hybridfree/eevblog-posts huggingface dataset:
Massdrop: Multimeter Group Buy - Page 1
Forum section: electronics / general

author: nidlaX
author_rank: Frequent Contributor
timestamp: July 16, 2015, 11:57:51 pm
content: In case you haven't heard of Massdrop:https://www.massdrop.com/how-it-worksThere are currently a few other multimeter polls on the site, but I find the voting options unrealistic (a Fluke 87V group buy for "midrange" / "hobbyist" multimeters?). If there's any interest, I'd like to see some votes for the alternative players such as Brymen, Uni-T, UEI, etc. Please add suggestions for meters with street pricing / MSRP around $100-$150.Poll here:dro.ps/v/uMMccYk
OCXO with ADEV of 1E-13 on Pluto Mission - Page 1
Forum section: electronics / general

author: Mr Smiley
author_rank: Frequent Contributor
timestamp: July 16, 2015, 11:47:02 pm
content: From the 'time-nuts' mailing list*********************Here is an interesting link to the New Horizons Mission to Pluto radiosystem design.Note last section describes an OCXO with ADEV = 1E-13 at 1s, and aging rateof <1E-11 per day.http://www.uhf-satcom.com/amateurdsn/Paper-969.pdfI wonder if their spares will show up on eBay?John Stuart, KM6QXLafayette, CA_______________________________________________time-nuts mailing list -- time-nuts@febo.comTo unsubscribe, go tohttps://www.febo.com/cgi-bin/mailman/listinfo/time-nutsand follow the instructions there.*************************This was sent later******************************The link below is an updated version of the same paper:http://www.boulder.swri.edu/~tcase/NH%20RF%20Telecom%20Sys%20ID1369%20FINAL_Deboy.pdfIt has considerably more detail on the RF components as well as theUSO module for which there is an entire page of additional informationand a block diagram.Whatever happened to the spare components probably happened a decadeago at any rate. Not that they wouldn't eventually wind their way toebay anyway!Regards,John K5IT

author: rs20
author_rank: Super Contributor
timestamp: July 16, 2015, 11:49:02 pm
content: Already on the forum:https://www.eevblog.com/forum/chat/new-horizons-technical-details/msg711059/#msg711059
Session verification failed. Please try logging out and back in again, and then  - Page 1
Forum section: electronics / general

author: wilfred
author_rank: Super Contributor
timestamp: July 15, 2015, 11:38:06 am
content: /.

author: edavid
author_rank: Super Contributor
timestamp: July 15, 2015, 02:59:47 pm
content: Yes, I see it regularly when I click on a link on e.g.https://www.eevblog.com/forum/unread/It goes away if I refresh the parent page, so I wonder why SMF can't do that automatically, or the equivalent.
Reccomendations for home LED light fixtures - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: July 15, 2015, 02:22:36 am
content: I would like to know what you experiences and recommendations are ceiling mounted LED home fixtures.I just bought this one;http://www.homedepot.com/p/Lithonia-Lighting-14-in-Square-Low-Profile-White-LED-Flushmount-FMLSL-14-840-M4/203617261I like the general styling of the fixture but the color temperature was a little surprising. Really whitish. They are listing the color temperature at 4000k for the one I bought.Do you prefer a lower temperature, warmer light or do you get used to the whiter light. These will be for hallways and bedrooms.Light output is good on this one 1600 lumens, which is about the output I'm looking for.Any thoughts and recommendations appreciated.

author: Halcyon
author_rank: Unknown
timestamp: July 15, 2015, 09:30:08 am
content: I just installedHPM led lightingthroughout my place; a mixture of their Dalia (15W), Azalea (11W) and Freesia (7W) depending on the room. (Not sure if you can get these outside Australia.)Their specs are pretty impressive and certainly beat those cheaper Chinese ones. They did cost significantly more though. I went all warm white (3000K) as I found the cool white too 'sterile' for my liking. These particular LED exhibited far less flicker than cheaper models (yes, LED's do flicker to some degree, even if it's not visible to the naked eye). Their warranty and life expectancy was also double of some of the other brands I looked at.These are the prices I got them for (trade prices through a mate):HPM Dalia, 15 watt (P/N: LDL023KWE) @ AUD$63.45ex eachHPM Azalea, 11 watt (P/N: LDL013KWE) and HPM Freesia 7 watt (P/N: LDL033KWE) both @ AUD$38.70ex eachOn top of all that, I went nuts with dimmers (even in bathrooms). The drivers that come with these HPM lights support bothleading edge and trailing edgedimmers.My suggestion is, always install more lights than you think you'll need and add a dimmer. You can always turn down a bright light, but you can't create more light than you have. Also, think carefully about how you're going to switch them. In the case of my living and dining areas, I installed them in "banks" so I could switch them on in stages rather than all on or all off. Likewise in hallways or walkways, considering multi-way switching so that you can switch on at the front door then off again when you reach your living area. Saves walking back and forth just to switch 'walkway' lights off.

author: rollatorwieltje
author_rank: Unknown
timestamp: July 15, 2015, 09:50:30 am
content: I bought 2700k LED spots to replace existing MR16 halogen spots, those are pretty much equal in color. Replaced 4x20W 36 degree halogen with 4x7W 60 degree LED. The LED bulbs emit significantly more light, even with the much wider beam angle. The 20W replacements are rated at 3.5W, I'm inclined to believe the light output is similar to a 20W halogen.Bought them more as an experiment, I'm still not convinced these retrofit bulbs last longer than a halogen bulb.
Thank you for the firefighters - Page 1
Forum section: electronics / general

author: boffin
author_rank: Unknown
timestamp: July 15, 2015, 03:13:13 am
content: I'd like to express my appreciation to all Aussies..Firefighters from Australia are coming to Canada’s aid to help with over 450 active forest fires. More than 13,000 people were evacuated from their homes in northern Saskatchewan earlier this week, along with about 1000 tourists from Jasper National Park in Alberta.....http://blogs.theprovince.com/2015/07/13/australian-firefighters-to-help-fight-canadas-forest-fires/We really need the help
TEquipment.net gets 2 thumbs up! - Page 1
Forum section: electronics / general

author: GreyWoolfe
author_rank: Unknown
timestamp: July 14, 2015, 10:07:36 pm
content: I placed an order today for a Hakko FX-951, some tips and tip holders. I set up my account, put everything into my cart, put in my shipping/billing info and when I tried to continue, nothing happened. I opened a chat and Katherine came on and tried to help but she couldn't so she got David involved and in the meantime, called me and took my order over the phone. David asked me if I would take the time to do some debugging with him and I said yes. He sent me instructions and I followed and sent him the results and for my time, TEquipment.net is sending me a $100 gift card!!! Great people to do business with and I will again, besides using the gift card. On top of that, Katherine was calling from New Jersey, my home state, and that's a plus. Now I just have to figure out what to spend it on.
New Horizons - 2 000 000 Km to Go - Page 1
Forum section: electronics / general

author: German_EE
author_rank: Super Contributor
timestamp: July 12, 2015, 07:32:13 pm
content: Or one day sixteen hours and about seventeen minutes, but who's counting

author: gildasd
author_rank: Frequent Contributor
timestamp: July 12, 2015, 07:45:11 pm
content: http://www.space.com/29912-pluto-dark-spots-final-photo.html

author: rdl
author_rank: Super Contributor
timestamp: July 14, 2015, 05:32:00 pm
content: The planning and navigation that goes into a mission like this is incredible.NASA has an app you can download that let's you watch a 3D simulation of this flight (and others). It's well worth checking out.http://eyes.nasa.gov/

author: German_EE
author_rank: Super Contributor
timestamp: July 14, 2015, 06:12:21 pm
content: Well, the approach has now taken place so now we have to wait for an initial 'phone home' from the spacecraft to confirm that it survived the encounter. After that it's an even longer wait for the pictures to arrive, I heard up to a year for all of the data.I don't know what the media coverage was like in your part of the world but I was very disappointed. All we saw was a picture of an empty Mission Control and a bunch of folk outside waving American flags.
Mionix bad design & build quality - Page 1
Forum section: electronics / general

author: jerolee
author_rank: Contributor
timestamp: July 13, 2015, 10:01:21 pm
content: Hi Guys,I need this off my chest.It is about Mionix mouse Bad Design & build Quality.The scroll wheel dies because of internal Design failure.I am such an idiot that i have 2 of them MIONIX MOUSE and BOTH have same problem obviously.I contacted Mionix about the issue and got nothing but nonsense about warranty.The internal wiring of the Mionix Mice is so bad that it breaks at the solderjoints in NO time. They use solidcore wire on moving parts, thats asking for trouble and if u contact and complain?Do not ever buy Mionix because the customer service is non existing, even when its a Design Failure of Mionix.Thanks, i feel better alreadyJerolee
BMW 7 Series - Gesture Control - Page 1
Forum section: electronics / general

author: Vgkid
author_rank: Super Contributor
timestamp: July 11, 2015, 11:41:33 pm
content: That is actually pretty cool.

author: HighVoltage
author_rank: Super Contributor
timestamp: July 12, 2015, 08:57:19 am
content: It is pretty amazing what you find in this new 7Series or the new Mercedes S-ClassIt also seems that they are going overboard with so many items.The time will come that it will be impossible to memorize all knobs and settings in a luxury car.And imagine something will go wrong, who will fix it?

author: ivan747
author_rank: Super Contributor
timestamp: July 12, 2015, 02:13:29 pm
content: Quote from: HighVoltage on July 12, 2015, 08:57:19 amThe Germans, of course.What is going to happen is the same that happened with computers and the older generations: we will not adapt too them but the generations after us will grow used to them.

author: cimmo
author_rank: Frequent Contributor
timestamp: July 12, 2015, 10:33:58 pm
content: Quote from: HighVoltage on July 12, 2015, 08:57:19 amThat is why as soon as these vehicles fall out of warranty their value plummets.

author: vk6zgo
author_rank: Super Contributor
timestamp: July 13, 2015, 02:59:58 am
content: I had a Renault R25 from the mid '80s which had a little chap in the dash who gave you spoken warnings about various fault conditions.The only problem was that the sensors failed & he would give you crazy warnings or say "All is OK" when you had a real fault.It also had an LCD panel that told you how far you could go on the remaining fuel in your tank,& a lot of other crap--never worked.The other biggie was the "Computer controlled Automatic transmission" which would change back into first gear whenever it felt like it!It was a nice car,& was probably a serious price when new---I bought it for $1500 & I was robbed!But,then again,it was French,not German!
Government objectivity...? - Page 1
Forum section: electronics / general

author: SL4P
author_rank: Super Contributor
timestamp: July 12, 2015, 04:10:24 am
content: [No country in particular]When did we shift from being thesubjectsof our governments' administration - to theobjectsof their authority?

author: TerraHertz
author_rank: Super Contributor
timestamp: July 12, 2015, 04:13:47 am
content: Quote from: SL4P on July 12, 2015, 04:10:24 amA while after we were no longer their masters.Have you a link to a reference, re being the 'objects' of govt authority? (A better phrase might be 'objects of their intent' ?)

author: SL4P
author_rank: Super Contributor
timestamp: July 12, 2015, 04:17:29 am
content: My question sprang from an idle thought that ran along that oldroyalsaying--- 'my subjects'... and I realised we have no meaningful access, or means to promote ideas, or object to authority - unless we already have contact(s)withinthe 'authority class'

author: Stonent
author_rank: Super Contributor
timestamp: July 12, 2015, 04:57:22 am
content: Quote from: SL4P on July 12, 2015, 04:17:29 amThe bigger you let the government grow, the less the individual will matter.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: July 12, 2015, 06:12:40 am
content: No time in particular.It's a natural, gradual, evolutionary progression, a conglomerated system made of disparate, self interested actors and alliances.It may sometimes look like conspiracy or collusion, but the overall behavior of such a system can be explained satisfactorily in these terms.Management of such a system relates to feedback and control mechanisms. If there are too few links between classes, and not enough two-way links at that, you tend to get the effect seen over time here.In an abstract graph theory sense, it seems it's in the actors' best interests to minimize links towards themselves (thus, "power" would be seen as an asymmetry of links, exerting more influence over, than they receive from, others).A commonly seen method of separation is abstraction, pushing another node between the two groups. Example, a company buys commodity items from a Chinese factory; customers complain about working conditions. Company sets up a "principled" buyer warehouse, which actively verifies suppliers follow the new rules. That's one new node; the customers have even less contact with the ultimate supplier. In comes a new supplier, which resells from some distant third-party factory; they merely *say* their supplier is good enough, but perhaps don't physically inspect it themselves. Two (or more) nodes inserted, and there's even less contact between company and ultimate supplier: the mandate has been abstracted away.Tim

author: Mechanical Menace
author_rank: Super Contributor
timestamp: July 12, 2015, 12:31:55 pm
content: There was no shift, just rose tinted glasses. We've never being anything but slightly smarter cattle to the elect, we vote for which of their children they allow us to and we die at their whim.
Home made breadboard jumper - Page 1
Forum section: electronics / general

author: android
author_rank: Regular Contributor
timestamp: July 13, 2015, 01:08:30 pm
content: I was so pleased with an idea I had recently that I thought I'd post some piccies...Problem: I bought one of thosespring-loaded SOP28-to-DIP28 adaptersfor plugging into breadboard, but the problem is that the thing has so much overhang that it's difficult to insert male-to-male jumpers under it.Solution: epoxy some right-angle headers to a piece of 1mm Lexan polycarbonate (you can cut it with scissors). That's all fine, but how to join the headers pin-for-pin? Well, for my 0.7 inch span, another section of right-angle header fitted perfectly...and, as a bonus, I now get a row of breakout test pointsPictures say a thousand words...

author: ozwolf
author_rank: Regular Contributor
timestamp: July 13, 2015, 05:18:44 pm
content: Very cool.
Will this work as a lab powersupply - Page 1
Forum section: electronics / general

author: kolbep
author_rank: Frequent Contributor
timestamp: July 10, 2015, 09:32:47 pm
content: HiI am looking to get a better powersupply for electronics work.At the moment I just use Alarm Batteries (7,2AH 12v).But if something is wrong, or I do something wrong, I either get melting wires, burned, sparks, or components blowing themselves up and flying around the lab.Sometimes I use a 7805 or LM317 regulator cct, but I dont have anything decent as a CC Source.I would love one of these fancy supplies Dave has, but money (or lack thereof) is holding me back.If I get a module like this :http://www.ebay.com/itm/Digital-controlled-CC-CV-Current-Voltage-LED-Driver-Step-Down-Module-f-Solar-/400729454444?tfrom=400841119167&tpos=top&ttype=price&talgo=undefinedand hook it up to say a laptop powersupply,will it be any good for occasional use (as CC/CV powersupply)Do I need CC or Current Limiting more?Pros and Cons Please.Thanks

author: nctnico
author_rank: Super Contributor
timestamp: July 10, 2015, 10:09:22 pm
content: I'd get something which resembles a real lab power supply. These are reasonable:www.ebay.com/itm/New-0-30V-0-5A-Portable-Mini-DC-regulated-Adjustable-DC-power-supply-/151636354846

author: cimmo
author_rank: Frequent Contributor
timestamp: July 10, 2015, 10:41:33 pm
content: If you need to keep it cheap, then the pre-build modular approach does work.Here are some examples:This module is pretty decent for ~$20and building it in in a box:Whatever you do, make sure you get some form of current limiting, it saves a lot of expensive magic smoke release. Obtaining the raw power from a laptop power supply (typically 19v @ 2A) would be a good solution and avoids the hassles/risks of mains wiring.
Outsource your... gaming power?  - Page 1
Forum section: electronics / general

author: daqq
author_rank: Super Contributor
timestamp: July 10, 2015, 04:42:07 pm
content: OK, I did not expect this:http://hackaday.com/2015/07/10/build-an-amazon-ec2-gaming-rig/Apparently, taking into account some assumptions, you can end up paying quite a lot less for a rented "gaming rig" than buying one of the same parameters with the same results.

author: Mechanical Menace
author_rank: Super Contributor
timestamp: July 10, 2015, 04:48:20 pm
content: What about latencies? A wireless keyboard and mouse can ruin my performance in a deathmatch lol.

author: rollatorwieltje
author_rank: Unknown
timestamp: July 10, 2015, 06:49:10 pm
content: This is how PlayStation Now works. Steam also supports it by making your pc the server, it can then stream the video to another Steam client. For slow paced games the Steam system works ok, I wouldn't want to use it for fast shooters. Even on gigabit ethernet there's a noticable delay (about 40ms on my system). It can be tweaked though, and afaik it can use the onboard nVidia Shadowplay encoder if your card supports it.
Inventory/parts tracking - Page 1
Forum section: electronics / general

author: staze
author_rank: Frequent Contributor
timestamp: November 29, 2014, 01:16:33 am
content: All,Curious if anyone does any kind of parts/inventory tracking, or does everything just live in Plano/Akro-Mills drawers?I started using partkeepr, but the author recently decided to stop development. An Excel sheet could work, or Google Docs, but that's kinda clumsy.Anyone have anything they use, or am I wasting my time? I don't sell, but when I'm shopping online for cheap parts, or at an electronics store for bits and bobs, I kind of what to know if I already have what I'm looking at (do I already have 26awg stranded wire in red/black, or is that wire I'm thinking of 22awg?) Meaning whatever it is, I need to access it from my phone. So that would lend itself to google docs, or some web based option. Guess I could also home grow something, but that just seems like busywork if there's other options. The Adafruit CircuitPlayground has an inventory system, but it doesn't sync to anything (that I can find).Thanks!

author: Radio Tech
author_rank: Frequent Contributor
timestamp: November 29, 2014, 01:44:58 am
content: Good luck finding something. I have been looking for years. But not anything really for electronic parts that I can find. I have over 25 thousand parts in stock. Scattered from bins on the wall to plastic cases under the counters. I really have to fix this lol.

author: Felicitus
author_rank: Regular Contributor
timestamp: July 11, 2015, 03:40:32 am
content: Quote from: staze on November 29, 2014, 01:16:33 amI have good news: PartKeepr is under active development again, with a new major release coming up later this year.cheersFelicitus
Bob parker meter , ebay.com and ebay.co.uk - Page 1
Forum section: electronics / general

author: Deathwish
author_rank: Unknown
timestamp: July 10, 2015, 05:05:02 pm
content: Ok first of all i am posting a link to what is claiming t be either a copy of the bob parker esr meter or such.http://www.ebay.co.uk/itm/121530455722?ru=http%3A%2F%2Fwww.ebay.co.uk%2Fsch%2Fm.html%3F_ssn%3Ddz-stuido%26hash%3Ditem1e9e00366e%26item%3D131499832942%26pt%3DLH_DefaultDomain_3%26_from%3DR40%26_sacat%3D0%26_nkw%3D121530455722%26_rdc%3D1&autorefresh=trueNext, as i am in the UK i went to see what he has in his shop and I only see 5 items !, go to ebay.com and it suddenly shows hundreds of items in his shop, none of which are restricted to the UK,so ,is ebay stitching up sellers by not displaying their whole shop in countries they ship to ?.
Electrical Engineers .... - Page 1
Forum section: electronics / general

author: pplaninsky
author_rank: Regular Contributor
timestamp: July 16, 2015, 09:51:18 am
content: http://xkcd.com/567/

author: T3sl4co1l
author_rank: Super Contributor
timestamp: July 16, 2015, 10:44:26 am
content: https://xkcd.com/356/

author: N2IXK
author_rank: Frequent Contributor
timestamp: July 16, 2015, 07:28:44 pm
content: http://xkcd.com/730/https://xkcd.com/643/

author: CosPhi
author_rank: Regular Contributor
timestamp: July 17, 2015, 01:07:43 am
content: Like our teacher said back then ...... even when you lie drunk beside the street you have to remember Ohms law
is this project show-offable? - Page 1
Forum section: electronics / general

author: michvtr
author_rank: Newbie
timestamp: July 02, 2015, 12:36:19 pm
content: hi all, EE student here with a project that I completed,for my 3rd year electrical engineering project, I built a remote control car which drives towards an object of a blue, green or red color. it uses a couple of webcams which feds data pixel by pixel into Matlab for image processing and arduino as an interface. The algorithm itself is based on the camera data, if red > 200, pixel passes and then if total<say 80 (meaning blue and green components in that pixel is not that present, pixel is pronounced as a red pixel.all the coding seems to be a bit elementary but I feel like I got a good leap into programming. is this project impressive. now if it is impressive enough, would Amazon be impressed if I applied for an internship to work in their primeair division.let me know what you think,i really appreciate your help

author: EEVblog
author_rank: Unknown
timestamp: July 02, 2015, 12:42:28 pm
content: Yep, I'd show off that, can't hurt.

author: nitro2k01
author_rank: Frequent Contributor
timestamp: July 02, 2015, 12:53:43 pm
content: You should definitely show it off. It doesn't matter at this point in your career (ie, still a student) that the project is a bit elementary. The point is not to show that you already know everything you need to know, but that you are capable of learning and willing to work. To that end, your project is a good demonstration.

author: sarepairman2
author_rank: Frequent Contributor
timestamp: July 10, 2015, 03:55:34 am
content: i usually bring in a bag of tricks and try to show the best ones, and say i have others if he/she has the time and interest, if you are being interviewed by a electronics nerd he might ask you to present the less advanced ones, if not they maybe just give someone a hunch that like, at least you have a hobby, less chance of you being a bad worker kinda, it might clue them in that yea, your probobly not the type of person that comes to work wasted/hung over/ party animal etc.
Amp Hour shirt spotted in the wild - Page 1
Forum section: electronics / general

author: Stonent
author_rank: Super Contributor
timestamp: July 11, 2015, 02:45:14 am
content: I was at Tanner Electronics in Carrollton, TX today and one of the employees was wearing an Amp Hour shirt. I mentioned that it was the first time I saw someone other than Dave Jones wearing it. He said he saw one of his customers wearing it and had to get one. He said he also has the Negative Feedback shirt that he wears sometimes.

author: ivan747
author_rank: Super Contributor
timestamp: July 11, 2015, 04:04:58 am
content: Nice. I should get the negative feedback t-shirt.

author: EEVblog
author_rank: Unknown
timestamp: July 11, 2015, 04:09:39 am
content: Sweet!

author: WZOLL
author_rank: Regular Contributor
timestamp: July 11, 2015, 10:09:08 am
content: Saw a random guy at Chicago O'Hare airport with a negative feedback shirt a few days ago.

author: nctnico
author_rank: Super Contributor
timestamp: July 11, 2015, 06:52:32 pm
content: Another neat T-shirt text I spotted a while ago: "Here take my advice, I don't need it".

author: gildasd
author_rank: Frequent Contributor
timestamp: July 11, 2015, 07:08:13 pm
content: A sign of the apocalypse?

author: LabSpokane
author_rank: Super Contributor
timestamp: July 12, 2015, 08:30:26 am
content: I have been reliably informed that I could outfit all the EEs at our electrical utility in Negative Feedback t-shirts.My only issue with the Amp Hour shirt is that the needle needs to point to the right.
SMD Marking - Page 1
Forum section: electronics / general

author: EEVaditya
author_rank: Regular Contributor
timestamp: July 09, 2015, 07:41:21 am
content: hello,I have got one component with Marking as follows:1st Row: UBT2nd Row: 46Package: SMCFrequently I get problems in recognising parts without knowing Manufacturer . Is there any document which will be helpful.

author: tautech
author_rank: Super Contributor
timestamp: July 09, 2015, 08:01:09 am
content: Try this one:http://chip.tomsk.ru/chip/chipdoc.nsf/vc1!readform&view=smd&cat=%C3%BC&start=996&count=50

author: EEVaditya
author_rank: Regular Contributor
timestamp: July 09, 2015, 03:26:00 pm
content: Thanks! I got the part I wanted
Kids "hack" their Dad's computer - Page 1
Forum section: electronics / general

author: abdullahseba
author_rank: Frequent Contributor
timestamp: July 09, 2015, 05:59:00 am
content: Check this video out.

author: helius
author_rank: Super Contributor
timestamp: July 09, 2015, 06:25:18 am
content: Almost all people use passwords that are very easy to guess, using information about the person that can be discovered in various ways. Most work on securing passwords related to salts and hash algorithms doesn't protect from that at all, but only from attacks that attempt to discover many passwords in parallel from large passwd databases. The fundamental problem is that users choose the passwords.

author: mswhin63
author_rank: Frequent Contributor
timestamp: July 09, 2015, 06:38:28 am
content: Thats why i faceplant my passwords in notepad and then 10 years trying to remember it.

author: abdullahseba
author_rank: Frequent Contributor
timestamp: July 09, 2015, 06:55:41 am
content: Quote from: helius on July 09, 2015, 06:25:18 amI didn't have a password on windows 7 but Windows 8.1 uses your Microsoft account password.Evilthankfully very deeply hidden in the settings you can auto login.

author: Deathwish
author_rank: Unknown
timestamp: July 09, 2015, 07:40:27 am
content: I once purchased a mag card reader and used my tesco clubcard to swipe as a password.

author: German_EE
author_rank: Super Contributor
timestamp: July 09, 2015, 09:20:04 am
content: This child will go far, and I wish her luck
What is a SCF supercritical generator? - Page 1
Forum section: electronics / general

author: elmo
author_rank: Contributor
timestamp: July 07, 2015, 11:11:46 pm
content: I was reading around about a small home-scale wind-turbine, and the producer (in China) brags about a SCF supercritical generator. I have never heard of such a thing, and I can't really find anything usefull on Google about it. Not even a patent that I can read.Does anybody know what the whole deal is with this one, and how it is different from a plain synchronous generator with field coils or permanent magnets?I know that it is not three-phase output, it is two phases (not to be confused with single phase). It has four leads, U1, U2, V1 and V2. So the third one is missing, if that is helpful.Relevant links:http://www.hummerwindgenerator.com/advantages/patent-scf.htmhttp://www.chinahummer.cn/userfiles/efndj/201403182137056782011lg34j.pdf

author: abebarker
author_rank: Contributor
timestamp: July 08, 2015, 02:05:55 pm
content: http://www.home-generator.net/product_145107/Wind-Turbine-3KW-residential-wind-generator.htmlhttp://www.freepatentsonline.com/5925959.pdfIt is a permanent magnet generator with slits cut into the magnet to increase the effective flux, from what I understand.
Beer powered cars! - Page 1
Forum section: electronics / general

author: hamster_nz
author_rank: Super Contributor
timestamp: July 07, 2015, 12:43:08 am
content: Yeah, I know it is all marketing spin, but....http://www.3news.co.nz/nznews/brewtroleum-arrives-in-auckland-2015070616

author: miguelvp
author_rank: Super Contributor
timestamp: July 07, 2015, 12:55:17 am
content: I'll contribute by drinking more beer to ensure there are plenty of byproducts available for this processBut I think most of the stations in the US dispense 10% ethanol already regardless of brand.

author: GreyWoolfe
author_rank: Unknown
timestamp: July 08, 2015, 12:06:24 am
content: I would love to help out but I have been encouraged by 2 different doctors to not drink

author: zapta
author_rank: Super Contributor
timestamp: July 08, 2015, 12:14:42 am
content: Here is a DYI car from Quebec that runs on corn an emits useful byproducts:

author: abdullahseba
author_rank: Frequent Contributor
timestamp: July 08, 2015, 11:09:20 am
content: I thought you wasn't supposed to drink drive
neat multi output psu  - Page 1
Forum section: electronics / general

author: Deathwish
author_rank: Unknown
timestamp: July 07, 2015, 07:12:02 pm
content: I took apart a Dion freeview digital receiver the other day, found a small but usefull psu with +12v +5v and a 3.3V output on it, handy for a few things I suppose.

author: SeanB
author_rank: Super Contributor
timestamp: July 07, 2015, 09:17:57 pm
content: Output capacitors will be failing soon, I* just repaired a nice D Link 16 port 10/100 switch by replacing the 2 capacitors on the built in power supply. 1000uF 16V, both bulging. Did the standard upgrade to the mainboard of placing a small heatsink onto the main processor, as they always run too hot, especially in a unit without a fan.Cost nothing, using parts from another dead SMPS and a heatsink from a dead PC mainboard south bridge. I got the unit for free as not working. Got another smaller 16 port unit as well, same chipset but wall wart powered with a dead wart. That one will simply be powered off the 12V battery providing power to the DSL router or I will look for a working SMPS unit or transformer ( it has a built in SMPS so needs any voltage from 6V to 16V) to drive it.

author: Deathwish
author_rank: Unknown
timestamp: July 07, 2015, 10:28:04 pm
content: Right now I would rip your arm of for that switch or any switch !, I have been trying to network 2 win 7 boxes together and a xp machine. box a,b,c box c being xp. box a can see box b on the net and access it, box b can see a but not access it, I am not into homegroups as it causes problems between xp ( box c )and win 7 when communicating. Anyway, nothing I do on any of the boxes lets box b access box a or c. I am personaly now of the opinion that it is something to do with the nasty bt homehub2 router I have. So a switch may be the answer, just cant afford one at present.Box a and c are in fact alternatively connected to the same connector.

author: Whales
author_rank: Super Contributor
timestamp: July 07, 2015, 11:09:36 pm
content: @DeathwishDo you have any old home gateways lying around? They tend to work fine as switches, provided you turn them onafteryou turn your main gateway device on (otherwise it will take the role of DHCP server and start handing out ips). I've been running one from my last ISP in my bedroom for a while now.Are you trying to get SAMBA shares working between the PCs? What is it you actually want to use the interoperability for?
can't play youtube VR 360 videos - Page 1
Forum section: electronics / general

author: sony mavica
author_rank: Frequent Contributor
timestamp: July 06, 2015, 10:04:29 am
content: im unable to view then have tried chrome and firefox without any luck i can get them to work on firefox only if they are posted on facebook or other sitesif possible i want to view them on youtube.com

author: IanB
author_rank: Super Contributor
timestamp: July 06, 2015, 10:18:32 am
content: They work for me with Chrome on Windows. Also with the latest YouTube app on a mobile device.I do not know why you are having trouble. Do you have an older computer maybe? Perhaps it's a hardware compatibility thing?

author: Halcyon
author_rank: Unknown
timestamp: July 06, 2015, 07:08:54 pm
content: Works fine under Internet Explorer. Just make sure you have the latest version of Flash Player installed.

author: Red Squirrel
author_rank: Super Contributor
timestamp: July 07, 2015, 10:20:19 am
content: Never got them to work either, probably very platform dependent. I'm on Linux, most coders seem to think Windows and Mac are the only OSes that exist.
Good books for beginners (ee) - Page 1
Forum section: electronics / general

author: XDroidie626
author_rank: Contributor
timestamp: July 05, 2015, 09:38:36 pm
content: I am currently reading electronics all in one for dummies but is there any other good books for beginners to electronics?Many thanks!!

author: tggzzz
author_rank: Super Contributor
timestamp: July 05, 2015, 09:44:28 pm
content: There are many other threads on this forum about that subject.In what way are your requirements different? That will enable us to provide a personalised response.

author: XDroidie626
author_rank: Contributor
timestamp: July 06, 2015, 12:17:33 pm
content: Apart from been a noob with electronics in general nothing, I had a look via Google for any on this forum but I cannot find anything

author: tggzzz
author_rank: Super Contributor
timestamp: July 06, 2015, 12:34:07 pm
content: Quote from: XDroidie626 on July 06, 2015, 12:17:33 pmReally? Tryhttps://www.google.co.uk/search?q=site%3Awww.eevblog.com+books
Solar plane completes a 5 day journey from Japan to Hawaii - Page 1
Forum section: electronics / general

author: Muxr
author_rank: Super Contributor
timestamp: July 04, 2015, 09:04:24 pm
content: http://www.theskytimes.com/2015/07/a-solar-powered-plane-lands-in-hawaii.htmlPretty cool. Now if they could only use these for my PCBs from China

author: George_Race
author_rank: Regular Contributor
timestamp: July 04, 2015, 09:37:36 pm
content: Really a great accomplishment, and a new world record has been set.A really beautiful airframe, years in the building.

author: Artlav
author_rank: Frequent Contributor
timestamp: July 06, 2015, 08:30:21 am
content: Quote from: mojo-chan on July 06, 2015, 08:18:53 am*While the sky is clear, the day is long enough and there is no high wind.Which put quite a restriction on climate and latitude.It won't be good for regular service.Also, how is it better than a tethered balloon?
Another interesting Chernobyl video of school - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: July 05, 2015, 11:50:18 pm
content: This is from the same women that did the Duga radar video.She swears as much as I do.

author: xrunner
author_rank: Super Contributor
timestamp: July 06, 2015, 01:14:07 am
content: Oh cool I love these vids ...
HP's fall - Page 1
Forum section: electronics / general

author: artag
author_rank: Super Contributor
timestamp: July 05, 2015, 08:13:52 pm
content: I just came across this today. Hadn't seen it before although I read a lot of HP history sites.For those of us who think HP/Agilent/Keysight aren't the company they once were, this is an insider's view.https://billanddave.wordpress.com/
1+1 = 1, but not 3, legally speaking... - Page 1
Forum section: electronics / general

author: hamster_nz
author_rank: Super Contributor
timestamp: July 05, 2015, 11:02:51 am
content: So it is true!One plus one does not equal three, even for large values of one, but it can come pretty close (2.9999999999999999....)Quotehttp://www.independent.co.uk/news/science/what-exactly-does-one-mean-court-of-appeal-passes-judgement-on-thorny-mathematical-issue-10350568.html

author: SeanB
author_rank: Super Contributor
timestamp: July 05, 2015, 11:49:07 am
content: So based on that you can pay your taxes by sending in a little over half the amount, based on this ruling.

author: Lightages
author_rank: Unknown
timestamp: July 05, 2015, 06:37:57 pm
content: Lawyers and accountants.......

author: gildasd
author_rank: Frequent Contributor
timestamp: July 05, 2015, 06:46:44 pm
content: Quote from: Lightages on July 05, 2015, 06:37:57 pmLittle Johnny sure does fib a lot, I wonder what he'll be when he grows up?

author: KJDS
author_rank: Super Contributor
timestamp: July 05, 2015, 06:56:37 pm
content: I suspect that the judges were interested in common sense as much as mathematics. The new product breached the spirit of the original patent and the judges found a way to enforce it.What an accountant can manage with a tax return seems beyond common sense in many areas, however it's within the many many thousands of pages of guidance produced by our government that details what is and isn't allowed.

author: c4757p
author_rank: Super Contributor
timestamp: July 05, 2015, 07:07:02 pm
content: Common sense? It's common sense that "between 1 per cent and 25 per cent" includes 0.77%? I'd have thought it was common sense that numbers were given in the first place so that there could be clear boundaries. Stupid judges.

author: miguelvp
author_rank: Super Contributor
timestamp: July 05, 2015, 07:35:58 pm
content: Quote from: SeanB on July 05, 2015, 11:49:07 amI will think is't the opposite, every .5 can be counted as 1 so you made twice the money and you have to pay double.But at the same time if you get paid say 0.49 / minute and the actual transaction was that, I guess you could add all of the paychecks and end up with 0Too bad the tax man uses monthly or annual salary but I guess you could still say your salary is 0 if each paycheck can be rounded to the nearest number (in this case 0).
BBC confuses voltage and power - charge your phone from a plant - Page 1
Forum section: electronics / general

author: tom66
author_rank: Super Contributor
timestamp: July 05, 2015, 11:07:46 am
content: Today, saw BBC Click talking about plant energy. Sure might be able to get a few milliwatts but really it's not that practical as the most efficient photosynthesis is around 1-2% compared to 20-30% for man made solar cells. But, one part really annoyed me. They used a multimeter to measure voltage and conclude that a voltage means there is power! This is how that sonic audio and wifi charging scam stuff got started - use a meter, see a voltage, assume you can charge your phone.For those in the UK you can watch it here. The particular moments are 21:30 and 22:35.http://www.bbc.co.uk/iplayer/episode/b0622mp1/click-04072015To their credit, they did say the charging would be very slow.

author: EEVblog
author_rank: Unknown
timestamp: July 05, 2015, 11:16:31 am
content: Quote from: tom66 on July 05, 2015, 11:07:46 amInvestors gave the uBeam girl 10's of millions for doing that:

author: amyk
author_rank: Super Contributor
timestamp: July 05, 2015, 01:25:28 pm
content: It's only a matter of time before someone measures a few kV of static electricity and concludes that it could be used to charge your phone...

author: jadew
author_rank: Frequent Contributor
timestamp: July 05, 2015, 06:54:41 pm
content: Quote from: amyk on July 05, 2015, 01:25:28 pmThat's gotta be a mistake, with that kind of voltage you can power an entire building! But wait! when you put a load on it, it goes away - it's probably because you've stumbled upon some form of energy that is not understood by today's brainwashed engineers and it's incompatible with the current ways of using or measuring it. A new device, made up of coils and magnets, has to be invented in order to extract and convert this energy. Only its inventor and a few other folks that are not "stuck" in the conventional way of thinking, can truly understands how it works.The invention never goes mainstream. Everyone concludes it's a conspiracy.

author: gildasd
author_rank: Frequent Contributor
timestamp: July 05, 2015, 07:05:43 pm
content: Lets charge our phones by wearing a wool sweater over a synthetic long sleeved T-shirt!

author: Deathwish
author_rank: Unknown
timestamp: July 05, 2015, 07:09:40 pm
content: Not long till someone designs a dynamo that you can attach too your belt and feet then charge as you walk.....

author: SeanB
author_rank: Super Contributor
timestamp: July 05, 2015, 07:26:49 pm
content: Quote from: Deathwish on July 05, 2015, 07:09:40 pmnot attached to a belt, but exists as a cat........
Chinglish translation help - Page 1
Forum section: electronics / general

author: lpc32
author_rank: Frequent Contributor
timestamp: July 03, 2015, 01:00:12 pm
content: Can anyone help me translate the following? It's from a supposed fuse spec sheet.QuoteMaybe the table next to the text will help decipher it:Code:Fuse timeRated 100% Rating 135% Rating 200%RatingTime Min:4hours Max:1hours Max:120sCurrent 100Ma-10A 100MA-10A 100MA-10A

author: amyk
author_rank: Super Contributor
timestamp: July 03, 2015, 01:39:16 pm
content: It's a poor back-translation from one of the usual standards for fuse testing.At 200% rated value, the fuse should... fuse within 5 seconds, then voltage is maintained for 5 minutes after which there should be no explosion.But would you trust fuses with specs like that...?

author: lpc32
author_rank: Frequent Contributor
timestamp: July 03, 2015, 02:34:57 pm
content: Thanks. So 5 seconds is the "minimum time"? Their table gives 120s as the max (close to IEC 60127-2's 2 min max at 2.1 I_n). Why is it a time range, BTW? And after the fuse is tripped, it's only required not to blow up for 5 minutes with voltage applied?What's that 2 amps they mention there?Mainly looking at that because I can't find any other readily available online sources for the specific type, and no cheap way to get a fuse or two from one of the large parts suppliers.

author: CatalinaWOW
author_rank: Super Contributor
timestamp: July 03, 2015, 05:40:11 pm
content: Cheap Chinese crap is bad, but these specs don't prove poor quality, only lack of focus on an English speaking market.Fuses will always have variability in time and current required to blow them. They are just a crude furnace melting a piece of metal. In addition to any variability in manufacturing a fuze will open at a higher current when it is freezing cold outside and at a lower current when it is cooking in an automobile in some equatorial desert. The specs are some attempt to quantify and control it, with some concessions to testability. You can imagine weird stuff under high load conditions like the metal vaporizing and then re-condensing to reform the current path. That sort of condition is the intent of the "blow up after 5 seconds" portion of the spec.If the Chinese understood the intent of the original spec, and these fuses met that spec I wouldn't necessarily have a problem with using them. The answer would be in what your application needs. If you need a fuse that opens 100% of the time, in all weather conditions, within 1 second and at 105% of the rated current you will spend a long time looking, and empty your pocketbook if you ever find them.Considerations like these are why it never paid to fuse protect FET outputs in the 70s and 80s (and presumably today). The FETs blew faster than the fastest fuses we could find.

author: lpc32
author_rank: Frequent Contributor
timestamp: July 05, 2015, 01:53:40 pm
content: Yeah, nothing inherently wrong with stuff from China. But there's a higher chance for bad or fake stuff, and it's difficult to know in advance.
How not to draw a schematic - Page 1
Forum section: electronics / general

author: MikeW
author_rank: Regular Contributor
timestamp: July 02, 2015, 06:29:49 pm
content: These two are the same circuit:Whoever drew the one on the left is a massive tit.Anyone else got some good examples?

author: suicidaleggroll
author_rank: Super Contributor
timestamp: July 02, 2015, 07:04:54 pm
content: Quote from: MikeW on July 02, 2015, 06:29:49 pmAnything posted by ranch varment, eg:

author: SL4P
author_rank: Super Contributor
timestamp: July 03, 2015, 06:26:20 am
content: Or if I were drawing it (minus the red bits), it would look like this to help identify the flow of the circuit.There are more dramatic changes that would improve it more, but with the existing symbols - this'll do!

author: SL4P
author_rank: Super Contributor
timestamp: July 03, 2015, 06:47:08 am
content: ok - I was bored... modified_2 shows a bit clearerIn this type of circuit - less wires crossing is better!

author: AndyC_772
author_rank: Super Contributor
timestamp: July 03, 2015, 07:20:21 am
content: Is the first schematic supposed to show the physical layout of a system too? The others all show at least one "L" (whatever that is) the opposite way round.Arguably a wiring diagram that shows things in their true physical orientation is more useful than a schematic that just shows connectivity, even if there is still some room to reduce wire crossings.

author: SL4P
author_rank: Super Contributor
timestamp: July 03, 2015, 07:21:55 am
content: I took that liberty - as the (lamp) connections were not indicated as polarised or wire-specific.If there is a physical relationship - that could be mentioned - and an alternative schematic developed.

author: Circlotron
author_rank: Super Contributor
timestamp: July 05, 2015, 01:10:32 pm
content: I just started a thread on bad schematics without seeing this one.

author: Macbeth
author_rank: Super Contributor
timestamp: July 05, 2015, 01:45:06 pm
content: Actually the xkcd circuit diagram is pretty good really.
Retrieve digikey component information from the bag barcode - Page 1
Forum section: electronics / general

author: claudyus
author_rank: Newbie
timestamp: July 05, 2015, 04:28:53 pm
content: Hi all, this is my first post on this community and I would like to share with you all a script that I made to resolve a problem in my home lab, I have a lot of digikey spare parts ordered over time and I would reorganize it.To reorganize the lab I made a python script, published here , that is able to retrieve component information starting from the digikey barcode.Did you know if something similar yet exist and I'm reinventing the well?Some one had never used those barcode? Any documentation is available on the barcode format?Bye1.https://github.com/claudyus/digikey-barcode-reader
Possibly the crappiest battery from a chinese cordless drill - Page 1
Forum section: electronics / general

author: mcinque
author_rank: Unknown
timestamp: July 03, 2015, 06:53:33 pm
content: A friend took me his "new" cordless drill and ask me why it has so low power...

author: aortiz557
author_rank: Contributor
timestamp: July 03, 2015, 07:54:59 pm
content: are they at least lithium cells?

author: Balaur
author_rank: Unknown
timestamp: July 03, 2015, 08:13:37 pm
content: Quote from: aortiz557 on July 03, 2015, 07:54:59 pmBased on the cell count and general appearance and sizes it appears to be a pack of 10 NiMH cells in series for a total of 12V.

author: mcinque
author_rank: Unknown
timestamp: July 03, 2015, 08:25:43 pm
content: Old Ni-Cd rated 1200mAh

author: macboy
author_rank: Super Contributor
timestamp: July 03, 2015, 11:14:39 pm
content: Quote from: mcinque on July 03, 2015, 08:25:43 pm"rated" at 1200 mAh, meaning actual capacity of 800 to 900 mAh. You won't find AA NiCd cells with much higher real capacity than that.

author: amyk
author_rank: Super Contributor
timestamp: July 04, 2015, 01:04:45 am
content: Not even a dummy weight? It must feelverylight...Even if they're not high capacity, NiCds can supply very high currents.

author: pickle9000
author_rank: Super Contributor
timestamp: July 04, 2015, 01:18:49 am
content: That's awesome. I can just see the sales pitch, "Just look at our new lightweight batteries."

author: mcinque
author_rank: Unknown
timestamp: July 04, 2015, 03:09:40 pm
content: Quote from: macboy on July 03, 2015, 11:14:39 pmThat would be the best caseQuote from: amyk on July 04, 2015, 01:04:45 amIt's very very lightweight (compared to a proper ni-cd/mh drill's battery). That's why I opened It.Quote from: pickle9000 on July 04, 2015, 01:18:49 am