hybridfree/eevblog-posts huggingface dataset:
EDN / Electronics Design / Magazine etc etc Market Research Phone Hell - Page 1
Forum section: electronics / general

author: gregariz
author_rank: Frequent Contributor
timestamp: May 21, 2012, 07:01:30 pm
content: I'm just wondering if any of you guys in the US are experiencing crazy amounts of phone activity from the trade magazines?.I'm getting rediculous amounts of email and phone activity from these magazines that just looks like market research activity that they must sell on. In fact many times they ring up, say you need to renew the subscription and quickly mention a magazine name, and its not a magazine I actually get. At the end of the call.. they always say ... for security purposes, whats the color of your eyes, mothers maiden name etc etc. WTF? I was out for a couple days and checked my phone logs and found one of them had called 17 times, every half hour during the mornings. WTF?I've started ending subscriptions from these magazines. Anybody running into the same crap?

author: free_electron
author_rank: Super Contributor
timestamp: May 21, 2012, 07:10:17 pm
content: yeah they do that. lots of magazines have same publishing house. so they tend to 'propagate' ...i subscribe to all of them. lots of them are interesting to read.

author: SeanB
author_rank: Super Contributor
timestamp: May 21, 2012, 07:22:32 pm
content: My bugbear is the dozens of calls trying to sell PABX, copier/printer and IT services.Add to that the insurance scams/offers that annoy at all hours of the day.

author: bradleytron
author_rank: Regular Contributor
timestamp: May 22, 2012, 12:24:04 am
content: They say nothing is free!The same bull shit reaches all the way up here into Canada!. I hated all the nonsense so much that I essentially stopped applying for the magazines. I access the web sites and pick and choose the articles I like to read, e.g., Design Ideas in EDN and Electronic Design.Take care

author: vk6zgo
author_rank: Super Contributor
timestamp: May 22, 2012, 12:51:01 am
content: Then there's the Indian Lady/man who rings you and purports to be "from Windows".Some of the more sophisticated ones say they are from "Microsoft Computer Service",or something like that.The thing is,you get repeat calls,even after you hang up,be rude to them,or whatever.My theory is that there is a "Super Scammer" who sells the numbers & the spiel to a million hopefuls who think they are on a good thing,hence the multiple calls.

author: amyk
author_rank: Super Contributor
timestamp: May 22, 2012, 08:24:12 am
content: The "EE" way of solving the problem would be to put in an automatic hangup device. Something that'll automatically answer the phone and let you hear the first few seconds, and hang up if you don't explicitly pick up the phone to answer.
Suggestions for VLSI Textbook - Page 1
Forum section: electronics / general

author: jp1390
author_rank: Contributor
timestamp: May 21, 2012, 04:00:12 am
content: Hi all,I am taking some initiative for my current job and learning more about the industry and the production flow and I am wondering what your thoughts were on some textbooks that could aid in my understanding. From IC design to wafer fabrication, testing, die testing, and so on.I have heard much about Rabaey's Digital Integrated Circuits, but would like to get other opinions.Thank you,JP

author: free_electron
author_rank: Super Contributor
timestamp: May 21, 2012, 05:58:43 am
content: Fab technology or design ?The book from Veendrick is pretty good.

author: jp1390
author_rank: Contributor
timestamp: May 21, 2012, 03:54:25 pm
content: More so the fabrication side and testing side, but design wouldn't hurt either.

author: free_electron
author_rank: Super Contributor
timestamp: May 21, 2012, 05:33:29 pm
content: hmmm.. i'll poke around and see what we have laying around (i work in the field)

author: jp1390
author_rank: Contributor
timestamp: May 21, 2012, 06:15:27 pm
content: Thanks!

author: A-sic Enginerd
author_rank: Regular Contributor
timestamp: May 21, 2012, 09:24:40 pm
content: May help to figure out what you're really after.You'll find plenty of good stuff related to the design side (sorry, don't have any of my books right in front of me so couldn't give you titles).The fab side......yeah, that's a bit of another story. I do have one at home, just not sure if it's what you're really looking for. It was sort of an introduction to some of the equipment and steps of the process. Think of it as the physics behind what goes on.Testing...that might be really hard to come by, if any actually exist. That's sort of like asking "how do you do engineering"
DSP or PIC with spdif input and buffered data operation - Page 1
Forum section: electronics / general

author: pfm
author_rank: Regular Contributor
timestamp: May 12, 2012, 07:17:12 pm
content: I have never used a PIC and the choices out there are overwhelming.http://en.wikipedia.org/wiki/List_of_common_microcontrollers. So I need your help in finding a pic that would allow me to do the following.I know there are a few microcontrollers out there that have an spdif input. What I am trying to find out is if there are any (DSP or non-DSP) microcontollers out there that have an spdif input and that can move the audio samples into a fifo type buffer/queue first. And then it would allow me to clock the samples out (notas spdif out but as serial out) at specific clock intervals (say every 512th tick of a 22.5792Mhz master clock). An additional output line that can go high or low alongwith the sample that is output would be great(think of this line as a Latch Enable type of signal).I'd appreciate if anyone could atleast point me in the right direction in the pic world.Thanks!

author: jahonen
author_rank: Super Contributor
timestamp: May 12, 2012, 08:22:56 pm
content: I don't know if any PICs actually have a SPDIF input, but there are some dsPICs with a serial audio interface, where you can input data from SPDIF using a Cirrus Logic CS8416 or similar SPDIF receiver.Regards,Janne

author: pfm
author_rank: Regular Contributor
timestamp: May 20, 2012, 02:27:45 pm
content: yes I see there are some true dsp processors that have spdif input but I cant seem to figure out if they have programming capabilities to do what I intend to do.The closest I found something was this on a XMOS -http://github.xcore.com/sc_spdif/api-rx.html
colour kindle any one going to upgrade ? - Page 1
Forum section: electronics / general

author: siliconmix
author_rank: Frequent Contributor
timestamp: May 21, 2012, 08:09:02 am
content: i haven't got the black and white yet

author: EEVblog
author_rank: Unknown
timestamp: May 21, 2012, 09:12:56 am
content: I read books with 99% text. I don't really see the need for color in an e-Ink eBook readerDave.

author: aluck
author_rank: Regular Contributor
timestamp: May 21, 2012, 09:58:49 am
content: Quote from: EEVblog on May 21, 2012, 09:12:56 amDo you read magazines? CACM has nice pictures. At least, they are nice, if you have a color screen. And they are terrible when converted to grayscale. Sometimes they overlay a picture over the article text, and then it is unreadable in grayscale.

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: May 21, 2012, 10:59:13 am
content: I saw someone showing off the nook with the back light on the e-ink display. Wouldn't this be more attractive for all you book worms?

author: MikeK
author_rank: Super Contributor
timestamp: May 21, 2012, 11:37:57 am
content: Do you mean the Kindle Fire? It doesn't use the same display as the e-ink Kindle.

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: May 21, 2012, 12:12:14 pm
content: Quote from: MikeK on May 21, 2012, 11:37:57 amSkip in about 17 mins.https://www.youtube.com/watch?list=PLD1F9B84726BCA762&feature=player_detailpage&v=ELJ9EE4OhTU#t=1037s
Simulation program - Page 1
Forum section: electronics / general

author: IvoS
author_rank: Frequent Contributor
timestamp: May 20, 2012, 10:50:16 pm
content: Can Someone suggest any freeware simulation programs besides LTspice?

author: free_electron
author_rank: Super Contributor
timestamp: May 20, 2012, 11:43:42 pm
content: TIna ? ( Ti's version )BeigeBag spice ( limited version )

author: TerminalJack505
author_rank: Super Contributor
timestamp: May 21, 2012, 01:47:26 am
content: There is alsoQucs.It seems to be an abandoned project, however.

author: codeboy2k
author_rank: Super Contributor
timestamp: May 21, 2012, 03:33:12 am
content: Quote from: TerminalJack505 on May 21, 2012, 01:47:26 amI tried Qucs a few times, I kinda liked it. I use LTSPICE and Qucs off and on. Qucs has many usability quirks.The last Qucs release was a year ago. The last source code update was about 5 months ago. Maybe I'll take it over:)I hate that their still using sourceforge and SVN. SVN makes me gag. I like git or mercurial, they're equally as good, and far better than SVN.They should move to github, they'll probably get more contributors fixing things and sending pull requests.

author: siliconmix
author_rank: Frequent Contributor
timestamp: May 21, 2012, 08:06:16 am
content: http://www.falstad.com/circuit/give this a go .not everyone's cup of tea but i like it.its free .
Confessions of a Junkie - Page 1
Forum section: electronics / general

author: nick.sek
author_rank: Regular Contributor
timestamp: May 27, 2012, 08:50:19 pm
content: Hey everybody, I just did a quick study break today; and recorded a new video for my youtube channel.Focusing on scraping electronics and all that jazzSo please tell me what you think

author: nick.sek
author_rank: Regular Contributor
timestamp: May 27, 2012, 11:12:44 pm
content: I could see some people actually watching this for something with a little more kick, but it is already titled in the video; so it will stay. As I can't stand waiting for youtube to actually load my content. But thanks man.
EEVBlog Wiki Question - Page 1
Forum section: electronics / general

author: caffeinatedbard
author_rank: Regular Contributor
timestamp: May 18, 2012, 01:47:05 pm
content: I was browsing through the eevblog wiki in the electronics books section and a question popped in mind.http://eevblog.com/wiki/index.php?title=Electronics_Books] http://eevblog.com/wiki/index.php?title=Electronics_BooksWhat is the process in place, if at all, for a book or any other linked resource to be approved to show up on the list?I would like to volunteer to put some effort in editing that particular page to add a quick summary of the strong points and weakness that each book provides based on feedback from the forum.Any comments are welcome!-bard

author: Unknown
author_rank: Unknown
timestamp: May 20, 2012, 01:13:04 am
content: Of course Dave will have the final word on this, but I'm not aware of any formal process for the wiki. What it appears to lack most is some attention. If you have something useful to add, please feel free.

author: EEVblog
author_rank: Unknown
timestamp: May 20, 2012, 11:18:51 am
content: You just click the Edit button and add ay info you want to existing pages.You do have to pass a spam test though, but that's it.I've had to disable new page creation die to spam though. But if you want a new page added to the main page just let me know.Dave.
can anyone suggest a good web developer company. - Page 1
Forum section: electronics / general

author: Simon
author_rank: Unknown
timestamp: May 19, 2012, 06:58:19 pm
content: Hello everyone, I am looking for quotes from a company to develop a website for us (us being Rotaract in the UK). We are looking to design a new website to be used nationally, I've had one conversation so far with a prospective company but they will be basing it off of Word press. I don't think WordPress can hack what we want, I think really we need a custom website written in PHP directly. Can anyone suggest a company as I need to look around for quotes. UK companies only please.

author: Simon
author_rank: Unknown
timestamp: May 19, 2012, 09:02:50 pm
content: thank you Westfield.I am attaching the basic plan or specs that I drew up for this website in the event anybody wants to read them, although it's not exactly the sort of thing you want to take to bed to read. Essentially I'm looking for a website that will allow communication between all registered members but with enough control to prevent issues like spam or abuse. On top of that I need to put some fancy pages to attract people. Rotaract has many clubs in the country organised into districts. So basically this website needs to allow communication between individual club members, clubs and districts, as well as display information about each club. Clubs should also be ale to use the website to communicate with their members and the rest Rotaract in the UK.

author: GeoffS
author_rank: Unknown
timestamp: May 20, 2012, 03:00:24 am
content: Have you tried contacting other Rotoract groups internationally to see if they have anything you might be able to use?It could be cheaper to modify an existing design rather than have one written from scratch.

author: Simon
author_rank: Unknown
timestamp: May 20, 2012, 07:07:22 am
content: yes we are also looking into that, German Rotaract has quite a good website and I'm waiting to hear back from a guy. But obviously I need someone who will do PHP to modify it. Somebody who only builds on WordPress is no good to me in modifying an existing PHP website.
Heathkit IM-5258 THD Analyser Manual - Page 1
Forum section: electronics / general

author: EmbeddedEric
author_rank: Contributor
timestamp: May 21, 2012, 06:00:50 pm
content: I just bought a Heathkit IM-5258 Total-Harmonic-Distortion Analyser on ebay and I haven't had much luck finding a reasonable priced copy of the manual.I did find a few sites willing to sell me the manual for $30. I am not opposed to buying the manual, but $30 seems a bit step for a handful of pages of paper, when I bought the actual IM-5258 for $100.Any ideas on lower cost sources for this manual? I am ok with buying a pdf scanned version as I am mostly just looking for the IM-5258's specifications.Thanks,Eric

author: Dawn
author_rank: Regular Contributor
timestamp: May 21, 2012, 07:07:13 pm
content: There's a Yahoo group dedicated to Heathkits.http://groups.yahoo.com/group/heathkit/I've been able to obtain manuals on some rather obscure pieces of test equipment simply for asking there. Most of the manual sources on the net for Heathkit have been taken down a few years ago because of threatened legal action by someone who purchased the rights to them a few years ago and regularly pursues their removal from archive and manual sales sites unless a royalty arrangement has been made. Many of those manuals have been archived in the member's personal files of many different forums and shared on request.

author: EmbeddedEric
author_rank: Contributor
timestamp: May 24, 2012, 12:36:25 am
content: Thanks Dawn for the heads up on the Heathkit Yahoo groups. I joined and posted a question about the IM-5258 Manual and a very nice guy from Texas is going to be mailing and loaning me a manual for a few weeks.I am again blown away by how supportive and helpful most people in the Hobby/DIY Electronics forums are.Thanks,Eric
fumin .fed up  - Page 1
Forum section: electronics / general

author: siliconmix
author_rank: Frequent Contributor
timestamp: May 18, 2012, 08:33:09 pm
content: http://www.ebay.co.uk/itm/310399401142?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649#ht_2211wt_917i've been emailing the seller about the rating's for the red caps .he never replies.it's been one of those days.all we'll hear now is about the queen's golden jubilee.wtf.scrap all that .there you are athiest anti royalist .meh.

author: SeanB
author_rank: Super Contributor
timestamp: May 18, 2012, 08:41:23 pm
content: Animated GIF's.................................................................. Seizure city!Probably they are 2kV devices, 500pF. They are thick enough to be 2kv min, possibly as high as 5kV.

author: siliconmix
author_rank: Frequent Contributor
timestamp: May 18, 2012, 08:44:10 pm
content: could be but they might be 22pf and could be 10kv .you never know they look russian

author: G7PSK
author_rank: Super Contributor
timestamp: May 18, 2012, 08:55:45 pm
content: I have not seen those bee hive capacitors for many years, televisions from the 60's had lots of them I used to harvest them from scrap sets.

author: SeanB
author_rank: Super Contributor
timestamp: May 18, 2012, 08:58:57 pm
content: Spend a tenner, you could be surprised......

author: PeterG
author_rank: Frequent Contributor
timestamp: May 19, 2012, 02:20:39 am
content: Quote from: SeanB on May 18, 2012, 08:41:23 pmThats almost painful to look at. Very old school.Regards
75 megapixel camera at hadron where else - Page 1
Forum section: electronics / general

author: siliconmix
author_rank: Frequent Contributor
timestamp: May 18, 2012, 07:21:59 am
content: i wonder if they have to run defrag every now and then :p

author: M. András
author_rank: Super Contributor
timestamp: May 18, 2012, 08:38:12 am
content: they are responsible for the hard drive prices, buy tons of it every month and pay whatever price they ask. not they money its the tax payers money...btw impressive

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: May 18, 2012, 09:08:38 am
content: Re hard drive prices, the increase is largely attributed to the massiveflooding in Thailandlast year, which was inundating industrial parks that supply hard drive components.

author: Hypernova
author_rank: Unknown
timestamp: May 18, 2012, 01:56:51 pm
content: Quote from: M. András on May 18, 2012, 08:38:12 amEven if you can store all that data on drives you would need a place to store, archive and retrieve on demand all of them.

author: Mechatrommer
author_rank: Super Contributor
timestamp: May 18, 2012, 03:47:05 pm
content: Quotethey should hire this guyhttp://www.gigapixel.com/

author: dumle29
author_rank: Regular Contributor
timestamp: May 18, 2012, 05:08:01 pm
content: Quote from: M. András on May 18, 2012, 08:38:12 amIf you mean that they are responisble for the decrease in harddrive cost, you might be saying something.Harddrive prices went through the roof because:Quote from: AntiProtonBoy on May 18, 2012, 09:08:38 amBut their big investments in storage, means that the harddrive manufactors can afford to rebuilt the factories quicker.

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: May 19, 2012, 02:07:25 am
content: In terms of resolution density, 75 megapixels is really not that much for something like the LHC. Look how big that detector structure is. That 75 megapixel figure is distributed across many silicon scintillator/calorimeter plates, which shroud the beam line assembly in many layers. The real bottleneck here is the readout rate, which is absolutely massive.Check the gallery here:http://www-pnp.physics.ox.ac.uk/~barra/oxford/index.htmlReally cool stuff. I'd be very interested to learn about the technical challenges when it comes to making radiation hardened circuits for that environment. Would be cool to see an interview with one of the engineers that worked on the project.
ATTEN ADS 1102CAL - Page 1
Forum section: electronics / general

author: awwende
author_rank: Contributor
timestamp: November 08, 2011, 02:34:22 am
content: So I just got my new scope in the mail today as the title says, it's a ATTEN ADS1102CAL. Does anyone know if I can display measurements like my frequeny, duty cycle, Vpp, Vrms and such at the bottom of the screen like the Agilents ATTEN ripped off?

author: Bored@Work
author_rank: Super Contributor
timestamp: November 08, 2011, 06:31:05 am
content: What did the fine manual say when you consulted it? You did consult it, didn't you?

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 08, 2011, 09:31:08 am
content: or have you pressed any buttons while its turned ON to see whats menu popped up?

author: AsDef
author_rank: Newbie
timestamp: May 07, 2012, 08:58:56 am
content: Interesting video from UkraineLeCroy Waveace 112ATTEN ADS1102CM

author: saturation
author_rank: Super Contributor
timestamp: May 17, 2012, 06:54:44 pm
content: That's most excellent video. Its clear those waveaces are made by Atten's factory. Too bad the video didn't zoom more into additional markings on the PCB. However, if you go the youtube site instead and view it in 720p, you can get more details than the embedded video.

author: saturation
author_rank: Super Contributor
timestamp: May 18, 2012, 12:03:07 am
content: The most important screen caps.
Incoming stuff:  Fluke 510 AC Reference standard  - Page 1
Forum section: electronics / general

author: ErikTheNorwegian
author_rank: Frequent Contributor
timestamp: April 29, 2012, 11:27:56 am
content: In

author: Mint.
author_rank: Frequent Contributor
timestamp: April 29, 2012, 11:32:09 am
content: Why is everything you post called "incoming stuff"?Nice piece of equipment you got there, looks real old school

author: SeanB
author_rank: Super Contributor
timestamp: April 29, 2012, 11:40:35 am
content: Looks like it was used by an aircraft carrier servicing unit to generate reference supplies for avionics.

author: SeanB
author_rank: Super Contributor
timestamp: April 29, 2012, 11:54:57 am
content: It would have been buried inside a shoreside maintenance yard, inside a big rack along with a minicomputer that handled the testing. All it had to do was provide the output power for the system, and most likely the computer was never turned off during it's lifetime except for calibration and maintenance.

author: SeanB
author_rank: Super Contributor
timestamp: April 29, 2012, 12:24:24 pm
content: A lot more stable than the supply I used, that was 20 tons of rotating motor generator. Voltage regulation was pretty good, and frequency was within 0.5% of nominal, but subject to minor disturbance with step loads of more than 2kW. The ATE had it's own 3 phase 115V precision power supply, and a simple 26VAC transformer to generate the required 26VAC 400Hz reference supply.There was a discovery that the "Box, electrical protection" in the power bay to the aircraft did not disconnect if you applied, instead of the required 115VAC 400Hz 3 phase delta, 380VAC 50Hz. A mistake made by using the same socket orientation for both supplies, and only having a label next to the 2 otherwise identical sockets on the wall. New apprentice was instructed to "plug it into the socket" with a vague wave at the wall concerned. they then went to lunch leaving the systems to warm up ( needs 10 minutes or so for onboard comps to finish self tests) while connected to the ground cooling unit ( diesel powered, so did not use a power connector, as that is why the sockets were there for the few non motorised units) did its job. Was not me, just an instruction came around to ensure the sockets and cables could not be cross connected in this case.

author: Richard W.
author_rank: Regular Contributor
timestamp: April 29, 2012, 01:15:05 pm
content: looks very good at first sight...I also like your Pulse/Function Generator

author: Richard W.
author_rank: Regular Contributor
timestamp: May 02, 2012, 12:52:25 pm
content: Quote from: ErikTheNorwegian on April 29, 2012, 01:31:29 pmThere's also another HP 8111 A on the forumhttps://www.eevblog.com/forum/product-reviews-photos-and-discussion/(pictures)-hp-8111a-pulsefunction-generator-20mhz/

author: saturation
author_rank: Super Contributor
timestamp: May 17, 2012, 09:11:18 pm
content: Wow, near mint condition, and very nice devices to have. Older standards/references are better to have as they are well aged and stable. So treated right, it should hold it cal far longer than the recommended period in metrology.
Agilent U1253B Potential safety issue - Page 1
Forum section: electronics / general

author: mzacharias
author_rank: Frequent Contributor
timestamp: May 21, 2012, 04:59:46 pm
content: Unit set to DC volts, auto-range. Go to probe 120 volts AC, no indication on display, no beeper, no lightning symbol, nothing. This is with the secondary display set to temperature. If secondary display is set to AC, then that upper display show OL and the unit beeps.I think this is potentially serious, but could perhaps be fixed in a firmware revision.Thoughts?

author: free_electron
author_rank: Super Contributor
timestamp: May 21, 2012, 05:28:31 pm
content: if you set range to dc and measure ac it is normal you get nothing ...if the secondary display is set to AC its ranging mechanism will follow the dc ranging mechanism. so yes , it will display OL ... since the dc autoranging is turned all the way down.I don't see anything wrong with that.there is only one input attenuator ! and it is shared between ac and dc .

author: M. András
author_rank: Super Contributor
timestamp: May 21, 2012, 06:38:25 pm
content: the fluke 289 do autorange on dc+ac in dc position, the main display is on dc reading, secondary is on ac, both autorange as 1 reaches the range limit
1984 Comes Even Closer In UK  - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: May 17, 2012, 06:25:54 pm
content: Met Police to extract 'suspects' mobile phone datahttp://www.bbc.co.uk/news/technology-18102793my question is how dose this device exists ?surely its violating the pattens of devices manufactures, if so aren't they just asking to be suedlet alone the computer miss use act

author: G7PSK
author_rank: Super Contributor
timestamp: May 17, 2012, 07:45:48 pm
content: Why do they need such an expensive tool you can buy a sim card reader for £2.00 on e bay. Looks like more criminality from the police ( some one is getting a kick back).

author: xquercus
author_rank: Contributor
timestamp: May 17, 2012, 08:04:37 pm
content: There have been reports of warrantless copying of cell phone data by law enforcement in the US as well. Apparently some of these incidents have occurred involving people stopped for minor traffic violations and other non-criminal offenses. Of course, in most of the the civilized world, individuals are protected from unreasonable search. Law enforcement have been defending their actions based on the fact that have simply been asking individuals for their cell phones. Once an individual willingly hands the phone over to law enforcement, there is no need for a warrant. Of course, the individual could simply decline the request to hand over their cell phone (and that would likely be the end of it) but many people, when confronted by an authority figure, simply comply with such requests.As to the use of rather sophisticated hardware to do the copying, law enforcement is able to do more than simply copy the sim card. The are able to image pretty much image all of the data on the phone -- included supposedly deleted data. The devices are intended to be very simple to use. This makes is possible for an officer to, for example, image someones cell phone in the 90 seconds it takes to run their plates and check for warrants back in the patrol car. Sure, they could use a card reader, but the more sophisticated devices are faster, recover much more data, and are compatible with thousands of different phone models.

author: Dawn
author_rank: Regular Contributor
timestamp: May 17, 2012, 08:12:34 pm
content: There's several companies making such a device in the states. Most are deployed in police vehicles inside of a small attache case with several "dongles" that mate with various different phones. The devices are stand alone terminals that look similar to credit/debit card terminals. During the short time one is detained, these units can image the contents of the smartphone before the individual is even aware and his personal effects returned.

author: G7PSK
author_rank: Super Contributor
timestamp: May 17, 2012, 09:03:28 pm
content: This is going to put the price of very old phones up among the criminal fraternity. They did not have an easily accessible external connection.
Power Supply Question - Page 1
Forum section: electronics / general

author: T4P
author_rank: Super Contributor
timestamp: May 06, 2012, 04:51:21 pm
content: Getting a little ... confused over power supplies,Actually, seeing that precisegauge is selling the vantek 0-32v 5amps model w/o USB for 68$ each and 89$ shipping for two sets ... Hmm.and that i already have in mind to buy 2 30v 5amps linear PSU from totobay for 47$ each and 56.13$ in shipping.Is it worth the extra?

author: saturation
author_rank: Super Contributor
timestamp: May 17, 2012, 07:46:45 pm
content: You really can't tell with these supplies. There are some Vantek supplies reviewed on eevblog.It comes down what quality of VDC in terms of stability, noise, response etc., and build quality you are getting, not just the advertised or claimed volts or amps, or the upfront costs. Agilent has a paper on what to expect from a good lab supply including base specs.http://cp.literature.agilent.com/litweb/pdf/5952-4190.pdfIf it can't meet them, its just a question of getting the least bad, and good enough to meet your electronic design needs.
How does the trace appear to go backward - Page 1
Forum section: electronics / general

author: itdontgo
author_rank: Regular Contributor
timestamp: May 17, 2012, 08:11:26 am
content: I'm no big scope expert so there may be a good reason for this but I dont understand how the trace can appear to go back on itself. It's a simple one axis input (not x-y).Any ideas? It'll be around 50Hz as it's noise from a linear PSU. You could make good use of the MC34262 in this application!

author: rolycat
author_rank: Super Contributor
timestamp: May 17, 2012, 08:38:05 am
content: It appears to go backwards because itisgoing backwards.The electron beam in the CRT normally scans from left to right due to a ramp voltage applied to the deflection plates, but it takes a finite time to return to the start point, and this is what you can see.Most scopes have a circuit which cuts the intensity during this process, but on some scopes retrace blanking can be turned off, and on others the circuit can fail.

author: itdontgo
author_rank: Regular Contributor
timestamp: May 17, 2012, 08:53:38 am
content: OK you can see it going back in a straight line but that's not quite what I was refering to. What is not clear from the picture is the small teardrop shapes it forms in the red circles. I dont see how that can be explained by the trace sawtooth drive signal unless there is some noise on that signal within the scope i.e. the scope is faulty.I could be completely wrong if course!

author: steve_w
author_rank: Regular Contributor
timestamp: May 17, 2012, 09:49:49 am
content: looks like a triggering problem. reduce the intensity of trace and remove the flyback. Then see if you adjust the triggering for a more stable display.Use and external trigger for best results.regardsSteve W

author: Gall
author_rank: Frequent Contributor
timestamp: May 17, 2012, 10:33:50 am
content: I saw exactly that on an old Russian scope due to "dry" electrolythic capacitor.The trace IS actually going backwards due to scan or trigger circuit malfunction.

author: rolycat
author_rank: Super Contributor
timestamp: May 17, 2012, 11:22:01 am
content: It's hard to tell if it's a scope malfunction or dodgy triggering given the messy signal, but the fact that you can see the retrace does suggest that your old soldier may be overdue for retirement.What happens if you feed it a clean sine or triangle wave and get a good trigger? If that waveform goes backwards as well then you need to repair your scope (or buy a less knackered one).
Can anyone spot the first mistake here? - Page 1
Forum section: electronics / general

author: HackedFridgeMagnet
author_rank: Super Contributor
timestamp: May 18, 2012, 02:19:36 pm
content: How about a misused plural in the title.I don't think that's what you mean though.

author: bullet308
author_rank: Frequent Contributor
timestamp: May 18, 2012, 02:23:02 pm
content: The entire content of the video is a mistake.

author: G7PSK
author_rank: Super Contributor
timestamp: May 18, 2012, 02:35:42 pm
content: The towel is not on the Alligators head more on the neck, and when I have seen that trick in the past the person has jumped onto the Alligator and not crept up on it slowly. That man was obviously far too nervous and not bold enough in his actions.

author: vk6zgo
author_rank: Super Contributor
timestamp: May 18, 2012, 02:44:43 pm
content: Quote from: G7PSK on May 18, 2012, 02:35:42 pmThat is what I noticed,too.I've seen people doing that with big saltwater crocs--you usually need several people,for those.A big "Saltie"could eat an alligator for breakfast & hardly burp!73,VK6ZGO

author: bullet308
author_rank: Frequent Contributor
timestamp: May 18, 2012, 02:47:37 pm
content: With a croc, he would be missing major pieces or dead.

author: saturation
author_rank: Super Contributor
timestamp: May 18, 2012, 02:56:44 pm
content: When Steve Irwin was alive his group did it ad nauseam, IIRC they leaped quickly and sat near the shoulder blades of the upper arms then push down with all their body weight on the snout. The scientist sat on the torso allowing the croc to whip around. If the beast was too large another person had to also leap on the back, to keep the tail end from whipping about.

author: SoftwareSamurai
author_rank: Regular Contributor
timestamp: May 19, 2012, 12:57:53 am
content: I was thinking more along the lines of:"First mistake: Thinking you're Steve Irwin."

author: itdontgo
author_rank: Regular Contributor
timestamp: May 19, 2012, 03:38:59 am
content: He isn't an Aussie

author: Hypernova
author_rank: Unknown
timestamp: May 19, 2012, 07:51:08 am
content: Forgot to exclaim to the camera "Ain't she a beauty!" before he starts.

author: siliconmix
author_rank: Frequent Contributor
timestamp: May 19, 2012, 10:26:20 am
content: i dont think that fella tasted very good otherwise the croc would have taken his arm.
Ignore User Option? - Page 1
Forum section: electronics / general

author: krenzo
author_rank: Regular Contributor
timestamp: May 15, 2012, 07:50:27 pm
content: Does this forum have an option to ignore a user which will hide all posts/topics by them? I like to use the "Show unread posts since last visit" link, but I'm becoming annoyed by those who are selling things in Buy/Sell and keep bumping their thread to keep it visible.

author: T4P
author_rank: Super Contributor
timestamp: May 15, 2012, 07:58:02 pm
content: Quote from: krenzo on May 15, 2012, 07:50:27 pmYou can add them to your ignore list which BravoV has done to mehttps://www.eevblog.com/forum/beginners/lab-equipment/msg109301/#msg109301

author: Mechatrommer
author_rank: Super Contributor
timestamp: May 15, 2012, 08:02:12 pm
content: ignore user... there's a button in your profile. ignore a thread? you do it in your head, for now. or the workaround is to tick the thread and "mark as read" button

author: krenzo
author_rank: Regular Contributor
timestamp: May 15, 2012, 08:08:10 pm
content: Quote from: Mechatrommer on May 15, 2012, 08:02:12 pmThanks, that's definitely out of the way and hard to find.

author: LEECH666
author_rank: Frequent Contributor
timestamp: May 16, 2012, 10:47:51 am
content: How about this?
Signal generator soft ware - Page 1
Forum section: electronics / general

author: G7PSK
author_rank: Super Contributor
timestamp: May 14, 2012, 03:11:19 pm
content: Hi, has any one got any experience with this type of soft ware. I was thinking of giving it a try, are there any pitfalls with this sort of soft ware. I would be using a Panasonic toughbook laptop computer to run it on possibly along with a scope attachment. as I have just purchased two CF27's and a CF28 and thought that such a conversion might be an interesting project apart from a bullet proof oscilloscope is always handy.http://www.ebay.co.uk/itm/110878517356?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649#ht_2299wt_1185

author: jimmc
author_rank: Frequent Contributor
timestamp: May 14, 2012, 03:21:49 pm
content: Why not try this freeware first?http://www.sillanumsoft.org/prod01.htmit also includes ZRLC meter softwarehttp://www.sillanumsoft.org/ZRLC.htm(needs a simple hardware interface).Jim

author: sorin
author_rank: Frequent Contributor
timestamp: May 14, 2012, 04:34:26 pm
content: Quote from: jimmc on May 14, 2012, 03:21:49 pmYes, very good software.

author: G7PSK
author_rank: Super Contributor
timestamp: May 14, 2012, 05:05:05 pm
content: OK thanks for that I will give it a try

author: T4P
author_rank: Super Contributor
timestamp: May 14, 2012, 05:57:28 pm
content: Visual Analyzerhttp://www.sillanumsoft.org/
Cree's New HV Guitar Amplifier - Page 1
Forum section: electronics / general

author: sonicj
author_rank: Frequent Contributor
timestamp: May 13, 2012, 09:17:14 am
content: OK, well... Sorta...I've seen similar setups before on Youtube, but they all sounded like @$$. That thing sounds basically sounds like a real amp/speaker! You might want to sit down before you look up the price on those MOSFETS.But anywho, what a cool way to demo your new products!-sj

author: SeanB
author_rank: Super Contributor
timestamp: May 13, 2012, 09:47:14 am
content: A nice way to prevent anybody touching your speakers, make them self electrified, with a built in light.

author: T4P
author_rank: Super Contributor
timestamp: May 13, 2012, 11:10:11 am
content: I thought IRF would come out with it first, but remembering who brought SiC LED's to the market first, yeah, was expecting it.

author: rsjsouza
author_rank: Super Contributor
timestamp: May 13, 2012, 12:13:58 pm
content: Beautiful setup, and what a nifty little coil too!

author: siliconmix
author_rank: Frequent Contributor
timestamp: May 13, 2012, 09:05:19 pm
content: in the start ben wasn't looking to confident
[YouTube] Showing the Ericsson T29s electro-luminescent backlight - Page 1
Forum section: electronics / general

author: iamwhoiam
author_rank: Contributor
timestamp: May 15, 2012, 11:45:35 pm
content: I had to take apart my Ericsson T29s *beautiful* phone, to inspect the LCD, so I thoughy why not film the beautiful EL backlight:https://www.youtube.com/playlist?list=PLD13F05C9A5DBEA61&feature=view_all
Assrape chair failure. Go China! - Page 1
Forum section: electronics / general

author: Rerouter
author_rank: Super Contributor
timestamp: May 12, 2012, 02:52:04 am
content: i am equally happy and disgruntled fromwhen i had a seat fail like that, disgruntled because my chair tried to stab/ sodomise me, happy that i was twisted on my seat stretching when it failed so it only punched me in the hip

author: Dawn
author_rank: Regular Contributor
timestamp: May 13, 2012, 12:19:00 am
content: Assrape? Now imagine this happening to a woman. ER physicians have seen everything, especially with men, but a V*****al impaling by a chair's gas spring column would be something for the medical journals. Can you say it's a Public Cervix Announcement to warn of the potential failure of these chairs?

author: vxp036000
author_rank: Regular Contributor
timestamp: May 13, 2012, 12:24:38 am
content: There's nothing wrong with that chair, it's a feature! I know a few folks I could sell this to.

author: LEECH666
author_rank: Frequent Contributor
timestamp: May 13, 2012, 12:34:35 am
content: Sort of want ...

author: vxp036000
author_rank: Regular Contributor
timestamp: May 13, 2012, 01:00:22 am
content: I hear that the next version is motorizedQuote from: LEECH666 on May 13, 2012, 12:34:35 am

author: pickle9000
author_rank: Super Contributor
timestamp: May 13, 2012, 01:06:08 am
content: Asscupuncture

author: Unknown
author_rank: Unknown
timestamp: May 13, 2012, 01:07:19 am
content: Meh! more designs of clueless graduates let loose on the public. It probably had an approval sticker with load rating for all the good it did. In the days before common sense went out of fashion, this sort of stuff never made it to retail shelves.

author: LEECH666
author_rank: Frequent Contributor
timestamp: May 13, 2012, 03:44:17 pm
content: Quote from: vxp036000 on May 13, 2012, 01:00:22 amAWESOME! CAN'T WAIT!

author: bilko
author_rank: Frequent Contributor
timestamp: May 13, 2012, 04:01:49 pm
content: Quote from: Uncle Vernon on May 13, 2012, 01:07:19 am+1

author: SeanB
author_rank: Super Contributor
timestamp: May 13, 2012, 04:06:03 pm
content: FEA with no concern as to safety margin, or to a production spread in the plastic, and it losing plasticiser and cold flowing with time.

author: metalphreak
author_rank: Frequent Contributor
timestamp: May 13, 2012, 08:14:04 pm
content: http://gizmodo.com/5157354/boy-killed-anally-when-office-chair-explodesCan't seem to find a "credible" source for this, but it makes me squirm in my chair nonetheless.
Why Electronics?  - Page 1
Forum section: electronics / general

author: nick.sek
author_rank: Regular Contributor
timestamp: May 13, 2012, 04:20:48 am
content: Hey everybody, I finished watching Dave's "When I was a boy" and decide to make my own blog on the same topic. And I was wondering what got you into electronics?

author: free_electron
author_rank: Super Contributor
timestamp: May 13, 2012, 05:03:32 am
content: Took a litle pocket 'transistor' radio apart at age six and 'tightened' all the screws on the mf transformers .... the end result was that one transistor got very hot and i burned my finger ... My parents decided to 'channel' my curiosity and got me a radioshack 100-in-1 experimenters kit ... at age 8 i etched my first pcb. I have an uncle that designed fire alarm systems so he helped me out by showing this ...After that all hell broke loose....

author: TriodeTiger
author_rank: Regular Contributor
timestamp: May 13, 2012, 05:34:04 am
content: My father or uncle had a 50-in-one kit from their childhood and showed it to me when I was a little boy, from at least the early 70's/80's. I was amazed that I can make an LED blink, make a light detector, and listen to sounds on the crystal earpiece included. I got discouraged when it required 20 whole connections to make an AM radio transmitter, how I had no clue.Took electronics in highschool, maybe it was a little fast paced and I hadn't gotten much out of it. Found the workbook years later and was just captivated by it all, the formulas, what you can do with just a few simple concepts.

author: siliconmix
author_rank: Frequent Contributor
timestamp: May 13, 2012, 07:03:35 am
content: just fascinated by radio as a very young kid.

author: G7PSK
author_rank: Super Contributor
timestamp: May 13, 2012, 09:10:35 am
content: When I was about eight my parents moved into an old rambling Victorian old vicarage. In the attic I found a glass cylinder with brass ends a black piece of something at one end and a ball joint at the other which had a piece of wire poking into the black thing. I asked my father what it was and he told me it was part of an old crystal set, My father found me a circuit diagram and we set about building the rest of the radio turning up the coli former on an old wood lathe he had getting the tuning capacitor out of an old radio from the junk yard and when we found the cats whisker had lost its spring we got a diode out of an old television that also came from the junk yard. When I took it to school others wanted the unit, so I built more. I ended up spending a lot of time over the next few years in that junk yard which used to get all the rubbish from the PYE works in Cambridge. I was fascinated by the stuff that was being dumped and took a lot home to take apart and find out how it worked. Truly wonderful times, these days the health and safety brigade would ensure that it could not happen.
Ericsson T28 battery safety: Li-po/Li-ion - Page 1
Forum section: electronics / general

author: iamwhoiam
author_rank: Contributor
timestamp: May 12, 2012, 01:41:52 am
content: Hi guys. I just read this eBay listing, and the wording made me slightly wary of my recent purchase of two "pattern" (non-genuine) replacement batteries for my Ericsson T28s; read...QuoteI know these things happen, but are they seriously saying that, unless you buy G£NUIN£ Ericsson batteries, the copies (with good review btw) will not have this safety circuit built in, in ALL cases? How can they know?Thanks.http://www.ebay.co.uk/itm/Amethyst-Purp-Ericsson-T29-T29s-/120904490417?pt=UK_Mobile_Phones&hash=item1c26781db1

author: amyk
author_rank: Super Contributor
timestamp: May 12, 2012, 09:07:59 am
content: If I were to guess I would say it's a "buy genuine" sales pitch.While it may be possible that some extremely cheap cells don't have the protection circuit, my experience with off-brand cells shows that even those intended to be installed in non-user-serviceable devices like iPods will have protection PCB on the cell itself.
One Hung Low - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: October 13, 2011, 12:18:25 pm
content: Greetings EEVBees:--I noticed in an early camera shot I could see the Altium booth, and I wondered if our hero would say hello. Towards the end, I thought, I guess he must have lost his nerve. How wrong I was."Man who have hole in pocket, feel cocky all day long." Lao Fu

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: October 13, 2011, 12:34:05 pm
content: So what naughty thing did you end up doing there Dave?

author: jpelczar
author_rank: Contributor
timestamp: May 09, 2012, 08:22:30 pm
content: One-Hung-Low song lyrics (partial). Listen to DEV - Bass Down LowIf you wanna die with meThere's some things you gotta knowI like my caps blastAnd my One-Hung-LowOne-one-one, one, One-Hung-LowOne, one, One-Hung-LowI, I, I like my caps blastAnd my One-Hung-LowOne, One-Hung-LowOne, one, One-Hung-LowI, I, I like my caps blastAnd my One-Hung-Low[Verse 1]It's like one, two, three, fuck itI'm bout to take this fuse and just stuff itMeasure the current with four more voltsI don't give a fuck about the overloadStraight fakin' temperature ratin'Wanna get ya probes in my pocketWanna get reading from my socketG-g-g-get a reading from my socketYeah, I like it loudAnd I'll make you shoutG-give you that PFCsYou know that concrete block

author: siliconmix
author_rank: Frequent Contributor
timestamp: May 11, 2012, 08:12:12 am
content: Quote from: jpelczar on May 09, 2012, 08:22:30 pmlike it
Oscilloscope probes adjustments (position of) - Page 1
Forum section: electronics / general

author: G7PSK
author_rank: Super Contributor
timestamp: May 10, 2012, 12:38:15 pm
content: Hi I am looking at oscilloscope probes and some of them have the trim adjustment in the probes and others at the BNC. end and some I have seen even have them at both ends. What I have no idea of is which layout is best and why. Do I go for the ones with the trims in the probe or the BNC. Or are the one with adjustment both ends better and are those harder to adjust. Which is most likely to get out of adjustment sooner etc. All thought on this are most useful.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: May 10, 2012, 03:40:42 pm
content: Not really an issue - more important are things like ergonomics, how flexible the cable is, how good spring-hooks are etc.

author: w2aew
author_rank: Super Contributor
timestamp: May 10, 2012, 06:54:35 pm
content: ...and, make sure that you get probes that are rated for (or exceed) the bandwidth of your scope, and have a compensation range that includes the input capacitance of your scope.

author: saturation
author_rank: Super Contributor
timestamp: May 10, 2012, 07:37:59 pm
content: For single adjustment probes, it doesn't matter which end [ although in theory, the BNC end gets less banged about, if you treat your probes roughly]. However, if you have adjustments on both ends: BNCandprobe handle, chances are it has both high and low frequency compensation. The 2-end adjustment probes are often more costly, and typically have higher frequency response than single adjusts. The high-end compensation is rarely adjusted compared to the low end. Some probes has both adjustments on the BNC end, and can have 2 - 3 adjust screws.Its good practice to check compensation before each daily use or if you are skeptical of any result; since its basically an adjustable cap changes in ambient temperature can make it drift about. Most of the time you'll just check the compensation, and not need to adjust it.Quote from: G7PSK on May 10, 2012, 12:38:15 pm

author: Rufus
author_rank: Super Contributor
timestamp: May 10, 2012, 08:01:45 pm
content: Quote from: w2aew on May 10, 2012, 06:54:35 pmDoesn't compensation at the scope end (where you can only add to the scope capacitance) mean a larger fixed capacitance at the probe end to accommodate the worst case scope?Asking the expert here