hybridfree/eevblog-posts huggingface dataset:
Happy Australia Day! - Page 1
Forum section: electronics / general

author: ChrisW
author_rank: Contributor
timestamp: January 26, 2012, 02:46:11 am
content: G'day,Wishin all the blokes on here a happy Australia day!-Chris

author: Unknown
author_rank: Unknown
timestamp: January 26, 2012, 03:02:21 am
content: Quote from: ChrisW on January 26, 2012, 02:46:11 amStruth you've forgot about all the Sheilas!!!

author: Mint.
author_rank: Frequent Contributor
timestamp: January 26, 2012, 07:14:37 am
content: You too new member

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: January 26, 2012, 07:30:27 am
content: Got some beers happenin' here...

author: EEVblog
author_rank: Unknown
timestamp: January 26, 2012, 07:47:48 am
content: You bloody ripper!Dave.

author: Slobodan
author_rank: Regular Contributor
timestamp: January 26, 2012, 10:47:22 am
content: No offence mates...

author: Unknown
author_rank: Unknown
timestamp: January 26, 2012, 01:46:13 pm
content: For those with suspicious minds I'd like to correct any misapprehension suggesting Girt by Sea was a coastal prostitute. That is entirely incorrect!

author: Bored@Work
author_rank: Super Contributor
timestamp: January 26, 2012, 02:09:12 pm
content: Quote from: Uncle Vernon on January 26, 2012, 01:46:13 pmSo she was actually working inland?

author: siliconmix
author_rank: Frequent Contributor
timestamp: January 26, 2012, 07:14:13 pm
content: yes have a good one all you auzzies
G.I. Joe: Retaliation global release dates vectoralist crap - Page 1
Forum section: electronics / general

author: slateraptor
author_rank: Frequent Contributor
timestamp: January 23, 2012, 01:26:35 am
content: I was really looking forward to watching this in the movies...but it's this kind ofvectoralist bullshitthat really pisses me off and refuse to patronize on principle.Asian Tigers, Tiger Cubs, Dubai, Lebanon, Turkey and Russia will be the first on the list--a whole week before US/CA--whilst Japan is listed as dead last, not being released for months after the fact.

author: amspire
author_rank: Super Contributor
timestamp: January 23, 2012, 02:08:34 am
content: I hope they use the actual GI Joe toy from the 60's as the star of the movie.It would be a big letdown if they used a fake GI Joe.

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: January 23, 2012, 06:58:02 am
content: It's bullshit, yeah. Asia-Pacific always gets to be dead last. It's even worse with DVDs.One of the many reasons why zero-day torrents exist.

author: slateraptor
author_rank: Frequent Contributor
timestamp: January 23, 2012, 07:20:43 am
content: Quote from: AntiProtonBoy on January 23, 2012, 06:58:02 amIn this case, the majority of Asia-Pacific, with the exception of the English speaking nations and Japan, are a week ahead of the release's producing nation. I suspect funding has something to do with it.

author: G7PSK
author_rank: Super Contributor
timestamp: January 23, 2012, 09:06:21 am
content: If film release was world wide simultaneously there would be less pirating also releasing DVD in regional formats is just plain stupid.

author: Glug
author_rank: Contributor
timestamp: January 25, 2012, 01:57:10 pm
content: amspire's right. Screw the actors - do the movie with old GI Joe's, hand animated. Their fixed plastic faces would be more believable than most of the acting you see in those movies.I recently dug my Joes out of storage. They're great! I've been trying to get all that stuff together to auction. Though I am thinking of keeping the Jeep because it is so cool.Gotta go... doing a briefing with the "team" and then we're going to do a big mission!

author: amspire
author_rank: Super Contributor
timestamp: January 25, 2012, 02:54:37 pm
content: You just had to have the GI Joe Jeep. I also remember the flame thrower backpack. And the wetsuit and diving mask.I saw some bits of the trailer. Nothing like GI Joe at all - definitely an imposter. I assume he will be responsible for massive destruction and death while pretending to be on the side of America.Richard.

author: RJSC
author_rank: Regular Contributor
timestamp: January 26, 2012, 12:37:58 am
content: Well, I guess that was expected from an industry that mandated region coded DVDs and players...And now comes this HDCP crap, so that someone who has an older HD TV has to buy a new one to enjoy the full quality contents even if there is no technical reason for it.
Getting component samples from companies. Which ones worked for you? - Page 1
Forum section: electronics / general

author: Mint.
author_rank: Frequent Contributor
timestamp: January 23, 2012, 11:53:47 pm
content: So I was thinking about asking for some samples from some companies later on when I would need something. Which manufactures worked for you and what was their service like?

author: McMonster
author_rank: Frequent Contributor
timestamp: January 24, 2012, 12:20:33 am
content: Primary rule of using samples is avoid abusing it. At least order what you need, not what you would need or better what you need and can't get by other means (insane price, no distributors etc.). The more we abuse this, the less we'll get in the future.

author: 8086
author_rank: Super Contributor
timestamp: January 24, 2012, 01:00:41 am
content: https://www.eevblog.com/forum/index.php?topic=6063.0

author: Short Circuit
author_rank: Frequent Contributor
timestamp: January 24, 2012, 02:57:42 am
content: Digikey, Mouser, Farnell.Instant availability check, reasonable cost, quick delivery and No questions asked

author: Pat Pending
author_rank: Regular Contributor
timestamp: January 25, 2012, 12:02:49 am
content: Maxim, Microchip & Analog DevicesIt was easier in the past, but now the reps want to hand deliver the samples and always want to know what they will be used in.
Share your favourite electronics related photos! - Page 1
Forum section: electronics / general

author: Mint.
author_rank: Frequent Contributor
timestamp: January 25, 2012, 08:42:48 am
content: I would like to see what is everybodies favourite electronics related photos areparticularly something that you find is interesting, awesome, funny, surprising, etc.Sorry if this is a bit off topicIll start with a few of mine:

author: Drirr
author_rank: Regular Contributor
timestamp: January 25, 2012, 09:43:09 am
content: On first picture you can see special Chinese drill. On second picture there is the plane which landed on on highway behind our house. Third picture is Chinese low quality transistor destroyed by tram which runs over it.. accidentally

author: PStevenson
author_rank: Regular Contributor
timestamp: January 26, 2012, 10:49:26 pm
content: This is one of the current project I'm working on..

author: tekfan
author_rank: Frequent Contributor
timestamp: January 26, 2012, 11:36:05 pm
content: I don't think germanium transistors and opamps mix.

author: PStevenson
author_rank: Regular Contributor
timestamp: January 26, 2012, 11:50:04 pm
content: Quote from: tekfan on January 26, 2012, 11:36:05 pmhaha don't worry it's a 555

author: Short Circuit
author_rank: Frequent Contributor
timestamp: January 27, 2012, 12:25:32 am
content: http://cheezburger.com/VanAleph/lolz/View/4359607296

author: harnon
author_rank: Regular Contributor
timestamp: January 27, 2012, 12:03:29 pm
content: I was looking at an older EEVblog video (#8) and found the "Automatically add captions" button. Worth doing for a five minute giggle.

author: NiHaoMike
author_rank: Super Contributor
timestamp: January 28, 2012, 03:11:42 am
content: That's a picture from early on in my senior design project. I was designing a LCD controller to allow the use of a DVD player LCD to display real time power generation. I set that aside when I ended up upgrading the tablet (to one with a conventional LCD) because the one in the picture broke down. I might pull that design out of storage for use in an upcoming project (front panel LCD in a dual mode desktop PC).

author: Mint.
author_rank: Frequent Contributor
timestamp: January 29, 2012, 09:22:05 am
content: I found a funny photo, credit firewalker:Quote from: firewalker on November 01, 2011, 07:23:01 pm
OT: Morse code training software - Page 1
Forum section: electronics / general

author: Teknotronix
author_rank: Regular Contributor
timestamp: January 23, 2012, 12:21:24 am
content: Are there any hams out there that can recommend their favourite morse code training software?

author: w2aew
author_rank: Super Contributor
timestamp: January 23, 2012, 04:35:49 am
content: I like this one. It uses the popular and effective Koch method - fast character speed, slow character spacing.http://www.g4fon.net/CW%20Trainer.htm

author: Teknotronix
author_rank: Regular Contributor
timestamp: January 23, 2012, 05:29:40 am
content: Cheers! I will give it a try.
Meeting Dave - Page 1
Forum section: electronics / general

author: brushless
author_rank: Newbie
timestamp: January 11, 2012, 11:47:04 am
content: Hi , I will be visiting Australia in March. Does anybody know if Dave is giving a Public Lecture that I could go to?

author: siliconmix
author_rank: Frequent Contributor
timestamp: January 20, 2012, 08:49:44 pm
content: he's not doing any lectures any more because of stalkers

author: EEVblog
author_rank: Unknown
timestamp: January 20, 2012, 11:56:43 pm
content: Should I buy a soap box? or maybe just stand on a scope?http://www.lonelyplanet.com/australia/sydney/sights/park/speakers-cornerSunday morning, come one, come all!Dave.

author: requim
author_rank: Regular Contributor
timestamp: January 22, 2012, 07:27:55 pm
content: I'm sure if you come bearing gifts Dave woud probably be happy to meet you. You know something interesting to teardown so the rest of us can enjoy it as well.

author: firewalker
author_rank: Super Contributor
timestamp: January 22, 2012, 08:37:23 pm
content: You would start you speech every time with:Alexander.Quote from: EEVblog on January 20, 2012, 11:56:43 pm

author: siliconmix
author_rank: Frequent Contributor
timestamp: January 22, 2012, 08:50:59 pm
content: or this one.
NI myDAQ  - Page 1
Forum section: electronics / general

author: Cam158
author_rank: Newbie
timestamp: January 21, 2012, 02:34:32 pm
content: Hi everyone,It's been a while since my last visit here and I was hoping someone my be able to help....! I have purchased the National Instruments myDAQ which came with a student copy of LabView. It has some nice pre made VI's including a function gen, however I need to produce a 350Khz pulse for a variable capacitor filter in a basic circuit and I need to know if the DAQ is limited to a certain frequency range. I have tried to create my own VI but I keep getting an error. Anyone have any hints for an amature?CheersCam

author: Unknown
author_rank: Unknown
timestamp: January 21, 2012, 03:22:44 pm
content: According to the specs, the sample rate of the analog outputs is 200 kS/s, so assuming the output bandwidth starts at DC, anything above 100 kHz would be impossible based on the Nyquist-Shannon sampling theorem. According to the manual, the function generator has an output frequency range from 0.2 Hz to 20 kHz, probably because of the output filter and multiple waveforms. Not sure how nice the pulse would be at 20 kHz, it may be slightly rounded due to the finite frequency response of the output filter.

author: Bored@Work
author_rank: Super Contributor
timestamp: January 21, 2012, 03:29:04 pm
content: alm mentioned the key wordQuoteWhy didn't you read the manual? Is that really asked too much from a student?

author: slateraptor
author_rank: Frequent Contributor
timestamp: January 21, 2012, 04:23:07 pm
content: Quote from: alm on January 21, 2012, 03:22:44 pmIt's shit. Unfortunately, MyDAQ is effectively useless beyond audio bandwidth.EDIT:Quote from: alm on January 21, 2012, 03:22:44 pmIt's worse than that; if memory serves correctly, I don't think the software even implements sinc interpolation.

author: caffeinatedbard
author_rank: Regular Contributor
timestamp: January 21, 2012, 11:48:57 pm
content: As an alternate suggestion to the apparent limitation of myDAQ, you could try and make a PLL circuit that is controlled by your myDAQ.Another suggestion would be to use a microcontroller and build a simple RS-232 VI in labview to tell the frequency you desire. You would probably need some extra circuitry to make sure the signal is stable and jitter free but it seems like a fun project anyways.Good luck!
battery problems - Page 1
Forum section: electronics / general

author: siliconmix
author_rank: Frequent Contributor
timestamp: January 20, 2012, 09:26:46 pm
content: can anyone help me ? i keep a yuasa 12v 1.2 lead acid type battery on my bench.i never let it go too low before charging .i've noticed lately that it won't charge above 8v volts.it's a sealed type.is there anything i can do to it to fix it ?

author: PeterG
author_rank: Frequent Contributor
timestamp: January 20, 2012, 09:41:21 pm
content: If your battery is only charging to 8v, then it was bellow 8v to start with, it is not a good idea to over discharge a SLA like this. Discharging a 12v SLA to below 10v will shorten its life.Regards

author: amspire
author_rank: Super Contributor
timestamp: January 20, 2012, 09:48:00 pm
content: If it only charges to 8v, then 3 of the cells are shorted. The other 3 are way overcharged.Battery had had it, unfortunately.Richard

author: G7PSK
author_rank: Super Contributor
timestamp: January 20, 2012, 09:56:29 pm
content: If it is the type of SLA that is found in things like burglar alarms as a standby they have a short life anyway and only last a year or two, they also don't like to be discharged and will often need replacing if the mains fails, I would think yours is now skip fodder. Deep cycle one as used in mobility equipment will recover from heavy discharge quite happily although if you cannot get it to charge above eight volts that too would be junk. I have had 13 years of experience now with mobility SLA's as my wife is in a wheel chair due to an RTA. I have quite a pile of them in various sizes that are no good for a chair anymore,they dont hold enough charge for a days use but they still pack a big enough punch to start a car or work other equipment.

author: Psi
author_rank: Super Contributor
timestamp: January 21, 2012, 12:27:26 am
content: Also, the DiaMec brand that Jaycar sell (at least in NZ) aren't very good.A large percentage of them die in 1-2 years. If you spend 50% more and get a proper SLA, like a Ritar brand, they last much longer. Depending on specific model, the Ritar datasheet say between 5-12 years lifespan.

author: siliconmix
author_rank: Frequent Contributor
timestamp: January 21, 2012, 09:51:40 am
content: thanks people .i was hoping there would be a cure.me being tight as a ducks arse with cash
Riddle me this: ~1.8ns rise time on a Tek 2225??? - Page 1
Forum section: electronics / general

author: slateraptor
author_rank: Frequent Contributor
timestamp: January 21, 2012, 01:24:31 am
content: Sorry for the shit pic; old phone.Anyways, just got a 2225 in the mail today and was doing a bit of playing around. The dual trace horizontal zoom function is quite nice (although fine adjust is a lot more finicky than I'd like it to be). Had to repair the cal port on the front panel too as it had somehow busted off on the main PCB end.After getting that done, I try to measure the cal signal rise time and got the attached pic...that's ~1.8ns.Significantly lower than I had anticipated.Has anyone else with a 2225 encountered something similar?Here's how I got there:1) Compensated 10x probe on Ch12) Vertical at 100mV/div; vernier to scale3) Horizontal at 0.1ms/div; switch to MAG view, select X50 (effectively 2ns/div); ensure hzn cal is locked4) Trigger off falling edge; HF reject if no lockP.S. If anyone has a digital copy of the 2225 service manual, please hook it up.EDIT:I'm a dumbass. Disregard.More like 1.8us rise time for the cal signal...only off by 3 orders of magnitude.

author: amspire
author_rank: Super Contributor
timestamp: January 21, 2012, 02:06:19 am
content: Isn't the maximum sweep speed of the 2225 5 nS/div, so that rise time is more like 4.5nS at best?Looking at a picture of the front of a 2225, the x50 switch has the word "except" on it bracketting the 0.5, .1 and .2 uS/div speeds. In other words, you do not get a x50 MAG at 0.1uS/div.Richard

author: slateraptor
author_rank: Frequent Contributor
timestamp: January 21, 2012, 02:13:12 am
content: Quote from: amspire on January 21, 2012, 02:06:19 amOops. I really meant 0.1ms, not micro; corrected in the first post.EDIT: ...and that would explain my error in calculation. Doh!

author: BravoV
author_rank: Super Contributor
timestamp: January 21, 2012, 02:23:00 am
content: Quote from: slateraptor link=topic=6481.msg84806#msg84806Ha..ha.. don't worry, it happened once in a while, especially at scope without digital readout.Anyway, congratz on the 2225 !
Cutting fibreglass safely - Page 1
Forum section: electronics / general

author: deephaven
author_rank: Frequent Contributor
timestamp: January 20, 2012, 04:33:55 pm
content: I have a batch of PCBs which have been panelised. I need to now cut off the small remaining bits of fibreglass to seperate the boards. I just got a Dremel with a cutting disk for this purpose and it works like a charm. The only thing is I get a strong smell of fibreglass when I do the cutting, even at the Dremel's slowest speed. I'm worried about inhaling too much of this stuff in and would welcome any comments on what to do: mask, ventilation or use something different?

author: sonicj
author_rank: Frequent Contributor
timestamp: January 20, 2012, 04:43:54 pm
content: i would suggest at minimum a mask or preferably a respirator & to do it outside.safety glasses are a must-have with cutoff wheels!-sj

author: Unknown
author_rank: Unknown
timestamp: January 20, 2012, 04:55:16 pm
content: The dust that comes off when cutting it is largely glass (or quartz if you like). Inhaling quartz dust causes silicosis - a serious illness.If you can, use tin snips to cut pcb's without dust and smell.

author: IanB
author_rank: Super Contributor
timestamp: January 20, 2012, 05:09:06 pm
content: I agree, definitely face mask and eye protection if cutting fibreglass.I'm not sure, but maybe scoring and snapping is a suitable technique for separating the pieces?

author: ejeffrey
author_rank: Super Contributor
timestamp: January 20, 2012, 05:21:42 pm
content: A simple dust mask (like you use for wood working) will keep out the glass dust. The smell is from the burning resin. A dust mask won't keep that out, but blocking the dust is the main thing. The solution to the burning smell is better ventilation.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: January 20, 2012, 05:45:42 pm
content: These are the ideal tools for depanelisinghttp://grovesales.co.uk/categories.php?id=67but failing that, a cheap set of sidecutters will do the job ( will wreck blades eventually so use a seperate cheap pair for PCBs)

author: deephaven
author_rank: Frequent Contributor
timestamp: January 20, 2012, 08:06:46 pm
content: Thank you for all the very useful replies, much appreciated.Mike, many thanks for the link to the special tool. That is perfect and I shall order one straight away, they're reasonably priced too. I hadn't come across that supplier before, I shall spend some quality time exploring all the stuff they stock

author: siliconmix
author_rank: Frequent Contributor
timestamp: January 20, 2012, 08:17:49 pm
content: hey deephaven if it makes your skin itch hand,arms or anywhere try vaseline on exposed parts
Software update gone wrong - Page 1
Forum section: electronics / general

author: JuKu
author_rank: Frequent Contributor
timestamp: January 20, 2012, 10:56:28 am
content: My Sonos asked for a software update. I started the process, which failed, the restart never did. The network lights were blinking abnormally fast, no way there is that much traffic on the network. I searched the Sonos website that as one step of troubleshooting asked to reboot the router. I did, and at the point where network connections came back, the Sonos power supply gave out a loud short circuit sound and strong smell of ripe electronics.The lightning into the power outlet killed my file server, too(!).The data is safe, but the controller died. To retrieve the data, I opened my desktop computer to get spare Sata and power connections. It has been a while when that box has been open, so it was dusty. I vacuumed it, and now the fan is obnoxiously loud.I should stop typing while the keyboard still works...The router is fine, but I haven't yet tried the port where Sonos was connected. Still, surprisingly much hardware damage for a simple(?) software update!(Btw, Sonos agreed to replace the device, and Buffalo agreed that a power glitch should not kill a server, even if it was in the same power outlet as a failed power supply. Not done yet, but they will take care of me. I'm not writing to Asus about the fan, though.)

author: BravoV
author_rank: Super Contributor
timestamp: January 20, 2012, 11:06:31 am
content: ????Since there is no question asked, this thread is quite confusing, should I say sorry for you or congratulate you ?

author: JuKu
author_rank: Frequent Contributor
timestamp: January 20, 2012, 11:13:24 am
content: Quote from: BravoV on January 20, 2012, 11:06:31 amI'm just letting the steam off. I would appreciate some wishes for better luck.

author: sonicj
author_rank: Frequent Contributor
timestamp: January 20, 2012, 04:53:09 pm
content: bummer!could be worse... you could be dead from the lighting strike and all your data corrupted by a glitch in the matrix.-sj
Power supply project Q - Page 1
Forum section: electronics / general

author: picolater
author_rank: Newbie
timestamp: January 19, 2012, 07:07:18 pm
content: Hi,Great open source project Dave.Extremely educational.Just wondering if you will be able to modify your designfor 0 to 12v or 16v output as a 0 to 6v limit is not practicalfor an elaborate bench supply.Thought I would ask as your project has really expandedfrom your first concept.I hope you are able expand the voltage range before its too late.I plan to build one and have started ordering parts. Opamp TLC272BC > 5 samps.Thanx again Dave and all other participants.RgdsBrian

author: IanB
author_rank: Super Contributor
timestamp: January 19, 2012, 07:42:26 pm
content: Dave has said he is not creating a general purpose bench supply. There are many of those out there already. This project apparently has a specific purpose which Dave has not revealed yet.

author: picolater
author_rank: Newbie
timestamp: January 20, 2012, 03:46:07 pm
content: OKThanx IanBWill happily follow along and hold off building one until I find out what it was specifically designed for.RgdsBrian
4x20 LCD with RGB backlight? - Page 1
Forum section: electronics / general

author: PeterG
author_rank: Frequent Contributor
timestamp: January 20, 2012, 01:58:17 am
content: Hi All,I notice Dave has implemented a 2x16 lcd with RGB backlight in his P.S.U project. Anyone seen a 4x20 lcd with RGB led backlight being sold by anyone ?Regards

author: Jon Chandler
author_rank: Frequent Contributor
timestamp: January 20, 2012, 03:22:31 am
content: I've only seen a 16x2 at NCK Electronics.16x2 with RGB backlight

author: JSnyder
author_rank: Contributor
timestamp: January 20, 2012, 04:01:50 am
content: Adafruit has what your looking for.http://www.adafruit.com/products/499

author: PeterG
author_rank: Frequent Contributor
timestamp: January 20, 2012, 04:47:59 am
content: Thanks JSnyder,that's exactly what i am after.Jon, your review of the Akafuino X led me to score one off eBay for $20 and change. Will be interesting to play with, i like the 2 internal DACs. Just have to wait for it to arrive from china.Regards

author: EEVblog
author_rank: Unknown
timestamp: January 20, 2012, 06:58:10 am
content: I am using a 2x20 actually, from Newhaven.Dave.

author: EEVblog
author_rank: Unknown
timestamp: January 20, 2012, 11:55:45 am
content: Quote from: Psi on January 20, 2012, 11:44:22 amYes indeed. Only problem is everyone will have a different idea of what that will be.But the great thing is, it's open source and you can change it!Dave.

author: Psi
author_rank: Super Contributor
timestamp: January 20, 2012, 12:02:27 pm
content: hehe, sorry, i moved above post to "Power Supply Design Part 7" when i realized this thread wasn't really about the powersupply.
FindChips gone AWOL - Page 1
Forum section: electronics / general

author: IanB
author_rank: Super Contributor
timestamp: January 19, 2012, 08:58:56 pm
content: I've seen this a couple of times now, different browsers, different ISPs:The error message is slightly ironic...

author: 8086
author_rank: Super Contributor
timestamp: January 19, 2012, 09:00:34 pm
content: I've been seeing that for a few weeks now

author: Kibi
author_rank: Unknown
timestamp: January 19, 2012, 09:03:44 pm
content: Could it be a browser issue? It's showing up for me right now (Safari).

author: McMonster
author_rank: Frequent Contributor
timestamp: January 19, 2012, 09:52:00 pm
content: For me it appeared just a day or two ago, the bar was working fine before.

author: Short Circuit
author_rank: Frequent Contributor
timestamp: January 19, 2012, 10:25:52 pm
content: Got that too the day before yesterday or so. Now its fine.Vista & IE9

author: Psi
author_rank: Super Contributor
timestamp: January 20, 2012, 12:34:11 am
content: It's working for me

author: EEwannabe
author_rank: Contributor
timestamp: January 20, 2012, 06:20:34 am
content: No longer working for me either. Win7 / IE9- Patrick

author: amspire
author_rank: Super Contributor
timestamp: January 20, 2012, 06:29:05 am
content: There are lots of previous posts on this. Last time I looked, Findchips relied on at least 5 different servers and it looked like you were directed to servers based on geographic regions of IP's. If one went down, people in limited geographic regions would get no Findchips. Everyone directed to other servers will not have a problem.The problem is nothing to do with the EEVBlog site. If you need it, and it is down on EEVBlog, then you will have to go tohttp://www.findchips.com.Richard

author: IanB
author_rank: Super Contributor
timestamp: January 20, 2012, 06:33:07 am
content: Doesn't bother me, but I thought that findchips might care to know about it.

author: EEVblog
author_rank: Unknown
timestamp: January 20, 2012, 06:58:53 am
content: Yep, even I'm seeing it this time.I'll give them a ping...Thanks.Dave.
something to do with that thing-o-matic/reprap - Page 1
Forum section: electronics / general

author: naimis
author_rank: Contributor
timestamp: January 19, 2012, 04:14:54 am
content: Make spools with just the right ID to be used as PVC pipe fittings. Why? Wind up those spools with magnet wire and make yourself a gauss/coil gunThe idea is pretty absurd, I know, which is why it's over here in general chat rather than in the projects area. But if anyone decides to run with it, keep us posted!

author: PeteInTexas
author_rank: Frequent Contributor
timestamp: January 19, 2012, 04:19:57 am
content: I was thinking Dave make a baby rattle but yea I'm sure Sagan would love to play with a coil gun.
Philips / Fluke PM33** series, how to check how much memory is fitted? - Page 1
Forum section: electronics / general

author: Chris Wilson
author_rank: Super Contributor
timestamp: January 18, 2012, 01:08:26 pm
content: Looking at a couple of PM3380B and 3382 scopes, they apparently have an acquisition memory upgrade option available to give 32K. Anyone know how to check if this option is fitted please? Thanks. I believe the 3384 and 3394 four channel models all have the 32K memory? If anyone in the UK has a 3394 or 3384 for sale I am interested.
Melbourne Mini Maker Faire Walkthrough - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: January 16, 2012, 02:32:13 am
content: Dave.

author: Jimmy
author_rank: Regular Contributor
timestamp: January 16, 2012, 06:29:36 am
content: I met those Perth hackerspace guys at the first stall at HSBNE 2 weeks ago. I cant wait till we can host one here in Brisy

author: johnboxall
author_rank: Unknown
timestamp: January 16, 2012, 10:22:12 am
content: It was a great day, even moreso considering it was setup in four to five weeks. There was a wide range of exhibitors that catered to a broad spectrum of people. Plus a good balance of age and gender in the visitors. Rumour has it the next Melbourne event will be October.

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: January 16, 2012, 11:03:21 am
content: The Maker Faire was not too bad! I thought it was a strong start for a small event like this.

author: johnboxall
author_rank: Unknown
timestamp: January 17, 2012, 12:24:37 pm
content: Here's another video of the event -http://t.co/snQM0OYGScary to see myself on video.

author: johnboxall
author_rank: Unknown
timestamp: January 18, 2012, 12:21:59 am
content: Quote from: wilfred on January 17, 2012, 10:45:35 pmAh no, somewhat taller than the robots.
Current sinking question - Page 1
Forum section: electronics / general

author: PetrosA
author_rank: Frequent Contributor
timestamp: January 17, 2012, 01:42:42 pm
content: There's a situation I've come across a few times when troubleshooting that I'm hoping someone here can shed some light on.I've had situations where LED drivers or electronic 12V lighting transformers (SMPS) have been on a circuit with a Class A GFCI breaker, which is designed to trip between 4-6 mA of leakage current and have tripped the GFCI breaker on starting. Generally, the PCBs aren't connected to the system earth, so I don't believe it's an actual ground fault. Rather, I suspect it's something in the design of the circuit itself that's sinking 4 mA or more for enough cycles that the GFCI senses an imbalance between the hot and neutral.My question is: Is there anything about this kind of mains-to-low volt circuit that could sink that amount of current? Would something in the circuit like a capacitor need to be out of spec to cause this? Any thoughts will be helpful.Thanks

author: Kilroy
author_rank: Regular Contributor
timestamp: January 17, 2012, 03:50:49 pm
content: Could have something to do with RFI chassis capacitors. It could be that there is too much leakage current through the capacitors going into the load (between hot and ground) for the GFI to tolerate.Actually, this would be even more possible if there happened to be more than one such circuit being monitored by a single GFI, since the total leakage would then be the summed leakage current of all the circuits involved.

author: G7PSK
author_rank: Super Contributor
timestamp: January 17, 2012, 05:28:43 pm
content: If as I assume a GFCI is the same as an ELCB earth leakage circuit breaker an un-balanced load can trip them without an eath fault. You can get an unbalanced load from harmonic currents in the system.

author: PetrosA
author_rank: Frequent Contributor
timestamp: January 17, 2012, 08:49:36 pm
content: This is kind of a fleeting problem - the most recent example I have is where one of a number of low voltage track lights (on a line voltage track with self-contained 12V electronic transformers) would trip the GFCI breaker when the bulb was inserted. A lot of these little transformers have a load sensor that only turns the circuit on when it detects a working lamp is present, so whatever is causing the fault current won't happen when there's no bulb in the light. I can't imagine that there's an issue on the load (12V) side since by code here in the US, a transformer secondary has to be isolated from the primary side so, in theory, you can take the 12V hot and touch it to ground without tripping the GFCI breaker. That's why I'm thinking that something in the circuit is sinking the current, but for now that's only a theory. I'd love to be able to prove it though

author: PetrosA
author_rank: Frequent Contributor
timestamp: January 17, 2012, 08:51:56 pm
content: Quote from: G7PSK on January 17, 2012, 05:28:43 pmHow would this work? I can visualise it in a situation where there are two phases or legs feeding a circuit, but not with a hot and neutral.
LED Resistor, before or after? - Page 1
Forum section: electronics / general

author: Mint.
author_rank: Frequent Contributor
timestamp: January 17, 2012, 04:25:36 am
content: I am slightly confused. On which side is the resistor placed on and what effect does it have on the circuit?

author: vk6hdx
author_rank: Regular Contributor
timestamp: January 17, 2012, 04:30:12 am
content: For a simple circuit with a single led and resistor it does not matter if the resistor is on the anode or cathode side of the LED.

author: metalphreak
author_rank: Frequent Contributor
timestamp: January 17, 2012, 01:27:09 pm
content: The resistor is there to limit the current.Each type/colour of LED has a "forward voltage drop". The rest of your supply voltage is dropped across the series resistor. The voltage across the resistor combined with the resistor value gives you the current. Without it, the LED would burn out because it would pass far too much current.Since the LED and resistor are in series, it doesn't matter which side it is on.A red led would be say 2.0V forward voltage. If you use a 5V supply, this means 3V across your resistor. If its a 1k ohm resistor, 3 / 1000 = 3mA currentBlue/White LEDs are usually ~3V so you need different resistor values for the same brightness/current.

author: RJSC
author_rank: Regular Contributor
timestamp: January 17, 2012, 01:35:21 pm
content: I put the resistor between the LED and the element that switches it on (IC, transistor, switch) and connect the led directly to a power rail, just because it makes sense to me visually and if facilitates fault finding on the circuit, but I can't find any electrical reason to do it.
Soldering Station Comparison - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: January 16, 2012, 09:22:13 pm
content: Dave, are you considering doing a review of some good quality soldering stations.I would like to hear your thoughts on the Metcal MX 5000, Thermaltronics 9000, Weller and Hakko 951. I have a particular interest in the first two as they appear to come out of the same factory presenting what appears to be identical design.I would also like to hear your ideas on Curie Temp probe technology.To other bloggers, anyone with experience of the Metcal and Thermaltronics .... likes, dislikes, warranty issues, ease of purchase etcThank you ..........

author: nanofrog
author_rank: Super Contributor
timestamp: January 16, 2012, 11:41:08 pm
content: From reading another thread, it stated that Thermaltronics is a separate company founded by some ex-Metcal employees when the patents ran out.Past that, what Weller stations are you looking at?

author: oliver602
author_rank: Regular Contributor
timestamp: January 16, 2012, 11:41:29 pm
content: Here is a related thread you might find interestinghttps://www.eevblog.com/forum/index.php?topic=990.0
Circuit Designer's Companion - Page 1
Forum section: electronics / general

author: caffeinatedbard
author_rank: Regular Contributor
timestamp: January 16, 2012, 12:19:36 am
content: Does anyone know why Peter Wilson is the author of the third edition of the Circuit Designer's Companion?I have been looking around the web to find some insight as to why Newnes didn't go with Tim Williams. Nothing against Peter Wilson, just curious about the strategy of Newnes Press given that both editions written by Tim have done very well indeed. I hope Tim didn't get the shaft from Newnes...Comments appreciated!

author: slateraptor
author_rank: Frequent Contributor
timestamp: January 16, 2012, 02:21:47 am
content: The introduction to the 3rd edition may serve as a clue:QuoteCuriously, Tim Williams' name has been redacted from the 3rd edition front matter.

author: caffeinatedbard
author_rank: Regular Contributor
timestamp: January 16, 2012, 12:31:14 pm
content: My thoughts exactly. And the fact they put the prefaces for the previous two editions written by Tim Williams but did not have any statements alluding to Tim passing the torch on to Pete makes me a little uneasy.I know this is a flawed analogy for several reasons, but if the Art of Electronics 3rd edition suddenly had Pete's name on there instead of Horowitz and Hill, the first thing running through my mind would be if they passed away or if they got canned by Harvard...Such is the business of book publishing.
Websites for electronics schematics and projects. - Page 1
Forum section: electronics / general

author: Mint.
author_rank: Frequent Contributor
timestamp: January 16, 2012, 03:22:23 am
content: When people here want to build something, what websites do they use for resources, projects, schematics?

author: IanB
author_rank: Super Contributor
timestamp: January 16, 2012, 03:50:26 am
content: Google

author: PeterG
author_rank: Frequent Contributor
timestamp: January 16, 2012, 04:18:41 am
content: Quote from: IanB on January 16, 2012, 03:50:26 amAgreed....... best research tool going.Regards
MOBY's nerd cave - who is cool and who is not cool in electronic music - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: January 13, 2012, 11:03:56 pm
content: These are two parts out of a documentary about electronic musical instruments. Enjoy the eye candy.The last thing Moby says is quite interesting.

author: im_a_human
author_rank: Regular Contributor
timestamp: January 14, 2012, 06:51:11 pm
content: aww yeah! this is awesome! I love electronic instuments so much!

author: slateraptor
author_rank: Frequent Contributor
timestamp: January 15, 2012, 12:57:36 am
content: I couldn't help but notice that Moby speaks like a pubescent valley girl...reminds me of my hippy little sister lol. I suppose that makes him an authority on "cool".Nevertheless, interesting videos.

author: sonicj
author_rank: Frequent Contributor
timestamp: January 15, 2012, 01:09:25 am
content: Some seriously esoteric drum machines there!Very clean installation. I wonder if he's nerd enough to make his own cables and do all his own wiring? I liked his slide out dj rig! Saw a few pieces of gear I have in my "collection."-sj

author: sonicj
author_rank: Frequent Contributor
timestamp: January 15, 2012, 04:36:15 am
content: Quote from: NoiseThe bulk of those machines cannot be "played" as they do not have a internal sequencer or any means of external control. As stated in the video, he samples the sounds into the computer where he can then manipulate & sequence them using modern DAW software.-sj

author: Unknown
author_rank: Unknown
timestamp: January 15, 2012, 04:41:27 am
content: Where did the guy with the valuable opinion go?? I was just about to ask him if he made anything better.Oh well forum angels working diligently today.
rigol 02.05.02.00 firmware - Page 1
Forum section: electronics / general

author: matthewell
author_rank: Newbie
timestamp: January 14, 2012, 07:26:09 pm
content: hey i am trying to get home brew working on my ds1000E series scope but i cant seem to find the 02.05.02.00 firmware that i need for the patch anywhere on the internet, if anyone could help point me in the right direction that would be greatthanksMatt

author: mobbarley
author_rank: Regular Contributor
timestamp: January 14, 2012, 11:05:42 pm
content: PM sent.
"Test of Time" Agilent Power Supply Contest - Page 1
Forum section: electronics / general

author: Joe Geller
author_rank: Contributor
timestamp: January 13, 2012, 09:32:52 pm
content: Agilent is running a really cool contest. To enter the Test of Time Agilent Power Supply Contest, you post a picture of your hp or Agilent power supply and a short story about it (very short, 500 words or less).The prizes are Ipods (monthly) and two $11,000 N6705B DC power analyzers with three modules.http://powercontest.tm.agilent.com/index.cgi?PSP_NEXT=TopThe contest is country restricted (see the ruleshttp://powercontest.tm.agilent.com/rules.pdf), however apparently otherwise open to engineers, technicians, electronics hobbyists, and amateur scientists (If I read the rules correctly). There are so few entries I called Agilent (no affiliation), they said the contest is on and legit!

author: DBaron
author_rank: Newbie
timestamp: January 13, 2012, 10:12:52 pm
content: What the heck is up with this part of the fine print?!"If the selected entrant is a Canadian resident, that resident will be required to answer a mathematical skill-testing question, without assistance of any kind (whether mechanical or otherwise), within the time frame provided above."

author: Joe Geller
author_rank: Contributor
timestamp: January 13, 2012, 10:34:31 pm
content: It looks like one of those legal sweepstakes/contest requirements that some states and countries have. Granted, it looks pretty funny as a standalone sentence! Google(tm) the words "Canada mathematical skill-testing question" for more information. I would have added a comment in parenthesis about such an odd looking requirement

author: amspire
author_rank: Super Contributor
timestamp: January 13, 2012, 10:58:36 pm
content: http://en.wikipedia.org/wiki/Skill_testing_questionApparently you don't even have to get the skills test question right, but if they do not add it, the only other alternative is to make it a totally random competition. Since this one is based on voting, it is not random.Sounds like the people who draft laws in Canada need a skills test.

author: slateraptor
author_rank: Frequent Contributor
timestamp: January 14, 2012, 12:47:17 am
content: Wow. Just wow. LMFAO!
Benning DMMs and clamps - Page 1
Forum section: electronics / general

author: PetrosA
author_rank: Frequent Contributor
timestamp: January 13, 2012, 04:13:41 am
content: I came across this brand while searching for arc flash gear. Is anyone familiar with them? Their high-end handheld DMM costs over $600 US, range 1uV-750V AC and doesn't look like a rebrand. Supposedly made in DE.

author: nukie
author_rank: Frequent Contributor
timestamp: January 13, 2012, 01:07:14 pm
content: Benning like this onehttp://www.newark.com/benning/044080/multimeter-digital-benning-mm-11/dp/38K9902?in_merch=Popular%20Multimetershttp://www.conrad.com/Benning-MM-11-3-DMM.htm?websale7=conrad-int&pi=122728&ci=SHOP_AREA_17622_1101010&Ctx=%7Bver%2F7%2Fver%7D%7Bst%2F3ec%2Fst%7D%7Bcmd%2F0%2Fcmd%7D%7Bm%2Fwebsale%2Fm%7D%7Bs%2Fconrad-int%2Fs%7D%7Bl%2Fint%2Fl%7D%7Bsf%2F%3Cs1%3Ebenning%3C%2Fs1%3E%2Fsf%7D%7Bp1%2Fdb322398da9564e856c3a15007d0d468%2Fp1%7D%7Bmd5%2F257c794ed0b00972ef2c37a1c54d81ed%2Fmd5%7Dhttp://uk.farnell.com/benning/044080/multimeter-digital-benning-mm-11/dp/9461337see description - (Country of Origin: TW Taiwan)is made by Appatech in Taiwanhttp://www.appatech.com/appa_product_home.php?pdid=20051219042803105267&&kindid=2005081003113623241Good stuff bigass HRC fuse inside! The 10A shunt is also very good.If I am not wrong, Appatech also made a DMM for Hioki (older model)https://www.eevblog.com/forum/index.php?topic=2378.msg32371#msg32371The internals compared to my Appatech is very similar.The default setting is AC and cannot be set permanently. So it's a electrician's meter. If accuracy is required my advise is to look for other meter, this meter wasn't very accurate when I got it and it cost A LOT.

author: PetrosA
author_rank: Frequent Contributor
timestamp: January 13, 2012, 02:32:45 pm
content: Hehe, I need to get my wife a new laptop before I buy any more multimeters. I saw this and it's price and it piqued my interest.So far it seems like the Appa brand is nonexistent in the US, and very hard to find online in Europe. I'm seeing a lot of buzz in Poland and Russia about them and the price is actually pretty darn good for the Appa 109N, which looks like the updated and waterproofed version of the Benning MM11. It costs about half what the Benning costs. Oddly enough, even the Benning MM11 costs a lot less in Poland than it does here in the US. The Benning website here has a price of $647 while in Poland it can be had for $486 with VAT.

author: enz
author_rank: Regular Contributor
timestamp: January 13, 2012, 02:41:42 pm
content: Hello PetrosAQuote from: PetrosA on January 13, 2012, 02:32:45 pmBenning is sold in Germany bywww.reichelt.de,www.conrad.bizandwww.elv.de.But i have no experience with the Benning products.Regards, Martin
new rigol firmware out in the wild? - Page 1
Forum section: electronics / general

author: matthewell
author_rank: Newbie
timestamp: January 13, 2012, 11:10:17 pm
content: I recently bought a cheap Rigol ds1052e since it seemed a very good buy for a beginner, so i thought i would upgrade it to 100mhz as many other people have done but when i checked the firmware version it turned out to be 00.02.06.00.01 which i can’t find any record of so far. Just thought the community would be interestedThanksMatt

author: amspire
author_rank: Super Contributor
timestamp: January 13, 2012, 11:20:27 pm
content: You can convert from 2.06.https://www.eevblog.com/forum/index.php?topic=553.885There are some links to the downgrade files that hopefully still work, but if not, A Hellene has the instructions on how to patch files to do the downgrade.https://www.eevblog.com/forum/index.php?topic=553.msg70378#msg70378https://www.eevblog.com/forum/index.php?topic=553.msg70381#msg70381Once you get back to V2.02 Sp2, you are able to change it.Richard

author: matthewell
author_rank: Newbie
timestamp: January 14, 2012, 07:12:05 pm
content: ah thanksstrange that i couldn't find any reference to it on the internet when i had a look.
Makerbot Replicator - Page 1
Forum section: electronics / general

author: SteveUK
author_rank: Contributor
timestamp: January 10, 2012, 03:35:34 am
content: http://www.makerbot.com/blog/2012/01/09/introducing-the-makerbot-replicator/Looks like they've taken Dave Jones advice and will be supplying the new model ready-made. The knobblyness of the models always puts me off though. I suppose this kind of extrusion-based 3D printing is always going to produce visibly knobbly models.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: January 10, 2012, 09:02:13 am
content: Wonder if they've speeded it up to cope with the larger build area

author: kaz911
author_rank: Super Contributor
timestamp: January 10, 2012, 10:45:23 am
content: High Resolution home print - in development:http://3dhomemade.blogspot.com/2011/03/venus-20.htmluses expensive liquid resin.Better resolution MakerBot :http://blog.ultimaker.com/I found one more but .. cant find it right now.Found it : UP Printer :http://pp3dp.com//Kasper

author: SoftwareSamurai
author_rank: Regular Contributor
timestamp: January 10, 2012, 02:59:59 pm
content: Quote from: kaz911 on January 10, 2012, 10:45:23 amAlthough this uses expensive liquid resin, I like the technology approach here the best. The resolution is absolutely fantastic, and the whole setup isn't all that complex. And watching something emerging from that liquid tank is totally mesmerizing!