hybridfree/eevblog-posts huggingface dataset:
Instek GDS-1102A firmware - Page 1
Forum section: electronics / general

author: Slobodan
author_rank: Regular Contributor
timestamp: September 25, 2011, 01:15:12 pm
content: I own an GW Instek GDS-1102Aoscilloscope. The firmware version instaled is 1.12, but the manual is for the 1.5 version. So, firmware instaled on my scope is very old and i would like to update it, but there is no firmware available for download on the Instek site.http://www.gwinstek.com/en/download/downloadfilelist.aspx?id=42All i have found is firmware v1.21 but for the GDS-1102 model.http://www.instek.ca/firmware.phpIs this mean that i can't update the firmware for my model?

author: Bored@Work
author_rank: Super Contributor
timestamp: September 25, 2011, 03:34:53 pm
content: Quote from: Slobodan on September 25, 2011, 01:15:12 pmNo, it is 7 minor versions newer than your manual.QuoteYou would have to downgrade to have the same version as the manual.QuoteThis is normal for Instek. The Canadian site is an exception, but it is not well maintained. Maybe it is run by someone else (a distributor?).QuoteDo not install GDS-1102 firmware on a GDS-1102A. They are different.If you want GDS-1102A firmware you have to beg Instek to give it to you. Look for the after-sales service contacts on the Instek website. Be prepared to be pestered with a registration request and questions about your distributor and serial number. If they don't like the answers they might not send firmware.

author: Slobodan
author_rank: Regular Contributor
timestamp: September 25, 2011, 04:28:33 pm
content: Thanks. I see now, If it said v1.50it would be different, wright?

author: Freighternut
author_rank: Regular Contributor
timestamp: September 25, 2011, 10:53:13 pm
content: I have a GDS-3154 and the dealer that supplied the scope to me is happy provide the Firmware updates. I justoccasionally ask him to check if there are any new update and he sends them to me if new ones are available.

author: Slobodan
author_rank: Regular Contributor
timestamp: September 26, 2011, 08:40:33 am
content: Quote from: Freighternut on September 25, 2011, 10:53:13 pmI have contacted them yesterday and they have replied my today:Quote
Fluke 95 Oscilloscope Sampling  - Page 1
Forum section: electronics / general

author: Tony R
author_rank: Regular Contributor
timestamp: September 25, 2011, 02:22:59 pm
content: So i was browsing the pages of ebay and i found an add that got me a little confused and hope some of you guys can help clear it up for meI found a Fluke 95 50 Mhz hand held scopemeter. in the add it stated "*** 50 Mhz Dual Channel *** 25 Megasamples/second ***"Now when taking signals and systems i was always told that your sampling frequency must be at least twice the frequency of the signal you want to sample so fs>= 2*f.So if this is sampling 25 million times a second, how can it be rated for 50 MHz waves?

author: Zero999
author_rank: Super Contributor
timestamp: September 25, 2011, 02:32:16 pm
content: It'd possible to have a higher analogue bandwidth than double the sample rate for repetitive waveforms.

author: Unknown
author_rank: Unknown
timestamp: September 25, 2011, 02:35:34 pm
content: Ahh, used to have that one!Sure, look up equivalent time sampling. Here is a dcent app note:http://www2.tek.com/cmswpt/tidetails.lotr?ct=TI&cs=Application+Note&ci=14295&lc=EN

author: saturation
author_rank: Super Contributor
timestamp: September 26, 2011, 10:51:12 am
content: 2x is minimum, realistically its 10x. So that scope is effectively 2.5 MHz worse case, in single shot applications.
Don your hard Hats for September - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: September 12, 2011, 05:04:12 am
content: Better to be safe than sorry, you wouldn't want to be slapped in the back of the head by six and a half tons of space junk.http://www.marketwatch.com/story/nasa-satellite-expected-to-plunge-to-earth-2011-09-09?link=MW_latest_newsWould be something of an ironic coincidence, if America's space junk crashed into an Al-Qaeda facility on it's final reentry. What would be the odds?

author: bullet308
author_rank: Frequent Contributor
timestamp: September 12, 2011, 01:28:40 pm
content: I would call that "a good day at the office for NASA".

author: Unknown
author_rank: Unknown
timestamp: September 24, 2011, 02:37:41 pm
content: All safe it's crashed into Canada. If Canada wants to earn a lazy $400 they could fine NASA for littering, like they did in Esperance. Only took 30 years to get paid.

author: Bored@Work
author_rank: Super Contributor
timestamp: September 24, 2011, 03:16:56 pm
content: Quote from: Uncle Vernon on September 24, 2011, 02:37:41 pmNo one should be above the law, not even NASA.

author: MrPlacid
author_rank: Frequent Contributor
timestamp: September 25, 2011, 03:51:43 am
content: Quote from: Uncle Vernon on September 24, 2011, 02:37:41 pmYou can charge interest until the amount is paid
TL081 - Nulling Input Offset Voltage - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: September 21, 2011, 01:35:32 pm
content: The circuit shown is copied from the datasheet of TI TL081. Say that a 25-turn 100kohm trimmer is used in the circuit. I wander why the nulling circuit needs a 1.5kohm resistor. Please advise.Let replace the 100kohm trimmer with a 25-turn 50kohm trimmer. Two extra resistors (each 27kohm) is connected to trimmer as shown below. Do you think this circuit modification will "ease" the nulling process (i.e. easier to achieve "zero" input offset voltage)?Cheers

author: rf-loop
author_rank: Super Contributor
timestamp: September 21, 2011, 02:14:58 pm
content: With your second picture (27+50+27k) you do not need 1.5k resistor.If use your first picture there maybe need be current reject becouse trimmer you can turn nearly zero resistace from center to trimmer ends. If there is nearly zero resistance you can look what may happend. Look TL081 inside schematics (if schematics are right?) what may happend if you connect offset comp terminal to negative supply without current reject for worst case situation in live circuit.http://www.ti.com/lit/ds/symlink/tl084.pdfIn your second picture these 27k resistors do this current rejection where ever is your trimmer center.National TL081 inside schematics is different.http://www.national.com/ds/TL/TL081.pdfSo who knows...But in practice of course TI example for offset comp was only for prameter test situation - it is not aplication example.

author: slateraptor
author_rank: Frequent Contributor
timestamp: September 24, 2011, 12:43:10 pm
content: Quote from: rf-loop on September 21, 2011, 02:14:58 pmAgreed.Quote from: onemilimeter on September 21, 2011, 01:35:32 pmAssuming pots arelinearly tapered, a 25-turn 100k pot yields approx 4k per revolution, whereas a 25-turn 50k pot yields approx 2k per revolution. So in theory, it should "ease" the nulling process by twofold...that is, assuming the sweet spot lies within the range of the pot.

author: BravoV
author_rank: Super Contributor
timestamp: September 24, 2011, 12:53:58 pm
content: Quote from: rf-loop on September 21, 2011, 02:14:58 pmZapped ?

author: slateraptor
author_rank: Frequent Contributor
timestamp: September 24, 2011, 01:12:53 pm
content: Quote from: BravoV on September 24, 2011, 12:53:58 pmhttp://www.ti.com/lit/ds/symlink/tl084.pdfPage 4. My analog analysis is quite rusty but it looks like it'll render one of the two 1080 ohm emitter resistors null (depending on how the pot is connected) which will effectively kill the gain at that particular stage...then snowball effect. *shrug*
Rant: Roving Networks RN-42-SM annoying design tidbit - Page 1
Forum section: electronics / general

author: slateraptor
author_rank: Frequent Contributor
timestamp: September 24, 2011, 11:24:21 am
content: Sells for $39 USD on DigiKey, which is a sexy price for what you get. I picked one up a few weeks ago knowing that I needed Bluetooth for a prototype that I'm working on. Looks like it'll work nicely since I was shooting for a stacked mezzanine design from the onset.So why am I so annoyed by this device? Mainly because complacency has made a sucker out of me.Note the 3 rows for breakout. "Oh, standard 100mil pitch," you might be thinking.6-pin 100mil pitch header...ok.Two 12-pin (presumably) 2mm pitch header...w.t.f. mate.I mean really...what genius thought it was a good idea to use two different header pitches on the same small breakout board?!?! And I say presumably because page 8 of the device's datasheet (http://rovingnetworks.com/Docs/Bluetooth-RN-41-SM-DS.pdf) specifies a non-standard 0.080" pitch (yes, to 3 decimal places) as opposed to 2mm ~= 0.079".In other words, the PCB layout engineer who designed this board ought to be fired with a quickness...after he designs a proper rev2, that is. Just sayin'...

author: slateraptor
author_rank: Frequent Contributor
timestamp: September 24, 2011, 04:59:51 pm
content: P.S. Spent a few hours on Samtec's website trying pair up low-profile header/socket sets for both 2mm and 100mil. ~$30 USD shipped for 5 modules worth later...these are the part numbers I ordered just in case anyone's interested:TMS-112-01-T-S- 12-pin 2mm through-hole male headerMMS-112-01-T-SV- 12-pin 2mm through-hole female socketNominal 2mm mated clearance = 234milTLW-106-05-T-S- 6-pin 100mil through-hole male headerSLW-106-01-T-S- 6-pin 100mil through-hole female socketNominal 100mil mated clearance = 240milHopefully tolerances will even out the 6mil nominal difference.P.P.S. Really like Samtec's part numbering system...probably because datasheets are top shelf.P.P.P.S. All this header/socket nonsense serves as strong motivation to design my own breakout board.
BUSTED! - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: September 23, 2011, 11:39:17 pm
content: Dave.

author: SiBurning
author_rank: Contributor
timestamp: September 24, 2011, 12:12:29 am
content: ... and she cooks, too

author: dimlow
author_rank: Frequent Contributor
timestamp: September 24, 2011, 09:17:32 am
content: Quote from: SiBurning on September 24, 2011, 12:12:29 amThat's how I fold my T-shirts, so fast!
Please help to identify these parts on a 16-bit ADC board - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: September 28, 2011, 11:30:58 pm
content: Please help to identify the parts shown in the image attached below. I guess Part-D is a resistor, which is in light blue color, is it a special type of resistor?Cheers.

author: amspire
author_rank: Super Contributor
timestamp: September 29, 2011, 02:31:37 am
content: Part B is probably a dual Philips BC847 NPN transistor. The center pins are the bases. The next pin clockwise from a base is the emitter, and the pin on the opposite side to the emitter is the collector.Part C is probably a dual diode - Possible either a dual BAS40-04 or a dual BAT54SW schottky diode.Part D looks like a 1.4K resistor. Don't know what the blue color means. Unless someone can recognise the manufacturer, it will probably be hard to work out things like tolerance.Part A? A Texas instruments TL085 opamp JFET opamp is my best guess. Looks right.Richard
Birthday present arrived on time - PCB-BOX - Page 1
Forum section: electronics / general

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: September 22, 2011, 05:48:45 pm
content: Just unloaded it from truck few minuttes ago into my office three days before birthday. Full review in about 2 weeks after serious lab construction work is finished.The machine is pure geek porn...Photos are from mobile so excuse the quality.

author: Joshua
author_rank: Regular Contributor
timestamp: September 23, 2011, 03:14:33 am
content: I'm sorry, I don't know what that is? (Note: I am a newb so...)

author: david77
author_rank: Frequent Contributor
timestamp: September 23, 2011, 06:39:26 am
content: I'd guess it's a small CNC mill.I remember reading about that manufacturer in an article in Elektor a few years ago, they developed a small relatively cheap CNC mill specially for hobby electronics together.

author: nzo
author_rank: Regular Contributor
timestamp: September 23, 2011, 08:19:44 am
content: Wow! Looking forward to your review

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: September 23, 2011, 10:04:57 am
content: Quote from: david77 on September 23, 2011, 06:39:26 amHello you are righthttp://www.colinbus.com/en/pcbprototyper.htmlThere is an ELEKTOR version too which is just a rebrand and its better to go with ColinBus.I will post some better photos tomorrow.

author: Time
author_rank: Frequent Contributor
timestamp: September 23, 2011, 07:20:22 pm
content: how much was it?

author: GeoffS
author_rank: Unknown
timestamp: September 23, 2011, 08:50:29 pm
content: Quote from: Time on September 23, 2011, 07:20:22 pmList price in the link given is 3500 euros!I recently bought a CNC router that has more than 4 times the working area at less than half that price. The specs for repeatability and resolution for the colinbus unit are far better than for mine though.Also looking forward to a review.
Reality Attacks Solar Industry - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: September 23, 2011, 11:23:06 pm
content: Greetings EEVBees:--The Solyndra company has closed its doors, having actually produced almost nothing, with the 535 million dollars the US government gave it. This is queering the deal for the rest of the Solarians. That is not how you are supposed to do it. You are supposed to at least actually produce and sell a product of some kind. Then the politicians and the media can sweep all the subsidies, taxes and sweetheart deals under the carpet and report that actually, Solar power is competitive. See link below.http://www.reuters.com/article/2011/09/23/us-solar-idUSTRE78M2WW20110923--Below is a link to a report on Shale Gas. How you get it, where it is, etc. I is a comprehensive report and, includes cost estimates for various energy sources, including renewables and fossil fuels (both with and without carbon sequestration). There is a foreword by Freeman Dyson.http://thegwpf.org/images/stories/gwpf-reports/Shale-Gas_4_May_11.pdf“I do believe that it's the first time in history that fire has ever melted steel." Rosie O'DonnellBest RegardsClear Ether
Selectronic DC to AC inverter, SE10-48, made in Australia. - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 20, 2011, 04:37:15 am
content: Australian made DC to AC inverter for electricity from wind mills and photovoltaic solar cells. It has a toroidal transformer.http://www.selectronic.com.au/inverter/manual/SE10-48.pdf

author: johnboxall
author_rank: Unknown
timestamp: September 20, 2011, 11:54:19 am
content: if you are interested in Australian electronics and technology, here is another one for youwww.4dsystems.com.au

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 22, 2011, 03:45:32 am
content: Thanks Tronixstuff, this is as fun as electronics lego and it is from Australia, too. Thanks. . .http://shop.4dsystems.com.au/poga-portable-gaming-console/289-poga.html

author: Precisiontools
author_rank: Regular Contributor
timestamp: September 22, 2011, 04:12:04 am
content: Selectronic hasn't made that inverter for a while...over 10 years is my guess.

author: johnboxall
author_rank: Unknown
timestamp: September 22, 2011, 04:16:12 am
content: Quote from: Lawsen on September 22, 2011, 03:45:32 amYes, I these are great - and excellent value for money. The IDE and programming language is easy to use. I gave some away earlier this year.http://tronixstuff.wordpress.com/?s=poga
Hydrogen From Waste - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: September 22, 2011, 02:16:29 am
content: Greetings EEVBees:--Would some one more knowledgeable than me, please have a look at the below article and give us an opinion."Science Daily (Sep. 19, 2011) — A grain of salt or two may be all that microbial electrolysis cells need to produce hydrogen from waste water or organic byproducts, without adding carbon dioxide to the atmosphere or using grid electricity, according to Penn State engineers." See link to full article below:http://www.sciencedaily.com/releases/2011/09/110919151317.htm"Marconi invented the radio but he had to wait years and years till anything decent was on." Johnny CarsonBest RegardsClear Ether
Rigol DS1052E firmware 2.05, can it be downgraded and hacked? - Page 1
Forum section: electronics / general

author: king.oslo
author_rank: Frequent Contributor
timestamp: September 21, 2011, 08:58:06 am
content: I thought I would buy a Rigol DS1052E and hack it to DS1102E.I asked the USA seller which firmware the unit has. The seller told me it has "firmware 2.05 without bug" (whatever that means). Can this firmware be downgraded to be hacked successfully?Which tools and steps would I take to do it?Thank you for your time.Kind regards,Marius

author: PeterG
author_rank: Frequent Contributor
timestamp: September 21, 2011, 09:31:55 am
content: https://www.eevblog.com/forum/index.php?topic=553.msg58174#msg58174Has everything you need to know.Regards
This is why i'm here - Page 1
Forum section: electronics / general

author: Chet T16
author_rank: Frequent Contributor
timestamp: September 20, 2011, 08:38:39 pm
content: I never did introduce myself anywhere but i just wanted to share how it is i've ended up here.All my life my family has been involved in cars - sales, repairs, tuning etc. etc. Cars were always my interest. Not even just fast cars, any cars regardless of how crap or slow they were. Anyway, being a bit uninterested in school i finished aged 18 and started working in the family business. Fast forward 9 years and i'm still there although married and a bit more mature! With the country going to shit in 2008 it was finally time to get off my ass and look at getting some education.So, being the car lover automotive engineering was what i wanted to do. No-one here offered the course and with a then pregnant wife a move to the UK wasn't an option. So, mechanical engineering it was.First year is a common year where you then pick your discipline. Easy choice for me and i ticked mechanical on the form.During the summer holidays with the baby getting bigger we decided to redo the tv unit enclosing everything to keep the grubby fingers off my goodies. Two weeks from returning to college and i'm putting the finishing touches to everything, all i need is an IR extender to control everything while its out of sight. One found and ordered it arrived a few days later. I wired it up and i sat there looking at it and, no exaggeration, in that instant i realised just how much of an interest in electronics i had but never ever realisedAnyway, thats my random story for today. Not sure why i thought of it but its probably a bit odd for someone not to do anything, or even realise they wanted to do anything until they were in their late 20's. Hell i never even soldered until about 18 months ago :/Heres the magic device that lead me on the path to the EEVBlog forumhttp://www.marmitek.com/en/product-details/audio-video-at-home/operate-anywhere/operating-outside-the-infrared-range/invisible-control.php

author: SnakeBite
author_rank: Regular Contributor
timestamp: September 20, 2011, 09:38:32 pm
content: good for you

author: Chet T16
author_rank: Frequent Contributor
timestamp: September 21, 2011, 08:10:05 am
content: Ha, i know full well its a story only of interest to me but i felt like writing about it!
How to find the internal resistance of battery with Ohms and Kirchoffs Laws - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 19, 2011, 05:59:13 pm
content: Internal resistance of the battery is not a fixed, static value. The internal resistance of the battery varies with the chemistry, condition, charged, discharged, and load of the battery. There are two sets of voltages measured from the battery, battery driving a load, closed circuit load and battery not driving load, open circuit voltage. The open circuit voltage is measure directly from the battery. The closed circuit load is measured with a large resistor connected to the battery. The most risky part of this experiment is lower value resistor can burn up or over heat.From the website, these equations were given:Ri, internal resistance of the battery=R1 * ((Vo open circuit/V1 closed circuit)-1)This equation came from:V1 closed circuit=Vo open circuit * R1/(Ri + R1)http://www.madsci.org/posts/archives/2003-11/1067871870.Ph.r.htmlhttp://www.instructables.com/answers/What-is-the-internal-resistance-of-a-9V-battery/

author: IanB
author_rank: Super Contributor
timestamp: September 19, 2011, 06:10:04 pm
content: Note that you will generally get a more reliable estimate of the internal resistance by using two different value resistors R1 and R2 and switching between them. The internal resistance formula then becomes:Ri = (V1 - V2) / (I2 - I1)Of course, if you know the values of the resistors you can determine I1 and I2 from the voltages:I1 = V1 / R1I2 = V2 / R2You also need to take time into consideration. When you connect the resistor to the battery you need to wait just long enough for the readings to stabilize before taking the measurement, but not so long that the battery starts to discharge and change state.There's a bit of an art to this. I usually flip the switch back and forth to get a feel for the time response and then take an average of several suitable readings.Incidentally I bought some fresh alkaline and heavy duty 9 V batteries over the weekend and I intend to measure their internal resistance when I find a few moments. I am curious about what it might be.

author: Kozmyk
author_rank: Regular Contributor
timestamp: September 19, 2011, 06:45:20 pm
content: Also if the test time is too long the cell temp will rise and the IR will change.I have a very sensitive ESR meter for testing my LiPo packs, made by Wayne Giles on RCGroups.http://www.rcgroups.com/forums/showthread.php?t=1323465He explains it better than I could.
How serious are Hellenic forces and they are strong enough for coup upon PM? - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 21, 2011, 09:50:39 pm
content: Kiriakos:I have viewed this site about the Greece military and they looked serious. They even have divers to protect the coast. They did not surrender like the French did during World War Two, but fought with old guns and what they have. With the economic down turn, will Greece be defiant of the austerity for debt payments and Euro woes and have a civil war?http://greekmilitary.net/armouredvechiles.htmhttp://greekmilitary.net/WW2.htmGreek Civil Wars were in 1974.http://greekmilitary.net/Spartans74.htmlhttp://en.wikipedia.org/wiki/Greek_military_junta_of_1967–1974Why are Greece so defiant and rebellious?Picture of a Greek, Hellenic F4 Phantom military airplane aviator. She has to obey orders liable to fire upon anyone invading or not obeying. She plans to shoot unless fired at. No one at that Hellenic military website seem friendly, but very stern and serious. The most scary pictures are the Hellenic spacial forces divers with scuba rebreathers and pistol pointing pictures and the knife and close fighting in the Maliagha Fortress in April 9, 1941, piles of dead on all sides in the web site. She will let the ground missiles take down the foreign, if need to or be forced to land and surrender. Macedonia is claiming to be Greek, but Greece would like to be named Macedonia, not this former republic of Yugoslav Macedonia. There was a Macedonian protest in Australia over the name of their country. The air force is often divided over the right and left wings, not the airplanes, but supporting the country's PM or leader or the population in conflicting views. Hellenic forces have varying degree of self defense and loyalty to the country's leader and PM in times of economic turmoil like the present.Disobedient Hellenic Army at a bunker during World War Two costs lives in 1941.http://greekmilitary.net/metaxas.html

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: September 21, 2011, 10:35:28 pm
content: Our tactic missiles has an expiration date of 2060.I am going to sleep peacefully, at about the 2060 wake me up..By the way I do not surrender too. ( Air Force)QuoteBecause they are capable to deal with an enemy of 10 times larger than their size.The last 70 years this is our strategy.This is my quick reply to you, I will not expand more, lets hope that you got most of your answers.

author: SgtRock
author_rank: Unknown
timestamp: September 21, 2011, 10:44:14 pm
content: Dear Kiriakos:--I pray that you and your family will be safe, what ever happens.Best RegardsClear Ether
Dave Jones should start a small rigors of nature electronics endurance shop - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 19, 2011, 05:24:29 am
content: Dave Jones seems to be able to know what situations to test for in rugged, outdoor electronics, multimeters, GPS hand held units, and FRS radios. He needs to asked for a fee to test electronics endurance in the rigors of nature like tossing it into the stream in his videos from companies. Test your products in Australia's outback, the dangerous lands of bush fires, poisonous snakes, rough oceans, rough waters, dust, bush, searing sun, heat, and humidity. If your product could be tested in Australia's outback, then it is Australian outback tough as good as MIL Spec.
Microwave dish failure - Page 1
Forum section: electronics / general

author: TheWelly888
author_rank: Frequent Contributor
timestamp: September 17, 2011, 11:46:12 am
content: I came across this video by chance, a microwave repeater dish had failed and the technician uncovers the reason!Look at how much got stuffed in there!

author: tekfan
author_rank: Frequent Contributor
timestamp: September 18, 2011, 01:27:13 am
content: That's insane! I wonder how much time it took for that squirrel or woodpecker to gather that many acorns.The picture with the small yellow bucket is just hilarious!

author: SgtRock
author_rank: Unknown
timestamp: September 18, 2011, 01:44:38 am
content: Dear TheWelly888:--When tekfan said Squirrel or Woodpecker I, immediately said to myself Bluejays, having read the Mark Twain story "The Bluejays", years ago.--When I finally found a link to a legal free download of the the story as an MP3, I was surprised to see mention of the very same clip as the one in your post. I have also been attacked by nesting Bluejays, just like Uncle Vernon's Magpies.--In any case, see below for the link to a very funny story:http://ia600407.us.archive.org/14/items/Blue_Jay/Blue_Jays.mp3"Three weeks in the lab will save you a day in the library every time" Stanley Williams, HP LabsBest RegardsClear Ether

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: September 18, 2011, 05:43:13 pm
content: Hahahah, that's incredible! Man, that squirrel is going to be mighty pissed when it comes back.
Dave gave ideas to Extech of how to crash a DMM on the wall  - Page 1
Forum section: electronics / general

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: September 17, 2011, 03:47:10 am
content: LOL ...its true ..I discovered an search engine for videos today, and I was looking the results about multimeter reviews.In the results I found theExtech EX530 Heavy Duty MultiMeter Endurance TestAnd the content or some of the ideas, looked almost identical with whatDave did with the Fluke 28II(video blog 66).Then I am checking the dates .... Dave did it atMarch 7th, 2010 and Extech at27 Apr2010After my review about the Agilent U1272A and the high temperature test of the unit it self,a week later on, Extech made a video with the employees of Extech to run around the Extech offices with their DMM on their hands measuring hot summer temperature of the environment.Such lack of imagination is unjustified, they should pay us at list !!If you have miss it, here it is, Dave in action ...

author: Wartex
author_rank: Frequent Contributor
timestamp: September 17, 2011, 03:54:00 am
content: URL post FAIL.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: September 17, 2011, 04:14:52 am
content: Oh no, I do not post Extech links on youtube with out getting payed first.Google about it.

author: Psi
author_rank: Super Contributor
timestamp: September 17, 2011, 04:46:05 am
content: he means it shouldn't be blue unless it's a url.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: September 17, 2011, 12:06:11 pm
content: Ok Green then ... hey the forum spins fast today.Dave did something again.

author: EEVblog
author_rank: Unknown
timestamp: September 17, 2011, 12:28:01 pm
content: Quote from: Kiriakos-GR on September 17, 2011, 12:06:11 pmYou pay 30 times the cost on a server and you get 30 times the performance it seems!Dave.
Monash Engineering Student Finds Missing Mass - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: September 17, 2011, 01:49:47 am
content: Greetings EEVBees:--Amelia Fraser-McKelvie of Monash University has found a large portion of the Universe's missing mass in previously unseen filaments that run between galaxies, clusters and super clusters. Good on ya, Amelia. See below link for article.http://www.theregister.co.uk/2011/05/24/oz_undergrad_finds_the_missing_matter/--WIMP si trovano. Mean while in the mountains of Italy, researchers from the CRESST facility at Gran Sasso are claiming to have detected sixty seven WIMPS (Weakly Interacting Massive Particles), which interact only through gravity and the weak force, and are completely invisible to the electromagnetic and the strong force. WIMPS have long been proposed as one of the sources of "Dark Matter". See below link for the article:http://techie-buzz.com/science/dark-matter-detection-cresst.html--And, below is the paper describing the equipment and research:http://arxiv.org/PS_cache/arxiv/pdf/1109/1109.0702v1.pdf"Three weeks in the lab will save you a day in the library every time" Stanley Williams, HP LabsBest RegardsClear Ether

author: vk6zgo
author_rank: Super Contributor
timestamp: September 17, 2011, 02:19:33 am
content: Did she find the missing Priest & Congregation too?VK6ZGO

author: PeterG
author_rank: Frequent Contributor
timestamp: September 17, 2011, 03:12:27 am
content: VK6ZGO, there are sooo many ways to answer that comment............. non of witch are politically correctRegards
The Nutter doing what he does best - Page 1
Forum section: electronics / general

author: david77
author_rank: Frequent Contributor
timestamp: September 16, 2011, 03:01:38 pm
content: I'm surprised the stylus kept tracking the groove at that speed

author: Kozmyk
author_rank: Regular Contributor
timestamp: September 16, 2011, 05:41:08 pm
content: I have to limit myself on that channel.I could waste hours watching that madness.

author: tesla500
author_rank: Regular Contributor
timestamp: September 16, 2011, 06:46:19 pm
content: I did something similar for a high speed video compilation I made.Jump to 1:39 to see the record exploding at 7200RPM:Of course, no one was in the room when these shots were taken!

author: orbiter
author_rank: Frequent Contributor
timestamp: September 16, 2011, 08:01:00 pm
content: Great job there tesla, really enjoyed that one.
Organ Grinder Possible No Show - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: September 15, 2011, 02:15:05 pm
content: Greetings EEVBees"--Irageian President Mymood Iminajihad will speak at the UN conference on racism later this month. No word on whether the organ grinder will be appearing this time, but documentary film maker Mitchael More will take the stage after Iminajihad to check for any snickers bars that may have inadvertently been left behind.--Iminajihad and More issued a joint statement demanding a UN investigation of "Boosh and those beanie wearing pastrami snappers" who blew up the World Trade Center."Three weeks in the lab will save you a day in the library every time" Stanley Williams, HP LabsBest RegardsClear Ether

author: Zad
author_rank: Super Contributor
timestamp: September 15, 2011, 05:53:35 pm
content: Er. What?

author: Chet T16
author_rank: Frequent Contributor
timestamp: September 15, 2011, 07:42:25 pm
content: Quote from: Zad on September 15, 2011, 05:53:35 pmHahaa, sometimes i love the small screen on my netbook because thats exactly what i was thinking as i was scrolling down the page and seen it
Square Knots Instead Of Wire Nuts - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: September 15, 2011, 04:50:48 pm
content: Greetings EEVBees:--See below for link to extremely interesting article about double walled carbon nanotube cables with specific conductivities exceeding that of any metal, except sodium. You can make connections by tying knots, with less change in resistivity due to thermal variation, and better current carrying ability than copper, and at 1/6 the weight. This is just a small beginning, but this could prove to be a very significant technology if it is not overtaken by room temperature super conductivity.http://www.nature.com/srep/2011/110906/srep00083/full/srep00083.html#f4"Three weeks in the lab will save you a day in the library every time" Stanley Williams, HP LabsBest RegardsClear Ether
State of the Union - Page 1
Forum section: electronics / general

author: gregariz
author_rank: Frequent Contributor
timestamp: September 16, 2011, 10:49:38 pm
content: In a bit of a slow day I see we rate highly in todays news itemhttp://finance.yahoo.com/career-work/article/113308/10-most-hated-jobs-cnbc

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: September 17, 2011, 12:17:51 am
content: Its true that part of the payment for every job other than money, it is also to receive some appreciation that makes you feel pride for your self.A bit of pride that helps you to maintain your self esteem.If you are a self employed (freelancer), your payment is mostly large portions of self esteem, but now you have to find and a second job,so to cover the bills. LOL
The Cleverscope CS series are the only thing made "down under," but New Zealand. - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 15, 2011, 04:43:41 am
content: The Amalgamated Wireless (Australasia) Limited Type R6673 50 mm CRT 12 kHz analog oscilloscope is too dated for us or myself. Here is something that is an oscilloscope and not made in Asia, Europe, old oppressive England, or U.S.A. Though the U.S.A. is oppressive too. China, England, and U.S.A. are getting to become alike, somewhat, just the language is different. The Cleverscope CS is made, assembled in New Zealand:http://www.cleverscope.com/about/Prices are high, too much for me. It is fun to read about it:http://www.cleverscope.com/products/

author: EEVblog
author_rank: Unknown
timestamp: September 15, 2011, 08:37:33 am
content: I got a quick interview (and teardown) with Bart Schroder from Cleverscope, video coming soon...Dave.

author: Hypernova
author_rank: Unknown
timestamp: September 15, 2011, 03:10:57 pm
content: My 4th year project at Auckland Uni 3 years ago was to actually create a physical control interface for the PC software for CS, with the usual CH.A/B and timebase stuff. The project name was literally the "USB knob box". I used the existing Cypress MCU that served as the FPGA<->USB interface to power a switch matrix that can read encoders, switches and power LEDs using 3 multiplexed GPIO ports at 3KHz. Looking back now it was a cluster fuck of epic proportions. You can see the PCB I made as the background for the ppt for the seminar.Obviously didn't work out, at the projected volume there was no way to drop the price down to a point where people would actually pay for it.
Amalgamated Wireless (Australasia) Limited Type R6673 50mm  12 kHz oscilloscope - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 15, 2011, 03:39:45 am
content: The Amalgamated Wireless (Australasia) Ltd. Type R6673 is a 50 mm circular CRT display analog oscilloscope with bandwidth of 30 Hz to 12 kHz, slightly below audio or right at the most interesting part of audio. It was made completely of discretely wired components, no printed circuit boards or ceramic holders like the earlier Tektronix breadbox oscilloscopes. Here it is, totally Australian made analog oscilloscope:http://www.physics.uq.edu.au/physics_museum/tour/electronics.html

author: vk6zgo
author_rank: Super Contributor
timestamp: September 15, 2011, 05:06:41 am
content: AWA made many other Australian Oscilloscopes of around the same bandwidth,but with larger 5" displays.Philips Australia made one that looks almost identical from the outside to the AWA one in the link.The bigger companies didn't make 'scopes much after the early 1950s,as British Telequipment units became available fairly cheaply,whilst Tektronix dominated the high end market.AWA,STC.Philips, etc were pretty much busy making consumer equipment,marine & land based comms equipment,Broadcasting transmitters etc.during the 1950s & 60s.The specialist manufacturer,BWD made Analog Oscilloscopes in Australia until quite recent years,including models that were in the Tek 400 series class.There is a popular myth that Australia never had an Electronics industry,or much else,& that we spent most of our time "riding on the sheep's back",but a little research shows this to be nonsense.Agriculture was,& is a large contributor to Australia's economy,but it does a disservice to the people involved in Electronics manufactureover many years to pretend it never happened!VK6ZGO

author: johnboxall
author_rank: Unknown
timestamp: September 15, 2011, 08:03:27 am
content: Karl von Moller's upcoming documentary will have a lot of Australian electronics history:http://www.karlvonmoller.com/blog/2010/10/07/state-of-electronics-trailer-is-now-online/

author: vk6zgo
author_rank: Super Contributor
timestamp: September 15, 2011, 12:14:10 pm
content: Two books which give an insight into Australian Electronics history are "Australia's Radio Pioneers"written by Neville Williams,& published by "Electronics Australia" in the late 1980s,& "Clear across Australia",by Ann Moyal, from 1984,which is the story of the PMG's Dept & Telecom Australia.VK6ZGO
olyMEMS - OHS Scholarship! - Page 1
Forum section: electronics / general

author: cksa
author_rank: Regular Contributor
timestamp: September 15, 2011, 04:34:21 am
content: Hi eevblog friends!I've just arrived in New York and will be heading to the open hardware summit tomorrow! I've submitted our project as a candidate for the scholarship there. Here is my submission video:<iframe width="560" height="315" src="https://www.youtube.com/embed/I2zlvx9ysxE?rel=0" frameborder="0" allowfullscreen></iframe>And here is our website:www.jouncelabs.comIf the project sounds good, you can vote for us here (look for olyMEMS) -->http://www.openhardwaresummit.org/open-hardware-scholarship-voting/Thanks!
Look what turned up at work today. - Page 1
Forum section: electronics / general

author: Kibi
author_rank: Unknown
timestamp: September 26, 2011, 04:21:00 pm
content: Well, this is a video of it leaving, but anyway.It's a Royal Navy Westland Sea King rescue helicopter. It featured on the Blue Peter TV program earlier today.

author: IanB
author_rank: Super Contributor
timestamp: September 27, 2011, 02:25:41 am
content: Quote from: Kibi on September 26, 2011, 04:21:00 pmWell, OK, a helicopter is a helicopter, but Helen Skelton, she's hot! Was she in the helicopter?

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 27, 2011, 02:47:36 am
content: I was wanting to see an Australian salt water crocodile. It is a rescue and maybe submarine finding Westland WS-61 Sea King helicopter for the navy. It was originally designed by Sikorsky. It has a radar dome in the back top. It has the Rolls Royce Gnome engines.http://en.wikipedia.org/wiki/Westland_Sea_Kinghttp://en.wikipedia.org/wiki/Sting_Ray_torpedohttp://en.wikipedia.org/wiki/GEC-Marconi_scientist_deaths_conspiracy_theoryHelen Skelton, presenter, made it in the marathon:http://en.wikipedia.org/wiki/Helen_Skeltonhttp://www.kbjmgt.co.uk/clients/26-helen-skeltonHelen Skelton wanted to be a crew of the Royal Navy Sea King WS-61 helicopter. Here is the video of her training, if the helicopter got shot down and crashed in the sea with her crew on board. She is wearing standard aviator clothes and military. I am not familiar with this, but did a search at You Tube. I live in North America. She should try the Russian MiG-29UB ride. If someone could sponsor her to ride in a sphere capsule and parachute in Siberia, too:

author: Kibi
author_rank: Unknown
timestamp: September 27, 2011, 09:27:15 pm
content: Quote from: IanB on September 27, 2011, 02:25:41 amYes she was in the helicopter
Topic Notifications not working? - Page 1
Forum section: electronics / general

author: PeterG
author_rank: Frequent Contributor
timestamp: September 13, 2011, 05:43:41 am
content: Is it just me or are Topic Notifications not working?Regards

author: Unknown
author_rank: Unknown
timestamp: September 13, 2011, 01:21:51 pm
content: Quote from: PeterG on September 13, 2011, 05:43:41 amNo it's not just you.Some things weren't reinstated when the existing server was or they have been shutdown while Dave finds his CPU hogs. There is a dedicated server to be activated, my guess is you will see all return to normal once that is pressed into service.

author: PeterG
author_rank: Frequent Contributor
timestamp: September 13, 2011, 01:31:22 pm
content: Thanks, i was hoping it was server related..Regards
LCD retrofit replacement to the aging CRT in HP/Agilentspectrum analyzer - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 15, 2011, 12:16:10 am
content: Here is an EBay URL to buy a LCD kit to replace the aging CRT tube display in HP/Agilent 8562 series spectrum analyzer:http://www.ebay.com/itm/LCD-Kit-HP-8562A-8562B-8562E-8563A-8563E-/200379184317?pt=BI_Analyzers&hash=item2ea787b4bdThe kit is costly. It is not for me. It is available and it will lighten the weight of the spectrum analyzer and no more phosphor screen burns from long hours of operation and signal monitoring.

author: joelby
author_rank: Frequent Contributor
timestamp: September 15, 2011, 02:12:55 am
content: Awesome!I'm not sure *who* it's for - if you were a serious user of one of these tools, you wouldn't replace bits of it with third-party components that require extensive rework to the CPU board when you could probably find a replacement CRT for much less. If you're a hobbyist, your money would best be spent elsewhere.
ECCE in Phoenix, anyone there? - Page 1
Forum section: electronics / general

author: scrat
author_rank: Frequent Contributor
timestamp: September 11, 2011, 10:20:14 pm
content: Hi all. I'm going to the ECCE in Phoenix, starting next saturday. Since it seems to be one of the largest "events" about energy conversion, and so has much to do with power electronics, I wandered if anyone of the forum was going to be there too...I also know some of you live nearby, and would be happy to receive any advice.Thanks,Sandro

author: mkissin
author_rank: Regular Contributor
timestamp: September 12, 2011, 12:46:30 am
content: I'm going to be there. I was there last year too, and it was a pretty good conference.
Jailbreaking devices like I Pad and I Pod Touch for Android. Oscilloscopes? - Page 1
Forum section: electronics / general

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 12, 2011, 12:33:52 am
content: Have anyone jail broken an Agilent DSOX 2002a Windows CE based oscilloscope to run Windows CE applications with keyboard and mouse via USB port?
Silicon security be-all and  end-all ? Not quite - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: September 01, 2011, 03:35:54 pm
content: So to cut a long story shortA xbox 360 dvd media is written backwards and read outside in. xbox and xbox 360 have a unique media flag xbox and xbox360. Normal writeable media as you know has media flags too depending on the type of media it is.Media flags are important in this way as it the way the xbox identifies and verifies the authenticity of the media, however whilst adding a muti layered security model they forgot to implement proper security on the optical drive instead blindingly trusting it.A exploit was found by rewriting to blocks of the firmware making it report a dvd-r media type as xbox360 media type thus tricking the console to think it had a legitimate disc.This started a cat and mouse game were micrsoft started to use ever greater measures to thwart firmware hacks.This is the interesting bitThe latest micro-controller used inside the 360 optical drive has spi bus disabled look at this quite unique way to thwart it.

author: Tony R
author_rank: Regular Contributor
timestamp: September 11, 2011, 11:21:40 pm
content: Sounds like an easy way to brick and Xbox
What's the type of this capacitor? - Page 1
Forum section: electronics / general

author: onemilimeter
author_rank: Frequent Contributor
timestamp: September 11, 2011, 03:44:56 pm
content: The label on the capacitor (I presume it's a capacitor) is A5C104K (should be 0.1uF). What's the type of this capacitor? Cheers.

author: Fraser
author_rank: Super Contributor
timestamp: September 11, 2011, 05:50:50 pm
content: I believe this to be an AVX part. The part number provides lots of information for you.Catalogue attached with full specs etc.Page 26 (PDFpage 28) applies.A5C104k =A - Manufacturer = AVX5 - Max operating voltage = 50VC - Dielectric = X7R type104 - Value = 100,000 pF = 0.1uFK - Tolerance = +- 10%Capacitor is a DIP Guard multilayer ceramic type using X7R dielectric with a rating of 50V and capaitance of 0.1uF

author: Lawsen
author_rank: Frequent Contributor
timestamp: September 11, 2011, 07:30:44 pm
content: The component is a non polarized surface mounted capacitor for filtering. I do not have a capacitance meter or signal generator and oscilloscope connected to it with a math formula to solve for capacitance at particular frequency. Polarized surface mounted capacitors are the same tan yellow color, but with a stripe on it for indicating charge.

author: Frangible
author_rank: Regular Contributor
timestamp: September 11, 2011, 09:23:28 pm
content: That looks like a monolithic ceramic type of capacitor. Good for filtering, +/-10% tolerance usually.

author: onemilimeter
author_rank: Frequent Contributor
timestamp: September 12, 2011, 05:30:37 pm
content: Quote from: Lawsen on September 11, 2011, 07:30:44 pmGuess you're referring to tantalum chip capacitor...