10:39:02 pm
content: The video reminds me of Jim William's minuteman missile guidance system on his wall.

author: gregariz
author_rank: Frequent Contributor
timestamp: July 31, 2011, 11:06:11 pm
content: cool stuff.... my wife would take my testicles but cool anyways... maybe I'd hack a hole in the middle for a dart board though

author: Rufus
author_rank: Super Contributor
timestamp: July 31, 2011, 11:47:04 pm
content: a) I think you have too much spare time.b) Your wall is no longer ROHS compliant.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: August 01, 2011, 12:15:54 am
content: Quote from: tekfan on July 31, 2011, 10:39:02 pmSpeaking of which - I found these when I was digging out PCBs for this...

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: August 01, 2011, 12:20:04 am
content: Quote from: Rufus on July 31, 2011, 11:47:04 pmI will make a point of not placing it on the market in the EU then.Although it wouldn't be the first time thatsomeone's tried selling a wall

author: Rufus
author_rank: Super Contributor
timestamp: August 01, 2011, 02:09:57 am
content: Quote from: mikeselectricstuff on August 01, 2011, 12:15:54 amThey are ADCIS COMPUTER boards (you can get that much from the NINs). Might be Raytheon VAX 860 boards, maybe something to do with this contracthttp://articles.janes.com/articles/Janes-C4I-Systems/Air-Defence-Command-Information-System-ADCIS-United-Kingdom.html

author: ciccio
author_rank: Frequent Contributor
timestamp: August 02, 2011, 05:08:41 pm
content: I received this bookmark about 10 years ago from an American friend.A close examination shows it was an XT motherboard (PCB reports: made in Taiwan).

author: marmad
author_rank: Super Contributor
timestamp: August 03, 2011, 11:04:19 am
content: Make art.

author: SnakeBite
author_rank: Regular Contributor
timestamp: August 03, 2011, 12:01:08 pm
content: Quote from: marmad on August 03, 2011, 11:04:19 am\WOW!! nice one! i like it
Circuit Specialists - Page 1
Forum section: electronics / general

author: img
author_rank: Regular Contributor
timestamp: July 30, 2011, 06:23:53 pm
content: I keep forgetting to ask this: what do you people think about these Circuit Specialists? Ok, so it's pretty clear they're selling some rebadged Chinese stuff, but has anyone here ever used their rework stations?

author: gregariz
author_rank: Frequent Contributor
timestamp: July 30, 2011, 06:30:40 pm
content: Yes.. I use their cheap Sirocco unit, had it for about 2 years. Seems fine, I don't do alot of rework however. But I do use it fairly regularly. I don't like the all in one units however as a general rule so I won't buy one. It does have a fan, and a heater so those will deteriorate over time. I expect to replace it in a few years as these types of things don't last forever.

author: img
author_rank: Regular Contributor
timestamp: July 30, 2011, 07:11:25 pm
content: I agree, the all in one units are trouble.I am in an awkward situation at the moment, as my MBT250 control unit decided to quit on me, and I was thinking about getting the Circuit Specialists' TH desoldering station as I have a fair number of iMacs whose caps need changing, and the customer will be phoning about them by the end of the week. After that I'll just repair the control unit, but now there is no time.In another thread I tried getting info about easily available desoldering stations with a straight handpiece (like my SX90 Sodr-X-Tractor), but I am quickly running out of time and am getting desperate enough to get the CS unit, gun-shape handpiece and all.

author: Bored@Work
author_rank: Super Contributor
timestamp: July 30, 2011, 08:18:46 pm
content: Quote from: img on July 30, 2011, 07:11:25 pmWeller, e.g. WDD81X (requires shop air), WRS1002X or WR2000X, all with DXV80 handpiece.

author: img
author_rank: Regular Contributor
timestamp: July 30, 2011, 08:42:02 pm
content: Quote from: BoredAtWork on July 30, 2011, 08:18:46 pmYes, I read that, thanks. However, I have decided to stop buying Weller, and in any case Weller is too expensive to get just as a 2-3 week tide-over.I quite like Hakko, Pace, JBC, but at the moment it's probably easier and quicker to get something cheap and easily available in the UK.
Agilent DSOX2000 and DSOX3000 Series Free Upgrade Offer - Page 1
Forum section: electronics / general

author: Dad-O-Rama
author_rank: Contributor
timestamp: July 13, 2011, 05:35:15 pm
content: I received this pop up a few days ago, completed it, and just received the wavegen lic for my DSOX2024! I haven't found any link by searching for it to pass onto others, so I'll do that here.https://www.home.agilent.com/agilent/editorial.jspx?cc=CA&lc=eng&ckey=2061359&id(be sure to delete any of my information)Free Scope UpgradeYou could receive one FREE upgrade associated with the purchase of a new Agilent InfiniiVision 2000 X-Series, 3000 X-Series, or 7000B Series oscilloscope. (After reviewing the upgrade table, please use your back key to return to the Web page)Simply register your information below and you will receive an email with instructions to claim your FREE upgrade.You will have 90 days to purchase a new Agilent InfiniiVision oscilloscope that best meets your needs and redeem your FREE upgrade.

author: D_B
author_rank: Newbie
timestamp: July 29, 2011, 05:31:23 pm
content: Thanks for the heads up Dad-O-Rama I purchased a DS0X2024 back in March saw your post signed up and received the wavegen license also. Thanks Agilent!

author: DavidDLC
author_rank: Frequent Contributor
timestamp: July 29, 2011, 10:12:03 pm
content: Link is not working ! I also want the WaveGen license !!!Please fix the link or post the correct one.Thanks.

author: plesa
author_rank: Frequent Contributor
timestamp: July 29, 2011, 10:21:41 pm
content: Quote from: DavidDLC on July 29, 2011, 10:12:03 pmRead the thread Agilent new scopes. There is lot of information about it.
nice hardware - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: July 29, 2011, 08:34:05 pm
content: nice hardwarehttp://s263.photobucket.com/albums/ii151/CUFF3R/insid3%20th3%20D3/

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 30, 2011, 12:53:31 am
content: I would prefer few more words as introduction about this thread.And because I have visited this link when you had posted it on the chat board,I did not see anything amazing.Did you ?

author: img
author_rank: Regular Contributor
timestamp: July 30, 2011, 06:39:59 am
content: Ok, now you have to do a review of the toy and tell us an interesting story.Oh, and pictures - clear, detailed pictures

author: logictom
author_rank: Unknown
timestamp: July 30, 2011, 01:27:14 pm
content: What is it? Is it a D3 or a DE? Hard to tell when you replace E's with 3's in the title. Some context would help
New gimmick: AMPILIZER. Must buy! LOL - Page 1
Forum section: electronics / general

author: IanB
author_rank: Super Contributor
timestamp: August 01, 2011, 11:03:49 pm
content: "Let's say for example that a refrigerator motor requires 100 amps to operate..."I think I can say with certainty that if my refrigerator motor required 100 amps to operate then my electricity bill would definitely be too high!I would guess this is another one of those "power factor correcting" capacitors in a box thingies? A very expensive, gold plated $15/mo capacitor...

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: August 01, 2011, 11:15:30 pm
content: Do you have a pool ? LOLYes it is the toy box with the capacitors, speculating that if you have motors in your home,it will some how improve the power factor of the Mains.Yes if you have a pool, you have an small engine room with two or four pumps.And if you are stupid enough, you will believe that those motors they need the magic box.Well they do not.Simple as that.

author: Wartex
author_rank: Frequent Contributor
timestamp: August 01, 2011, 11:23:06 pm
content: Quote from: IanB on August 01, 2011, 11:03:49 pmI like monthly payments for a physical device that needs no external service. I should starts selling CFL bulbs for $5/mo, stating they save energy better than regular bulbs.

author: EEVblog
author_rank: Unknown
timestamp: August 02, 2011, 12:51:49 am
content: Quote from: IanB on August 01, 2011, 11:03:49 pmBingo.Dave.

author: DrGeoff
author_rank: Frequent Contributor
timestamp: August 02, 2011, 01:05:19 am
content: WTF is a 'magnetic amp'?

author: Unknown
author_rank: Unknown
timestamp: August 02, 2011, 01:13:20 am
content: Quote from: DrGeoff on August 02, 2011, 01:05:19 amit's a special "non magnetic" amp which lives in a tin box and also able to power your electrical devices magic pudding style.
Sealey tools - Page 1
Forum section: electronics / general

author: img
author_rank: Regular Contributor
timestamp: July 29, 2011, 06:32:43 am
content: My screwdrivers at the moment are mostly Wera and Wiha, with a couple of CK and Stanley, and a Bergen bit/handle set. Oh yes, and 2 Bernstein ESD ones.I keep seeing Sealey screwdrivers online and at shops here in the UK, and they don't look bad at all.Have you guys had much joy from Sealey's precision screwdrivers? What's your opinion on the overall quality? How do they compare to the 'big names'?
anyone played with Potato chips? - Page 1
Forum section: electronics / general

author: slburris
author_rank: Frequent Contributor
timestamp: July 25, 2011, 05:16:43 pm
content: That is, chips from Potato Semiconductor?http://www.potatosemi.com/Basically 74XX series logic (and a few other things) at Ghz speedsI heard about these guys a couple years ago. Just checked, and theirUS office still seems to be someone's house in San Jose and they areselling their chips direct on Ebay.Just wackiness or the new way of doing business?I'm tempted to get a couple of their chips just to play with them, althoughI'm not sure I have the capabilities to push them to their limits, if theymeet their datasheet specs.Scott

author: Mechatrommer
author_rank: Super Contributor
timestamp: July 26, 2011, 06:57:40 am
content: i saw good feedbacks in ebay. but their goal is to sell high volume? like potato chip tastes good? not gonna happen i think, their chip is for high end circuit not many people can do. and at $4 per chip thats not cheap. i still struggling thinking on what use their chip if i'm going to get one.

author: sacherjj
author_rank: Frequent Contributor
timestamp: July 26, 2011, 02:10:04 pm
content: Almost makes me want to hook one up wrong in a circuit just to say my problem was barbequed potato chips...

author: Vertigo
author_rank: Regular Contributor
timestamp: July 28, 2011, 11:29:45 am
content: Burning people! he says what were all thinking!

author: tinhead
author_rank: Super Contributor
timestamp: July 28, 2011, 12:03:37 pm
content: for one of my customer i've used potato semi parts (LVPECL translators and clock buffers), no issue at all.Before that i tested most of them here (except CDF parts) and can tell you "it works"as long you follow HF design rules. If not, don't expect more than ~500MHz.A new way of business ? For sure not, there are other manufacturers on ebay too. Potato Semi does havesome distributors too, however if you order directly you will have to pay much less, especially volume price.
CircuitBee - Page 1
Forum section: electronics / general

author: insurgent
author_rank: Regular Contributor
timestamp: July 27, 2011, 03:37:13 am
content: Saw on /. today a blurb about a schematic sharing site called CircuitBee.http://www.circuitbee.com/You can upload schematics in KiCad natively and they have a Eagle to KiCad script for you to convert your Eagle files for upload.Web interface allows you to zoom/pan/full screen schematic.Currently a free/Alpha service. Hopefully they go with Advert support because I'm not too sure anyone would really want to pay. The TOS mentions a "Premium" account. Unfortunately, you pre-adolescent sub-13 year olds are not allowed anywhere near the site as is the norm these days for our To-Catch-A-Predator society. Definitely has a nice potential for a clearing house of circuit designs to mine.I do notice a lack of ability to specify a license for your uploaded schematics. Hopefully they will allow you to specify a CC license for your schematics. The do specify in the TOS that they don't have right to your stuff except for the ability to store it and process it for the web interface which is nice.

author: IanB
author_rank: Super Contributor
timestamp: July 27, 2011, 04:20:55 am
content: Not to be a wet blanket, but how is this better than discovercircuits.com?

author: insurgent
author_rank: Regular Contributor
timestamp: July 27, 2011, 04:39:43 am
content: Quote from: IanB on July 27, 2011, 04:20:55 amBy no means are you being a wet blanket. I'd never seen discovercircuits before.However, on first glance, DC web site doesn't render properly in Chrome and it renders diagrams in PDF. CB seems to be a more modern web site and uses the CANVAS tag to render the schematics allowing for more "interactivity" (full screen, drag to pan, etc). PDF however is good for storing locally so I hope CircuitBee decides to provide a PDF export.But hey, competition is nothing but good for the end users!
What about Lenoxx in Australia ?  - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 23, 2011, 01:47:18 am
content: I own one Lenoxx E3000 , it is an car audio booster equalizer, probably very old model.I had it here collecting dust, I was had saved from getting trashed before few years.Today I just Google about the brand and found to be Australian.I am familiar about lots of brands that are protagonists on car audio systems, but never seen Lenoxx before.Is it any exotic brand ?http://www.lenoxx.com.au/service.aspI did send them one email requesting the specifications of my EQ Booster,and so very soon I will find out how active they are.I will post a picture as soon I will have clean it a bit.

author: vtl
author_rank: Regular Contributor
timestamp: July 23, 2011, 02:50:06 am
content: Well I don't know about the past, but currently they make crappy cheap consumer electronics. I had a Lenoxx digital DVB-T tuner box and it was cheaply made and died withina few years.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 26, 2011, 12:18:19 pm
content: Hmm after several days I got nothing as reply from them.They look dead as a wooden stick.Be aware and avoid them.
Personal Projects and Job Interviews - Page 1
Forum section: electronics / general

author: mishimaBeef
author_rank: Contributor
timestamp: July 26, 2011, 12:04:43 am
content: Hi guys,Just gonna be to the point here: what is exactly so impressive to interviewers about working on your own projects? Aren't we pretty much reinventing the wheel so to speak? I mean all the projects we do have pretty much been done before right? Where is the value? Is it in proving that you understanding the design process? Or somewhere else? Thoughts?Curious guy looking to get serious

author: EEVblog
author_rank: Unknown
timestamp: July 26, 2011, 12:21:24 am
content: It shows that you care enough about electronics to work on it in your own time.To a smart employer that means you are keen, likely more generally knowledgeable than someone who doesn't, andtheydon't have to pay money to keep your still up, as you are already doing it yourself.People who have an active interest in electronics outside of work generally make better engineers, for all sort of little reasons.That's why the project itself doesn't matter, it's just the fact that you had the motivation to do it in the first place.Dave.

author: gregariz
author_rank: Frequent Contributor
timestamp: July 26, 2011, 12:36:48 am
content: Quote from: EEVblog on July 26, 2011, 12:21:24 amFor a design engineer's job I agree with everything Dave said. For the many jobs surrounding engineering, I would have to consider it based on the job at hand. For example I believe many employers prefer project managers who are not technical so I would be most reluctant to tout an electronics hobby for a 'technical administration' post. It just depends who is doing the hiring and firing. If its a technical illiterate, I'd just be a bit cautious as many seem to dislike engineers.
How will switching times affect the deadtime setting? - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: July 25, 2011, 01:30:18 pm
content: Attached is the switching time waveforms copied from the Vishay IRFP264 (N-Channel Power MOSFET) datasheet.According to the datasheet (with an external gate resistance of 4.3ohm):Turn-On-Delay-Time: 22nsRise-Time: 99nsTurn-Off-Delay-Time: 110nsFall-Time: 92nsIfDeadtimeis the "blanking time" configured in the DSP controller to prevent upper and lower switches in the same inverter leg to conduct simultaneously, can I estimate the "Effective-Deadtime" between the VDS of the upper switch and the VDS of the lower switch as the following:Effective-Deadtime = Deadtime – (Turn-Off-Delay-Time + Fall-Time) + Turn-On-Delay-Time(Assume that the gate drive circuit is perfect, i.e. no delay and rise/fall times due to optocouplers)Cheers.

author: mkissin
author_rank: Regular Contributor
timestamp: July 25, 2011, 07:55:36 pm
content: Yes, that would work, but you should keep in mind that your "perfect drive circuit" doesn't exist, and that the required dead time can be increased by all sorts of other factors in the circuit.Also, because you're presumably not driving your switches directly from your DSP, you need to take into account all of the other delays caused by both your high side and low side drivers. These delays won't be specified exactly, but the datasheet should hopefully have worst case values that you can use to build in a safety factor.
Fluke become Sponsor of WorldSkills London 2011 - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 24, 2011, 01:21:16 am
content: Fluke, the global leader in portable electronic test and measurement technology, has announced its sponsorship of WorldSkills London 2011 (www.worldskillslondon2011.com), which will be held over four days at the ExCeL London exhibition and conference centre in London's docklands from 5-8 October 2011.......................The event will be a great chance for young people from 11-19 to try out new skills and find out about career opportunities.More..http://www.warwickts.com/latest-news.asp?id=27

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: July 24, 2011, 01:58:59 am
content: Will there be a 'crash a DMM' competition - GSM, halogen lamps, what next...?

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 24, 2011, 02:20:38 am
content: Quote from: mikeselectricstuff on July 24, 2011, 01:58:59 amLOL ..They are lucky that I am older than 19.With me around , their life would be interestingly challenging.
Which DMM? Amprobe AM-220 or Uni-T UT61D - Page 1
Forum section: electronics / general

author: Julius
author_rank: Contributor
timestamp: July 25, 2011, 10:03:18 am
content: Hi, i can't decide which DMM to buy.I am thinking about Amprobe AM-220 and Uni-T UT61D.I know they are in different categories, but I think i am choosing between quality and features.Which one would you get? I am not a professional, just enthusiast doing stuff with microcontrollers.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 25, 2011, 02:21:49 pm
content: Hi Julius.Just get the most good looking one.At the low priced ones, the differences are few or none.Just get the most good looking, with the digits that looks good on your eyes.

author: FenderBender
author_rank: Super Contributor
timestamp: July 25, 2011, 03:33:20 pm
content: Try the Extech MN26T. It's like an improved EX330 with some other functionality + it's smaller.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 25, 2011, 04:04:40 pm
content: Quote from: FenderBender on July 25, 2011, 03:33:20 pmInteresting suggestion, are you going to send him one for free ?About Julius I have plenty of suggestions for him too, but he was very specific in his own question.

author: FenderBender
author_rank: Super Contributor
timestamp: July 25, 2011, 04:31:47 pm
content: Well he said he was thinking about those two. I do not think he is limited to them.

author: Julius
author_rank: Contributor
timestamp: July 25, 2011, 04:43:16 pm
content: Quote from: Kiriakos-GR on July 25, 2011, 04:04:40 pmI am open to suggestions

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 25, 2011, 05:19:47 pm
content: The next question would be: Are ready to spent 130$

author: Julius
author_rank: Contributor
timestamp: July 25, 2011, 05:32:48 pm
content: Quote from: Kiriakos-GR on July 25, 2011, 05:19:47 pmProbably notI am looking for something well under $100, probably closer to $50.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 25, 2011, 05:53:45 pm
content: The idea was to suggest you one professional small one,that you will gladly keep, even when you will get an more features rich in the future.From the current options, I vote the UNI-T ..

author: Julius
author_rank: Contributor
timestamp: July 25, 2011, 07:53:19 pm
content: Ok, ordered the UNI-T.