hybridfree/eevblog-posts huggingface dataset:
APC DLA1500 UPS site wiring indicator? - Page 1
Forum section: electronics / general

author: SArepairman
author_rank: Frequent Contributor
timestamp: October 11, 2013, 11:23:38 pm
content: Does anyone know if the DLA1500 UPS systems will display a wiring fault if there is no battery connected to them?I have a unit (with a completely dead battery) that displays a wiring fault light on the back when I plug it in.I took the unit apart, checked the cables for continuity and did a visual inspection, I don't see any problems.Does this light come on if there is no battery or does the unit have some other fault? I checked the outlet to see if it is wired correctly (low resistance between neutral and ground + correct polarity).It seems to be a common fault on ebay but I don't know if this unit is junk or if I can get a new battery for it.

author: rexxar
author_rank: Frequent Contributor
timestamp: October 11, 2013, 11:31:04 pm
content: I guess they could be using the site wiring fault light as a dead battery light, but I don't see why they would. I say make sure there isn't a dead short across the battery connections, and hook it up to a 12V source and see what happens.

author: Monkeh
author_rank: Super Contributor
timestamp: October 12, 2013, 12:16:28 am
content: Quote from: rexxar on October 11, 2013, 11:31:04 pmIt's a 1500VA UPS, it's not going to be 12V.

author: metalphreak
author_rank: Frequent Contributor
timestamp: October 13, 2013, 04:52:51 am
content: Most of these UPS should still power on with no battery connected. They are designed so you can hot swap the battery packs without powering down the equipment attached to them (otherwise it's pretty worthless as an uninterruptable power souce)My APC 1000VA has 24V packs. My 1920W Dell UPS has 72V packs. There is no standard voltage, but generally the higher capacity units will have more batteries in series.

author: rexxar
author_rank: Frequent Contributor
timestamp: October 13, 2013, 06:55:30 am
content: Quote from: metalphreak on October 13, 2013, 04:52:51 amThe idea is to test the thing before he goes out and buys expensive batteries, which is why I suggested powering it from an external supply. The last failed unit I got from fleabay worked fine, until I put in the battery and BANGAn SLA has a lot of current to put through a shorted switching FET. A current-limited supply should cut down on the pyrotechnics.Thinking about it again, though.. I wonder if the site wiring fault light isn't discreetly driven? I have a couple of borked APC units here, and while I haven't traced out the whole circuit, it looks like there's a couple transistors detecting the mains wiring. If it's a common fault for this unit, maybe that circuit is the problem, and the actual UPS is fine?
How does Agilent choose product names? - Page 1
Forum section: electronics / general

author: microbug
author_rank: Frequent Contributor
timestamp: October 12, 2013, 11:07:41 am
content: So, I've been looking at various pieces of test equipment, some by HP/Agilent. I know that Dave has ranted about this before but I couldn't find any info so:Does anyone know how Agilent/HP choose their product names?

author: Unknown
author_rank: Unknown
timestamp: October 12, 2013, 11:51:18 am
content: There is some logic to it. For example 34* are generally DMMs, 33* function/signal generators and 6* power supplies. The U series is their low-cost test equipment, often former Escort designs. The A suffix is sometimes changed for minor revisions. Within a series it's somewhere between sequential numbering and semi-random increments to get nice numbers (eg. 34401A -> 34410A -> 34460A).

author: Hypernova
author_rank: Unknown
timestamp: October 12, 2013, 12:56:32 pm
content: It is elementary Watson! You see, there is this spinning board with names on it where every staff member gets a turn with darts...

author: c4757p
author_rank: Super Contributor
timestamp: October 12, 2013, 01:32:54 pm
content: I always figured it was the price they wanted to sell it for, before marketing told them nobody would spend that much. Alternately, in the case of high-end models like the many-GHz Infiniium scopes, it's the same, but for the average option cost.
The Cat, The Fan, The Catnip Mouse - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: October 12, 2013, 01:38:20 am
content: Greetings EEVBees:--"Come help me let go of this mouse."All cats are grey in the dark"Benjamin Franklin 1706 - 1790Best RegardsClear Ether

author: peter.mitchell
author_rank: Super Contributor
timestamp: October 12, 2013, 04:28:11 am
content: I'm usually against this kind of thing, but the noise from the cat was freaking hilarious.

author: SeanB
author_rank: Super Contributor
timestamp: October 12, 2013, 06:34:23 am
content: A variety of cat Leslie organ......
resetting bios password on P-7811FX - Page 1
Forum section: electronics / general

author: SArepairman
author_rank: Frequent Contributor
timestamp: October 11, 2013, 08:12:36 pm
content: So I need to reset the bios password on this laptop.I tried to unplug the CMOS battery, short out the CMOS battery pins (while the battery is disconnected) , and hold the power button while the CMOS bat is unplugged.Any other ideas?

author: Stonent
author_rank: Super Contributor
timestamp: October 11, 2013, 08:22:15 pm
content: On laptops they are frequently flashed in a 8 pin flash chip. But most companies like dell will give you a master unlock code if you call them and can prove ownership.

author: Stonent
author_rank: Super Contributor
timestamp: October 11, 2013, 08:24:23 pm
content: On Toshiba laptops in the general area of the dimm slots usually under a sticker there's two solder pads that look like -[- that you can short to reset it.

author: rexxar
author_rank: Frequent Contributor
timestamp: October 11, 2013, 08:33:28 pm
content: I agree with Stonent. Try contacting Gateway first, and if they can't help you (or want to charge you $10,000 to send it in for service), start looking for that 8-pin flash or EEPROM. Should be somewhere near the southbridge, I think.

author: fluxcapacitor
author_rank: Frequent Contributor
timestamp: October 11, 2013, 09:00:02 pm
content: Hi, is there a system disabled code on the screen ?

author: SArepairman
author_rank: Frequent Contributor
timestamp: October 11, 2013, 10:35:36 pm
content: No, I can log into windows just fine.I just forgot the password.

author: fluxcapacitor
author_rank: Frequent Contributor
timestamp: October 11, 2013, 10:43:45 pm
content: right, so you cant get into the bios to change settings etc.If you try and enter a password 3 times it should say system disabled on the screen and give you a 5 digit code.If you get to that point post the 5 digit code here and i`ll give you the bios password ,or send me a PM .edit: don`t worry at the system disabled screen,when you restart the laptop it will give you another 3 goes at the password.
Recall in Australia for import ‘Infinity’ branded mains cable - Page 1
Forum section: electronics / general

author: Shock
author_rank: Super Contributor
timestamp: October 11, 2013, 12:05:21 am
content: QuoteAnyone in Australia had household wiring done lately? ‘Infinity’ was sold at Masters Home Improvement.Australian news articleRecall notice‘Infinity’ is Chinese made cable and the manufacturer left out the insulation thermal polymers which results early insulation degradation. Clearly it doesn't live up to it's name.

author: SeanB
author_rank: Super Contributor
timestamp: October 11, 2013, 05:08:30 am
content: I have seen the cheap cable here, where the CSA of the cores is not enough for 10A, let alone the 16A allowed. As well the PE connection was an even thinner area, with a thicker insulation over it. Here the spec is a 2.5mm conductor with the PE a 1.5mm core, but these do not even come close to that.

author: GeoffS
author_rank: Unknown
timestamp: October 11, 2013, 06:40:28 am
content: It's unlikely that a licensed electrician would be buying their cable at Masters.This would mostly impact the DIYer doing illegal electrical work.

author: Sar
author_rank: Contributor
timestamp: October 11, 2013, 02:32:02 pm
content: Not to go too far off topic, but is all DIY electrical work illegal in Australia, the phrasing made it sound as such

author: metalphreak
author_rank: Frequent Contributor
timestamp: October 11, 2013, 03:22:23 pm
content: Quote from: Sar on October 11, 2013, 02:32:02 pmThe laws vary by state, but essentially, any hardwired electrical work must be done by a licensed electrician. Here in Western Australia, I can't even legally replace a power point even though i'm an Electrical Engineer (but not an electrician).

author: Sar
author_rank: Contributor
timestamp: October 11, 2013, 03:47:12 pm
content: Okay, thanks!

author: rexxar
author_rank: Frequent Contributor
timestamp: October 11, 2013, 03:51:54 pm
content: Quote from: metalphreak on October 11, 2013, 03:22:23 pmI wish we had laws like that here in the US. Instead what you get is contractors who don't know what they're doing wiring live and neutral backwards, and not grounding anything. You also get fun situations like in my last house where the entire upstairs was on one 15A breaker.

author: Neilm
author_rank: Super Contributor
timestamp: October 11, 2013, 05:03:35 pm
content: Quote from: metalphreak on October 11, 2013, 03:22:23 pmThe UK allows anyone to do the work, but it must be inspected by competent person. That is defined as anyone who has paid the money to get a piece of paper.As I remarked to the electrician who wired my conservatory, I was competent enough to decide if his meter was safe to do the testing, but not good enough to use the meter to test.
Ideas for University Maker society.  - Page 1
Forum section: electronics / general

author: Mex
author_rank: Newbie
timestamp: October 10, 2013, 08:17:06 pm
content: Hey All,I help run a maker society at my university called TinkerSoc (http://TinkerSoc.org).Our remit is to build cool stuff and teach our members basic engineering skills, including a bit of EE.In the past we have built an* RGB coffee tables (http://www.tinkersoc.org/2013/05/rgb-coffee-table/)* An Arcade Cab (http://www.tinkersoc.org/2013/02/raspberry-pi-arcade-machine/)* Electronics kits (TV-b-gones, mini-POV, etc).But we are always looking for new idea, and I was hoping you lot might be able to help?p.s.New to the forum so I hope this is the right place to post this (if not I am sure a mod will kindly move it).

author: sanarose
author_rank: Newbie
timestamp: October 11, 2013, 05:03:50 am
content: Nice shearing.I get many information's to here.Thanks for shearing.

author: Mex
author_rank: Newbie
timestamp: October 11, 2013, 03:44:46 pm
content: Our crowing moment so far was getting on hackaday withhttp://www.tinkersoc.org/2013/01/software-defined-radio/(sorry about bad formatting, post was migrated form our old blogging platform).Our biggest issue is coming up with projects that are* Interesting for 18+ year olds.* People who have very little EE experience.* A cheep!It seems like one of those triangles, where you can have any two of the three things.
Cheap network switches from allbids in ACT - Page 1
Forum section: electronics / general

author: qpit3a
author_rank: Contributor
timestamp: October 09, 2013, 01:00:51 pm
content: Recently (due to being on Long Service Leave) I have been looking at the Allbids auction site. I have bought a couple of lcd screens for about $15 / each and also 2 network switches for $1 each - (only picked one up so far). I thought I'd mention the switches in particular as these are rack mountable so the cases are good quality and for $1 that isn't bad for a case that might cost $100. The first one I bought works fine as a network switch (which I don't really need). Might be worth it for people to watch out for more of that kind of stuff (I suspect network hardware that is not IPV6 capable will be gradually sold of for almost nothing?

author: qpit3a
author_rank: Contributor
timestamp: October 11, 2013, 05:05:29 am
content: The newer switch also works. Massive amount of electronics inside for $1.12.... Many, broadcom chips, switching regulators (which I noted in particular because they might actually be re-usable) and other stuff very good quality and all run by an Intel i960 card. It seems to me that all the cards plug into what looks like a PCI backplane. Each card has the same HP branded chip which I suspect is the bus interface. Btw the switch is a Procurve 4000M. All card slots populated. What a waste.

author: Stonent
author_rank: Super Contributor
timestamp: October 11, 2013, 05:43:09 am
content: Quote from: qpit3a on October 11, 2013, 05:05:29 amProCurve was HP's brand of switches before they stopped selling thing (At least I think they stopped selling them)

author: Fsck
author_rank: Super Contributor
timestamp: October 11, 2013, 09:32:08 am
content: Quote from: Stonent on October 11, 2013, 05:43:09 amprocurves are still sold. they even ate 3com to beef up their line.

author: vk2hmc
author_rank: Contributor
timestamp: October 11, 2013, 10:26:35 am
content: Have you seen the new H3C switches and routers?http://www.h3c.com/portal/Products___Solutions/Products/H3C is actually Huwai and 3com (read HP backing) and is a brand made to enter the China marketplace.Having played with a bit of enterprise H3C hardware, it seems to be better made than Cisco,perform better abd a lot more innovative.And according to purchasing a lot cheaper.Software wise, an old cisco head like myself had no problem.BAckk west, looking at HPN product line, I think Cisco may have finally met its match.Like I said, HPN/H3C is better designed from the ground up.The only switch to stay away from are GBe2c.It you are silly enough to purchase one and it won't work, most support folk will hang up in your ear.Well the experienced ones anyway (:
high voltage summit - Page 1
Forum section: electronics / general

author: Richard W.
author_rank: Regular Contributor
timestamp: October 10, 2013, 08:48:19 pm
content: Hello,some weeks ago i took a few pictures on the summit of Großer Osser here in Bavaria, Germany.My first intention was to take pictures of the sunset, but as so often, i was a little late and the weather turned bad.But maybe the resulting pictures are better than a boring sunset... what do you think?A little explanation of the St. Elmo's fire can be found below the pictures on the flickr stream.Link to my flickr-album:http://www.flickr.com/photos/79070051@N05/sets/72157634924718795/regardsRichard
messy is good - Page 1
Forum section: electronics / general

author: miceuz
author_rank: Frequent Contributor
timestamp: October 09, 2013, 05:42:37 pm
content: post photos of the mess on your workbench now

author: miceuz
author_rank: Frequent Contributor
timestamp: October 09, 2013, 10:04:14 pm
content: a thermocouple to rs485 interface under test and DAC8411 and REF5020 over the breadbord - been testing ADC performance.but really i somewhat like the beauty in this chaos that grows over the workbench..

author: chibiace
author_rank: Regular Contributor
timestamp: October 10, 2013, 03:48:19 am
content: i would but i cant find my camera, it has become lost in the mess.i think perhaps being able to organize and store parts and tools could be a very useful skill to learn, but sadly....

author: june
author_rank: Newbie
timestamp: October 10, 2013, 08:00:54 am
content: I have to say, it is pretty messy.

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 10, 2013, 11:14:32 am
content: Quote from: chibiace on October 10, 2013, 03:48:19 amI can't find my charger. Really! Goddamn mess!
Trip do Los Angeles - Page 1
Forum section: electronics / general

author: fmaimon
author_rank: Unknown
timestamp: October 13, 2013, 09:28:55 pm
content: I'll be in Los Angeles next week for work and a little bit of vacations and I was wondering which electronics related places are there to go. I saw the Apex Electronics video (EEVBlog #124) and it is on my todo list.Is there any other place you guys recommend?Thank you,Felipe
circuitlab.com privacy issues - Page 1
Forum section: electronics / general

author: Valueduser
author_rank: Contributor
timestamp: October 08, 2013, 12:52:59 pm
content: So I logged into circuitlab.com yesterday and was greeted by a message that is has ended its beta and that users now had to subscribe for full functionality. For those that don't know it's an online capture and simulation tool. I was happy to find that they offered a free subscription for students, however upon subscribing I was notified that they reserve the right to use my personal info as they see fit. I'm wondering if this is their way of generating revenue from free student accounts. Does anyone know if the paid subscriptions are also subject to the same privacy issues?

author: Shock
author_rank: Super Contributor
timestamp: October 08, 2013, 02:35:16 pm
content: Used it and I guess it has some useful features but wouldn't pay for it.I like circuit simulator for quick stuff, the scope feature is nice as well.http://www.falstad.com/circuit/I also have LTspice.

author: Valueduser
author_rank: Contributor
timestamp: October 08, 2013, 04:15:43 pm
content: Thanks for the suggestion, I liked circuitlab because I could use it without having to boot into windows on my mac.

author: mswhin63
author_rank: Frequent Contributor
timestamp: October 10, 2013, 02:18:02 am
content: Yeah i saw the exact same thing, immediately disregarded this and will never reach the site again. There are other online resources that are more private than circuitlabQuote from: Valueduser on October 08, 2013, 12:52:59 pm
MOSFET Capacitance - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: October 09, 2013, 10:36:23 pm
content: In a MOSFET, how can I obtain the capacitance between Source and Drain when the device is in non-conductive state ?The datasheet specifies capacitance when the device is in operation mode, I need when the device is in non-operational mode.Is there such a parameter ?David.

author: madires
author_rank: Super Contributor
timestamp: October 09, 2013, 10:57:04 pm
content: Quote from: DavidDLC on October 09, 2013, 10:36:23 pmYou would need a capacitance meter which uses a DC voltage and determines the capacitance from the charging time. Attach the probes reversed to the intrinsic diode to prevent the diode to conduct. Do you really mean Source and Drain? Or was it Gate and Source?

author: DavidDLC
author_rank: Frequent Contributor
timestamp: October 09, 2013, 11:34:08 pm
content: Source and Drain. Mainly the device will be in open state, and I want to know if it will affect signal integrity, and when in conductive mode it will short communication lines.David.
False Possitive on Avast? - Page 1
Forum section: electronics / general

author: PeterG
author_rank: Frequent Contributor
timestamp: October 09, 2013, 06:59:58 am
content: Hi All, i was surfing eBay for a OBD2 module and stumbled across this.http://www.ebay.com/itm/121182327387My avast is reporting 51 threats on the page.Can anyone else confirm this?I have never seen such a thing on eBay pages before.Regards

author: Kremmen
author_rank: Super Contributor
timestamp: October 09, 2013, 08:30:02 am
content: Well, i can un-confirm it in that F-secure 2013 is happy with the site. Zero warnings when i open that page and it loads apparently normally. So should be OK.

author: PeterG
author_rank: Frequent Contributor
timestamp: October 09, 2013, 08:34:48 am
content: Many thanks Kremmen.Regards

author: TMM
author_rank: Frequent Contributor
timestamp: October 09, 2013, 10:52:12 am
content: No issues here either (Microsoft Security Essentials). Probably a false positive from the externally hosted images on the listing.Heres the direct link to the hosted pics:http://pic.mobileobd2.com/Ebay/products/IOBD2%20BT%20Android/All load fine for meedit: nothing seems to be suss in the page source either.

author: PeterG
author_rank: Frequent Contributor
timestamp: October 09, 2013, 08:39:31 pm
content: I am thinking its a false positive as well. Probably a pattern match in the url i am guessing.Thanks for your help TMM.
Not Receiving Video Notifications - Page 1
Forum section: electronics / general

author: Apostle10
author_rank: Newbie
timestamp: October 11, 2013, 02:28:58 am
content: Greetings all,I've recently joined the group. I'm a retired optometrist with an undergrad education in EE. I have acquired a boatload of instrumentation in an attempt to fulfill the interests of my youth. A good friend and member of this group introduced me to this site. He tells of how he receives email notifications whenever a new one is released.I am not receiving these notifications. I monitor my "spam folder" and my friend sent me a test email via this site, which I received.Is there some protocol that must be met prior to being sent these notifications? e.g. a certain number of posts, etc?MikeCentral Virginia, USA

author: EEVblog
author_rank: Unknown
timestamp: October 11, 2013, 05:03:20 am
content: This forum has nothing to do with the videos.Although you could get email alerts by going to the Blog Specific board and clicking on the Notify button.Most people get alerted via Youtube, the blog RSS feed, or the Facebook page. Twitter too, but you get a ton of my other crap on that account too.
Trans Pacific Partnership Agreement - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: October 08, 2013, 04:11:07 am
content: This sounds bad:http://www.independentaustralia.net/2013/business/abbott-set-to-sign-secretive-tpp-agreement-this-month/

author: Phaedrus
author_rank: Frequent Contributor
timestamp: October 08, 2013, 04:26:56 am
content: Hey, look, corporate interests interfering with the democratic process to the detriment of the majority of the population.I barely noticed; it's par for the course these days.

author: digsys
author_rank: Unknown
timestamp: October 08, 2013, 05:01:09 am
content: Probably going to be worse than the laws we signed away to get the "secret" Free Trade Agreement with USA.Some of the leaked ones were quite disgusting. We're all going to poo .....

author: walshms
author_rank: Regular Contributor
timestamp: October 08, 2013, 05:10:20 am
content: No matter what else happens, corporate interests will always be looking to profit from IP. There's just no getting around that -- it's a revenue stream they're protecting, and if they intend to enforce copyrights, then they'll do just that.The horrors!That does not, however, threaten the Internet. All it does is adds to it, even if those additions are reprehensible, ill-conceived or just plain stupid. Follow the argument here.Not everyone is concerned with copyright, and there's plenty of freely-available content. The Internet, as it exists, will still be used by people to share ideas, and content that's not copy written or placed into the public domain. You just won't be able to usesomeone else's workto gain profit for yourself.No matter what it sounds like, it's not going to change your rights in any significantly appreciable way. You'll still have access to whatever you're supposed to have access to; you might not have access to things you haven't paid for or that have been illegally obtained.Now -- where there can and should be careful examination of this is in terms of things like the delivery of content that you do pay for, i.e. music. If you buy it, you should be allowed the option of making backup copies of it, and you should be able to use it on the device(s) of your choice, not just on the one it was downloaded to, for example.The house is not coming down. Deep breath... now exhale. Now, gear up for the right fight.

author: nanofrog
author_rank: Super Contributor
timestamp: October 08, 2013, 08:46:40 pm
content: Quote from: Phaedrus on October 08, 2013, 04:26:56 amSure, but US residents are just more accustomed to it and less likely to kick up a stink IMHO, as we've lost the fight against it (any sort of fairness for the avg. person).Quote from: EEVblog on October 08, 2013, 04:11:07 amDave, I'm under the impression this sort of thing is much more recent to Australia, and seems to be sparking some questioning at least.Can you confirm/elaborate on this?
Electronics Version... - Page 1
Forum section: electronics / general

author: echen1024
author_rank: Super Contributor
timestamp: October 02, 2013, 02:24:00 pm
content: My Biology teacher showed me this poster on organic chemistry, and I thought hey! we could make an Electronics version of this! Crowd fund it, whatever. We could include basic ohm's law, calculating decoupling caps, linear and SMPS regulators, OP-Amp tutorials, etc...http://web.expasy.org/cgi-bin/pathways/show_thumbnails.plThis would be so cool.

author: c4757p
author_rank: Super Contributor
timestamp: October 02, 2013, 02:25:22 pm
content: That is delightfully complicated.I'd love to see what an electronics version of that would look like. I can't even imagine.

author: echen1024
author_rank: Super Contributor
timestamp: October 02, 2013, 04:38:06 pm
content: Exactly. I would LOVE this to hang up on my lab wall.

author: Dago
author_rank: Frequent Contributor
timestamp: October 04, 2013, 02:23:41 pm
content: I wonder where I could get the biomed version, just that would be awesome as a poster.

author: echen1024
author_rank: Super Contributor
timestamp: October 04, 2013, 02:30:05 pm
content: It's available for free from Roche Sceitific. Just need a credible excuse...

author: ablacon64
author_rank: Frequent Contributor
timestamp: October 04, 2013, 02:36:04 pm
content: Maybe not so complicated or complete as you thought but I've seen this one on hackaday:http://hackaday.com/2013/09/28/electronics-everything-reference-poster/does not seem very good though since the images seem to be a little blurry.

author: mrflibble
author_rank: Super Contributor
timestamp: October 04, 2013, 02:38:28 pm
content: Heh, I actually use some of that stuff for some non-electronics interests. Although I prefer KEGG. Because it is awesome. And clickable, and has shitloads of linked info. And you can highlight nodes with url encoding. This onehttp://www.genome.jp/kegg-bin/show_pathway?map01100+ gene cards is damn handy for the interested bio-n00b on the go.

author: tehmeme
author_rank: Regular Contributor
timestamp: October 04, 2013, 03:47:33 pm
content: Quote from: ablacon64 on October 04, 2013, 02:36:04 pmjpegs were used for some of the source material so a lot of the text and the details are lost due to compression.

author: Greyersting
author_rank: Regular Contributor
timestamp: October 07, 2013, 05:32:25 am
content: It would be really cool. Just a little bit could be added at a time and eventually it will create something like that. How big was the poster?

author: echen1024
author_rank: Super Contributor
timestamp: October 07, 2013, 06:01:42 pm
content: around 1x1.5 meters
LM311 - Page 1
Forum section: electronics / general

author: Narmadha
author_rank: Newbie
timestamp: October 13, 2013, 03:18:07 pm
content: Hey guys...Can anyone help me wit my doubt? I m using LM311 comparator in my project. So, it is said that i require a pull up resistor for the o/p of the collector to go high...on wat basis, the resistor value is decided...I mean, is there any design procedure for setting up pull up resistor value??

author: dr_p
author_rank: Frequent Contributor
timestamp: October 13, 2013, 03:35:52 pm
content: http://lmgtfy.com/?q=pull+up+resistor&l=1#

author: tszaboo
author_rank: Super Contributor
timestamp: October 13, 2013, 03:51:32 pm
content: There is two (basic) consideration. One is speed. The digital line has some capacitive load, so the low resistor gives you lower settling time. The other is current. You don't want to waste current in general, so you increase the resistance. Or in mixed signal, if you load your line with anything not high impedance, take that into account. I often use 10K resistor for low speed signals, it is a good starting point.LMGTFY on a non trivial question is rude.
How to find your first job as an electronic engineer - Page 1
Forum section: electronics / general

author: lagman
author_rank: Contributor
timestamp: October 07, 2013, 12:52:44 am
content: Hello everybody,I guess that this is the right place for this. Correct me if I'm wrong.I got a Master's degree in Micro Electronics in 2012 in France (I'm French. Sorry if my English isn't perfect!). I did my graduation internship at Texas Instruments France. I worked on an integrated DC-DC Buck converter.I took a long time to start looking for a job, almost one year!Now I'm looking, but I would like to get advices from more experienced people.My typical day consists of looking on job boards for new job offers and replying to the ones that are close to what I can do (electronic design: analog and digital).I don't get much answers and I don't know if I'm gonna find anything that way. Any advice is welcome.Thanks!
What the heck are you talking about Dave? or Youtube transcription pitfalls - Page 1
Forum section: electronics / general

author: facosta
author_rank: Newbie
timestamp: September 15, 2013, 05:18:58 am
content: First thing first ... I love EEVblog. This place is my first stop as soon as I turn my Pc on every day.Just out of curiosity I clicked on the transcript button on a random EEVblog video and this is the result for the first one minute:EEVblog #141 - AA Alkaline Battery Capacity Measurement youtube first minute transcripts LOL0:00prime welcome to the evenflo electronics engineering had interesting one bolton0:07summits design finally highest diet drugs0:10however previous lol was a tutorial0:13on battery capacity now i thought i follow that up just quickly with a very0:19acquittal practical demonstrations of having been shot0:23battery capacity0:24now as i mentioned previously this two different ways0:28michelle specified0:30battery capacity with the first one isn't what it was0:34and the second one of these npr's anne garrels is a more simply stick figure0:39as likes line in the previous logo by castro began but the truth capacity is0:43measured0:44in one day last year0:45let's have a look at these if we've got0:48at the bulky jovial battery on the black sea zombies left-hand black cc0:53and first0:54on the right-hand y axes and time of discharge time on the except he'sso that's is what electronics it is all about: "diet drugs" and "black sea zombies"I'm going back to Uni, I want to know moreeeeeeeeeee ...Cheers,

author: EEVblog
author_rank: Unknown
timestamp: September 15, 2013, 05:22:45 am
content: Yes, the Youtube transcription service works flawlessly. Amazing technology!

author: MacAttak
author_rank: Unknown
timestamp: September 15, 2013, 06:16:54 am
content: There really needs to be an alternate Bad Lip Reading version of EEVBlog videos

author: free_electron
author_rank: Super Contributor
timestamp: September 15, 2013, 10:57:50 am
content: Can we also have a low bandwidth video for people that are on dial up ? I suggest compressing it to 64 by 48 pixels with audio encoded in 5 bit a-law and bandwidth limited from 300 to 3000 hz...

author: amyk
author_rank: Super Contributor
timestamp: September 15, 2013, 11:06:12 am
content: https://www.eevblog.com/forum/blog/eevblog-112-gsm-vs-the-fluke-87v-multimeter/45/Their voice recognition system was trained on news reports, so the decisions about what it's hearing tend to be skewed in that direction.

author: konatsu
author_rank: Newbie
timestamp: October 07, 2013, 07:42:46 am
content: Quote from: amyk on September 15, 2013, 11:06:12 amIsrael's attacking me... LOL
TI $25 Credit For Account Migration From NatSemi - Page 1
Forum section: electronics / general

author: Frenchie
author_rank: Regular Contributor
timestamp: August 22, 2013, 01:57:49 am
content: I was plesantly surprised to open my email this morning and have an email from TI with a $25 store credit because my National Semiconductors account got automatically migrated to a TI account a year ago. I was initially a bit skeptical but the email headers seemed to check out okay.I went to the store via TI's main website (who trusts email!) and placed an order for a dev board. Everything seems like it has gone through just fine, order came up as paid as soon as I punched the code in. Will update this thread if/when it arrives.Just a heads up that it might be worth looking out for the email if you also had a Nat Semi account that got migrated. Seems like the sort of thing that'd end up in a spam folder.If it is legit, kudos to TI for doing something completely unexpected but quite awesome after a takeover.

author: marshallh
author_rank: Unknown
timestamp: August 22, 2013, 06:22:48 am
content: Yeah, it is legit.

author: Rcouto
author_rank: Newbie
timestamp: October 07, 2013, 12:19:03 am
content: The code was legit however it was abused. The original promo code is now cancelled.
Question about forums - Page 1
Forum section: electronics / general

author: Greyersting
author_rank: Regular Contributor
timestamp: October 07, 2013, 11:43:18 pm
content: I am looking at the online list and see a lot of people. Is this just because of the contest or is it usually like this?

author: c4757p
author_rank: Super Contributor
timestamp: October 07, 2013, 11:49:50 pm
content: That's pretty normal.
Is extratorrent.com  down?? - Page 1
Forum section: electronics / general

author: ErikTheNorwegian
author_rank: Frequent Contributor
timestamp: October 05, 2013, 06:33:39 pm
content: Im

author: fluxcapacitor
author_rank: Frequent Contributor
timestamp: October 05, 2013, 06:38:22 pm
content: its down in the UK .http://www.isitdownrightnow.com/extratorrent.com.html

author: PA0PBZ
author_rank: Super Contributor
timestamp: October 05, 2013, 08:55:03 pm
content: Quote from: ErikTheNorwegian on October 05, 2013, 06:33:39 pmIt's back
EE Job Postings? - Page 1
Forum section: electronics / general

author: rantonides
author_rank: Contributor
timestamp: September 26, 2013, 10:31:43 pm
content: Is there an appropriate place on the forum to post jobs? Buy/Sell???

author: hughes_k
author_rank: Contributor
timestamp: October 07, 2013, 12:20:34 am
content: General Chat seems most appropriate, as that's where other people have discussed jobs and job titles, etc.
Urrg...  Like new, nope is new.  - Page 1
Forum section: electronics / general

author: Rick Law
author_rank: Super Contributor
timestamp: October 02, 2013, 05:50:41 am
content: Hey, anyone looking to buy some "like new" electronic gear with.... arg... no manufacturer support?While there has been larger cash heists, I do not recall a largersingleelectronic gear heist of this magnitude.BBC News:http://www.bbc.co.uk/news/world-latin-america-24340645An armed gang in Brazil has stolen tablets and notebook computers worth an estimated $800,000 (£500,000) from the cargo terminal at Sao Paulo airport.

author: pickle9000
author_rank: Super Contributor
timestamp: October 02, 2013, 07:17:39 am
content: Now the crooks just have to find people that can afford them... I smell massive discount and sad criminals.

author: Bored@Work
author_rank: Super Contributor
timestamp: October 02, 2013, 08:41:47 am
content: Wasn't there many years a go a heist where someone stole a truckload or some truckloads of memory chips?
looking for a sidekick ... - Page 1
Forum section: electronics / general

author: Alphatronique
author_rank: Regular Contributor
timestamp: September 30, 2013, 06:24:38 pm
content: Hi alli was orner of a small one man design company and pcb assembly fab in canadasince english was not native for me i look for find a sidekickfor ack as public image/representation of the company and for general project brainstorminglook for retired engineer or electronic student(university) or similar that have electronic in her blood and have some free timeso if interest some one let me knot in pmBest regardMarc L.

author: Spikee
author_rank: Frequent Contributor
timestamp: September 30, 2013, 06:48:22 pm
content: Canada only I presume.

author: Alphatronique
author_rank: Regular Contributor
timestamp: September 30, 2013, 07:19:22 pm
content: Hiworldwidealmost all my customer and friend was already spread over the globeBest regard
Awesome home theater specifications! - Page 1
Forum section: electronics / general

author: divelectservices
author_rank: Contributor
timestamp: September 30, 2013, 04:11:51 pm
content: Product InformationWith the Philips HTS3450, the user has a home theater system that allows them to experience enhanced music and videos. Favorable features of this Philips home theater system includes direct USB ports, 1080i HDMI display and playback of MP3 music files. This 5.1 channel home theater system has a built-in graphic equalizer and magnetically shielded speakers. Measurements of the satelite speakers frequency ranges from150 to 20000 MHz. Users can expect a frequency range of40 to 150 MHzfrom the Philips subwoofers. The Philips HTS3450 can play CDs and DVDs. The design of this Philips home theater system allows users to place the system in a standing or flat position. Users can plug their portable devices directly into this 5.1 channel home theater system. Since this Philips home theater system has built-in Dolby Digital and DTS, users do not need external decoders. The Philips HTS3450 provides deep bass and can capture low tones. This system processes several channels of audio information to provide evenly spread sound within an area.

author: TimNJ
author_rank: Super Contributor
timestamp: September 30, 2013, 04:34:10 pm
content: A very small mistake but a big one all the same.

author: Stonent
author_rank: Super Contributor
timestamp: September 30, 2013, 06:02:27 pm
content: That's not awesome at all. I can't hear anything.
Amazing 250 year old robots (early programmable computers) - Page 1
Forum section: electronics / general

author: Smokey
author_rank: Super Contributor
timestamp: September 26, 2013, 08:00:36 pm
content: Check this out. This is amazing on so many different levels.http://en.wikipedia.org/wiki/Jaquet-Droz_automatahttp://www.chonday.com/Videos/the-writer-automaton

author: Kjelt
author_rank: Super Contributor
timestamp: September 26, 2013, 10:51:47 pm
content: did you see Hugo?

author: fluxcapacitor
author_rank: Frequent Contributor
timestamp: September 27, 2013, 12:55:03 am
content: i saw one of those writing robots tonight on a programme called museum secrets .I can recommend watching a documentary called the 2 thousand year old computer, its on youtube .
HP 4396A Service Manual - Page 1
Forum section: electronics / general

author: ed
author_rank: Newbie
timestamp: September 26, 2013, 04:55:31 am
content: Hi Guys,I'd like to ask anyone of you who have a service manual of HP 4396A Network/Spectrum Analyzer. I managed only to have a service manual of HP4396B and some of the contents of it is not applicable to HP 4396A. Appreciate to those who have and can email to edgardo_azur@yahoo.com.Thanks,ed
Really? - Page 1
Forum section: electronics / general

author: c4757p
author_rank: Super Contributor
timestamp: September 24, 2013, 10:05:10 pm
content: Of all theacronyms....I know that when spelled with aZit's a dude's name, but...

author: skipjackrc4
author_rank: Regular Contributor
timestamp: September 25, 2013, 12:07:03 am
content: Well, it could be worse...
AVR Freaks and support.atmel.com are (no longer) down - Page 1
Forum section: electronics / general

author: nitro2k01
author_rank: Frequent Contributor
timestamp: September 23, 2013, 05:52:08 pm
content: Anyone know why? Planned maintenance or server problem?

author: uoficowboy
author_rank: Regular Contributor
timestamp: September 23, 2013, 06:29:00 pm
content: Quote from: nitro2k01 on September 23, 2013, 05:52:08 pmThe AVRFreaks website has suffered from reliability issues for years. It has improved significantly in recent times, but is still an issue. Normally it's back up within a day!

author: Stonent
author_rank: Super Contributor
timestamp: September 24, 2013, 01:21:06 am
content: Quote from: uoficowboy on September 23, 2013, 06:29:00 pmMaybe they should upgrade the server from 8 bit?

author: Bored@Work
author_rank: Super Contributor
timestamp: September 24, 2013, 08:08:03 am
content: Quote from: mojo-chan on September 24, 2013, 08:06:55 amIt would just separate the men from the quiche eaters.

author: nitro2k01
author_rank: Frequent Contributor
timestamp: September 24, 2013, 08:42:24 am
content: http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=136522

author: peter.mitchell
author_rank: Super Contributor
timestamp: September 24, 2013, 09:36:37 am
content: Quote from: Bored@Work on September 24, 2013, 08:08:03 amQFT

author: Unknown
author_rank: Unknown
timestamp: September 24, 2013, 08:15:32 pm
content: Quote from: Stonent on September 24, 2013, 01:21:06 amI find it makes me feel old going over there, all that squinting at the tiny band of writing that is jammed in the middle. Maybe these things are related, perhaps the forum view is fixed at 8 bits wide?

author: Bored@Work
author_rank: Super Contributor
timestamp: September 25, 2013, 10:16:59 am
content: Quote from: mojo-chan on September 25, 2013, 10:06:27 am"figuring it out" - Ah, the credo of the copy-paste programmer. Meaning taking whatever half working solution comes up, without understanding it. Stack Exchange is the blind leading the blind. And other blinds voting stuff randomly up. If all you ever want to be is a copy-paste programmer than Stack Exchange is certainly right for you.

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 25, 2013, 04:44:04 pm
content: i believe the point was... if avrfreak is dead, and your nose dives, then you are quinche eaterthat will separate from others who are still "carry on". copy-paste is not that bad, its just when you have nothing to copy, what are your gonna do? and btw... copy pasting without fully "specifying" the performance or reliability of the code is another type of "blind faith".

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 26, 2013, 01:02:14 pm
content: Quote from: mojo-chan on September 26, 2013, 10:56:39 amthinking that human work on mathematics is a misguided faith. we are not math machine, we just think we aremath is just a very small portion from the "general law"

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 26, 2013, 05:10:20 pm
content: i'm a math teacher and i hate to repeat myself
VMP3203 DC-DC Converter. - Page 1
Forum section: electronics / general

author: PeterG
author_rank: Frequent Contributor
timestamp: September 26, 2012, 10:20:08 am
content: Hi all, has anyone used one of these ?The datasheet seems a little light.It claims to be 5v at 3 Amps.http://img.v-module.com/datasheets/DS_VMP3202_3.pdfRegards

author: tld
author_rank: Regular Contributor
timestamp: September 23, 2013, 05:57:32 pm
content: Quote from: PeterG on September 26, 2012, 10:20:08 amReplying to this old post, because it came up as the first Google-result when I searched for vmp3203, yet was unanswered.These modules are sold fairly cheap by DX (and others?). I haven't put it through any kind of long-term testing, but impression so far is that they work more or less fine, though I'm not entirely certain about the rating. The 5V 3A-version seems happy at least to about 2 or 2.5A, but does need external caps. If you want a drop-in switcher in a module-format for a prototype/mockup-kinda thing, chances are these'll do.Note that you *can* solder legs on the thing, in which case it'll work in a breadboard. 2A+ might be a bit heavy for a breadboard though.tld
BOOK: Makers At Work - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: September 21, 2013, 12:16:37 am
content: I'm interviewed in this book, along with many other names you'll know, check it out:http://amzn.to/1aSaWEB

author: EEVblog
author_rank: Unknown
timestamp: September 21, 2013, 04:12:48 am
content: Quote from: ErikTheNorwegian on September 21, 2013, 02:34:30 amActually, I wasn't entirely happy with the result of my article, because it was done (as the others were I believe) as a Skype interview, and really it's just me answering the authors questions. It's not like I was given carte-blanche in writing my chapter, the content was whatever questions the author happened to pose to me.My bit was ok though, but it would have been a lot different if they had asked me to write it.

author: EEVblog
author_rank: Unknown
timestamp: September 22, 2013, 10:23:57 am
content: Quote from: ErikTheNorwegian on September 21, 2013, 04:34:42 amI've got a No Starch Press very interested in me writing a book for them, but
Hardware Trojans Reality Or Fantercy  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: September 21, 2013, 07:54:52 pm
content: some researchers have developed what they call a hardware trojan. They have released a white paper on stealthy dopant level hardware Trojans showing how integrated circuits can be maliciously compromised during manufacture By switching the doping on few transistors.quite a interesting form of attack despite the sheer unlikeness of it food for thought i guess.http://people.umass.edu/gbecker/BeckerChes13.pdf

author: free_electron
author_rank: Super Contributor
timestamp: September 21, 2013, 10:18:37 pm
content: Quote from: mojo-chan on September 21, 2013, 08:02:45 pmBuy chinese then

author: vk6zgo
author_rank: Super Contributor
timestamp: September 21, 2013, 11:59:42 pm
content: Does anyone else find this funny?But then again,us Aussies call sticky tape "Durex",& wear thongs on our feet,so maybe not!

author: Alexei.Polkhanov
author_rank: Frequent Contributor
timestamp: September 22, 2013, 12:19:47 am
content: I would like to think that implementing encryption independently in FPGA would make it somewhat safe from back doors but I doubt that FPGA don't have trojans in them.Attached photo is a module from Russian AESA Radar system.http://www.ausairpower.net/APA-Zhuk-AE-Analysis.htmlWhen NSA finds this photo - what is the next logical step?There are lot of smart and ambitious people that work for organisations like NSA and they are well paid, mostly bored and need something to do. If we could just divert all these brain power into something useful ...

author: marshallh
author_rank: Unknown
timestamp: September 22, 2013, 12:52:25 am
content: Actel/Microsemi Proasic3 parts have known designed-in weaknesses... Xilinx makes a separate product line just for mil use, including rad-hard products, and other ones that aren't shown on their web site.
BeagleBone Black manufacturing video (short) - Page 1
Forum section: electronics / general

author: rsjsouza
author_rank: Super Contributor
timestamp: September 19, 2013, 01:56:43 pm
content: Quite interestingvideothat shows the manufacture of the BeagleBone Black; particularly interesting is the selective soldering process... I really don't recall seeing that...

author: nctnico
author_rank: Super Contributor
timestamp: September 21, 2013, 02:23:11 am
content: Same here. I've never seen or heard about selective soldering before so thanks for posting the link to the video!

author: Stonent
author_rank: Super Contributor
timestamp: September 21, 2013, 02:40:10 am
content: It looks like a water fountain.

author: marshallh
author_rank: Unknown
timestamp: September 21, 2013, 03:00:30 am
content: Heard about the method but haven't seen the solder head on video. Cool

author: rsjsouza
author_rank: Super Contributor
timestamp: September 21, 2013, 11:06:13 am
content: Stonent, when you mentioned water fountain I thought of this:A chocolate fountain for nerds...

author: Unknown
author_rank: Unknown
timestamp: September 21, 2013, 11:59:50 am
content: Off to start playing with plant sprayers and washing machine pumps.........