hybridfree/eevblog-posts huggingface dataset:
Something Intel...? - Page 1
Forum section: electronics / general

author: RatshackGuy95
author_rank: Newbie
timestamp: May 31, 2016, 04:38:37 am
content: Hey thought I would post this. A relative gave me a box of old parts that he had laying around. I was going through it when I stumbled upon this. I can't really find any information on it and thought maybe you all could help. If the picture isn't clear there is a label printed on it that reads "INTEL MAGNETICS 1982 MADE IN THE USA" It also has a code written the opposite way "7110-4 THO02 8303DFBFBB9FBB3F77FFB9FBBFBFFFFFDFF7FF5FF7FFFFFFFFFFFFFFFFF7FBFDF77F" Thanks for the help, I really appreciate it.Image posted here:

author: coppice
author_rank: Super Contributor
timestamp: May 31, 2016, 04:44:26 am
content: Its bubble memory.

author: RatshackGuy95
author_rank: Newbie
timestamp: May 31, 2016, 04:46:27 am
content: Thanks, I feel kinda silly for not knowing. Anywho, much appreciated.

author: Kjelt
author_rank: Super Contributor
timestamp: May 31, 2016, 07:15:12 am
content: for those interested:https://en.wikipedia.org/wiki/Bubble_memory
I give you Computeraudiophile.com, for audiophoolery in the digital domain. - Page 1
Forum section: electronics / general

author: eas
author_rank: Frequent Contributor
timestamp: May 31, 2016, 05:37:16 am
content: Today I found myself on an audio forum reading batshit craziness (for reasons that are too long to get into a second time after my f'ing browser ate the post I'd already started), and I felt the need to share it with others who could appreciate it (ie, you, my fellow EEVblog forum denziens).I came to this audio forum by way of a Google search in the quest for information on the ICs used in some corning optical USB3 extension cables. Despite being devoid of the teardown analysis I was hoping for, the thread on said cables is priceless beyond measure, even by audiophool standards.Thisearly post contains a concentrated dose of dazzling digital-domain audiophoolery:QuoteNote: that he has his NAS on a linear PSU powered from mains by way of an isolation transformer!Another nice bit is that the "Gustard U12" is a device that exists to (unnecessarily) reclock the audio bitstream arriving over USB via the Corning extension cable which, he believes, has improved his system (in 4 out of 5 blind-tests he self-administered) by re-clocking the USB data. One might think repeated reclocking redudant, but not our commenter. He is aware of a "theory" that "using multiple re-clocking devices adds to sounds quality," testifying that "It certainly has in my system."The above commenter isn't alone, of course, his shares his capacity for self-delusion, and a number of other delusions, with many of the other commenters.Some are quite concerned that the opto-electric transceiver at the far end of cable receives power from the host-end over copper conductors, thereby tainting the purity and essence of the digital signal that emerges. Some had ordered ferrites to try and fix the problem, but I didn't bother finding out if it produced a noticeable (I didn't say measurable) result. I wouldn't be surprised if someone, somewhere, has started modding these cables to enable a separate supply for each transceiver for the very reasonable price of $300 (a 300% markup), not including the cost of the power supply (linear, natch, available for a modest $100 more).The thread in question has continued for over a year. Earlier this month, a commenter posted that he was using one of these Corning cable to connect to an external HDD enclosure, and what do you know, it made anobvioius difference in the sound of his system. In his own words:QuoteAll that said, I wondered if the whole site isn't an elaborate troll. If it is, it must to be computer generated, because there is a lot of activity. Perhaps more plausible is that a small minority of trolls is goading the rest of the participants into greater and greater extremes of self-deception and mass delusion.One way or another, its amazing and horrifying at the same time.
Rigol DS1104B - Page 1
Forum section: electronics / general

author: hhanoem
author_rank: Newbie
timestamp: May 30, 2016, 11:31:34 pm
content: Hi,Does anybody know where i can download the schematics for the Rigol DS1104B.Or does anybody know what type of ADCs are using for the four input channels?My scope has two problems. 1 channels trigger does not work.And 1 channel has constantly a supperposition square wave.Is this a software issue or hardware?regards, Henk
If ya play vidya games - Page 1
Forum section: electronics / general

author: T3sl4co1l
author_rank: Super Contributor
timestamp: May 30, 2016, 08:53:12 am
content: http://imgur.com/gallery/OWPzKI mean, I've been playing DOOM for over 20 years, and probably some of you here have too...And if not, you can always use an OS:Tim

author: lowimpedance
author_rank: Super Contributor
timestamp: May 30, 2016, 10:28:17 am
content: Quote from: T3sl4co1l on May 30, 2016, 08:53:12 amIs there a problem with that.. 'Space Marine' !

author: Delta
author_rank: Super Contributor
timestamp: May 30, 2016, 02:35:38 pm
content: Hur man! Whey aye, I remember that being pinned up in the work canteen back in the day liike...Having worked with people from all over the UK (and the world, in fact), it has long been a favourite of mine to write cheat-sheets and signs in the local vernacular. (And putting signs on doors near to emergency exits saying "NON-EMERGENCY EXIT")

author: HP-ILnerd
author_rank: Frequent Contributor
timestamp: May 30, 2016, 03:42:48 pm
content: As an artist, I have to say I have an issue with the placement of that boomerang.

author: eugenenine
author_rank: Frequent Contributor
timestamp: May 30, 2016, 08:08:09 pm
content: I remember Windows 2000 fondly. Was the last good windows.

author: XOIIO
author_rank: Super Contributor
timestamp: May 30, 2016, 09:34:47 pm
content: Quote from: eugenenine on May 30, 2016, 08:08:09 pm*grabs windows 7 branded torch*Now listen here fella, we don't take kindly to them words round these parts

author: eugenenine
author_rank: Frequent Contributor
timestamp: May 30, 2016, 09:59:17 pm
content: Quote from: XOIIO on May 30, 2016, 09:34:47 pmWell, I'm OT from the original thread but Win7 is on my work provided laptop and while its more stable than XP its not where 2000 was.
Mirror Mirror on the Wall - Page 1
Forum section: electronics / general

author: German_EE
author_rank: Super Contributor
timestamp: May 29, 2016, 11:31:43 am
content: I've finally decided that there is no hope, we're doomed. The following was posted on another forum:Does anyone know if it's possible to use a background that would essentially turn my computer monitor into a mirror? I have tried scanning a mirror and it doesn't work.

author: Ian.M
author_rank: Super Contributor
timestamp: May 29, 2016, 12:22:57 pm
content: If you haven't seen that for the last ten years you've been lucky:https://ca.answers.yahoo.com/question/index?qid=20060923202508AAKhUd3

author: HackedFridgeMagnet
author_rank: Super Contributor
timestamp: May 29, 2016, 12:35:32 pm
content: I think what they mean is like the iphone 'facetime' app.

author: Augustus
author_rank: Regular Contributor
timestamp: May 29, 2016, 01:08:41 pm
content: Well, computer technology constantly improves...

author: German_EE
author_rank: Super Contributor
timestamp: May 29, 2016, 04:42:23 pm
content: Ah! wondered what the original source was and Yahoo Answers seems to be a great way to spend a rainy Sunday.Is there a spell to become a mermaid that actually works?Why does my arm shake and turn bright red when I'm eating dirt?Are there birds in Canada?Do you think that NASA invented thunderstorms to cover the sound of space battles? (I like that one)Is there gravity in India?I could post more but I decided to leave it up to you to find the best ones

author: timb
author_rank: Super Contributor
timestamp: May 29, 2016, 09:50:45 pm
content: My all time favorite Yahoo! Answers, complete with Flash dramatization courtesy of Something Awful:Question:How is babby formed?how is babby formed?how girl get pragnent?Answer:They need to do way instain mother> who kill thier babbys. becuse these babby cant frigth back?it was on the news this mroing a mother in ar who had kill her three kids. they are taking the three babby back to new york too lady to rest my pary are with the father who lost his chrilden ; i am truley sorry for your lotshttps://youtu.be/Ll-lia-FEIY

author: Cubdriver
author_rank: Unknown
timestamp: May 30, 2016, 01:22:33 am
content: Quote from: timb on May 29, 2016, 09:50:45 pmThe truly frightening thing is that the people asking these questions are also likely busy forming 'babbys' of their very own!-Pat

author: lowimpedance
author_rank: Super Contributor
timestamp: May 30, 2016, 07:07:31 am
content: .............clearly the time has arrived to emigrate to a new planet.
What Power Supply Should I Use For A PC I'm Building - Page 1
Forum section: electronics / general

author: SuperShermanTanker
author_rank: Contributor
timestamp: May 30, 2016, 02:33:17 am
content: So I'm building a low powered Pentium G3258 build that has no graphics card out of spare parts i have for someone I know so they can play Minecraft, Roblox, and Robocraft and I have 2 power supplies but I don't know which one to use I have a 11 year old 250watt FSP group power supply that I pulled from a old 2005 ACER desktop and I also have a 700watt Apevia power supply that's only a year old I don't know which one to use and the build is not going to consume more then 150 watts under load so which one should I use

author: Whales
author_rank: Super Contributor
timestamp: May 30, 2016, 03:01:50 am
content: I would seriously recommend using the newer PSU. If you can't, then reduce your risks by inspecting and testing the 11 year old as much as you can:(1) Check the connectors. Does it actually have enough/the right CPU connectors? Is it using some horrible non-standard main connector?(2) Open it and visually look around, clean it out if it's dust filled. Checkbothsides of the PCB for blown parts, leaky/expanded/bulging caps and heat damage.I'm not sure of your level of confidence/experience: read about discharging mains input capacitors if you are not already familiar with identifying and dealing with them. Computer PSUs tend to have atleast one or two large 400V (or similar) electrolytics as well as smaller input filters (eg X-caps).(3) Run it without a load (bridge thegreen wire on the ATX connectorto ground). Measure all of the voltage rails (ripple too if you have a scope). Run it again only with a 12V load (as big as you can do). Measure the voltage rails.Some old designs required load on the 5V/etc rails for everything else to be stable and in spec. Your modern computer won't do that.

author: SuperShermanTanker
author_rank: Contributor
timestamp: May 30, 2016, 03:14:15 am
content: My experience with testing electronic boards isn't too good and all I have is a crappy cheap made in china tester that I wouldn't trust anywhere near a 400v rated cap I could test the lower power rails and I did dust it and looked at the caps throug the vents on the 11 year old power supply and they all seem fine

author: AF6LJ
author_rank: Unknown
timestamp: May 30, 2016, 03:48:40 am
content: if you are not going to buy a new PS then go with the year old PS.

author: Brumby
author_rank: Unknown
timestamp: May 30, 2016, 04:14:03 am
content: 11 years is a long time for a computer power supply. I would be anxious using it - especially if it's for someone else.The 1 year old is much less of a concern.

author: SuperShermanTanker
author_rank: Contributor
timestamp: May 30, 2016, 05:35:52 am
content: Thanks for the advice guys I wen't with the newer PSU and now I'm currently getting linux installed on it and it seems to be working great
Sorensen QHS40-5 Power Supply - manual - Page 1
Forum section: electronics / general

author: karasu74
author_rank: Newbie
timestamp: November 11, 2015, 12:02:34 pm
content: I have been looking for the manual for the Sorensen QHS40-5 power supply on the internet but could not find anything.I would appreciate if someone who has it, if you could send it to me.Thanks.

author: bsalai
author_rank: Regular Contributor
timestamp: May 29, 2016, 02:08:29 pm
content: Did you get any responses? I just picked one of these up at a flea market. I may have slightly overpaid, but it seems to work. Some of the capacitors look a bit leaky and I will replace those.The voltage goes up and down with the switch is on the front, and seems pretty close. I don't have a precise meter to check. The main problem seems to be that the pilot light doesn't light up. It looks like a bit of an odd arrangement, possibly in series with the primary of the power transformer. I could be wrong on that. Does anyone know what type of pilot light that might be?Brad
What is the name of those PCB connectors? - Page 1
Forum section: electronics / general

author: Marco
author_rank: Super Contributor
timestamp: May 28, 2016, 01:50:42 pm
content: JST XH.

author: ZeTeX
author_rank: Frequent Contributor
timestamp: May 28, 2016, 02:15:06 pm
content: Quote from: Marco on May 28, 2016, 01:50:42 pmThanks!
Cheap 2Mbit i2c EEPROM, recommendations? - Page 1
Forum section: electronics / general

author: Psi
author_rank: Super Contributor
timestamp: May 27, 2016, 01:18:59 am
content: Hi,Does anyone have a recommendation for a good value 2Mbit i2c EEPROM (5-10k volume)?Memory size could be a 1Mbit at a pinch.Strictly speaking it doesn't need to be eeprom but does need to be writeable without erasing other data, so flash is outThanks,

author: alank2
author_rank: Super Contributor
timestamp: May 27, 2016, 01:24:42 am
content: My go to one is:M24M02-DRMN6TPIt can do page writing of up to 256 bytes in a single write cycle, 4M write endurance, and ECC.It takes 10ms for a write cycle. I think the next smaller one (1mbit/128K) might have a 5ms write cycle, MPN=M24M01-RMN6TP

author: Psi
author_rank: Super Contributor
timestamp: May 27, 2016, 01:30:28 am
content: Thanks alank2Read/write speed isn't all the important for this application.
tesla needed, on mars - Page 1
Forum section: electronics / general

author: dannyf
author_rank: Super Contributor
timestamp: May 27, 2016, 09:30:32 am
content: well, if you thought climate change here is bad enough, look at what's happening on mars:http://www.latimes.com/science/sciencenow/la-sci-sn-climate-change-on-mars-20160523-snap-story.html

author: TinkerFan
author_rank: Regular Contributor
timestamp: May 27, 2016, 10:39:57 am
content: But the difference is, that on the Earth, there are billions of creatures around, that are affected by the climate. On Mars, there are just a few rovers cruising around from time to time and a change in the climate doesn't really affect them. But on Earth...

author: dannyf
author_rank: Super Contributor
timestamp: May 27, 2016, 01:08:14 pm
content: Aren't those rovers solar driven? so they are renewable energy powered, and that doesn't seem to have slowed down the man-made climate change there.
Survey to help evaluate a business model - Page 1
Forum section: electronics / general

author: Asparagus
author_rank: Newbie
timestamp: May 26, 2016, 04:21:04 pm
content: Dear Friends,We have an idea for a battery/power supply technology, and we need your help to evaluate the business and pricing model. The short survey below has only seven questions and will take less than a minute to complete. Your feedback will help us make important decisions regarding the direction and viability of this product. The survey is completely anonymous.https://docs.google.com/forms/d/1cSN9pLrDmgVnZg8Q0iNa7ru_kPCZkpFCIvxTl-4ept8/viewform?ts=5744cba4Thanks for your time.

author: stmdude
author_rank: Frequent Contributor
timestamp: May 26, 2016, 05:02:06 pm
content: Batteries that charge in <=5 minutes?Wow! Sounds awesome!Minor question though.. Why not become bazillionaires by selling this magical battery-tech to (for example) Panasonic, instead of building a USB power-bank?Just sayin'
For those coffee lovers - Page 1
Forum section: electronics / general

author: tautech
author_rank: Super Contributor
timestamp: May 26, 2016, 05:30:35 am
content: He SPILT some.

author: ZeTeX
author_rank: Frequent Contributor
timestamp: May 26, 2016, 02:16:15 pm
content: what

author: Len
author_rank: Frequent Contributor
timestamp: May 26, 2016, 04:45:06 pm
content: Oops, did I leave my webcam on this morning?
Professionals on ISS hard at work troubleshooting with DMM - Page 1
Forum section: electronics / general

author: Messtechniker
author_rank: Frequent Contributor
timestamp: May 26, 2016, 09:59:10 am
content: At this moment professionals on the ISS are hard at work troubleshooting a connector with a DMM.See current NASA live stream. Great to see that they have the same sort of problems as we mortals.Yours - Messtechniker

author: Messtechniker
author_rank: Frequent Contributor
timestamp: May 26, 2016, 10:03:29 am
content: And here the link:http://www.nasa.gov/multimedia/nasatv/#public

author: botcrusher
author_rank: Regular Contributor
timestamp: May 26, 2016, 10:31:47 am
content: Now they've got them plugged into an electronic pressure readout.This is cool, they're expanding A blow-up-module.

author: dannyf
author_rank: Super Contributor
timestamp: May 26, 2016, 10:50:56 am
content: Due to NASA budget cuts, they had to use those 3usd dt830 cllones bought off eBay,

author: Monkeh
author_rank: Super Contributor
timestamp: May 26, 2016, 11:27:14 am
content: Apparently they don't know how to turn APO off on their Flukes, so they're having a highly trained astronaut turn it off and on again every few minutes.

author: coldreactor
author_rank: Contributor
timestamp: May 26, 2016, 12:05:09 pm
content: Ya, a Picture of that setup is here.

author: Messtechniker
author_rank: Frequent Contributor
timestamp: May 26, 2016, 02:01:38 pm
content: @ Fluke experts:These Fluke 87s - are these off-the-shelf units or have thesebeen ruggedized in view of rocket launch vibrations?Yours - Messtechniker

author: Towger
author_rank: Super Contributor
timestamp: May 26, 2016, 02:28:27 pm
content: Quote from: Messtechniker on May 26, 2016, 02:01:38 pmLooks like the original Fluke 87, I dont see any 'Intrinsically Safe' markings. Like most space electronics once a version is space qualified they will stick with that version.A standard Fluke 87 would withstand a lot more vibrations than an person, so I doubt there is anything special done to them, except for extra testing/inspection for faults before launch.
Using a programmable power supply (DP832) as a smart battery charger? - Page 1
Forum section: electronics / general

author: BlueBill
author_rank: Regular Contributor
timestamp: May 23, 2016, 08:05:15 pm
content: Looking at all the advanced triggers on the Rigol DP832, it occurred to me that it should be possible to program it as a fast / smart battery charger.I'm still reading through the operators manual, but any thoughts or advice on how to go about it would be helpful.

author: Macbeth
author_rank: Super Contributor
timestamp: May 23, 2016, 08:26:11 pm
content: I use mine to charge my mobile all the time. Just set it to 5.5V and 2A, and I use the Samsung 2 resistor USB ID hack to enable fast charging. No triggers needed just leave it on it goes into trickle charge when 100% anyway. I did also have an Excel spreadsheet to log the current/time and make a nice dynamic graph. It would also switch the output off when the current got low enough to indicate a full charge.

author: BlueBill
author_rank: Regular Contributor
timestamp: May 23, 2016, 11:33:13 pm
content: Thanks, I've seen the resistor trick before and that's neat.I was trying to charge a 12V SLA battery, thought it might be fun to program a fast / trickle charge into it.

author: nctnico
author_rank: Super Contributor
timestamp: May 23, 2016, 11:37:27 pm
content: When charging a battery always use a series diode! If something goes wrong in the PSU a battery can push a lot of energy into a power supply and (best case scenario) fry it instantly.

author: BlueBill
author_rank: Regular Contributor
timestamp: May 23, 2016, 11:46:16 pm
content: Quote from: nctnico on May 23, 2016, 11:37:27 pmGood point.

author: lwatts666
author_rank: Unknown
timestamp: May 24, 2016, 06:39:13 am
content: I have used the DP832 to charge single Lithium Polymer cells in an emergency (provided their initial voltage is not too low).Set output voltage to 4.2V, current limit to 1A, and alarm trip to less than 30mA. Battery charges constant 1A current until it reaches 4.2V, then at constant voltage until the charge current drops below 30mA when the alarm sounds.Change the values given above to match the specs of your particular cell.Good advice about the series diode.
Can the eevblog posse please attack this shonkey bunch on twarts!!! - Page 1
Forum section: electronics / general

author: abaxas
author_rank: Regular Contributor
timestamp: May 23, 2016, 08:32:47 pm
content: https://www.vmbvoom.com/pitches/innovative-plastic-roadsThis has broken my bullshit-o-meter.Company has existed for less than a month.They don't provide any evidence.The main guy in charge sells NLP training courses.Come on scientists of eevblog. Lets rip them a new one.

author: edy
author_rank: Super Contributor
timestamp: May 23, 2016, 08:49:13 pm
content: Other than wasting perfectly good plastic that can be used for recycling into better things, I don't see anything wrong with this project. Don't they already throw old tires into roads? Plus there is no "electronic" stuff going on with it, so I don't see how EEVBlog forum members feel the need to jump on this.
Looking for a manual for a Commonwealth Scientific Ion Beam Controller, IBS-250 - Page 1
Forum section: electronics / general

author: macona
author_rank: Regular Contributor
timestamp: May 29, 2016, 08:19:16 am
content: Yeah, this is a total long shot but I am looking for the manual for a Commonwealth Scientific Corporation (CSC) Ion Beam Source Controller. Its basically a fancy multi output power supply that runs a kaufman type Ion Beam Source that is used in vacuum systems for cleaning substrates and ion milling/sputtering. I have the IBS-250 model but the manual looks to be mostly the same for the IBS-600 and IBS-1200. I have only managed to find a japanese manual so far. If worst come to worst I can have a friend translate but I would rather not.CSC was bought by Veeco but they have not gotten back to me about a manual, the power supply is about 20 years old now. A new replacement is over $10k.
Munich - Science and technology tourism advice - Page 1
Forum section: electronics / general

author: alex.m
author_rank: Contributor
timestamp: May 23, 2016, 06:44:35 pm
content: Hi,I am probably visiting Munich in the new couple of weeks. Any mandatory place to visit for an electronics enthusiast? Science, technology, history of technology, beer?Thanks.

author: pelule
author_rank: Frequent Contributor
timestamp: May 23, 2016, 07:04:27 pm
content: My recommendations:Deutsches Museumtechnology, natural sciences, lightning, aircraft, submarines, stars, physics.enough to spend several days...BMW Museum Münchenshows 125 years of BMW with many original cars, motorbikes and aircraftsArchäologische Staatssammlung120.000 years of archaeologyLandesamt für Digitalisierung, Breitband und Vermessungshows 200 years of measurements (Fraunhofer, Senefelder...)BRPeLuLe

author: German_EE
author_rank: Super Contributor
timestamp: May 23, 2016, 08:52:04 pm
content: http://hackaday.com/2014/11/16/the-computeum-one-of-the-biggest-computer-museums-in-germany/You may need an extra couple of days

author: CatalinaWOW
author_rank: Super Contributor
timestamp: May 23, 2016, 10:41:10 pm
content: The Deutches Museum is my favorite museum. Better than the Smithsonian. Like all good museums it cannot be absorbed in a day.
Connector Identification - Page 1
Forum section: electronics / general

author: @rt
author_rank: Super Contributor
timestamp: May 23, 2016, 08:04:40 am
content: Hi GuysI’m hoping someone recognises this connector from an early 90’s test board.It’s only using two conductors for a power supply, and i guess they just wanted it keyed.Looks to be the same pitch as PC drive power connectors, but I can’t find anything searching for Molex or AMP images.Cheers, Art.

author: xygor
author_rank: Regular Contributor
timestamp: May 23, 2016, 10:04:41 am
content: Looks like AMP "Commercial MATE-N-LOK"For example: 1-380999-0

author: @rt
author_rank: Super Contributor
timestamp: May 23, 2016, 01:03:01 pm
content: ThanksI think you’re right there, and have ordered a sample.
99 cent circuit - Page 1
Forum section: electronics / general

author: Bryan
author_rank: Frequent Contributor
timestamp: May 21, 2016, 09:35:01 pm
content: Worth probably one cent, but curious what exactly it is.Ebay item 222115456193

author: XOIIO
author_rank: Super Contributor
timestamp: May 22, 2016, 12:26:53 am
content: Not really much to go on, and sure as shit aint worth the shipping cost.

author: ez24
author_rank: Super Contributor
timestamp: May 22, 2016, 02:07:44 am
content: Quote from: Bryan on May 21, 2016, 09:35:01 pmNothing to go onOP if you want someone to look - please give a link

author: Halcyon
author_rank: Unknown
timestamp: May 22, 2016, 07:41:03 am
content: Link to the eBay item (now ended) is here:http://www.ebay.com.au/itm/ws/eBayISAPI.dll?ViewItem&item=222115456193For future reference, always provide a link or a screen shot in your posts. eBay item numbers are next to useless and most people won't be bothered looking them up.

author: ez24
author_rank: Super Contributor
timestamp: May 22, 2016, 05:14:04 pm
content: I thought you could put the number in the search box, but it does not work for meFunny the seller seems to be getting the most money from a penny

author: JacobPilsen
author_rank: Regular Contributor
timestamp: May 22, 2016, 05:39:49 pm
content: Short form is:ebay.com/itm/222115456193
Interesting idea for rechargable AA batteries - Page 1
Forum section: electronics / general

author: Halcyon
author_rank: Unknown
timestamp: May 22, 2016, 09:50:05 am
content: http://www.jaycar.com.au/Power-Products-Electrical/Storage-Batteries/Ni-MH-Ni-Cd-Rechargeable/AA-1200mAh-USB-Recharge-Batteries/p/SB1756I just thought it was simple yet clever. I realise you sacrifice some capacity for the charger circuitry, however it eliminates the need for bulky wall chargers.

author: TerraHertz
author_rank: Super Contributor
timestamp: May 22, 2016, 10:04:57 am
content: Yeah, not bad. If *only* they were 1.5V and not 1.2VIt doesn't seem to say, but I bet they are 1.2V.I have some small music players/WAV recorders, that I use a lot, that require 1.5V AAA cells. Dammit.

author: Muttley Snickers
author_rank: Unknown
timestamp: May 22, 2016, 10:07:24 am
content: They have been discussed before and here is one instance I found linked below and there maybe others, the Kickstarter page might be still around somewhere and they were new to me as well until I got shot down in flames, sharing the joy.https://www.eevblog.com/forum/blog/eevblog-751-how-to-debunk-a-product-(the-batteriser)/msg834827/#msg834827

author: Halcyon
author_rank: Unknown
timestamp: May 22, 2016, 10:23:36 am
content: Quote from: TerraHertz on May 22, 2016, 10:04:57 amI'd say they are 1.2v being Nickel-metal Hydrides.To be honest, they are the first ones I've seen with the charger built-in. That being said, I've never gone actively looking for them before (and this was no exception, I was actually just heading to Jaycar's website for an ADSL filter).But for applications like wireless keyboards, mice, doorbells, outdoor temperature sensors, clocks etc... it's a nice idea. Saves me having to buy a seperate NiMH AC wall/plug-in charger (which I don't have).

author: lapm
author_rank: Frequent Contributor
timestamp: May 22, 2016, 11:52:02 am
content: I remember seeing this sort of batteries advertised couple years ago. Except they had removable head and had normal usb plug in head to directly charge from any usb port...This iteration seems to require extra cabple...
Moon and mars hanging out together - Page 1
Forum section: electronics / general

author: JPortici
author_rank: Super Contributor
timestamp: May 22, 2016, 08:43:22 am
content: Too bad i didn't take pictures. Phone wouldn't have been up to the task for sure and can't find one (can't believe nobody took a photo)Last night, clear skies, particulary bright moon and this big red dot next to it.. That was mars! i don't think i ever saw it like that. Beautiful.It made me wonder. I'm 24 right now and i wonder if one day in the future i'll be looking again at both the moon and mars together, like last night and think about my grandchildren that'll be living their lives in the sky looking up to the moon and the old earth (and never call.)Pretty sure i won't be able to go there in my lifetime but..oh, one never stops dreaming

author: TerraHertz
author_rank: Super Contributor
timestamp: May 22, 2016, 09:59:27 am
content: http://earthsky.org/tonight/blue-moon-from-dusk-until-dawnhttp://apod.nasa.gov/apod/ap160521.htmlSomeone probably did take photos, and they may turn up on apod soon enough.
Wireless car phone charger with cooling? - Page 1
Forum section: electronics / general

author: Pack34
author_rank: Frequent Contributor
timestamp: May 28, 2016, 01:44:56 pm
content: To extend the life of my phone I switched over to wireless charging after the USB died after two years. Everything has been fine until I've been doing some long distance driving in my car. What appears to be happening is that the wireless charging can produce a lot of heat and this is shutting down the charging circuit in the phone. To be sure that my phone doesn't die I've found myself having to take the phone out of the mount, cool it off with the AC vent and then put it back in.It's not terribly inconvenient, but it should be unnecessary. Unfortunately, I'm having issues finding an off-the-shelf solution. I was able to find an article from a year ago about Chevy putting built-in systems in some of their 2016 models.http://www.carprousa.com/chevy-introduces-cell-phone-cooler-chargerI'm debating on modifying an existing mount to add a TEC and thermistor setup to cool the charger.Has anyone here had a similar issue and found a COTS solution, or modified something like this before? This isn't something electrically hard to do, just doubting my ability to make it neat enough to not look like a suspicious package on my dashboard.

author: Ian.M
author_rank: Super Contributor
timestamp: May 28, 2016, 01:53:57 pm
content: The Chevvy solution is probably just an extra vent from the existing A/C system.TECs for cooling suck, unless their hot side has a large thermal sink to dump waste heat into with minimal Rth_amb. Good luck building that in a dash-friendly package! Your cheapest/best option is probably to get the phone's USB repaired so you can charge by wire.
EgyptAir 804 ACARS Satelite Data Reports Smoke Dectection - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: May 20, 2016, 10:30:34 pm
content: Very interesting how sophisticated all this has gotten.Real time sensor data from the plane via satellite.http://www.cnn.com/2016/05/20/middleeast/egyptair-flight-804-main/index.htmlACARShttps://en.wikipedia.org/wiki/Aircraft_Communications_Addressing_and_Reporting_System
Russian Television ?????? 401 1976 - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: May 20, 2016, 12:58:35 pm
content: This thing was built like a T72.

author: ivaylo
author_rank: Frequent Contributor
timestamp: May 21, 2016, 07:08:44 am
content: Not really. Every apartment building had a guy who could repair them. Brand could be translated as "Youth". They were famous with thier portable sets. Like this onehttps://youtu.be/e1kaXVP1n0M
Fluke SmartView Software share? - Page 1
Forum section: electronics / general

author: orbiter
author_rank: Frequent Contributor
timestamp: May 20, 2016, 01:02:48 pm
content: Does anybody have a copy of the latest Fluke SmartView software they could share please?My Smartview software v3.2 informed me last night that there was an upgrade available.. which I proceeded to download, however the DL failed. So I headed over to Flukeswebsite to get it from there and it seems there is a fault with their file too. I can download it but the very last part of the file does not complete and I am left with a general .exe iconon my desktop instead of an expected Fluke type logo. The setup will sort of complete, however when trying to open the software it's not starting properly,leaving the Fluke logo covering the expected Smartview screen running underneath it.I've tried un-installing the software as well as any left over registry data, then reinstalling but no luck.Thanks guys
UK: Sensors & Instrumentation, NEC, Sept 2016 - Useful? - Page 1
Forum section: electronics / general

author: rt
author_rank: Regular Contributor
timestamp: May 20, 2016, 10:23:59 am
content: Hi UK-persons,Anyone have any feedback on previous visits to Sensors & Instrumentation in NEC? Quality of seminars & demonstrations?To paraphrase mikeselectricstuff on tradeshows: 'Boring as Batshit' or 'Want to Teardown Everything in There'?Not looking at specific purchases just ideas gathering ahead of 2017 planning.Thanks,rt
OLED Driving Method - Page 1
Forum section: electronics / general

author: Poe
author_rank: Frequent Contributor
timestamp: May 19, 2016, 08:37:07 pm
content: I'm trying to learn about graphical LCD and OLED drivers. No specific reason, just curious. Note this isn't the serial to parallel ICs which provide an interface to the drivers, but the actual drivers and panel themselves.Does anyone have a good resource? I've found plenty of overviews, but nothing specific.Some questions:I've read OLEDs utilize line/column scanning and PWM for grey-scale. I figured this required only one row was lit at any given instant... until I came across this:Is the persistence in the video real or is the video camera just too slow to catch it? If only one row is on, is this why OLEDs are considered dimmer than LCDs?LCD refresh times are advertised as low as 1mS. Assuming there's just one row being updated at a time, I can calculate therowrefresh time. ~1uS feels way too fast though. Are multiple rows typically being updated simultaneously?

author: bktemp
author_rank: Super Contributor
timestamp: May 19, 2016, 09:17:28 pm
content: Small OLEDs are being multiplexed similar to a LED matrix, but this works only up to 200-300 lines because the peak currents necessary for a certain brightness become too high.Larger OLEDs are similar to TFT LCDs. They have a current source connected to a storage capacitor behind each pixel, so there is virtually no flicker except during image update. Screen update for a AMOLED works almost identical to a TFT LCD, but is a bit more complicated, because the current sources must be adjusted to get a uniform brightness across the screen. So they add some additional steps during image refresh doing some kind of offset calibration.The refresh rate is typically 60Hz (16.6ms), but the response time of LCDs is in the range of several ms. OLEDs instead respond almost immediatly (just like a LED, when you cut the current it stops emitting light).Unfortunately most manufacture won't give you any detailed information how they drive their OLED screens, because they are constantly trying to improve lifetime, brightness, uniformity and other parameters to be one step ahead of the competitor.
Answer these application questions - Page 1
Forum section: electronics / general

author: mov-jump
author_rank: Contributor
timestamp: May 19, 2016, 12:50:17 pm
content: Hello guysI take a course about fundamental electronics in university and there are some parts that include my final mark,such as interviewing with electronics experts.I look forward to read your answer.Thx in advanced.1- First Name :2- Last Name :3- Age :4- Country :5- City :6- University degree :7- University :8- Company that you are working for :9- Job tittle :10- Job description :11- Your working experiences in electronics :12- What is the best field in electronics to catch a job and earning money :13- What is your idea about your university degree worth to looking for a job :14- What were important for company which you are working for to employ you (such as software or working experiences) :15- Extra description :
New Solar Cell 44% increase in efficiency - Page 1
Forum section: electronics / general

author: Shock
author_rank: Super Contributor
timestamp: May 18, 2016, 02:06:03 am
content: Quotehttp://www.abc.net.au/news/2016-05-18/university-of-nsw-engineers-set-solar-energy-world-record/7423762

author: gildasd
author_rank: Frequent Contributor
timestamp: May 18, 2016, 09:15:05 am
content: A bit like Sigma's Foveon sensor?http://www.sigma-global.com/en/cameras/dp-series/technology/

author: mtdoc
author_rank: Super Contributor
timestamp: May 18, 2016, 10:47:36 pm
content: These kind of stories are always interesting from a technological point of view but in practical terms - it's only in niche applications that space is a limiting factor for a PV installation. Therefore, 44% efficiency offers little advantage over the more typical PV efficiency of 15 -20% or so.

author: rx8pilot
author_rank: Super Contributor
timestamp: May 18, 2016, 10:53:01 pm
content: It seems to say that it is 44% better than the previous record - making it 'nearly' 35%. Progress indeed, but if it is 10x the cost and has a terrible life span - meh.Not a lot of details.Sent from my horrible mobile....

author: tszaboo
author_rank: Super Contributor
timestamp: May 19, 2016, 01:45:55 pm
content: More details:http://newsroom.unsw.edu.au/news/science-tech/milestone-solar-cell-efficiency-unsw-engineersWe have to remember that at some point, monocrystal was expensive, and before that solar cell was expensive.

author: dannyf
author_rank: Super Contributor
timestamp: May 19, 2016, 08:12:14 pm
content: QuoteJust curious: what would be the equivalent of a tree? or some plants? especially if you fully load the environmental costs of a solar panel vs. a tree / plant.

author: gildasd
author_rank: Frequent Contributor
timestamp: May 19, 2016, 09:23:22 pm
content: Quote from: NANDBlog on May 19, 2016, 01:45:55 pmWe will se this tech in small high value applications long before it get to grace the roofs of the 'burds.It only really makes sense for very limited spaces like hiking chargers, car ventilation/trickle charge systems or my bloody scale that needs a sunny day for prolonged use!Darn thing always cut's out mid way through the hardener when mixing resins, because of the shadow of the bottle, German design my arse...

author: LabSpokane
author_rank: Super Contributor
timestamp: May 19, 2016, 10:21:45 pm
content: Quote from: dannyf on May 19, 2016, 08:12:14 pmPlant efficiency is in the mid single digits. Industry joke is that no tree could ever get development funding.

author: dannyf
author_rank: Super Contributor
timestamp: May 19, 2016, 10:26:47 pm
content: QuoteSounds like those industry people are such an unbiased source of information on this that we should totally trust them.

author: mtdoc
author_rank: Super Contributor
timestamp: May 19, 2016, 10:59:17 pm
content: Quote from: gildasd on May 19, 2016, 09:23:22 pmI'd imagine Space applications - satellites, probes, etc would be another niche application. Those would be less price sensitive as well.I don't think a $500 hiking or auto trickle charger will not sell very well.
Strontium usb flash sticks  - Page 1
Forum section: electronics / general

author: sony mavica
author_rank: Frequent Contributor
timestamp: May 18, 2016, 11:38:25 pm
content: just wanted to know if anybody has ever used this brand before and how good it wasas a shop by my house tomorrow is having a one day sale on some items they selland they will be selling 8gb strontium flash sticks for $3.50nzd and i was looking to get somei can get 32gb micro sd card for like $13nzd with a micro SD card reader but would a usb flash stick bemore reliable then an micro sd card?
Smart low voltage disconnect - Page 1
Forum section: electronics / general

author: dglad4
author_rank: Newbie
timestamp: May 17, 2016, 02:16:34 pm
content: Hey guys, does anyone know of a good solution to a low power cutout for lead acids?I want to buy a new deep cycle for camping and previously with using low voltage disconnects to protect from overdischarge annoyingly is voltage sagging on a heavy load causing the LVD to trip before remaining power gets to the desired point. Of course trip voltage could be set lower to allow for this but when light loads sip away the battery can get discharged too far.Is there a 'smart' LVD out there or design which isn't effected by dropping supply voltage on load? My thoughts are there would be one that can monitor current and make a cutout voltage adjustment based on how heavily the battery is being drawn from, if this would work that is.Thoughts?Thanks for your help in advance.PS: I'm an electronics hobbyist, so I can build circuits from scratch based on a design But I couldn't figure out how to design one like I need. I'm happy to look at products for sale and just buy one if they're available and reasonably priced.

author: Red Squirrel
author_rank: Super Contributor
timestamp: May 18, 2016, 08:17:45 pm
content: I'm working on a similar project involving a lead acid battery, solar panel, inverter and12v cig lighter outlets for camping and was going to use an automotive relay, but at 130ma draw I felt it was quite high. Opted for a latching relay, not as high capacity but ok for my needs. A microcontroller will monitor voltage and disconnect power if it's too low. There will be a "start" button to turn relay back on.I'm curious to see what other solutions others come up with though as mine may be more complicated than it has to be.

author: station240
author_rank: Unknown
timestamp: May 18, 2016, 08:42:31 pm
content: If the idea were to convert an existing low voltage cutout then.You'd need to add current as a factor for the input voltage divider, eg add Opamps.basic idea isV => VxI = Watts.Another way would be to quickly sample the voltage when the load is switched out (and running of it's smoothing caps).

author: tautech
author_rank: Super Contributor
timestamp: May 18, 2016, 09:38:01 pm
content: Not at all hard with something like this:https://www.maximintegrated.com/en/products/power/supervisors-voltage-monitors-sequencers/ICL7665.htmlThey're getting on a bit now but at the time they were very low current requirement.

author: NiHaoMike
author_rank: Super Contributor
timestamp: May 19, 2016, 04:15:32 am
content: Add some low pass filtering so a momentary dip will not trigger it.
Quick question regarding the Netgear WNDR 3800. - Page 1
Forum section: electronics / general

author: Asavage9794
author_rank: Contributor
timestamp: May 20, 2016, 12:15:03 am
content: So I have a netgear WNDR3800 with charter firmware. Im wondering if I can put the stock firmware on the router without messing anything up. anyone have one? have you tried it. I cant find it on google.

author: NiHaoMike
author_rank: Super Contributor
timestamp: May 20, 2016, 02:19:13 am
content: Looks like OpenWRT is supported.https://wiki.openwrt.org/toh/netgear/wndr3800
OT TV Destruction - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: May 18, 2016, 01:44:40 am
content: I know they are kind of silly but I got a laugh out of them.If you have a sense of humor for this kind of thing they worth a look.Courtesy of shango066 on YouTube.Thick Wiliams BluredDual Rotating BigScreen

author: T3sl4co1l
author_rank: Super Contributor
timestamp: May 18, 2016, 03:17:11 am
content: Reminds me ofhttps://youtu.be/QEi1ggtO5Oc?t=24m21sAlso, watch the rest of the episode for a very HJS-esque YT video about the history of the invention.Also, for anyone who's long since forgotten about The Secret Life of Machines, or anyone who wasn't around when it aired, all episodes are freely available on YT!Tim
Fair amount of electronics to detect win of Todd / Kalitta race  - Page 1
Forum section: electronics / general

author: joeqsmith
author_rank: Super Contributor
timestamp: May 17, 2016, 02:34:56 am
content: Tight race. Good application for electronics.

author: tautech
author_rank: Super Contributor
timestamp: May 17, 2016, 02:39:50 am
content: F***ingUNO-TUBEThe uploader has not made this video available in your country.....

author: joeqsmith
author_rank: Super Contributor
timestamp: May 17, 2016, 02:58:43 am
content: Try thesehttp://www.foxnews.com/leisure/2016/05/16/doug-kalitta-wins-closest-nhra-top-fuel-drag-race-ever-by-0001-seconds/
I have the qualification electronics and i don't know it's occupation - Page 1
Forum section: electronics / general

author: alexandrei77
author_rank: Newbie
timestamp: May 16, 2016, 01:32:28 pm
content: This is about highscool.I followed this domain by our educational criterions,I didn't understand what is with the montages and i kept asking myself why do i have to draw a circuit when i didn't know what happened with the pieces in the actual moment.I muddled trough school and i didn't knew why i choosed this domain.Maybe it's because of the sofisticated name.I am asking you if i can hired with the degree but no practical knowledges,i mean you write math formulas and you calculate what you have to calculate without keeping tabs on to put something to work.The worst part is that we don't have the electronics department in our town and the only departmant that is alive is electrotehnics.All i know is that i wield Ohm's law,Kirchoff's law and the current+voltage formulas.Also,our Ms class teacher explained us at her hour that all we have to know is to complete the cv and that's all.Our Ms class teacher is an english teacher.

author: timgiles
author_rank: Regular Contributor
timestamp: May 16, 2016, 02:11:23 pm
content: If you managed to get a degree or any other qualification, you should record that on your CV. The honest thing to do is to be honest in an interview and say you will work hard but need support. There will be a whole slew of people I suspect saying lie, just get in as best you can and wing it.I dont know Romania - or where you live at present, if they have apprenticeships? This is where a firm takes you under its wing, generally for minimum pay/wages, and helps train you 'on the job'. The hope is that you see and value the time and money the company has spent on you and they get a cheap worker who can in a short(ish) time help boost productivity.If you understand the theory - the practical should come on pretty quick. There is nothing stopping you watching Youtube and getting visual advice from professionals on particular types of work.Good luck.