hybridfree/eevblog-posts huggingface dataset:
Element 14 (AUS) Free Shipping Until Next Friday! (no min spend required) - Page 1
Forum section: electronics / general

author: metalphreak
author_rank: Frequent Contributor
timestamp: November 03, 2013, 08:20:13 am
content: Not sure if this is limited to particular accounts. I couldn't find anything specific or t&cs. It did have my account number and email address in the link though.Just put FREESHIPFRIDAY in the special instructions box when checking out. No need to hit the $45 min spend for free shipping

author: GeoffS
author_rank: Unknown
timestamp: November 03, 2013, 11:24:21 am
content: I never seem to have any trouble exceeding the $45 limit

author: M. András
author_rank: Super Contributor
timestamp: November 03, 2013, 11:54:42 am
content: yeah problem is you have to pay it

author: SeanB
author_rank: Super Contributor
timestamp: November 03, 2013, 02:06:01 pm
content: Quote from: M. András on November 03, 2013, 11:54:42 amI know the feeling, just got the CC love note. Good news is I can use the one card to pay the other ;(At least I did pick up a Rhino note in the gutter last week cleaning out a rats nest, they brought it in, I washed it and sent the pinkies off to their new home at the rubbish dump as a consolation prize, and left some nice pink food for the foot long mother rat as a thank you note.

author: tszaboo
author_rank: Super Contributor
timestamp: November 03, 2013, 04:19:20 pm
content: Wow, there are parts of the world where you have to pay for Farnell orders? That is sad.

author: SeanB
author_rank: Super Contributor
timestamp: November 03, 2013, 05:18:31 pm
content: Quote from: NANDBlog on November 03, 2013, 04:19:20 pmRS has a minimum order amount here as well, since they closed my local trade counter. Either order over around $80 or pay the courier fee for the overnight delivery.

author: metalphreak
author_rank: Frequent Contributor
timestamp: November 04, 2013, 12:23:21 am
content: I use RS components for small orders because they do free shipping with no minimum in aus. E14 stopped doing free shipping when the raspberry PI rolled out...
Amontec Bust?? - Page 1
Forum section: electronics / general

author: Hardcorefs
author_rank: Regular Contributor
timestamp: October 29, 2013, 09:28:16 am
content: Hi,I placed an order with the Amontec (http://www.amontec.com) company back in early October.No replies to email (actually the email account is all over quota), fax and even the phone just rings out.Anyone live nearby can check this out?

author: Hardcorefs
author_rank: Regular Contributor
timestamp: October 30, 2013, 01:11:27 am
content: Anyone have a recent order satisfied by the company?

author: Stonent
author_rank: Super Contributor
timestamp: October 30, 2013, 02:09:57 am
content: I've not heard of them before, but they do have a Facebook page. Companies seem to be pretty attentive to complaints on their Facebook page.

author: Short Circuit
author_rank: Frequent Contributor
timestamp: October 30, 2013, 03:03:06 am
content: Thanks for reminding me.Placed an order back in september, but have not received anything so far.

author: tszaboo
author_rank: Super Contributor
timestamp: November 03, 2013, 04:41:05 pm
content: The same moment I went for that webpage, there was a strange popup window for Java upgrade. Never seen anything like it, and according to windows Java is up to date on my PC. I believe the website has a virus. Can you remove the link please?

author: daveshah
author_rank: Unknown
timestamp: November 03, 2013, 04:51:43 pm
content: Quote from: NANDBlog on November 03, 2013, 04:41:05 pmWhen I go to the site, Firefox tells me that my version of Java is out of date, but as far as I can tell the site does not have anything wrong.

author: Rufus
author_rank: Super Contributor
timestamp: November 03, 2013, 05:07:40 pm
content: Quote from: Hardcorefs on October 29, 2013, 09:28:16 amI though they have long had a reputation for slow delivery, lack of communication, and high delivery charges.

author: Simon
author_rank: Unknown
timestamp: November 03, 2013, 08:08:23 pm
content: clicking on the links for me took me to what seems to be genuine mozilla update page. fired up java from my machine and indeed I'm out of date
A t-shirt about blowing fuses - by Chris Gammell - Page 1
Forum section: electronics / general

author: kizzap
author_rank: Unknown
timestamp: November 03, 2013, 07:04:59 am
content: I don't think anyone has mentioned this yet, but Chris Gammell uploaded another T-shirt design to teespring, one which I find quite hilarious:http://teespring.com/blowmyfuseI wonder what the chances are of this getting produced.-kizzap

author: EEVblog
author_rank: Unknown
timestamp: November 03, 2013, 07:11:39 am
content: I didn't know that was Chris's design, thought he just found it somewhere.

author: metalphreak
author_rank: Frequent Contributor
timestamp: November 03, 2013, 08:14:04 am
content: I see teespring still haven't fixed their international shipping prices when checking out using Paypal

author: kizzap
author_rank: Unknown
timestamp: November 03, 2013, 09:28:40 am
content: Quote from: EEVblog on November 03, 2013, 07:11:39 amhttps://twitter.com/Chris_Gammell/status/396064216731246592
Service Manual for Panasonic TH-L19X10AS - Page 1
Forum section: electronics / general

author: jmcdonald
author_rank: Contributor
timestamp: November 02, 2013, 01:06:11 pm
content: Just got this TV to have a look at from my dad. It is rapidly flashing an orange LED on the power LED.Hoping for a couple of bulging caps or something simple anyway no such luck.Everything looks ok no labels for voltages from the power supply to test and wondering if anyone could help me out maybe with a service manual or a common fault for this model.

author: andtfoot
author_rank: Unknown
timestamp: November 02, 2013, 01:16:56 pm
content: elektrotanya.com/panasonic_th-l19x10ak_ap_as_chassis_km01.pdf/download.htmlDownload link is below the preview picture.I haven't checked it personally, but it's worth a shot.It might be worth swapping out some of the smaller electrolytic caps in the power supply anyway. They can develop high ESR without obvious bulging, etc.Otherwise, wouldn't have a clue sorry...

author: jmcdonald
author_rank: Contributor
timestamp: November 02, 2013, 08:01:23 pm
content: Thanks for your help will hopefully get time to look at it again today.

author: jmcdonald
author_rank: Contributor
timestamp: November 03, 2013, 06:46:39 am
content: I think the power supply is ok found 2 x 100uf reading low on the ESR meter so replaced them. 12v rail seems to dip when the inverter for the back light tries to starts.First time I've uploaded photos and attachments not sure if I've done it right.The current going to the inverter when it tries to start. (Across a 1R resistor)Peaks at 280mA and lasts for 4msThe voltage at the main inverter ic the circuit tries to start every 5.2 seconds.The 12v rail and the start signal for the inverter.

author: jmcdonald
author_rank: Contributor
timestamp: November 03, 2013, 06:50:08 am
content: Ok I see how the image and attachments work.
[Melbourne] Eurisko discover by doing show 2 & 3 November 2013 - Page 1
Forum section: electronics / general

author: vk3yedotcom
author_rank: Frequent Contributor
timestamp: October 07, 2013, 10:11:15 am
content: http://euriskomelbourne.com/Could be interesting for those who enjoyed the Mini Maker Faire event held in Jan 2012.Similar concept but a little broader.

author: vk3yedotcom
author_rank: Frequent Contributor
timestamp: October 31, 2013, 07:30:24 pm
content: Couldn't find a list of exhibitors on their website but some clues are around the web and their twitter feed at:https://twitter.com/euriskomelb* hobby rocketry* robotics* steampunk* various hackerspaces* darning (clothes repair)* amateur radio(and much more)

author: vk3yedotcom
author_rank: Frequent Contributor
timestamp: November 02, 2013, 07:17:20 pm
content: Video atMore of the same today
BTTF Oscilloscope - Page 1
Forum section: electronics / general

author: IanJ
author_rank: Unknown
timestamp: November 04, 2013, 07:44:19 pm
content: Hey Dave........know you are a fan......don't know if you ever noticed the Telequipment S57B oscilloscope.Ian.

author: kfitch42
author_rank: Frequent Contributor
timestamp: November 04, 2013, 08:23:25 pm
content: Is that an S51B ?http://www.radiomuseum.org/r/telequip_oscilloscope_s51bs_51.htmlGoogle doesn't seem to know of an S57B, to the best of my Google abilities.

author: Stonent
author_rank: Super Contributor
timestamp: November 04, 2013, 08:31:47 pm
content: Marty had better be careful, I heard there's aslightchance of overload.

author: IanJ
author_rank: Unknown
timestamp: November 04, 2013, 08:34:37 pm
content: Quote from: kfitch42 on November 04, 2013, 08:23:25 pmYou might be right.....the Ebay ad I saw just listed it as a S57B.......probably a typo.Ian.

author: KJDS
author_rank: Super Contributor
timestamp: November 05, 2013, 09:27:58 am
content: The last time I used one of those, Kylie was still in Neighbours and the compact disc hadn't been invented.
BGA Reworkstation - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: November 01, 2013, 04:33:02 pm
content: sub $2000 rework station anygood ?

author: Alphatronique
author_rank: Regular Contributor
timestamp: November 01, 2013, 07:27:11 pm
content: Hii own a HONTON HT-R390 for over 2 Year and very happy whit ittrue convection (Hot AIR) with IR board preheater for remain of the boardmost low cost unit use IR for main heating but that not goodIC was black so absorb heat but solder was shinny so reflect the IRBest regard

author: wraper
author_rank: Unknown
timestamp: November 01, 2013, 08:54:34 pm
content: Quote from: Alphatronique on November 01, 2013, 07:27:11 pmHow can solder reflect IR if it is under the chip? You are heating the chip itself and PCB around it in both cases.

author: Alphatronique
author_rank: Regular Contributor
timestamp: November 01, 2013, 10:44:13 pm
content: Hinaturally you not alway rework BGA or QFN ...rework QFP and other part on a Rework imply less thermal stress to board and partthat do it whit other way ..

author: wraper
author_rank: Unknown
timestamp: November 01, 2013, 11:12:20 pm
content: I usually don't bother to use IR station for anything but big BGA. It is faster to just use small hot air preheater and hot air gun for such cases.

author: Hypernova
author_rank: Unknown
timestamp: November 02, 2013, 03:39:57 am
content: Didn't realize how much progress Dragon Group came in the years since I bought their Kada 862D++, which now seems to have disappeared from their main website.http://www.chinaemall.biz/main/page_products_kada_862d.htmlI have an unboxing thread of thathere.

author: all_repair
author_rank: Frequent Contributor
timestamp: November 02, 2013, 04:49:11 am
content: There are so many kind available and I have watched lot video on youtube. Some says with IR it is easier on plastic parts, i.e. connector. Is it true? It is not easy to do small surface mount connector. For reflow, is it easier to do that with IR instead of hotair, so save a lot of taping of foil on unprotected parts? One more question to shoot: how to do a reflow or rework profile for any board with a particular machine? I am trying to learn as much as possible before actually getting a machine (bought too many machines that are left idle as I do not have time to learn how to operate). Thanks, all ears here.
Sparkfun Ghost - Page 1
Forum section: electronics / general

author: con-f-use
author_rank: Unknown
timestamp: October 31, 2013, 04:06:20 pm
content: So what's the deal with the SparkFun Ghost? Are you supposed to catch it?Nothing happens when you click on it. I found the easiest way to get it is to scroll down with the mouse wheel, wait till it comes, then scroll up again and click it. The source code doesn't give me much. Anyone wiser than me?

author: Jon86
author_rank: Frequent Contributor
timestamp: October 31, 2013, 04:11:53 pm
content: You're not looking hard enough at the code

author: con-f-use
author_rank: Unknown
timestamp: October 31, 2013, 05:02:11 pm
content: Okay, somehow I overlooked the comment -> Caesar encryption. Thanks!

author: Jon86
author_rank: Frequent Contributor
timestamp: October 31, 2013, 05:14:31 pm
content: No problem!

author: con-f-use
author_rank: Unknown
timestamp: October 31, 2013, 05:48:14 pm
content: Hmm... it says code already redeemed. But I only ever placed one order with spark fun and that was on freeday.

author: Jon86
author_rank: Frequent Contributor
timestamp: October 31, 2013, 06:19:09 pm
content: Ah well, it's only 10% off

author: con-f-use
author_rank: Unknown
timestamp: October 31, 2013, 09:16:42 pm
content: Yes, so even with the discount sparkfun's still not at regular prices.

author: Jon86
author_rank: Frequent Contributor
timestamp: November 01, 2013, 10:50:18 pm
content: Indeed. I've never bought anything from them and I'm not planning to...
Random solar panel price question - Page 1
Forum section: electronics / general

author: s_lannan
author_rank: Contributor
timestamp: November 02, 2013, 01:18:29 am
content: Didn't know exactly where to post this so here goes.Wanted a 100w or so solar panel to play around with, Jaycar do a 120w panel for $300 AUD, ebay wants $111 AUD shipped from an Australian seller of a 100w panel ozplasma.living. Which one is more dodgy? Anyone have experience with either?

author: Orogen
author_rank: Newbie
timestamp: November 02, 2013, 07:23:57 am
content: I'm sure you are looking at two different technologies: poly, mono, amorphous. If you are just looking to get one to play around with I'd go with a cheap one. You could also get cheap cells off ebay and configure a panel with your desired IV characteristics. That might be fun to solder up the cells, bypass diodes and encapsulate it. Building your own probably wouldn't be much cheaper, or as good as most; but if you just want to play around could be fun.

author: s_lannan
author_rank: Contributor
timestamp: November 02, 2013, 07:34:29 am
content: Welcome to the forum! I might have a chat with a few of the sellers.
Samsung i9500 (S4)  LCD technical details - Page 1
Forum section: electronics / general

author: Jane
author_rank: Frequent Contributor
timestamp: October 31, 2013, 09:28:59 pm
content: Does anyone know where I can find some technical data ( e.g. connector schematic) for Samsung i9500 (S4) LCD ?That LCD uses super amoled technology and is used in mobile phones.Thank you for help

author: tom66
author_rank: Super Contributor
timestamp: October 31, 2013, 09:57:01 pm
content: It's not LCD, it's OLED. Different tech entirely. I'd imagine that's a proprietary Samsung part so... no.

author: amyk
author_rank: Super Contributor
timestamp: November 01, 2013, 11:59:55 am
content: In all likelihood it's going to be a MIPI interface.To figure out the pinout, watch this video:

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: November 01, 2013, 12:24:21 pm
content: Links to MIPI specs herehttp://www.electricstuff.co.uk/nanohack.html
A new CAT rating needed for multimeters! - Page 1
Forum section: electronics / general

author: Lightages
author_rank: Unknown
timestamp: November 02, 2013, 04:32:29 am
content: After watching this video, I think all will agree we need a new CAT rating, CAT5. CAT5 is for those too stupid or insane to be allowed near electricity.What a scammer, or deluded nutbar, or both. I think we have a new candidate for "that crazy Aussie bloke".

author: SeanB
author_rank: Super Contributor
timestamp: November 02, 2013, 06:15:26 am
content: I knew a guy whose nickname was CAT5. Before his swan dive he was known as Flermuis or Muis ( bat or mouse), but after his accident involving a 2 storey fall and a face plant into the concrete paving..............Fun was he still had a drivers license for a tanker truck, and did a brain reset one day driving 30 tons of Avgas, aimed at the Albatross that was in need of fuel.

author: AmmoJammo
author_rank: Frequent Contributor
timestamp: November 02, 2013, 06:22:44 am
content: Mine says 9.5volts? lmao... although I may have grounded the meter to the mains groundedit: I hadn't watched his whole video....wait, upto 14 volts now!

author: Bored@Work
author_rank: Super Contributor
timestamp: November 02, 2013, 06:57:02 am
content: Guy did fell of the surfboard one time too many.

author: Stonent
author_rank: Super Contributor
timestamp: November 02, 2013, 09:03:33 am
content: There's a video to the side on a different channel that's the same video but a lot more crisp quality.So I had to look up what Earthing was and found this:Nothing like being constantly at ground potential so if I DO accidentally touch a live wire, I'll surely be dead.

author: G7PSK
author_rank: Super Contributor
timestamp: November 02, 2013, 09:28:03 am
content: I found this video that was suggested by u tube on the right far more interesting. It has real applications and not showing how to misuse and or misinterpret a multimeter.

author: staxquad
author_rank: Frequent Contributor
timestamp: November 02, 2013, 04:25:21 pm
content: that bloke needs to fly a kite during a thunderstorm"in the body"? no, on the surface of the bodywhat fool attaches foot long spikes on bare feet and purposefully sinks the spikes in the ground as he walks?he needs to put a spike in the ground because there's no conduction otherwisehe must live in Nimbin

author: GreyWoolfe
author_rank: Unknown
timestamp: November 02, 2013, 07:39:56 pm
content: I think he should wrap his entire body in aluminum foil and create his own personal farraday cage. He could probably sell them on his website

author: Alex
author_rank: Regular Contributor
timestamp: November 02, 2013, 07:55:18 pm
content: Bad news for tall people
Wrist Heater/Cooler??? - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: November 02, 2013, 06:30:03 am
content: Greetings EEVBees:--Please see below for a link to a very puzzling article about a device called "Wristify" which can apparently help a person acclimate to a hot or cold building. No doubt the device, having been designed at MIT, probably actually does something, but just what is impossible to tell from the article. It is not at all clear to me whether the device warm or cools one, or merely one perceptions, go figure. The article also mentions "hot and cold waveforms", go figure some more. If anyone can make heads or tails of this one, please comment.http://www.independent.co.uk/life-style/gadgets-and-tech/news/forget-your-jumper-this-thermoelectric-wristband-can-heat-or-cool-your-entire-body-8918320.html?origin=internalSearch"Horse sense is the thing a horse has which keeps it from betting on people."William Claude Dukenfield, W. C. Fields 1880 - 1946Best RegardsClear Ether

author: AmmoJammo
author_rank: Frequent Contributor
timestamp: November 02, 2013, 06:31:54 am
content: looks like a peltier tied to your wrist.... didn't bother reading the article

author: amyk
author_rank: Super Contributor
timestamp: November 02, 2013, 11:15:59 am
content: QuoteGreat way to get hypothermia/hyperthermia while feeling perfectly fine...

author: G7PSK
author_rank: Super Contributor
timestamp: November 02, 2013, 01:36:39 pm
content: I got the idea from reading the article that the idea was to strap a heat sink on your wrist to cool you instead of turning on the AC. A bottle of water poured over you would be more effective and better to look at on the female population.

author: Rufus
author_rank: Super Contributor
timestamp: November 02, 2013, 03:13:30 pm
content: Quote from: SgtRock on November 02, 2013, 06:30:03 amIt is a peltier and heatsink stuck on your wrist with wires going to a no doubt stupidly impractical power supply.Blood flow distributes heat around the body but to have a worthwhile effect a patch on your wrist would have to be uncomfortably hot or cold. The idea that it can make you think you are warm or cold is bollocks IMO.Trying to control the temperature of your body instead of the environment the body is in has merit because it requires much less energy. Stored energy in hot/cold water which is replenished every hour or two is much cheaper and practical, especially compared to inefficient peltier devices.
Lost a surface mount capacitor from my TL866CS programmer - Page 1
Forum section: electronics / general

author: sparkyuiop
author_rank: Newbie
timestamp: October 31, 2013, 07:42:57 am
content: Hello. I'm hoping someone may be able to help me find the capacitance rating for the "C60" capacitor that I accidentally knocked off the PCB and lost from my TL866CS programmer.I'm hoping it may also be possible to use a standard cap rather than the SMD type?At present when I power it on it says the over-voltage protection is on and fails the self check. The yellow LED does also no longer flash.Programming is still possible but it's not reliable.Any help much much appreciated.RegardsPhill Thorne

author: BravoV
author_rank: Super Contributor
timestamp: October 31, 2013, 07:56:06 am
content: Suggesting you to post this at the ->TL866 threadfor better exposure rather than this separated thread.

author: TMM
author_rank: Frequent Contributor
timestamp: October 31, 2013, 10:17:34 am
content: Looks like it might just be supply decoupling. Put a 100nF ceramic there and see if it works?

author: sparkyuiop
author_rank: Newbie
timestamp: October 31, 2013, 10:40:39 pm
content: Thanks to you both for your advise. I will try the cap suggested and if it doesn't work move the post. Thank you.
Component reference book(s) recommendations - Page 1
Forum section: electronics / general

author: vk2amv
author_rank: Unknown
timestamp: October 29, 2013, 09:49:31 am
content: Hi all,I am after a bit of advice.Many many moons ago while growing up I remember Dad had a bunch of quick component reference books.The main one I can think of is a Semiconductor reference book that had pretty much all of the general Transistors available at the time it was printed in it, and had an abridged datasheet for each one with the main specifications in it allowing a quick reference. (I cant remember the name of the book as it was lost in a fire)Think it was a page per component, it had basic specifications, and an image with a pinout. (Was good for transistors that I didn't know which pin was what)Now lately I have been printing out datasheets for common components I have around and been using and slowly compiling a folder.Now it is never a huge effort to do a search online for component datasheets if I want details of a transistor or something.But I was wondering if there are any good quick reference books around now days that does a similar thing to some of Dad's old reference books.I don't know what is out there now.But if I had a book sitting on the shelf that I could just pull off and open to find the basic specs of a component in quick time it would save me time looking up datasheets online.Even better if the book had equilivant component lists's too.A general semiconductor book would be nice of course, but if anyone has recommendations for other books that would be good too.Any suggestions on some good books to have a look for would be appreciated thanks.

author: wraper
author_rank: Unknown
timestamp: October 29, 2013, 09:55:58 am
content: You wold need tons of such books to include usable amount of components. Otherwise it would be useless as half of the time you will search datasheet in the internet after not finding in the book. And IMHO finding datasheet is faster than opening needed page in the book so no time saver at all.

author: Gall
author_rank: Frequent Contributor
timestamp: October 31, 2013, 11:52:00 am
content: My personal recommendation is to get one of these thick catalogues of the major distributors like Digi-Key. They list most important parameters of the components along with the price.Another good thing is sime SMT component identification handbook. My Russian one lists many useful ICs.

author: nctnico
author_rank: Super Contributor
timestamp: November 01, 2013, 01:29:25 am
content: Elektor has published several datasheet books which contain popular chips.
YT video I found. Transistors & The End of Moore's Law - Page 1
Forum section: electronics / general

author: wilfred
author_rank: Super Contributor
timestamp: October 30, 2013, 12:14:14 am
content: .

author: codeboy2k
author_rank: Super Contributor
timestamp: October 30, 2013, 04:42:17 am
content: good video. Simple explanation of how a MOSFET works and what the 22nm node means, and what to expect in the future...The last 3 seconds knocked me outta my chair. Why did they need to end with that high-frequency screeeching sound??

author: vtkkorhanjoh
author_rank: Contributor
timestamp: October 30, 2013, 10:57:11 am
content: Quite interresting! So in around 2020, chips will have to expan upwards og outwards to follow Moore's law, or the law breaks? I cincerely hope we have quantum processors fully developed by then, because if not, CPU prices will go through the roof! Let's hope that never happens!
Dumpster diving. - Page 1
Forum section: electronics / general

author: davelectronic
author_rank: Frequent Contributor
timestamp: October 29, 2013, 08:00:35 am
content: Given you get permission can anyone suggest a good source of high current low voltage linear transformers, typically under 24 volts or less.I was wandering could there be a redundant dead product i've missed. Ok i know most modern gear thrown out containing its power unit is smp, but just wandering if there's some dead product i might have over looked. I have a good selection of industrial estates locally , as a regular face up there in my local town permissions should be easy. Any product suggested appreciated.

author: Kjelt
author_rank: Super Contributor
timestamp: October 29, 2013, 09:53:27 am
content: Try the "disco" lighting fixtures, they have these 24V 200W+ halogen lamps that only burn 50 Hours and they all are being replaced with led based lighting.The few I opened had a huge 24V 250W transformer built in, however usually not the best quality, but they work.

author: poorchava
author_rank: Super Contributor
timestamp: October 29, 2013, 11:15:26 am
content: decommissioned halogen lighting systems. I have some 12 VAC 400VA+ transformers pulled out of those.

author: dr.diesel
author_rank: Super Contributor
timestamp: October 29, 2013, 11:32:06 am
content: Define high current? We talking 5 amps or 500?

author: NiHaoMike
author_rank: Super Contributor
timestamp: October 29, 2013, 02:33:39 pm
content: Rewind some microwave oven transformers?

author: davelectronic
author_rank: Frequent Contributor
timestamp: October 30, 2013, 01:46:29 am
content: Thanks for the tips so far, some ideas leads to follow up there"define high current" ok normally above 10 amps minimum and up to say 50 amps some times more, for use of linear HF Amplifiers and related radio gear.Yes i've got a MOT ready for winding, although constantly reminded how inefficient its going to be, but i'l try it at the very least, its really tight on winding space to increase the primary for efficiency.But thanks for the ideas, any others welcomed and appreciated, i don't mind admitting enjoying scavenging, even getting a buzz out of it, legal of course.

author: NiHaoMike
author_rank: Super Contributor
timestamp: October 30, 2013, 02:05:01 am
content: Since microwave oven transformers can be found for free, use them in pairs so the primary sees half voltage. Efficiency should then be pretty good.
Big battery test .. - Page 1
Forum section: electronics / general

author: ErikTheNorwegian
author_rank: Frequent Contributor
timestamp: October 29, 2013, 08:57:36 pm
content: A N

author: mariush
author_rank: Super Contributor
timestamp: October 29, 2013, 09:14:10 pm
content: In case anyone else is interested in the subject, here's :http://www.batteryshowdown.com/It's made by a member of this forum and another forum I frequent.
Phonebloks modular smartphone: feasible or not? - Page 1
Forum section: electronics / general

author: dog80
author_rank: Regular Contributor
timestamp: October 31, 2013, 03:21:57 pm
content: https://phonebloks.com/It is about a modular phone where everything (camera, CPU, memory) is swappable and upgradable.It also seems that Motorolais examining the whole concept.Is it feasible? And I mean feasible exactly as presented in the video, not in some half baked way where the modules can only be a certain size and fit into specific positions.Opinions?

author: Unknown
author_rank: Unknown
timestamp: October 31, 2013, 04:00:50 pm
content: This has been discussedseveraltimesalready.
AA 3.7v Lithium Ion batteries - Page 1
Forum section: electronics / general

author: Stonent
author_rank: Super Contributor
timestamp: October 28, 2013, 07:16:18 pm
content: I saw at Walmart the other day that they were selling AA 3.7V Lithium Ion batteries. While I like that the common size would make it easy for someone like me to integrate it into a design, it does concern me about the general public using them incorrectly.It does have a warning on the package not to use them in normal AA devices. But I wonder what happens after the box is gone and someone grabs a few of them and installs them in something else, or tries to charge them in a NiMH charger.So one half of me likes says "Yay! Easy to integrate Li-Ion battery!" the other half of me is waiting for the news report of some kid's Tonka truck catching fire because of these batteries being installed.

author: IanB
author_rank: Super Contributor
timestamp: October 28, 2013, 07:18:11 pm
content: I think they would be 3.2 V cells for solar lights?The are fairly safe and low energy.

author: Stonent
author_rank: Super Contributor
timestamp: October 28, 2013, 07:24:54 pm
content: Quote from: IanB on October 28, 2013, 07:18:11 pmOk you may be right on the 3.2 and yes I did see a mention for solar lighting. I don't remember what the mAH rating was but I thought it seemed rather low.

author: IanB
author_rank: Super Contributor
timestamp: October 28, 2013, 08:09:59 pm
content: Here's a link to a test I did on an earlier version of these cells from around 2010:http://www.candlepowerforums.com/vb/showthread.php?263630-Investigating-the-Westinghouse-3-2-V-AA-LiFePO4-cellsAt the time they performed according to their label.However, in keeping with Walmart's relentless pressure to drive down supplier costs I think the ones you might find on the shelf now are not likely to perform as well. I may perhaps pick up a few to test and see how things have changed.

author: NiHaoMike
author_rank: Super Contributor
timestamp: October 29, 2013, 12:32:22 am
content: And the maximum charge voltage of a LiFePO4 battery nicely matches with the maximum operating voltage of a 3.3V microcontroller...

author: iloveelectronics
author_rank: Frequent Contributor
timestamp: October 29, 2013, 01:04:22 am
content: Aren't they called the 14500 batteries? I think there are both 3.7V and 3.2V variants, not sure about the difference in chemistry though.

author: Stonent
author_rank: Super Contributor
timestamp: October 29, 2013, 01:06:42 am
content: Yes I have since learned they are called 14500 batteries.

author: Stonent
author_rank: Super Contributor
timestamp: October 29, 2013, 01:15:17 am
content: Quote from: IanB on October 28, 2013, 08:09:59 pmI don't recall the brand this time, but they were over by the mutimeters at the store that I was in.

author: IanB
author_rank: Super Contributor
timestamp: October 29, 2013, 02:03:52 am
content: Quote from: Stonent on October 29, 2013, 01:06:42 amThe "14500" designation is primarily to distinguish them from 1.5 V batteries. They are indeed the AA size, but if you don't label them as AA people will be less tempted to use them in 1.5 V devices and let the magic smoke out...
New DSO - And A Discovery - Page 1
Forum section: electronics / general

author: Whuffo
author_rank: Regular Contributor
timestamp: October 29, 2013, 09:23:38 am
content: My new Rigol DS1052E arrived today; quite a bargain at $285 US. I'd like to thank Dave for letting me know about this piece of equipment, and also thank Gizmo for making it so easy to improve it.It came with a funny power cord that fits some socket I've never seen - so I just popped the cord out of my USB hard drive. That drive had quit working a while back; gotta fix that one day. Same IEC connector so plug the scope in and power it up. Looks good; switch the menus into English and unpack the probes. About 30 seconds after power up, the scope died - totally dead.I was almost disappointed - but the EE genie said "not a coincidence" and I gave that power cord a wiggle. No change. Hmmm - went to the wire bin and fetched out another power cable, plugged it in and the scope sprang back to life. A bad IEC cord - don't see that very often - and now I know why the USB hard drive quit working.The delicious smell of new equipment is in the air as I exercise the various features of this cute little scope. It'll do everything I need a scope to do and won't take up a lot of space.
How to not take auction item pictures... - Page 1
Forum section: electronics / general

author: HooRide
author_rank: Regular Contributor
timestamp: October 29, 2013, 03:51:13 am
content: So I was just browsing eBay for McIntosh amplifiers and stumbled upon this gem:http://www.ebay.com/itm/McIntosh-MC7106-Amplifier-6-Channel-Power-Amp-MC-7106-/131031208577?pt=Vintage_Electronics_R2&hash=item1e82119281Anyone want to ask him what his favorite beer is?

author: Vgkid
author_rank: Super Contributor
timestamp: October 29, 2013, 04:04:07 am
content: I will agree with you there, another one is when the item is either sideways or upside down.

author: edpalmer42
author_rank: Super Contributor
timestamp: October 29, 2013, 05:19:57 am
content: Whatever his favorite beer is, he apparently was imbibing a bit too much when these pictures were taken. I can't understand people who are trying to sell something and then post small, fuzzy, dark pictures that don't show you anything. And then they say something totally witless like "See the pictures for details."Ed

author: amyk
author_rank: Super Contributor
timestamp: October 29, 2013, 06:26:38 am
content: Not the first time...

author: AndyC_772
author_rank: Super Contributor
timestamp: October 29, 2013, 07:54:53 am
content: I'm not even sure he wants to sell it at all:QuoteDoes anyone else read this as "looks nice but doesn't actually work - tough luck"?
One of my monitors is dying in a strange way - Page 1
Forum section: electronics / general

author: iceisfun
author_rank: Regular Contributor
timestamp: October 27, 2013, 10:16:14 pm
content: One of my pc displays is dying in kind of a strange wayThoughts anyone?

author: NiHaoMike
author_rank: Super Contributor
timestamp: October 28, 2013, 12:49:11 am
content: Check the caps.

author: iceisfun
author_rank: Regular Contributor
timestamp: October 28, 2013, 09:30:01 pm
content: This only happens when its plugged into my primary PC, tried all 4 outputs on the video card (DVI, DVI, HDMI, DP)Plugged into a laptop its fine, although it could only hit 1600x900 res and "1080" over a hdmi cable which was sampled, but still no artifacts

author: tom66
author_rank: Super Contributor
timestamp: October 28, 2013, 09:31:07 pm
content: Quite possibly bad video RAM if it even has separate RAM.

author: iceisfun
author_rank: Regular Contributor
timestamp: October 28, 2013, 09:47:50 pm
content: its a GTX 680http://www.newegg.com/Product/Product.aspx?Item=N82E16814121635

author: rexxar
author_rank: Frequent Contributor
timestamp: October 29, 2013, 02:26:12 am
content: Quote from: iceisfun on October 28, 2013, 09:30:01 pmSo you get a bad image on every output of your graphics card, but not from your laptop? That makes me think it's your graphics card, but your other monitor isn't doing it? Are they the same model?

author: fluxcapacitor
author_rank: Frequent Contributor
timestamp: October 29, 2013, 03:33:22 am
content: If the monitors are the same you could swap parts over.I`d try swapping the mainboard over first after a quick visual inspection of the power board.Then the power board.If theres no change after that it could be the TCON.

author: NiHaoMike
author_rank: Super Contributor
timestamp: October 29, 2013, 03:38:54 am
content: If the EDID got corrupted (or defective in the first place), it can cause all sorts of confounding problems.
Looking for a book on SMPS design - Page 1
Forum section: electronics / general

author: TimNJ
author_rank: Super Contributor
timestamp: October 28, 2013, 04:49:01 pm
content: Hi everyone,I'm a freshman electrical engineering student. For our introduction EE class, we were assigned to write a research paper (in scientific journal style) about a specific topic. The topic I chose for myself was "Optimizing the performance, cost, and reliability of LED lighting fixtures".Since it's a first year course, the expectations for the paper are not that high, but nonetheless I want to learn a couple things for my own sake, namely how switch-mode converters work. I signed up for the U of Boulder Power Electronics course on Coursera, but it's been almost impossible for me to sit down and watch 3-4 hours of video during the week between school work and all of the legal activities I participate in.However, if I do ever get a chance to sit down and learn about power electronics, is there any one in particular that is well liked? I have a pretty good working knowledge of electronics. Nothing spectacular but enough that I can understand what's going on. Any fan favorites?Thanks.Tim

author: johansen
author_rank: Super Contributor
timestamp: October 28, 2013, 06:34:09 pm
content: http://homepages.eee.strath.ac.uk/~bwwilliams/book.htmdownload these, they are some of the absolute best electrical engineering books i've found.registration isn't needed, just change the following urs to download all the chapters.http://project.eee.strath.ac.uk/textbook/website/chapters/Chapter%201.pdfhttp://project.eee.strath.ac.uk/textbook/website/chapters/Chapter%2028.pdf

author: Neilm
author_rank: Super Contributor
timestamp: October 28, 2013, 06:54:23 pm
content: You might want to consider some points that apply in real life as well - in particular EMC requirements. Some of these will affect the design, possibly adversely but have to be taken in order to meet regulation requirements. Tim Williams has written some good stuff. Keith Armstrong has written some good articles that can be downloaded fromhttp://compliance-club.com/

author: TimNJ
author_rank: Super Contributor
timestamp: October 28, 2013, 07:13:43 pm
content: Thank you everyone!johansen in particular, those look fantastic!
Battery Arithmetic - Page 1
Forum section: electronics / general

author: steve30
author_rank: Frequent Contributor
timestamp: October 28, 2013, 04:06:11 pm
content: Often when I buy cells (aka "batteries"), the quantity tends to be an expression, rather than a value on its own. Today I bought 4+2 cells. Also available were some packs of 10+1 cells. I've also seen packs of 4+4 in shops, and on a website the other week I saw a pack of 16+16.Its a good job I know how to add
Hi to all members on this community - Page 1
Forum section: electronics / general

author: sadiawaqar41
author_rank: Newbie
timestamp: October 28, 2013, 09:48:09 am
content: Hi to all members on this community i am thanks to the administrator of this forum for approve my account i am sure here i got better knowledge thanks again.

author: Flump
author_rank: Frequent Contributor
timestamp: October 28, 2013, 10:15:00 am
content: hello welcome to the forum

author: Shock
author_rank: Super Contributor
timestamp: October 28, 2013, 10:23:32 am
content: Does signing up to 5 or more forums with the same welcome message make you a spammer?

author: GeoffS
author_rank: Unknown
timestamp: October 28, 2013, 12:06:00 pm
content: I stopped counting at 30!
Can the magnetic field from inductive charging damage hardware ? - Page 1
Forum section: electronics / general

author: openthomas
author_rank: Contributor
timestamp: October 27, 2013, 02:57:55 am
content: Can't help but notice how quick my phone (nexus 4) charges with Qi. What is the range of the magnetic field and what kind of interference and damage could I expect placing other hardware in it. How careful do I need to be where I place that charge pad ?

author: Maturola
author_rank: Contributor
timestamp: October 27, 2013, 04:02:41 am
content: the field is not always active, there is handshake with the receiver before it start transmitting.You don't have to worry about placing any other devices in to the of the pad and damaging.Even, in the case that the coil is active when you place another device, the magnetic field in there is not really that intense, it is designed to resonate with the receiver coil type only.You got nothing to worry about.

author: Psi
author_rank: Super Contributor
timestamp: October 27, 2013, 05:13:29 am
content: I have my phone in my pocket when working ~1meter from the tesla coil, and that throws out 300W or so into the air.Never has it damage the phone or even crashed it.Then again, it is a Nokia, they don't know how to fail.
"This digital electronic device is not a toy" - Page 1
Forum section: electronics / general

author: reagle
author_rank: Unknown
timestamp: October 26, 2013, 03:38:11 pm
content: This masterpiece showed up in the mail, attached to a local car dealership add. "Pull the tab, get a number and maybe you won a car"So naturally I took it apart . Enjoy! I don't think they even bothered current limiting..In the end I ended up with a free LED and a bunch of coin cell batteries that just happen to fit in my caliper

author: rexxar
author_rank: Frequent Contributor
timestamp: October 26, 2013, 03:54:30 pm
content: I got one of these too, it didn't have a fancy light spreader, it had two LEDs on either side of the code.I hate this kind of junk mail, but if it keeps the post office open, meh

author: reagle
author_rank: Unknown
timestamp: October 26, 2013, 04:00:24 pm
content: I got two, so that's two free LEds and four (probably crappy) coin cells for free

author: SeanB
author_rank: Super Contributor
timestamp: October 26, 2013, 04:09:00 pm
content: I take it you did not get the car...........

author: jolshefsky
author_rank: Regular Contributor
timestamp: October 26, 2013, 04:14:54 pm
content: Quote from: reagle on October 26, 2013, 04:00:24 pmNot particularly eco-conscious ... I think I looked into it a little and found the cell-type is supposed to be alkaline, so at least it's not mercury, but coming from China, who knows. I also found a company that makes these kind of things and they're obviously not winning any environmental awards — the whole point was how cheap they could make them.Quote from: SeanB on October 26, 2013, 04:09:00 pmWho wants toowna car? It took quite a few years of deliberate decision-making to get it set up, but I no longer need to own one and it's friggin' awesome!

author: reagle
author_rank: Unknown
timestamp: October 26, 2013, 04:20:49 pm
content: Well, if we compare me reusing the insides of these little monsters versus the remaining 99% of them going to trash directly, I think I am on the greener side of things
I guess I got a good deal... - Page 1
Forum section: electronics / general

author: Stonent
author_rank: Super Contributor
timestamp: October 26, 2013, 10:27:30 am
content: Picked up 2 ATMEGA48V-10AU chips for $1 each with free shipping from Korea. I happened to be on ebay again and now noticed they raised the price to $7.20 each with $3 shipping. Maybe they meant to sell them for $10 each with free shipping and made a mistake? Or maybe they sold out. Still for this chip $1 each sounds about right.http://www.ebay.com/itm/1pcs-x-ATMEGA48V-10AU-ATMEL/121197992778?_trksid=p2045573.m2042&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D27%26meid%3D2253098047919786222%26pid%3D100033%26prg%3D1011%26rk%3D1%26rkt%3D4%26sd%3D121197992778%26

author: echen1024
author_rank: Super Contributor
timestamp: October 26, 2013, 02:35:27 pm
content: The south Koreans are a greedy bunch. Selling used E3610As for $300, with LOCAL PICKUP ONLY...
Back to the future, did somebody see him ? - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: October 23, 2013, 05:58:50 pm
content: I found this on the Facebook, I don't know if the date is correct.If it is, did somebody see him ?

author: SArepairman
author_rank: Frequent Contributor
timestamp: October 23, 2013, 06:11:27 pm
content: there should have been some kind of crazy ass out of control party of the millennium on that day

author: dr.diesel
author_rank: Super Contributor
timestamp: October 23, 2013, 06:16:47 pm
content: Surprised I'd not heard this in other places, I looked it up:http://www.snopes.com/inboxer/hoaxes/bttf.aspDoesn't truly happen until 2015.

author: PA0PBZ
author_rank: Super Contributor
timestamp: October 23, 2013, 06:40:24 pm
content: I'm pretty sure it's today:

author: tom66
author_rank: Super Contributor
timestamp: October 23, 2013, 06:43:37 pm
content: No, it's October 21st 2015...

author: gregallenwarner
author_rank: Regular Contributor
timestamp: October 23, 2013, 09:32:28 pm
content: I've seen this hoax pop up on the net on at leastthreedifferent occasions, each with a different date. The actual date Marty travels to in the future isn't till 2015. Somebody keeps updating and rereleasing this image every few months.

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 25, 2013, 10:55:11 am
content: Man, I can't wait 2 more years waiting!

author: Tepe
author_rank: Frequent Contributor
timestamp: October 25, 2013, 12:19:48 pm
content: Quote from: ablacon64 on October 25, 2013, 10:55:11 amBuild a flux capacitor and a few other pieces into your car.
GTX 690 - two capacitors - Page 1
Forum section: electronics / general

author: tozo
author_rank: Newbie
timestamp: October 24, 2013, 10:25:59 pm
content: Hello, can someone please assist / help me, two capacitors on attached pic of 690GTX, do you know what type are those two, they are damaged / clipped off, and friend would replace those two if I am able to get some information. Any help would be really appreciated.Thank you,Tom

author: kizzap
author_rank: Unknown
timestamp: October 24, 2013, 10:57:56 pm
content: The only way that you will know for sure what capacitors they are is by reading the value of them out of circuit. If you have bust them up or lost them, then you might be shit out of luck.Your one possible saving grace though, which is to find the pin out of the IC those capacitors are next to, and hope and pray that they are decoupling caps(connected to the power pins and ground) and if they are, replace them with 0.1uF caps.-kizzap

author: wraper
author_rank: Unknown
timestamp: October 24, 2013, 11:39:42 pm
content: For sure they are not 0,1uF, Something more like 10+ uf, I think they might be ~22uF, at least with such capacitance it should work.

author: kizzap
author_rank: Unknown
timestamp: October 25, 2013, 04:17:10 am
content: Quote from: wraper on October 24, 2013, 11:39:42 pmTrue, I only got to look at the picture on my phone, and couldn't really see any detail on the picture. From what I can see, the two caps look like they are differing values too.The next best bet would be to find where they are connected to, and try find a datasheet for the component they are connected to, hopefully they might have something in the datasheet.

author: Psi
author_rank: Super Contributor
timestamp: October 25, 2013, 04:24:49 am
content: Assuming the capacitors have been lost i would look around the PCB for other capacitors of the same style/color/size then unsolder one and check it's value with the meter.(It's common for manufactures to use the same capacitor many times on the PCB to save on cost.)In all likelihood the value won't be super critical. It may even work fine without them.There's a good chance these caps are the same

author: ddavidebor
author_rank: Super Contributor
timestamp: October 25, 2013, 05:19:15 am
content: I see they're pretty close to that ic.Maybe in the datasheet you can find the suggested values of those capacitor.

author: amyk
author_rank: Super Contributor
timestamp: October 25, 2013, 06:14:01 am
content: Quote from: ddavidebor on October 25, 2013, 05:19:15 amGood luck trying to find datasheets for GPU parts...But I'll agree with the thought that they're decoupling caps.