hybridfree/eevblog-posts huggingface dataset:
Silicon Labs uC - Page 1
Forum section: electronics / general

author: Strube09
author_rank: Regular Contributor
timestamp: October 21, 2010, 06:57:07 pm
content: Has anyone here used the Silicon labs uC?The rep was just in here and gave me a free Dev kit... Just looking for opinons....The cool thing for my industry is that some of their uCs have a boost regulator to operate down to 0.9V... great in the battery world.I don't know much about the 8051 core.Thanks

author: Bored@Work
author_rank: Super Contributor
timestamp: October 21, 2010, 07:58:16 pm
content: 8051 is the dinosaur of cores. If it works for you, fine. But modern is something different.If you need low-voltage MCU's, others have them, too. E.g. the ATtiny43U has a boost converter for operating down to 0.7 V.

author: Strube09
author_rank: Regular Contributor
timestamp: October 21, 2010, 08:20:23 pm
content: Yeah, I know they are a very old core... But hey... A free dev kit I won't complain.

author: Hypernova
author_rank: Unknown
timestamp: October 21, 2010, 09:00:23 pm
content: Unless you code in asm all the time IMO the cores don't matter that much. Of course if you are pushing for more in the same hardware/power envelope then yeah.

author: Strube09
author_rank: Regular Contributor
timestamp: October 22, 2010, 12:10:01 pm
content: Agreed, I mostly write in C so the core is almost blind to me. Sure I use some inline asm but very rare. Plus I am not doing any real heavy processing so the processing power really isn't that big of deal. I run most of my stuff at around 4MHz which is plenty fast enough. No need to get up to 20MHz.I guess it will come down to onboard peripherals (which core shouldn't matter) and production qty price.Quote from: Hypernova on October 21, 2010, 09:00:23 pm

author: Hypernova
author_rank: Unknown
timestamp: October 22, 2010, 01:51:04 pm
content: Quote from: Strube09 on October 22, 2010, 12:10:01 pmIMO Cypress pretty much has everyone beat in that department, their PSoC's allow you to create any combination of buses you want since it has an onboard FPGA.And they have whole series of them pared with 8051 cores

author: technovm
author_rank: Newbie
timestamp: November 22, 2010, 12:33:05 pm
content: I am using Silocon Labs uC since more than 2 years, and frankly speaking 8051 core is not obsolute. It is still being used in industry today. Silicon Labs offer large range of uC's.
Pickit 3 44 pin demo board - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: November 21, 2010, 11:40:16 pm
content: I soldered a 64 MHz crystal to the 44 pin demo board that comes with the Pickit 3 and I have some problems to get it to work correctly.I have the next setting for the oscillator type:#pragma config FOSC = HS //Osc type: High Speed Crystal/ResonatorI noticed the problem when I was using the USART to connect to hyperterminal, I was using the value set on the microcontroller table for a 64 MHz crystal, but I was getting the incorrect character sent from the ucontroller to hyperterminal.I connected the Rigol to check the crystal frequency and I got a result of about 21.3 MHz, then I used this value to calculate the baud rate and it worked with hyperterminal. This was just to make sure the frequency read by the oscilloscope was correct.Now I want to know what is wrong or missing to make this evaluation board to work with 64 MHz. The datasheet says we can use external connection up to 64 MHz.Please help me with this issue.Thanks.When I connect the rigol to the crystal oscillator I got the next waveform:

author: oPossum
author_rank: Super Contributor
timestamp: November 21, 2010, 11:53:53 pm
content: Microcontrollers typically do not work with high frequency overtone crystals.64 / 3 = 21.333, so probably a third overtone xtal.Use a 16 MHz crystal and the PLL to get 64 MHz.

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 21, 2010, 11:55:11 pm
content: have you tried to change the osc capacitor value and see whats the difference?

author: migsantiago
author_rank: Frequent Contributor
timestamp: November 22, 2010, 12:49:59 am
content: As oPossum said, a PIC cannot oscillate a crystal higher than 20MHz.Use a low freq crystal and boost it using PLL.

author: DavidDLC
author_rank: Frequent Contributor
timestamp: November 22, 2010, 01:10:37 am
content: I will change the crystal for a 16 MHz one and will use the PLL, thanks for your replies.

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 22, 2010, 01:22:45 am
content: PIC32MX3XX/4XX 80MHz max. anyway, i dont need any pic dev board anymore. i learnt to build one.
How to calculate the power factor of this signals? - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: November 18, 2010, 06:32:58 pm
content: Attached figure shows the measured input voltage (Yellow Trace) and current (Blue Trace) to an electronic device. I have the digital data of both signals. How can I calculate the power factor of the input signals?Thanks.

author: jahonen
author_rank: Super Contributor
timestamp: November 18, 2010, 06:37:07 pm
content: First, calculate RMS value of voltage and current separately. Multiplying those RMS values will give you the apparent power S.The second part is a bit more tricky. Calculate average of instantaneous voltage and current for one period P=average(i(t)*u(t)). This will give true power P. Now, per definition of power factor, you can calculate it as P/S, i.e. true power divided by apparent power.RegardsJanne

author: NiHaoMike
author_rank: Super Contributor
timestamp: November 18, 2010, 06:58:09 pm
content: Set up a multiplication of the two, then measure the RMS of the voltage and current and the average of the product. PF= "average product" / ("RMS voltage" * "RMS current")

author: onemilimeter
author_rank: Frequent Contributor
timestamp: November 18, 2010, 10:51:35 pm
content: Thanks NiHaoMike and jahonen for the very simple but efficient method.
Crystal and caps - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: November 21, 2010, 06:25:21 am
content: I bought a 67 MHz crystal to be used with 18pF.What will be the effect to use this crystal with 22 pF capacitors ?

author: Zero999
author_rank: Super Contributor
timestamp: November 21, 2010, 10:07:44 am
content: It should be fine.

author: Bored@Work
author_rank: Super Contributor
timestamp: November 21, 2010, 10:56:31 am
content: The crystal will be a few more PPM of. For many applications this isn't a problem.

author: Unknown
author_rank: Unknown
timestamp: November 21, 2010, 11:46:00 am
content: Remember that the two caps are in series, and the parasitic capacitance of the traces and clock input is also added. So CL=18pF does not mean that you should use two 18pF capacitors, depending on board layout, this number tends to be higher. Something like 26-31pF would be closer. Most MCU manufacturers have application notes on this. Atmel's AVR042 is pretty good. Microchip has AN949 and AN826. I'm sure there are lots more.

author: Zero999
author_rank: Super Contributor
timestamp: November 21, 2010, 01:13:48 pm
content: That's a point, are you talking about the load capacitance or the actual suggested circuit values?If it's the load capacitance, try 33pF, if 22pF doesn't work reliably.
RSS Feed Noob Question - Page 1
Forum section: electronics / general

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 16, 2010, 11:45:32 am
content: i've been trying to download Dave videos, but got dissapointed with the many broken download attempts, so i tried something else, reading the BitTorrent Manual, there is RSS Feed update thing. Fiddled with Dave Main Page (RSS), put any link that i thought to be. but still no success. So, anybody is willing to help?

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 16, 2010, 11:50:01 am
content: i think i've got it. itshttp://feeds.feedburner.com/ElectronicsEngineeringVideoBlogright? my bitTorrent just showing something after several minutes/hour of the setting. i thought i failed. damned! a glitch in internet matrix today i think.

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 16, 2010, 11:55:21 am
content: now! houston, we got a problem. tried to download the sparkfun vidz, whats up?

author: migsantiago
author_rank: Frequent Contributor
timestamp: November 16, 2010, 01:31:34 pm
content: Use Firefox and this linkhttp://youtube.com/rss/user/eevblog/videos.rssIf you want to download the videos and save them in your hard drive, use Firefox and DownloadHelperhttps://addons.mozilla.org/en-US/firefox/addon/3006/

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 16, 2010, 04:09:26 pm
content: thanx! can it resume download after disconnected?

author: migsantiago
author_rank: Frequent Contributor
timestamp: November 16, 2010, 07:11:59 pm
content: Quote from: shafri on November 16, 2010, 04:09:26 pmGive it a try, I don't know.
Dave, I'm curious about Watson - Page 1
Forum section: electronics / general

author: JohnS_AZ
author_rank: Frequent Contributor
timestamp: November 18, 2010, 02:02:22 am
content: Hey Dave, this is totally non-electronics, but I'm really curious...What's your take on the whole Paul Watson / Sea Shepard thing? On TV here they make him out to be a folk hero in AU.For the record, I'm impressed with and support the guy and his mission. I just keep waiting to see them launch a DIY Drone off that ship.

author: EEVblog
author_rank: Unknown
timestamp: November 18, 2010, 02:11:30 am
content: I like it when people actually do something instead of talking about it, and stick it to 'em.Especially when I'm passionate about the whales too.so my hats off to him and the other involved for that, I think it's great.But there has been some stuff exposed that not so great. Like (I think I heard) he ordered that the Ady Gill be sunk as publicity stunt or something like that.No such folk hero status here in Oz that I am aware of, he's Canadian I think, not Australian, so nothing to do with us really.But Australia does take a more active role in Whales conservation that most countries, because it's usually happening somewhere in our waters.I wish our government they'd spend more time trying to stop the Japanese whalers than the boat people. The $500M we just spent greasing up the Indonesians to help with the boat people fiasco would have bought a lot more legal action against the Japs.Dave.

author: PetrosA
author_rank: Frequent Contributor
timestamp: November 18, 2010, 02:39:59 am
content: Funny how you get a certain impression of other countries from TV... I recently watched all the episodes of Sea Patrol I could get a hold of. It was interesting how the RAN plays the same role as our Coast Guard does here, probably with the same shortage of man power, too. I think the show does a pretty decent job of showing the issues of illegal fishing pretty well, although I don't recall any episodes specifically dealing with Japanese whalers. Too politically sensitive maybe?

author: EEVblog
author_rank: Unknown
timestamp: November 18, 2010, 03:41:18 am
content: Quote from: PetrosA on November 18, 2010, 02:39:59 amYeah, that would be taboo I think, considering the Aust government have been the first to take Japan to court over it.Yes, the RAN do the same job as your Coast Guard in protecting our shoreline, although we have a shit load more coast to protect, with I'm sure fewer resources!Given that the Australian navy has little in the way of the international projection of power, they do send most of their time hunting down boat people and drug smugglers.Dave.

author: johnboxall
author_rank: Unknown
timestamp: November 18, 2010, 11:52:31 am
content: Australia is always going to make a bit of noise but generally *do* nothing when it comes to whaling - Japan is our number two trade partner and a defence ally.Same with China, they can get up to all sorts of tricks as long as they keep buying our minerals.

author: TheDirty
author_rank: Frequent Contributor
timestamp: November 18, 2010, 02:12:30 pm
content: Damn Canadians.
Bleeding edge science and music come together......  - Page 1
Forum section: electronics / general

author: kaptain_zero
author_rank: Regular Contributor
timestamp: November 17, 2010, 08:24:28 pm
content: Check out the "the Atlas boogie" towards the bottom.... a catchy tune?http://shenews.projo.com/2010/11/large-hadron-collider-scientis.htmlRegardsChristian
Trademarks and Copyright on PCBs - Page 1
Forum section: electronics / general

author: David
author_rank: Frequent Contributor
timestamp: November 14, 2010, 07:30:23 pm
content: Hi all,Just a quick question to confirm my understanding of trademark and copyright symbols...* Can I place a manufacturers registered trademark logo on one of my PCB designs? (Silkscreen). This is purely to show that the board supports those said devices...Regards,Dave

author: .o:0|O|0:o.
author_rank: Regular Contributor
timestamp: November 14, 2010, 07:55:33 pm
content: Quote from: David on November 14, 2010, 07:30:23 pmProbably not without their permission and especially not if it might mislead people into thinking they were buying a product by said manufacturer.If in doubt ask the manufacturer directly. Don't wait to be sued..o:0|O|0:o.

author: Neilm
author_rank: Super Contributor
timestamp: November 14, 2010, 08:35:31 pm
content: A manufacturers trademark logo is copywrite of the manufacturer. They own it. If you wanted to use it you would have to contact them and ask - don't be suprised if they say no, or impose really horrible conditions.Neil

author: EEVblog
author_rank: Unknown
timestamp: November 14, 2010, 09:00:30 pm
content: Technically, no, you can't do that.Generally speaking though the chip makers don't mind the major players putting their logo on the likes of a development/demo board that use their chips. But I think it would be prudent to ask for permission first.Dave.

author: David
author_rank: Frequent Contributor
timestamp: November 14, 2010, 09:10:18 pm
content: Thanks all. This has confirmed my suspicions, I think I will steer clear just to be on the safe side.
Current Sense / Current Shunt Resistors - The same? - Page 1
Forum section: electronics / general

author: David
author_rank: Frequent Contributor
timestamp: April 09, 2010, 11:42:37 am
content: Hi all,Very quick and simple question. Are current shunt resistors synonymous with current sense resistors?Regards,Dave

author: desolatordan
author_rank: Regular Contributor
timestamp: April 09, 2010, 02:56:18 pm
content: Yes.However when I hear shunt, I usually think of larger resistors with terminals like this:

author: Chad1
author_rank: Contributor
timestamp: November 13, 2010, 09:14:37 am
content: I know this is an older post, and probably a stupid question to most of you out there since I'm a student...but, what exactly is the purpose of a current shunt? I hear Dave reviewing multimeters mentioning the current shunt, and it's made me curious. I know I could search online for the answer, but I thought asking Dave and/or other experts would give me a better definition and purpose of a current shunt in a multimeter. Thanks!

author: Frenchie
author_rank: Regular Contributor
timestamp: November 13, 2010, 10:52:21 am
content: Quote from: Chad1 on November 13, 2010, 09:14:37 amBasically a very low known value resistor (often just a piece of wire) that you put in series with the current you want to measure. You then measure the voltage drop across the shunt and use Ohm's law to get the current.The shunt resistance needs to be small relative to the current so that you don't end up with a big voltage drop and impact the circuit by measuring it. Ie, the bigger the current you want to measure, the smaller the value has to be.
How to make a Motherboard - A GIGABYTE Factory Tour Video  - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: November 12, 2010, 02:18:41 am
content: That's not an advertise of the brand , watch and see the factory,they do have amazing tools .

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 12, 2010, 03:30:48 am
content: so... thats how Gigabyte do it.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: November 12, 2010, 12:21:08 pm
content: Yep as in all modern electronics , with the use of robotics they do the 95% of the process.And I bet that the same happens too , with multimeter's - mobile phones and everything fresh made.The bottom line are , that in this modern way of making things , all the responsibility about construction quality , falls over the solders of the companies who build those automation's.And actually the modern Electronics engineers , do the primary plan of what they need, and the machines do the execution.In order to be 100% honest I would say that at this point, that the responsibility for an healthy product its 50/50 ( theoretical planing / assembly ) .And what gets from the above tail , are that if some one looks for an work in a such facility he must be specialized to service such systems .

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: November 12, 2010, 09:49:48 pm
content: Well if some one had find as interesting, the above videos, he will find also interesting and those !!And a bit of MATRIX

author: GeoffS
author_rank: Unknown
timestamp: November 12, 2010, 11:37:23 pm
content: Read like an advertisement for Gigabyte[All my PC's have Gigabyte motherboards]

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: November 13, 2010, 06:14:01 am
content: I have past all the illness like brand names ... started with SOYO -> ABIT -> ASUS -> GIGABYTE.But I will help about the advertisement part ..By offering some pictures from the " Electronica 2010 " ( Germany )I love technology , no matter where it comes fromhttp://electronica.de/en/home.
Rigol DS1052D oscilloscope with logic analyzer - Page 1
Forum section: electronics / general

author: equack
author_rank: Newbie
timestamp: November 13, 2010, 12:12:23 am
content: I just received a Rigol DS1052D (the version with a 16 channel logic analyzer).I bought it from Saelig in the USA because I could not find a distributor here in Canada.Saelig's price was no better than anyone else's but they include a free carrying caseand they have been in business for a number of years so I was comfortable ordering from them.The scope came with firmware version 2.04 SP1.The logic analyzer pod connects to the front panel with a generous 30 inch ribbon cable.The analyzer clips are small enough to attach to an SOIC chip without shorting adjacent pinsbut they are too large for an SSOP package. I had a little difficulty attaching a clip toan SOT-23 transistor but it can be done. (You can always solder a 30AWG whisker onto the trace you're interested inand then clip the probe to the whisker.)I attached the scope to my PC via USB. Windows 7 reports that it has no driver. It shows up in device manageras "DS1000 SERIES".I installed the Ultrascope software. The install script was in Chinese and corrupted text but I was able to getit to install under Windows 7. When I launch the program I get runtime error '53', missing VISA32.DLL.I am going to install National Instruments LabView (I have the Student Edition) and see if it contains the missing VISA32.DLL.

author: Hypernova
author_rank: Unknown
timestamp: November 13, 2010, 12:34:54 am
content: 30 inch?! Are you sure?

author: Psi
author_rank: Super Contributor
timestamp: November 13, 2010, 01:19:51 am
content: my win7 pc has that file, so it is a dll that can be installed into win7. Not a vista only dll or anythingI seem to remember there being a two part process to get the software for my rigol running (1052E)The ultrascope software and some other NI driver package or something, but they were both on the CD that came with it.Maybe you should try download a fresh copy of the driver for your scope.The cd may have been damaged and not installed both parts of the driver properly.
Misc exciting, thought provoking comments etc etc etc - Page 1
Forum section: electronics / general

author: musicant
author_rank: Newbie
timestamp: November 10, 2010, 03:39:40 pm
content: Frig Dave, every time I'm on the road, I end up cursing drivers who are too stupid or distracted to drive safely. And there you are, recording a rant while driving! Real good. I hope your camera survives the accident so we can see whom you've run into. Come on...Is Digikey becoming a jerk? They sent me some wrong parts in my last order - a few dollars worth of inductors. In the olden days, they would have told me to keep them. This time, they wasted my time, making me send them back. What the...?!!??!What's with the lack of detail in your vidcasts?? This is supposed to be a techie blog, right? Please...more details. Ask questions, don't just go "ooh ahh sex-on-a-stick" all the time. A couple incidents spring to mind: Your visit to that giant surplus store - give us some REAL info - prices, condition, etc (BTW, aren't scopes "test equipment"? You kept looking for test equipment while surround by Tek scopes. Kinda funny.) Another example - that "x-ray" camera thingy to see through walls at the Renesas event (I think). Very cool, but, you just drooled on it. ASK SOME QUESTIONS!!! How does it work?Merch eh!? :-) Like your designs. Especially the FSM/FSM shirt. Funny how so many engineers are conservative/religious nutbar types. What the hell's the story with that!???Best regards,Michaelwww.cantares.on.ca
Where is EEVBlog #120?? - Page 1
Forum section: electronics / general

author: qno
author_rank: Frequent Contributor
timestamp: November 05, 2010, 06:14:54 pm
content: Hi Dave,During your vacation you forgot to post EEVblog#120.....Or are you still working on that?

author: baljemmett
author_rank: Unknown
timestamp: November 05, 2010, 08:24:09 pm
content: Quote from: qno on November 05, 2010, 06:14:54 pmIt'son the site-- note that #119 went up after #120 so they're out of order!
Jaycar thevenin in silicon chip magazine, can someone send me a copy - Page 1
Forum section: electronics / general

author: Simon
author_rank: Unknown
timestamp: November 03, 2010, 08:16:30 pm
content: Hi guys, few years ago I bought Jaycars thevenin kit and put it together, I managed to screw things up and not having a scope at the time could not retune it. Well now i have a scope but do not have the instructions/silicon chip article 143. can anyone help ? the kit number is: EC7944 / KC5295

author: DJPhil
author_rank: Frequent Contributor
timestamp: November 04, 2010, 02:40:03 am
content: The guys at Theremin World havea page with some info on some mods they've done, and it includes the schematic. Depending on your problem, it might be better instructions than stock.Maybe this will help?

author: Simon
author_rank: Unknown
timestamp: November 04, 2010, 07:52:18 am
content: Thanks, I'll look into that, basically the original instructions told you how to tune the circuit from scratch, it gave set frequencies for set points, i need to get that right first

author: the_raptor
author_rank: Regular Contributor
timestamp: November 05, 2010, 02:16:04 pm
content: Thanks for that guys, I have been looking for a cheap local Theremin kit (looking for one was what got back into electronics recently).

author: Simon
author_rank: Unknown
timestamp: November 05, 2010, 04:52:49 pm
content: yea it's a fairly simple kit and is complete, unfortunately I screwed mine up. if you do get one I'd be grateful if you scan the setup section of the instructions and email the to meSimon
OT: Alcatraz video - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: November 10, 2010, 11:16:27 am
content: Someone asked some time back to see my video of the special tour I got under Alcatraz prison a few years back.I found the footage and have uploaded.It's crap quality, but you still get the gist of it.The area is now completely closed and may not ever reopen.Dave.
Bell System Technical Journal - Page 1
Forum section: electronics / general

author: DJPhil
author_rank: Frequent Contributor
timestamp: November 02, 2010, 03:34:21 pm
content: Found this gemon reddit and figured you guys might like it. Contained here are the archives of the entire run of the Bell System Technical Journal, from 1922 to 1983. There are some really historic articles in here, and it makes for great lunchtime reading.

author: Mechatrommer
author_rank: Super Contributor
timestamp: November 02, 2010, 04:59:50 pm
content: bookmarked, thanx.

author: JohnS_AZ
author_rank: Frequent Contributor
timestamp: November 02, 2010, 07:17:00 pm
content: Wow, very cool. Thanks for the lead.

author: Polossatik
author_rank: Frequent Contributor
timestamp: November 02, 2010, 07:59:31 pm
content: Quote from: shafri on November 02, 2010, 04:59:50 pm+1lovely! thank you!
What else to buy from digikey? - Page 1
Forum section: electronics / general

author: cksa
author_rank: Regular Contributor
timestamp: October 31, 2010, 10:16:28 pm
content: I am putting through a digikey order soon (shipping to Australia). Was wondering if anyone knows what's cheap (relative to say purchasing from Farnell AU) to get at digikey while im at it (since shipping is $30 us)?

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 31, 2010, 10:36:34 pm
content: Before committing to ordering from DK, check pricing at Mouser - on recent orders I've usually found them cheaper.

author: GeoffS
author_rank: Unknown
timestamp: November 01, 2010, 03:15:06 am
content: Quote from: mikeselectricstuff on October 31, 2010, 10:36:34 pmMouser charge $39 for shipping to Australia unless your order is over $200 in which case shipping is free.

author: sonicj
author_rank: Frequent Contributor
timestamp: November 01, 2010, 07:14:59 am
content: swiss cheese

author: sonicj
author_rank: Frequent Contributor
timestamp: November 01, 2010, 07:23:57 am
content: solder wickrohssolderflux penreally bright ledthats all i've got for now...-sj

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: November 01, 2010, 09:37:08 am
content: Quote from: GeoffS on November 01, 2010, 03:15:06 amA year or so ago they matched Digikey's free UK shipping for orders over GBP50 - maybe if enough Aussies emailed them to say they are losing busoness to DK they may do the same for Down Under...
Need some advice on a quick and easy mic pre amp - Page 1
Forum section: electronics / general

author: chandin
author_rank: Contributor
timestamp: November 02, 2010, 10:37:22 am
content: So i have 6 condenser microphones.And i need to design 6 individual pre amps for them.What i want to do is to get the audio signal from the mics into some ADC chips for some audio processing.I really cant be bothered putting much effort into the actual preamps. So I am looking for a self contained chip that will do the jobI looked around and found thishttp://www.analog.com/static/imported-files/data_sheets/SSM2019.pdfSo if i connect a condenser mic to this and then connect the output from this to an ADC would the ADC be able to read that?The end result is I want to do some DSP on the data coming in from the ADCs to identify the frequencies of the notes being played in a guitar.(Each string has a microphone underneath it).So as you can see most of the work is in the DSP, so Im looking for a quick solution for the analog end.

author: scrat
author_rank: Frequent Contributor
timestamp: November 02, 2010, 03:58:51 pm
content: I'm not an expert of audio, but since I see no replies, I'll post mine.I think this IC is much more than you really need. An issue could be the fact it needs dual power supply. Usually, ADCs accept positive only inputs, so you'll need another conditioning stage (passive, at least).A single supply opamp IC with a good bandwidth (desired gain*20kHz) would do the job without the need for a negative supply.BTW: which type of microphone are the ones you use? Electret?

author: qno
author_rank: Frequent Contributor
timestamp: November 02, 2010, 06:36:51 pm
content: the chip is to complicated.Use a 1 or two stage inverting opamp amplifier.What is the range of the ADC?The microphone signal will be in the mV range. To get it to the volts range you need a gain of 1000.Watch out for distortion. The dynamic range is very high. You may need some automatic gain aka Compressor.Then it also will be difficult to distiguis between the 6 strings because the sound is not only the string but also ge case of the guitar.
Newark (Farnell) Down? - Page 1
Forum section: electronics / general

author: AcHmed99
author_rank: Contributor
timestamp: October 31, 2010, 08:21:17 pm
content: A

author: orbiter
author_rank: Frequent Contributor
timestamp: October 31, 2010, 08:43:09 pm
content: It's showing up for me here in the UK

author: slburris
author_rank: Frequent Contributor
timestamp: October 31, 2010, 09:12:19 pm
content: Works for me in the US.Scott

author: baljemmett
author_rank: Unknown
timestamp: October 31, 2010, 10:26:09 pm
content: Quote from: AcHmed99 on October 31, 2010, 10:22:16 pmFarnell's working here but Newark's a Notwork Solutions landing page. Guess someone forgot to pay a registrar bill...

author: orbiter
author_rank: Frequent Contributor
timestamp: October 31, 2010, 11:22:32 pm
content: I meant that when I click on the link you gave us, I get the site showing up just fine...

author: baljemmett
author_rank: Unknown
timestamp: November 01, 2010, 12:14:13 am
content: Quote from: AcHmed99 on October 31, 2010, 11:41:00 pmIt looks like some DNS weirdness -- it started working for me when I saw the message about it working for someone else, and now it's giving the landing page again. Perhaps some of NetSol's servers are out of sync or something, so some requests for the NS records for newark.com hit a valid zone and some come back empty-handed / hijacked by the bloody marketing department.

author: migsantiago
author_rank: Frequent Contributor
timestamp: November 01, 2010, 03:30:02 am
content: Yeah, Newark was dead for a while. Even the mexican site was dead...http://mexico.newark.comNow everything is back to normal.

author: Zad
author_rank: Super Contributor
timestamp: November 01, 2010, 04:49:38 am
content: And now it is the turn ofhttp://uk.farnell.com/to display a blank screen. I guess they are upgrading servers.

author: .o:0|O|0:o.
author_rank: Regular Contributor
timestamp: November 01, 2010, 06:02:00 am
content: Quote from: Zad on November 01, 2010, 04:49:38 amI got that a short while ago. I know some sites don't like idle connections and take precautionary measures like blocking you out for 15 minutes; they seem to confuse ordinary activity with DoS style attacks, from what I gather. I wasn't sure if this was the case with Farnell. They seem to do maintenance work aound midnight in the UK..o:0|O|0:o.
Dave is on TV! - Page 1
Forum section: electronics / general

author: reagle
author_rank: Unknown
timestamp: October 31, 2010, 04:13:24 pm
content: At least on mineWe use Roku streaming box to watch things like Netflix, and they recently added a third party Youtube channel. Now I can watch EEVblog on my TV. Happiness

author: EEVblog
author_rank: Unknown
timestamp: October 31, 2010, 08:39:49 pm
content: Quote from: reagle on October 31, 2010, 04:13:24 pmBe afraid, be vary afraid!Dave.

author: slburris
author_rank: Frequent Contributor
timestamp: October 31, 2010, 09:14:40 pm
content: Quote from: reagle on October 31, 2010, 04:13:24 pmI use an Apple TV to project Dave onto a 90 inch screen with a projector for maximumDaveness! :-)Scott

author: dimlow
author_rank: Frequent Contributor
timestamp: October 31, 2010, 09:26:11 pm
content: Man, i had him on my projector, about 90-100 inch, i have not seen the cat since.
AEMC Meters - Page 1
Forum section: electronics / general

author: paticumbia
author_rank: Newbie
timestamp: October 31, 2010, 04:33:51 pm
content: Has anyone heard of AEMC DMM's or Clamp on meters they even come with NIST certification when you order a DMM.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 31, 2010, 06:07:48 pm
content: If you have an specific model in mind , post an link.This brand its unknown to my region ( EU ) .

author: paticumbia
author_rank: Newbie
timestamp: October 31, 2010, 06:29:18 pm
content: website linkhttp://www.aemc.com/MX24B 5000-Count Digital MultimetersThe Model MX24B is an accurate TRMS digital Multimeter (DMM) designed for everyday electrical applications. The 5000-count display incorporates a 34-segment bargraph. The ergonomic design and balance make it very comfortable to hold and operate function seclections quickly and easily using the large rotary dial. All standard multimeter functions are available including volts, amps, frequency, ohms, continuity and diode checking plus a low impedance AC volt mode useful in eliminating ghosting. The Model MX24B is safety rated to EN 61010, 600V Cat. III.

author: cybergibbons
author_rank: Frequent Contributor
timestamp: October 31, 2010, 07:09:12 pm
content: First thought - I had a cheap meter with the buttons right above the input sockets, ruined the ergonomics. It fell in the sea anyway.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 31, 2010, 07:27:07 pm
content: Hmm interesting find .... the GAUVIN ARNOUX from France , invades in the American market ,with the Brand name AEMC ..Well the GAUVIN ARNOUX AC/DC clamps are equal and a bit better than Fluke ones = they do have the knowledge to build anything.Their entrance as AEMC at the American market, its a new risk for them.The GAUVIN ARNOUX its an trusted company 100% in Europe .If the new American partners , act with professionalism , it will get an good market share in no time.

author: paticumbia
author_rank: Newbie
timestamp: October 31, 2010, 07:44:24 pm
content: I really like the easy access to fuses and battery without having to open the whole case.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 31, 2010, 07:54:01 pm
content: Well this site has lots of PDF to download, and check any details you like ..Hey ... I found my own clamp that I got from France , and an fresh PDF with the product specs..http://www.aemc.com/products/pdf/1200.72.pdfNow I need to find the pricing , so to find out how the pricing works at this end.The European model called asPAC12AC-DC ..And here is my " quick test " of it .https://www.eevblog.com/forum/index.php?topic=660.0.
Need help from Chinese reader - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: October 30, 2010, 09:31:26 pm
content: Can somebody tell me if this is a transmitter or receiver ?http://www.jinjubao.com/j04p.htmThanks.

author: PsI-On
author_rank: Contributor
timestamp: October 30, 2010, 09:53:50 pm
content: It's a recieverhttp://translate.google.com/translate?u=http%3A//www.jinjubao.com/j04p.htm&hl=en&langpair=auto|en&tbb=1&ie=GB2312

author: DavidDLC
author_rank: Frequent Contributor
timestamp: October 30, 2010, 10:07:55 pm
content: Wow, thanks a lot.I will start using Google translator

author: sonicj
author_rank: Frequent Contributor
timestamp: October 31, 2010, 10:06:15 am
content: there is alsobabel fish.
A new wireless power development kit. - Page 1
Forum section: electronics / general

author: DavidDLC
author_rank: Frequent Contributor
timestamp: October 27, 2010, 05:17:14 pm
content: Interesting kit, but way out of my pocket just for something to play with:http://www.engadget.com/2010/10/27/powercast-and-microchip-fire-up-interest-at-a-distance-with-wire/

author: DJPhil
author_rank: Frequent Contributor
timestamp: October 27, 2010, 07:42:22 pm
content: Quote from: Incredibly Insane Marketing Dept.I can't make any sense of that at all. I'm guessing the bulk of that is the Powercast module?

author: quirmche
author_rank: Contributor
timestamp: October 28, 2010, 04:07:02 pm
content: Quote from: DJPhil on October 27, 2010, 07:42:22 pmDon't feel bad, neither can I.They call this a sentence!?!?!?QuoteI guess the guys at Engadget, in particular Sean Hollister, are spending too much time thinking in binary that they have a hard time converting back to the spoken lanaguage!
Component designators, polarity markings, abbreviations etc - Page 1
Forum section: electronics / general

author: RayJones
author_rank: Frequent Contributor
timestamp: July 31, 2010, 11:39:42 pm
content: Just found this on S.E.D.http://www.dynamixtechnology.com/docs/ipc-drm-18fs.pdfWas useful to me, no doubt others

author: marianoapp
author_rank: Regular Contributor
timestamp: August 01, 2010, 05:23:11 am
content: nice..this is the updated versionhttp://ipctraining.org/demos/pdf/drm18h.pdf(has better resolution images)

author: RayJones
author_rank: Frequent Contributor
timestamp: August 01, 2010, 05:35:04 am
content: VERY NICE.One can manage to look through that nasty big red DEMO text, thanks for posting a cleaner image version :-)

author: DJPhil
author_rank: Frequent Contributor
timestamp: August 01, 2010, 05:39:07 am
content: I love the IPC, they taught me how to improve my soldering from the wreckage I was putting out before.Their site is a pain to navigate, but with sufficient poking around you can findtheir huge collection of soldering videos. There are 'demo only' warnings in the video, but they aren't very bothersome compared to the printed material.

author: Zero999
author_rank: Super Contributor
timestamp: October 29, 2010, 09:28:58 pm
content: I went through and removed the nasty red text but Inkscape messed with the text spacing a little and the file is larger, probably due to the hgiher DPI setting and me not wanting to make the JPEG images even worse.
Monotron Schematic  - Page 1
Forum section: electronics / general

author: EddieB
author_rank: Contributor
timestamp: November 10, 2010, 07:00:37 pm
content: Hi Guys,Don't know if this forum allows posting stuff like this, but thought general chat was an appropriate place to put it..The guys at Korg released the schematics for their Monotron Synth. Found it on Hackaday for those of you who don't read it the links here :http://hackaday.com/2010/11/10/monotron-openly-monophonic/Looks like a fun build and interesting schematic for those new to sound generating circuitsCheersEdit: Schematic link -http://www.korg.co.jp/Support/Manual/download.php?id=512
Vintage Test Equipment on the Wiki - Page 1
Forum section: electronics / general

author: JohnS_AZ
author_rank: Frequent Contributor
timestamp: October 27, 2010, 11:03:59 pm
content: I created a new section on the wiki that list older/vintage equipment that has been "reviewed, dissected, and discussed" here on the forum. I did a fair amount of searching but am fairly certain that I haven't found them all. If you posted something here that would apply, or remember something that does, you can let me know and I'll add it, or you could even go add it yourself. The items I found:------------------------------------------------------------FlukeFluke 8842A Bench DMMFluke 8040A Portable DMMFluke 510A AC reference standardHeathkitHeathkit Analog Tube Oscilloscope Model HO-10TektronixTektronix 2445, 150Mhz Analog ScopeTriplettTriplett 630-NA Analog MeterTriplett 630-NA Analog Meter------------------------------------------------------------You can see the wiki athttp://www.eevblog.com/wiki/index.php?title=Manufacturers#Vintage_Test_Equipment
STM32 Design Contest - Free KIT - Page 1
Forum section: electronics / general

author: ElektroQuark
author_rank: Unknown
timestamp: November 05, 2010, 02:27:39 pm
content: Info and register data:http://www.ebv.com/en/products/stm32-design-contest.html?sn=20101104&ltype=more&uid=9544The prices include a Harley Davidson

author: Hypernova
author_rank: Unknown
timestamp: November 05, 2010, 02:45:38 pm
content: QuoteGuess that's that for those of us down under.The kit they are giving away aren't expensive anyway so we can always buy them ourselves, although if I do get my mbed I don't think I'll be playing with another ARM anytime soon."STM32 Discovery Kit"around 12'ish USD most places tops.http://search.digikey.com/scripts/DkSearch/dksus.dll?WT.z_cid=ref_findchips_dkc_buynow&site=us&lang=en&keywords=497-10633-ND

author: ElektroQuark
author_rank: Unknown
timestamp: November 05, 2010, 03:01:48 pm
content: And the Harley?
Protek 608 - Page 1
Forum section: electronics / general

author: paticumbia
author_rank: Newbie
timestamp: October 26, 2010, 11:20:27 pm
content: I think after reading all the specs i might be sold on this meter. Any opinions on Protek and this version of digital multimeter as far as quality and dependabilty?

author: jmcf1949
author_rank: Newbie
timestamp: October 27, 2010, 12:55:03 am
content: I've had one of these for a couple of months now. Got it to replace my twenty-five year old Simpson 260. I'm certainly no expert but it seems to be made decently, and when I get a voltage reference, I'll know a bit more about how accurate it is. I can't use the data logging feature until I upgrade my computer so I don't know about that yet. It doesn't feel like some of the cheap meters I've held. But it doesn't feel like a Fluke 87V either. I wish it would have come with alligator clips because I'm looking to get some, but so far no luck. I even sent an e-mail to Protek but got no response. I guess when you buy stuff made in China, that's what you can expect. I hope this helps with your decision.Regards,Jim - Semper Fi
Easily accessible terminal blocks for stacked boards? - Page 1
Forum section: electronics / general

author: allanw
author_rank: Frequent Contributor
timestamp: October 25, 2010, 08:13:40 am
content: I'd like to stack a bunch of boards with terminal blocks on the edges of each of them. With regular terminal blocks, the screw terminal is inaccessible once you stack the boards, which would be quite annoying.What's something that works like a terminal block except lets you adjust the tightness on the edge as well?

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 25, 2010, 08:34:56 am
content: You can get vertical entry terminal blocks with the screw on the same face as teh wire entry, as well as 45 deg ones. Another option is a pluggable terminal block. Take a look at products from from Phoenix, Camdenboss, Weidmuller etc. and you'll find something suitable.

author: allanw
author_rank: Frequent Contributor
timestamp: October 25, 2010, 10:08:28 am
content: But those are all vertical and 45 degree isn't optimal either, because the boards stack with only 10mm of spacing in between them.

author: baljemmett
author_rank: Unknown
timestamp: October 25, 2010, 01:09:14 pm
content: Quote from: allanw on October 25, 2010, 08:13:40 amDo you need to have an adjustment or would something like theseleverless clamp connectorsdo? I've used the versions with levers -- they grip the wire well, but the lever would be tricky to reach in your situation (and sticks up too far as well I guess!)

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: October 25, 2010, 01:52:58 pm
content: Pluggable terminal blocksAre probably the best bet. Easier for maintainance as well.

author: joelby
author_rank: Frequent Contributor
timestamp: October 25, 2010, 11:34:09 pm
content: Something likehttp://dkc1.digikey.com/us/en/ph/Weidmuller/LSF-SMT.html?
Alaska electrical engineering - Page 1
Forum section: electronics / general

author: KTP
author_rank: Frequent Contributor
timestamp: October 24, 2010, 11:11:15 pm
content: I am curious if any of you have electrical engineering jobs in Alaska and if so, how do you like living there?I am toying with the idea of moving there in a few years but would like to at least work part time doing someform of electrical engineering...maybe something for the oil industry?

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: October 24, 2010, 11:22:02 pm
content: Well if you are interested for a Job up there , start learning the Russian language,and then make an contact with them, its their territory.But if the ice melt really fast , it will be called as sea , and it will belong to the fishes .

author: Time
author_rank: Frequent Contributor
timestamp: October 25, 2010, 12:02:57 am
content: I think there is a regular poster here that is from Alaska. A female... thundermouse or something - I forget.

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 25, 2010, 12:52:54 am
content: Quote from: Kiriakos-GR on October 24, 2010, 11:22:02 pmlearn to fish, marry the girl and produce some nice Alaskan kiddies

author: scrat
author_rank: Frequent Contributor
timestamp: October 25, 2010, 09:04:22 am
content: Quote from: Time on October 25, 2010, 12:02:57 amShe is ThunderSqueak.

author: Rhythmtech
author_rank: Regular Contributor
timestamp: October 25, 2010, 05:12:12 pm
content: Quote from: Kiriakos-GR on October 24, 2010, 11:22:02 pmI am pretty sure learning Russian will help little in Alaska, learning Inuit or Eskimo on the other hand would probably come in very handy since it was theirs before the Russians...
My wife saw this and thought of me... - Page 1
Forum section: electronics / general

author: kd5jha
author_rank: Contributor
timestamp: October 20, 2010, 03:09:11 am
content: http://xkcd.com/730/I thought it was rather amusing !RMG

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 20, 2010, 04:15:09 am
content: me too!https://www.eevblog.com/forum/index.php?topic=426.0https://www.eevblog.com/forum/index.php?topic=778.0

author: JohnS_AZ
author_rank: Frequent Contributor
timestamp: October 20, 2010, 04:34:49 am
content: This has always been my favorite geek humor image...

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 20, 2010, 03:13:24 pm
content: Quote from: JohnS_AZ on October 20, 2010, 04:34:49 amLONSL(Laugh Out Not So Loud!)From the day i landed in EE field, one thing interests me until now is why they call most of connectors as "female-male" pair. but i guess thats the easiest word to remember which female and which is male, even for a new first to be seen connector type

author: NiHaoMike
author_rank: Super Contributor
timestamp: October 21, 2010, 02:54:28 am
content: Quote from: JohnS_AZ on October 20, 2010, 04:34:49 amI think that's more like the difference between Mac and Gentoo!

author: Zero999
author_rank: Super Contributor
timestamp: October 21, 2010, 08:31:36 am
content: Which is Mac and which is Gentoo?Is Tux male or female.

author: DJPhil
author_rank: Frequent Contributor
timestamp: October 21, 2010, 10:56:00 am
content: Quote from: JohnS_AZ on October 20, 2010, 04:34:49 amEvery time I see that one I think, "Hey, at least that one has indicator markings, even if they are dimensionless numbers!"As for linux, I just (last week or so) hopped over for the third time, probably completely. I think were ready for each other finally. Ubuntu feels more like an analog scope. There's a few options I struggle with, and I'll probably never understand it completely, but I can get so much more done than I used to with that overpriced soundcard scope I used to use.
Hakko USA replacing the 900M tips used by the 936 etc. - Page 1
Forum section: electronics / general

author: kaptain_zero
author_rank: Regular Contributor
timestamp: October 20, 2010, 03:18:22 am
content: Just got an email from Hakko USA today, the 900M tips are being replaced by the T18 tips in February. More can be readat hakkousa.RegardsChristian

author: saturation
author_rank: Super Contributor
timestamp: October 20, 2010, 11:08:53 am
content: Thanks a ton. Hakko rocks, and those tips look much like the original, I hope they do perform better, why improve what works?Quote from: kaptain_zero on October 20, 2010, 03:18:22 am

author: DJPhil
author_rank: Frequent Contributor
timestamp: October 20, 2010, 11:43:54 am
content: Sweet!Best news I've heard all day, thanks for the heads up.
Operational transconductancd amplefier - Page 1
Forum section: electronics / general

author: lesserwords
author_rank: Newbie
timestamp: October 26, 2010, 09:33:12 pm
content: I need some more info on the (OTA) if you know a good guide for it online let me know. Also i need a good characteristic page for the chip.

author: blackdog
author_rank: Frequent Contributor
timestamp: October 27, 2010, 06:40:34 am
content: Hi,Try these links...http://users.ece.gatech.edu/~lanterma/studentprojects/TeamOTAComparison.pdfhttp://cache.national.com/ds/LM/LM13700.pdfhttp://www.intersil.com/data/an/an6077.pdfhttp://users.ece.gatech.edu/~lanterma/sdiy/datasheets/ota/ca3280.pdfhttp://focus.ti.com/lit/ds/symlink/opa861.pdfhttp://www.idea2ic.com/LM13600/UsingOTAs2.pdfHappy reading ;-)Bram