hybridfree/eevblog-posts huggingface dataset:
Pole Vaulting Engineer - Page 1
Forum section: electronics / general

author: sacherjj
author_rank: Frequent Contributor
timestamp: April 28, 2014, 01:35:52 pm
content: There once was a young engineer, who having worked for several years, decided that he and his family should have a weekend getaway place.He searched the surrounding country, and found a lovely spot with frontage on a small river. They built a cabin, and began spending time there every chance they got. The kids loved it, and friends came for the quiet and fishing.The engineer, however, wanted something unique for his cabin. He had been an award-winning pole vaulter in college. He therefore built a set of poles with a crosspiece, and a mulched run. He bought a new carbon fiber vaulting pole, new shoes, and was set.He would set off down the run, plant his pole, soar over the crosspiece, and land in the river with a satisfying splash. What a great way to spend a hot afternoon. He tried to teach a few friends to vault, with no success.He enjoyed his cabin for years, and went out early in the spring one year. It had been a very wet winter, lots of rain afterward. When the family arrived, the river was up and flowing at a good clip, with twice the usual current flowing.The engineer was determined to enjoy a few vaults into the water, although his wife didn't think it was safe. But he was a good swimmer and proceeded to have a go at it.His run and jump were flawless, he hit the water in good form, but upon surfacing, he was swept downstream and disappeared. His body was found later that day, tangled in streamside debris.It was a sad end for the engineer and the family sold the cabin, with no desire to return to the scene of such tragedy.Our lamented engineer was a civil engineer. Had he consulted one of his electrical engineer brethren, he would have been warned that "It's not vaultage that kills you, it's the current!"

author: vk6zgo
author_rank: Super Contributor
timestamp: April 28, 2014, 01:57:54 pm
content: Like the lady who was walking through the Olympic Village,when she encountered an athlete.She asked, "Are you a pole vaulter?"He replied, "No,I am German,but how did you know my name?"

author: GreyWoolfe
author_rank: Unknown
timestamp: April 28, 2014, 03:22:38 pm
content: Obviously, yesterday was not Sunday, but Punday. The value of a good pun is in the OY of the beholder
Good youtube series for troubleshooting skills - Page 1
Forum section: electronics / general

author: Stonent
author_rank: Super Contributor
timestamp: April 27, 2014, 09:01:25 pm
content: There's a car repair channel called "RealFixesRealFast" that does an excellent job in my opinion of teaching troubleshooting logic that is applicable to other technical fields. I find that a lot of people just don't seem to have the ability to conceptualize a full system and how the parts interact when troubleshooting.One of the common themes in the channel is "Gather your evidence first" and never just throw replacement parts at an issue.In this video he uses an automotive diagnostic tool that can graph data. The suspect part normally outputs a voltage of 0.1V to 0.9V in a continuous up and down pattern with 0.5V being the midpoint. But when he tests it, it never goes above 0.3V.But he's still not completely convinced so he wants to gather more evidence. The data that he has been getting is data the computer reports it is reading but not actually the raw data from the sensor.So here you see from the Fluke 87 V it is showing the full range of 0.1V to 0.9V before it gets into the car's computer. But the computer never reports higher than 0.39V.So what's next?So he checked with another tool and it confirmed that the input voltages are within range, but it isn't reading them correctly. When logical devices do illogical things, what could that mean? Possibly an issue with an ADC inside the car's computer. But that's an expensive part to replace. ADCs need good reference points so he makes sure that all the wires going into the computer have proper voltages.Finally, the conclusion:
Electronics or computer recycler/exchange/surplus stores near Milwaukee , Wi ? - Page 1
Forum section: electronics / general

author: Palmsquirrell
author_rank: Contributor
timestamp: April 27, 2014, 02:17:38 am
content: Any computer or electronics exchange / surplus / recycler stores around Milwaukee , Wisconsin?Need to find an HP-IB or GPIB eletronic board . Board does not need to work, just need the standoff jackscrew .

author: T3sl4co1l
author_rank: Super Contributor
timestamp: April 27, 2014, 05:02:10 am
content: Isn't that a standard or metric part? Don't suppose you can measure the other one and find it on McMaster Carr...Around here, I don't know of any stores of that sort anyways, besides American Science and Surplus of course. But they wouldn't have special screws. At least unless you were really lucky and found some in a bin.Tim

author: miguelvp
author_rank: Super Contributor
timestamp: April 27, 2014, 05:07:02 am
content: Tim is rightGoogle:IEEE 488 Hex Stud Mount StandoffHere is a pdf with part numbers hope it helpshttp://www.boltproducts.com/documents/lyntron/IEEE488StudMountStandoff.pdfMaybe some luck in this findchips search:http://www.findchips.com/search/ieee%20488%20hex%20standoffNope they seem like the wrong dimmensions:found a kit of IEEE 488 standoffs:http://www.onlinecomponents.com/te-connectivity-amp-brand-5548081.html?p=10430646but shipping is more expensive than the standoffsAnd I'm unclear if it comes with the connector or is just the standoff kit

author: Palmsquirrell
author_rank: Contributor
timestamp: April 28, 2014, 04:44:01 am
content: Quote from: miguelvp on April 27, 2014, 05:07:02 amThat is what I am looking for
Rigol DP832A noise levels on output - Page 1
Forum section: electronics / general

author: Terabyte2007
author_rank: Frequent Contributor
timestamp: April 27, 2014, 10:22:19 pm
content: First off, this is not a properly controlled noise level test but one I have used to make a general determination as to noise on the DC output on various PS units. I have found that the Rigol DP832A seems to have a bit more background noise on the outputs than other cheaper multi-channel PS units such as the Mastech HY3005F. I used my Agilent 34401A and BenchVue to log a controlled warm-up and run-time period of approximately 34 minutes each from a cold start to full operating temperature. Each power supply used the same cable (Low loss, direct connect banana jacks) to the Agilent and on the same power circuit. I also let the Agilent warm up for an hour prior to the test. The room temperature did not vary more that 1-2 degree over the entire test, Test leads were connected and placed in the exact location to where the PS units were placed. No other gear was operating at this time. Both PS units were setup to around 9.01 volts DC with just the high impedance load of the Agilent.My preliminary results and repeated tests showed the Rigol DP832A to have a higher noise rail than the cheaper models such as the MasTech and Korad. Keep in mind that this was with no load. What surprised me was the difference in delta between the Rigol DP832A and the MasTech HY3005F.The Rigol had a min. of 9.00316 and a max. of 9.00539 with a avg. of 9.00482 and a delta of 2.15840 mVdc.The MasTech had a min. of 9.03310 and a max. of 9.03320 with a avg. of 9.03315 and a delta of 99.8000 uVdc.I was able to repeat this test several times with very similar results. Has anyone noticed that the Rigol DP832A seems to be a bit noisier than some cheaper units like the MasTech HY3005F? Is there anything I can do to improve this test short of building the proper testing environment?Attached are the logs.The Rigol was 9.00568 and the MasTech was 9.03865.There appears to be slightly over 1.1 mVdc greater noise on the Rigol than the MasTech which was surprising to me to say the least. I also want to add that the Rigol had a better flat DC output once warmed up which the MasTech did continue to slowly rise a bit more.
Suggestions on a good reflow solder paste - Page 1
Forum section: electronics / general

author: copper dog
author_rank: Newbie
timestamp: April 26, 2014, 07:37:36 pm
content: Getting into hot air reflow soldering. Have all my gear but need to select a good solder paste. There's a fair selection of this stuff out there so I thought I'd ask my forum colleagues for advice.It's my first time using reflow and I don't have a dispenser system (we'll see how that goes). How does Chip Quik 63/37 sound for use with hot air? How about Water Soluble vrs No Clean?

author: gxti
author_rank: Frequent Contributor
timestamp: April 26, 2014, 10:16:55 pm
content: Use no-clean. Water-solublemustbe washed thoroughly or it will corrode your board. Chip Quik is fine brand-wise.

author: nanofrog
author_rank: Super Contributor
timestamp: April 27, 2014, 02:24:02 am
content: ChipQuik is good stuff, as isAmtechandZephPaste(small quantity syringes available, ~30g or so). Zeph has a 1yr lifespan when kept refrigerated.

author: copper dog
author_rank: Newbie
timestamp: April 27, 2014, 12:22:44 pm
content: Thanks. I'll check them out. Quick Chip claims it's stuff doesn't require refrigeration.

author: zapta
author_rank: Super Contributor
timestamp: April 27, 2014, 02:27:26 pm
content: Instead of dispensing system you can use stencils, I am getting much better results this way, oshstencils.com has inexpensive stencils (pick the 5 mil) and the arrive way before the PCB.

author: Kjelt
author_rank: Super Contributor
timestamp: April 27, 2014, 03:56:11 pm
content: Quote from: copper dog on April 27, 2014, 12:22:44 pmLook at the specs, they claim 1 year with refrigeration, half year without on room temperature. Now roomtemperature is 18oC and its lifetime goes fast down when temperature goes up. Better place it in the fridge between sessions.
Timebase Stability Specification - Page 1
Forum section: electronics / general

author: KSP
author_rank: Regular Contributor
timestamp: April 26, 2014, 10:30:28 am
content: Hi allSo the issue is whenever I am trying to verify the accuracy of the timebase of an item (in this case an Agilent 53131A counter) I never get given a true spec for accuracy, they always have temp stability, aging rate, etc. But what I want is just basically to take a measurement and determine whether it needs adjusting, yes or no. I'm so used to working with absolutes; i.e. it will be accurate to +/-1ppm etc, so all this nonsense throws me. See attachment for timebase 'spec', I am using option 001

author: TMM
author_rank: Frequent Contributor
timestamp: April 26, 2014, 10:43:44 am
content: I don't see the issue to be honest. If you want a 'one accuracy fits all', perhaps add them all up and multiply by 10? =6x10^-6

author: KSP
author_rank: Regular Contributor
timestamp: April 26, 2014, 10:51:22 am
content: Well say for example it had a drift rate of 1x10^7/day, but hadn't been used for 10 years... Does this mean that it could have an error of 3.650x10^4 and still technically be within its working tolerances? Because that seems rediculous. Surely in order to have confidence in something there needs to be something that states that itwillperform to a certain level of accuracy...

author: T3sl4co1l
author_rank: Super Contributor
timestamp: April 27, 2014, 03:20:27 am
content: Quote from: KSP on April 26, 2014, 10:51:22 amYes, but no. See, it's probably in need of cal by then.Drift being what it is, 1/rtDays is probably more representative, in which case the error looks more like 6.0 x 10^-6. Which sounds kind of reasonable.Tim
Check out these probes.... Sex on a BIC! - Page 1
Forum section: electronics / general

author: Tex
author_rank: Newbie
timestamp: April 26, 2014, 01:30:01 am
content: Saw these homemade probes on eBay, couldn't help but share.

author: GreyWoolfe
author_rank: Unknown
timestamp: April 26, 2014, 02:08:57 am
content: Just don't ask anyone if they want to click your Bic

author: Whales
author_rank: Super Contributor
timestamp: April 26, 2014, 04:39:16 am
content: *guilty of doing something similar after breaking a probe and having no spares, but it involved less elegance and more heat-shrink*

author: XOIIO
author_rank: Super Contributor
timestamp: April 26, 2014, 04:59:14 am
content: Heh, ebay? how much for them?

author: echen1024
author_rank: Super Contributor
timestamp: April 26, 2014, 05:16:08 am
content: CAT Rating? Seems like CAT IV to me.

author: SeanB
author_rank: Super Contributor
timestamp: April 26, 2014, 06:05:09 am
content: I made some out of copper roofing nails once, using a cheaper BIC pen. They worked quite well.

author: steve30
author_rank: Frequent Contributor
timestamp: April 26, 2014, 12:27:12 pm
content: I've come across a few people who have made and used good home made probes. Haven't seen any for a while though.Those ones looks quite neat.
Dave Taylor ping... check 1 2...... - Page 1
Forum section: electronics / general

author: cnkay
author_rank: Newbie
timestamp: April 27, 2014, 01:37:45 am
content: hey dave just heard the amp hour episode when you were on. would like to ask you a question. could you email me.CNKay.......1......@(nospam)gmail.com remove the dots and nospamFunny I wrote to EEV Dave and asked him to maybe do a 8060a review of older Flukes. He informed me it was already done.I must say compared to the 73iii the continuity is no comparison. I have a 112 as well and still find myself using the 8060a.The 8060a was the first real meter i purchased back in 1990? One for me and one for my father.Never noticed the 2 and 20 range input impedance difference.
Bundy Fest 2014!  - Page 1
Forum section: electronics / general

author: CaptnYellowShirt
author_rank: Frequent Contributor
timestamp: April 23, 2014, 04:54:38 pm
content: Pack a bag. We're headed to...http://www.deathandtaxesmag.com/219297/bundyfest-burning-man-guy-to-hold-month-long-music-fest-across-from-cliven-bundys-ranch/

author: vk6zgo
author_rank: Super Contributor
timestamp: April 24, 2014, 01:30:08 am
content: I think "Bundy Fest" has a different shade of meaning in Oz!

author: nanofrog
author_rank: Super Contributor
timestamp: April 24, 2014, 03:52:31 pm
content: Saw the title, and was thinking of an "Al Bundy" impersonator's convention or something.This guy(TV character played by actor Ed O'Neill), for those that may never have seen the show,Married With Children.

author: Dongulus
author_rank: Regular Contributor
timestamp: April 24, 2014, 04:50:31 pm
content: Quote from: nanofrog on April 24, 2014, 03:52:31 pmI was hoping for the same.

author: vk6zgo
author_rank: Super Contributor
timestamp: April 25, 2014, 04:33:25 am
content: If you think Mr Bundy is a trifle eccentric,check out this bloke!http://en.wikipedia.org/wiki/Principality_of_Hutt_RiverI doubt the USA authorities would be quite as "laid back" as those in Oz,though!

author: Vgkid
author_rank: Super Contributor
timestamp: April 25, 2014, 04:49:19 am
content: I was hoping that this would be a festival about Ted Bundy.

author: mrflibble
author_rank: Super Contributor
timestamp: April 25, 2014, 05:16:03 am
content: I guess there is a need for an "Al Bundy Fest" then, because I was expecting/hoping to read about that.

author: CaptnYellowShirt
author_rank: Frequent Contributor
timestamp: April 25, 2014, 04:24:57 pm
content: Quote from: mrflibble on April 25, 2014, 05:16:03 amYou mean the American version of Dave?

author: zapta
author_rank: Super Contributor
timestamp: April 26, 2014, 05:58:16 am
content: Quote from: nanofrog on April 24, 2014, 03:52:31 pmStill strong on reruns even though 'pumpkin' is in her 40's now.
Was this data recording/telemetry for cars? - Page 1
Forum section: electronics / general

author: nardev
author_rank: Unknown
timestamp: April 25, 2014, 09:05:50 am
content: I found this image herehttp://www.bsccoc.ca/FordOfBritain100.phpand i'm bit confused.As far as i remember, wireless telemetry was available at that time, also, those cables look so strong and bit overkill for a task. Also, what could they measure at that time when they didn't have so sophisticated sensors...Am I wrong if i say that it's probably not cable for data transfer???

author: GeoffS
author_rank: Unknown
timestamp: April 25, 2014, 10:17:21 am
content: Looks more like an attempt at in transit refuelling!

author: VK5RC
author_rank: Unknown
timestamp: April 25, 2014, 10:59:24 am
content: I am pretty sure they had quite good accelerometers at the time, by the late 70s I recall one that you could place a good one on a table and use it as a microphone. Strain gauges have always been very small, the amplifiers have been the limiting factor.Measuring responses of suspension components, as they say without the weight of the recording equipment in the test vehicle would have been quite interesting stuff.

author: nardev
author_rank: Unknown
timestamp: April 25, 2014, 04:35:47 pm
content: Quote from: VK5RC on April 25, 2014, 10:59:24 amOk fine, they had sensors, but would they really need this bulky equipment and cable, that can affect results, for telemetry at that time?

author: calexanian
author_rank: Super Contributor
timestamp: April 25, 2014, 05:07:15 pm
content: How can that go wrong?
The view of the future - Page 1
Forum section: electronics / general

author: SolarSunrise
author_rank: Regular Contributor
timestamp: April 24, 2014, 10:17:53 am
content: I just want to know your opinions of the future of electronics. Will Through hole components disappear completely? Will SMD components get smaller like 0000800004's? Or will electronics be completely replaced? Like neutrinos for example?This is going to be interesting... (Inspired by the thread008004 - smaller than 01005)

author: G7PSK
author_rank: Super Contributor
timestamp: April 24, 2014, 11:50:27 am
content: A lot of stuff will end up as one complete chip solution with no extra components required, halfway there today.

author: Whales
author_rank: Super Contributor
timestamp: April 24, 2014, 11:55:08 am
content: Quote from: G7PSK on April 24, 2014, 11:50:27 amIndeed. Freescale i.mx3 series ARM chips (for example) have everything in them to be a stand-alone computer bar decent storage, and they cost about $8 each in sample-size lots. Absolutely insane.There is quite a lot of R&D into "digital electronics" via methods other than silicon and electrons, eg quantum-computing and optical-computing. On the other end of the power scale I'm not sure, but I like the idea of having kilawatt optic-fibres running through the walls instead of wires: imagine accidentally scratching them

author: Bored@Work
author_rank: Super Contributor
timestamp: April 24, 2014, 02:06:31 pm
content: As we all know, just ask Dave, in the future electronic will just be printed

author: Rigby
author_rank: Super Contributor
timestamp: April 24, 2014, 02:17:32 pm
content: through-hole will never go away as a package technology, though DIP ICs will become harder and harder to find.SMD will not get a lot smaller as individual packages, but more and more parts will fit into packages of the current sizes.As previously stated, high-end ICs will get a lot more complex and will have more and more stuff packed in. this is not new and will continue as time goes on.HOPEFULLY, newer materials and processes will allow a few more leaps of advancement.I seem to recall thatHP Labs actually produced memristors, which was the final of the four basic, core components in electronics to be realized, the other three being the inductor, the capacitor, and the resistor. So, once those get to production, if it's possible, then we'll likely see some neat new things.

author: Tinkerer
author_rank: Frequent Contributor
timestamp: April 24, 2014, 02:33:08 pm
content: Quote from: Rigby on April 24, 2014, 02:17:32 pmYep definitely agree with this. On memristors, they theoretically are suppose to 'remember' all their previous states. So whatever people manage to come up with that will likely be very interesting.

author: GEuser
author_rank: Frequent Contributor
timestamp: April 25, 2014, 09:49:35 am
content: Everything will be gone , not one thing will survive except maybe the spaceship , that is if someone lets it survive in which I very very much doubt .imo
Cheap DHL Shipping - Page 1
Forum section: electronics / general

author: SgtRock
author_rank: Unknown
timestamp: April 24, 2014, 04:01:37 am
content: Greetings EEVBees:--I just bought a cheap $3.00 fan from NewEgg, with free shipping - 48 Hour Delivery by DHL. That has got to be the quickest and fastest since DigiKey."But oh, beamish nephew, beware of the day,If your Snark be a Boojum! For then,You will softly and suddenly vanish away,And never be met with again!'Charles Lutwidge Dodgson - Lewis Carroll1832 -1898Best RegardsClear Ether

author: calexanian
author_rank: Super Contributor
timestamp: April 24, 2014, 04:54:43 am
content: Straight up deal with the devil going on there. Amazon prime as well!

author: SArepairman
author_rank: Frequent Contributor
timestamp: April 24, 2014, 10:24:15 pm
content: SGT rock can you tell me about the soviet union decapitation plan that the USA had using B2 bombers? i read it in one of your posts but i never found a good source to read about it
Radio project ideas - Page 1
Forum section: electronics / general

author: jamesglanville
author_rank: Contributor
timestamp: April 23, 2014, 10:24:51 pm
content: Hi, I've got a little free time coming up, and was wondering if anyone had any ideas of projects to tackle or essential kit I am missing? So far:hacked ds1052e scopertl-sdr donglein the middle of making an ad9850 signal generatorin the middle of making a feed-through 50ohm bnc terminatorno antennae/rf equipment, looking for pointers on what is fun to play withI'm only really making the signal generator because I have one of the £4 ebay boards to play with (planning on etching a proper board with real chip when I have the avr controller working nicely). I have a big pile of bnc connectors and altoid tins for boxes and would like ideas of useful circuits to make for rf/general electronics. Sorry for the vague post, I just want some ideas so I can order parts ready for the summer as opposed to my normal "wait until I have free time, watch free time evaporate while I wait for things to ship from china"
Need help installing Android apps on unsupported device! - Page 1
Forum section: electronics / general

author: TVman
author_rank: Frequent Contributor
timestamp: April 23, 2014, 01:42:53 am
content: Google Play does not support A Curtis Klu LT7052 tablet!And yes this does have A TF (Micro SD) Card....What do I do???Thanks,Hunor(F.Y.I Picture is from Newegg.)

author: Rerouter
author_rank: Super Contributor
timestamp: April 23, 2014, 07:29:14 am
content: First Result on google...http://androidforums.com/klu-lt7033-all-things-root/669584-getting-amazon-appstore-google-play-klu-lt7052-step-step.html

author: TVman
author_rank: Frequent Contributor
timestamp: April 23, 2014, 03:57:54 pm
content: Thanks for the help "Rerouter"
Mr Head's failed presidential campaign - Page 1
Forum section: electronics / general

author: nitro2k01
author_rank: Frequent Contributor
timestamp: April 23, 2014, 08:22:48 am
content: Seems like Mr Head tried on a presidential campaign in his youth before finding his way into a management position at Microchip. The impatient may skip to 1:54.On a serious note though, being born in the mid-'80s, I mostly knew Rowan Atkinson as Mr Bean and later (when I became older) Blackadder, and I realize I've been missing out completely on Not the Nine O'Clock News.

author: calexanian
author_rank: Super Contributor
timestamp: April 23, 2014, 04:39:22 pm
content: Classic.... Goes right along with the Python Election Night Special.
Got a really nice Fluke for $120. - Page 1
Forum section: electronics / general

author: BennyBoy
author_rank: Contributor
timestamp: April 19, 2014, 11:56:40 pm
content: So nice is the feeling you get with a Fluke in hand!I have a few lower end Flukes, but the higher end stuff is so far above the masses! It's sort of like my Mac, it just has the look and feel of high Quality. I had to stop myself from acting like Dave with the selector knob.Just thought I'd share.Oh ya, off Ebay.

author: Fsck
author_rank: Super Contributor
timestamp: April 20, 2014, 12:00:40 am
content: 27-2 and 28-2's are tankier than the typical meters though, ala more ruggedized.

author: retiredcaps
author_rank: Super Contributor
timestamp: April 20, 2014, 12:17:45 am
content: Good score for $120!

author: Excavatoree
author_rank: Frequent Contributor
timestamp: April 20, 2014, 01:03:01 am
content: I'm green. I still don't have a 27-II.If you haven't already, watch Dave's review of the 28/27-II. (EEVBLOG #64)

author: Stonent
author_rank: Super Contributor
timestamp: April 20, 2014, 01:22:35 am
content: The one that I use is a tad more expensive.

author: BennyBoy
author_rank: Contributor
timestamp: April 23, 2014, 04:03:31 am
content: It was a good deal, but not great! I've had a saved search for the 27 II, 28 II and 87 V. I missed(out of town)a 27 II that went for 90. shipped. The 28/87's seem to go for a bit over $200. And thats just too much when I have other meter's I like, such as the Brymen 257 & 869. I got this 27 II because of Dave's torture test, and the fact you can pick them up for about half of the 28 II. Since I rarely play with AC, RMS means nothing to me, and temp would never be used either. So the 27 II is a no brainer(for Me).Quote from: Excavatoree on April 20, 2014, 01:03:01 am
Suggestions for Contents of a "Linear/OpAmp, Discrete Semi" Component Kit - Page 1
Forum section: electronics / general

author: fuzzoli
author_rank: Regular Contributor
timestamp: April 27, 2014, 04:32:39 pm
content: Hey there planet Earth!I'm in the process of restocking my parts bins. There are many resistor and capacitor kits out there at Jameco and on eBay. Jameco has several semiconductor kits too, but usually these kits have stuff many folks will never use.So I'm putting out the question to the group: What would your ideal component kits contain?There are always the old faithfuls (741, 358, 317, 301, 747, 78xx, etc., but what wouldyoulike to have in your part's bin?For the Linear / Op Amp Kit, some op-amp parameters to consider would be:- General Purpose- Low Noise- Precision- Audio- Rail-to-Rail- Specific PurposeAlso, any specific Regulators, timers, etc.Then there's the discrete semiconductor parts kit: 2N3904, 2N3906, 2N2222, 1N914, etc.I guess I'm looking for real-world usage. Obviously the ideal part varies in every situation, but I also see many project using similar parts.Be creative!I'll summarize later in the thread.Thanks!-FrankHolland, PAUSA

author: electronics man
author_rank: Frequent Contributor
timestamp: April 27, 2014, 05:50:36 pm
content: I would have a few precision parts such as the op07 opamp I would have opamp a such as the tl072 and the ones you mentioned, buy many capacitors of values that you use so you aren't left with lots of capacitors you won't use. Obviously 555 timers, and if your into arduino stock lots of atmega 328 chips with boot loader, so you can easily embed arduino in applications witch is always useful.CheersDaniel

author: tom66
author_rank: Super Contributor
timestamp: April 27, 2014, 06:09:17 pm
content: LM324/LM339 is nice, four devices per IC vs two on 358/393 (I believe they are otherwise interchangeable.)

author: calexanian
author_rank: Super Contributor
timestamp: April 27, 2014, 08:34:08 pm
content: Can't go wrong with some lm317's and some 78xx regulators. Also some good old 1N4007, some 1n4148's and maybe even some SD103's. I also find having some tip30's and tip31's handy for various purposes. And the to220 darlington comp pairs also. And I like mje51034 and mje51035. Good all around medium power high voltage and good all around high spec bjt.
Datasheets in Endnote - Page 1
Forum section: electronics / general

author: Harvs
author_rank: Super Contributor
timestamp: April 22, 2014, 12:51:03 am
content: Anyone have a clue what's the best way to put a datasheet reference in Endnote? I'm a beginner at endnote, and to be honest it seems to not be very well setup for engineering documents (albeit that could be my lack of knowledge.)
1080 on YouTube videos - Page 1
Forum section: electronics / general

author: dexters_lab
author_rank: Unknown
timestamp: April 22, 2014, 08:27:14 pm
content: just noticed a small annoyance with youtube;i just uploaded a short clip (13 seconds), it takes youtube about as long as the clip to switch to 1080is there any way to force it to play in 1080 from the beginning?

author: XOIIO
author_rank: Super Contributor
timestamp: April 22, 2014, 08:52:45 pm
content: Not that I know of. Why would you need to anyways? If someone can watch 1080p they will switch, if not, they will use 720p or whichever resolution.

author: Legit-Design
author_rank: Frequent Contributor
timestamp: April 22, 2014, 09:00:55 pm
content: http://www.chromeactions.com/One of the best ways to take advantage of all that YouTube has to offer is to enhance your video viewing experience by installing the Magic Actions for YouTube™ browser extension.I highly recommend this. I cant even think of using youtube without this anymore.Magic Actions is easy to use!Key features v6.7:? AutoHD feature - start play all YouTube™ videos in HD+ Highres > HD1080p > HD720p > 480p > 360p > 240p > 144p+ works with HTML5 player!? Ad Block - blocks annoying video ads? Instant control over volume by scrolling mouse wheel!+ OSD on-screen display+ works with HTML5 player!? Cinema Mode - 1-click and the whole page is shaded+ make you feel as if you were in a movie theater!+ click again to toggle back to the normal view+ over 20 predefined color themes+ your own custom colors+ works with HTML5 player!? Cool Day/Night toggle swicth to browse YouTube in black or white? Display user info in comments+ country flag, uploaded videos count, views, subscribers, description, date joined etc.? Expand videos to full window size? Auto Wide - always play in wide player mode+ works with HTML5 player!

author: dexters_lab
author_rank: Unknown
timestamp: April 22, 2014, 09:07:44 pm
content: Quote from: XOIIO on April 22, 2014, 08:52:45 pmindeed, but the clip is finished by the time you see it in HD. Even if you manually select 1080 it takes about 10 seconds after the video starts before it jumps into 1080... my clip is 13 seconds longi guess i could just pad the beginning out with a title or something
Free treadmill, worth grabing for the motor? - Page 1
Forum section: electronics / general

author: XOIIO
author_rank: Super Contributor
timestamp: April 20, 2014, 12:55:40 pm
content: An opportunity to get a free, apparently working treadmill has popped up, I'd have to store it in a garage for a while until I could take it apart, but do you guys think it would be worth grabbing the motor/motor driver from? I figure it would be a pretty good high torque motor.Only problem I see arising is it needs a trip to the dump later after I grab all the electronics out of it, and I'm guessing they are somewhat heavy, not sure if one person can move them around easily.

author: Skimask
author_rank: Super Contributor
timestamp: April 20, 2014, 12:59:03 pm
content: The 2 I've scavenged have had DC motors in them rated at 90VDC. I'd have to go look to find the wattage/HP rating though.And not much of a driver in these 2. A TRIAC driver circuit feeding a fullwave rectifier feeding the motor in both of them.

author: XOIIO
author_rank: Super Contributor
timestamp: April 20, 2014, 01:02:02 pm
content: Quote from: Skimask on April 20, 2014, 12:59:03 pmHave you come up with any good uses for them?What immediately comes to mind is a DIY go cart, but I don't really have an interest or the resources for that.

author: amyk
author_rank: Super Contributor
timestamp: April 20, 2014, 02:08:48 pm
content: Flip upside-down and add a steerable front wheel...

author: XOIIO
author_rank: Super Contributor
timestamp: April 20, 2014, 02:25:07 pm
content: Quote from: amyk on April 20, 2014, 02:08:48 pmLol, that would be hilarious.

author: Stonent
author_rank: Super Contributor
timestamp: April 20, 2014, 02:54:21 pm
content: Probably that motor wouldn't work well for a go cart because it isn't designed to take off under load since you're actually running along with it rather than sitting on it.

author: NiHaoMike
author_rank: Super Contributor
timestamp: April 20, 2014, 03:51:29 pm
content: Treadmill motors are apparently good for repurposing into small windmill generators.

author: SeanB
author_rank: Super Contributor
timestamp: April 20, 2014, 05:28:19 pm
content: If it is free take it, and spend an evening turning it into 3 piles of steel, copper and aluminium alloy, and go to the local scrapyard and get a little pocket money out of it. Last time i did that it was a server rack, and it was 80kg of steel and aluminium extrusion, which was pretty good money at the scrapyard. Was 200kg of other metal scrap there as well so that too was a good extra.
The world needs dreamers, but doesn't want them! - Page 1
Forum section: electronics / general

author: SL4P
author_rank: Super Contributor
timestamp: April 19, 2014, 04:21:01 am
content: Engineers are dreamers- possibly the most inefficient way to develop efficient solutions.It involves a lot of imagination and 'suck it and see', but the fast-paced world of corporate finance and law doesn't want fundamental efficiency - or half of them would be out of jobs.

author: linux-works
author_rank: Super Contributor
timestamp: April 20, 2014, 02:13:58 am
content: in software, at least, speed matters more than quality.I had a job interview recently and was given a programming test during one of the 15 minute sessions. I was not able to finish it in time and they actually let me take it home and finish it. not that it did any good: I solved the problem, included the main routine, the subroutine they wanted, all test cases with sample output and even the build command. a full solution. and I did not get the job.I asked them 'do you want it done fast or done right?'it was clear to me which they valued more. ship it with bugs, but ship it NOW and worry about fixing problems later.I really hate the direction things are going in. nothing is getting better: not employee life, job security, inventiveness, creativity. all that matters is CHEAP and FAST.when doing the job right means you are not considered for it, maybe its time to leave the field.. ;(

author: Stonent
author_rank: Super Contributor
timestamp: April 20, 2014, 02:33:30 am
content: Well nobody gets to be Chief Engineer overnight, until then you'll be handed down work started by other people.That's why you need to work on some projects that you think your company might be interested in, show the boss etc.But remember, "we see it, we own it" is the rule at a lot of places.

author: Bored@Work
author_rank: Super Contributor
timestamp: April 20, 2014, 07:19:11 am
content: Quote from: SL4P on April 19, 2014, 04:21:01 amWho told you that bullshit?

author: VK3DRB
author_rank: Super Contributor
timestamp: April 20, 2014, 07:31:20 am
content: Most successful companies have a mission statement, plastered on their wall at reception.Martin Luther Kinghad a mission statement, a vision and a dream. Even Adolf Hitlerhad a mission statement.Today, most countries leaders have no mission statement. They have no dream, no vision, except to stay in power by force or to get re-elected.
OT Missing boy found in Toy Claw Machine - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: April 17, 2014, 01:30:34 pm
content: http://www.usatoday.com/story/news/nation-now/2014/04/16/nebraska-claw-machine-toddler/7768333/"A 3-year-old boy who went missing from his home was found inside a toy claw machine in a bowling alley."

author: electronics man
author_rank: Frequent Contributor
timestamp: April 17, 2014, 04:57:07 pm
content: How the hell did he get in there?

author: Len
author_rank: Frequent Contributor
timestamp: April 17, 2014, 04:58:50 pm
content: Every child's dream.Quote from: electronics man on April 17, 2014, 04:57:07 pmHe... never mind, I'm gonna make you click the link yourself.

author: electronics man
author_rank: Frequent Contributor
timestamp: April 17, 2014, 05:05:01 pm
content: Yeah through the prize hole, but how did people not notice him going In?

author: nihilism
author_rank: Regular Contributor
timestamp: April 18, 2014, 04:03:09 am
content: Don't know about there, but in Australia 20 people probably would have noticed and just walked past. "Not my problem."

author: SeanB
author_rank: Super Contributor
timestamp: April 18, 2014, 08:48:32 am
content: Bowling alley, they probably do not even know the vending machine is there, unless they have small kids.

author: Stonent
author_rank: Super Contributor
timestamp: April 19, 2014, 03:43:17 pm
content: Oooooh the clawwwww! (Toy Story)

author: Stonent
author_rank: Super Contributor
timestamp: April 19, 2014, 03:43:55 pm
content: But did he get a flipping iphone?

author: electronics man
author_rank: Frequent Contributor
timestamp: April 19, 2014, 04:32:39 pm
content: Quote from: Stonent on April 19, 2014, 03:43:55 pmiphone case they never put real iphons in those things

author: firewalker
author_rank: Super Contributor
timestamp: April 19, 2014, 05:47:51 pm
content: There is a cctv video showing a child entering such a machine.Alexander.

author: firewalker
author_rank: Super Contributor
timestamp: April 19, 2014, 05:50:33 pm
content: Found it!Alexander.

author: Stonent
author_rank: Super Contributor
timestamp: April 19, 2014, 08:49:23 pm
content: Quote from: electronics man on April 19, 2014, 04:32:39 pmThis was what I was referring toUnfortunately it didn't last very long:
rigol ds1052e to ds1102e - Page 1
Forum section: electronics / general

author: Aigars
author_rank: Regular Contributor
timestamp: April 19, 2014, 10:44:53 am
content: hi. i know, samone can help me. i have a ds1052e skope. i ned flash in freware from ds1102e and make may skop to the 100mhz.soft new inside 04.01. hu can help me get soft an explane how beter reflach.

author: Simon
author_rank: Unknown
timestamp: April 19, 2014, 11:36:53 am
content: DO NOT DOUBLE POST!:https://www.eevblog.com/forum/testgear/rigol-ds1052e-29888/
Keeping your capacitors warm and toasty - Page 1
Forum section: electronics / general

author: c4757p
author_rank: Super Contributor
timestamp: April 18, 2014, 09:35:48 pm
content: Apparently, this was acceptable at Tektronix in nineteen ninety-whenever the TDS-380 was made:https://www.dropbox.com/s/2hxl397ri6v8ckp/IMG_20140418_150832.jpgYep, he's 85C-rated, and they gave him a couple heaters just to make sure he's warm and comfy. Why that couldn't go in the empty space above is beyond me...https://www.dropbox.com/s/i79cmha0pvfu60m/IMG_20140418_155301.jpgLook at the discoloration on the corner. Not sure I'd do that to a capacitor that's supposed to be rated for 1kV, god knows what's actually across it...https://www.dropbox.com/s/n4botvupwvkb6m7/IMG_20140418_150858.jpgAnd just in case this one wasn't close enough to the heat sink...

author: AlfBaz
author_rank: Super Contributor
timestamp: April 18, 2014, 09:46:07 pm
content: ...adding to that nearly all old tek scopes suffer from leaking caps who's gunk corrodes tracks on outer andinnerlayers

author: c4757p
author_rank: Super Contributor
timestamp: April 18, 2014, 10:01:48 pm
content: In the interest of fairness, this power supply was not designedbyTektronix, onlyforTektronix. It's still a turd, though

author: AlfBaz
author_rank: Super Contributor
timestamp: April 18, 2014, 10:21:01 pm
content: Maybe heat has only recently become a concern due to climate change. Back in the nineties we were golden but as ambient temperatures have risen...

author: tom66
author_rank: Super Contributor
timestamp: April 19, 2014, 01:42:35 am
content: How hot do those heatsinks run? What about the resistors? You'll probably find it's not particularly hot so it's not a major issue.

author: David Hess
author_rank: Super Contributor
timestamp: April 19, 2014, 02:04:08 am
content: Quote from: AlfBaz on April 18, 2014, 09:46:07 pmThat is a problem limited to early Tektronix oscilloscopes which used surface mount aluminum electrolytic capacitors like the late 24xx series and early TDS series. I suspect either bad early surface mount capacitors or contamination of the capacitors by the wash process after soldering.

author: c4757p
author_rank: Super Contributor
timestamp: April 19, 2014, 02:29:54 am
content: Quote from: tom66 on April 19, 2014, 01:42:35 amProbably notthathot on #1 and #3, you're right. It makes me uneasy, though. And the film cap in #2 hasdefinitelysuffered some real thermal abuse, which makes me less likely to trust the thermal design of the rest of it...(You can't really make it out in the photo, but it's been heated enough that it's very slightly beginning to crack. It was directly contacting the sink; I bent it forward to look at it.)Quote from: David Hess on April 19, 2014, 02:04:08 amI've been lucky enough to avoid those problems, thankfully, having owned scopes in both series.

author: TMM
author_rank: Frequent Contributor
timestamp: April 19, 2014, 08:39:52 am
content: Quote from: tom66 on April 19, 2014, 01:42:35 amEven if it isn't scalding hot, it will still dramatically shorten the lifespan of the capacitor.
MOVED: General Advice for Decapitators - Tripp Litely - Page 1
Forum section: electronics / general

author: GeoffS
author_rank: Unknown
timestamp: April 19, 2014, 03:01:49 am
content: This topic has been moved toProjects, Designs, and Technical Stuff.https://www.eevblog.com/forum/index.php?topic=29960.0
free block diagram softwere - Page 1
Forum section: electronics / general

author: electronics man
author_rank: Frequent Contributor
timestamp: April 18, 2014, 04:46:39 pm
content: does any one know of a free block diagram softwere for electronics?, i cant seem to be able to find one

author: mwilson
author_rank: Contributor
timestamp: April 18, 2014, 05:02:46 pm
content: Do you have any specific requirements that would make it "block diagram software" instead of just any drawing application that can draw labeled boxes with arrows/lines between them? Seems like any Visio-like software would suit your needs. There are lots of free online options (www.lucidchart.comor the Google Docs drawing module). If you're looking for an offline application, OpenOffice has a drawing module that is like Visio. If you're more Linux-oriented, XFig is a classic vector drawing application that has often been used for electronics drawing.

author: Gribo
author_rank: Frequent Contributor
timestamp: April 18, 2014, 09:02:11 pm
content: Diahttps://wiki.gnome.org/action/show/Apps/Dia?action=show&redirect=DiaIs also a free alternative, similar to Visio.

author: ajb
author_rank: Super Contributor
timestamp: April 18, 2014, 11:30:42 pm
content: yEdis one I've used. Never used Visio so not sure how it compares, but it does a pretty good job with flow charts. My only complaint is that it doesn't really handle hierarchical (blocks within blocks) charts as well as I'd like, but that's easily dealt with.
Never knew how to solder before I had a dutch boy... - Page 1
Forum section: electronics / general

author: ivaylo
author_rank: Frequent Contributor
timestamp: April 18, 2014, 06:36:52 am
content: ... of course accompanied by Nocorode soldering paste. Who came up with these brands? Any idea how old they may be? Found them in a San Francisco house built in the 1910s.

author: SeanB
author_rank: Super Contributor
timestamp: April 18, 2014, 08:07:06 am
content: Well, after 1926, probably sometime before the 1950's.the company was taken over in 1998.

author: N2IXK
author_rank: Frequent Contributor
timestamp: April 18, 2014, 08:03:21 pm
content: Dutch Boy brand much better known for paint (see logo), but as they were owned by the National Lead Co. (Lead was once a common paint pigment), it would make sense that the parent company also made solder. Probably used the DB brand to increase sales to folks familiar with the paint. The brand dates to 1907:http://en.wikipedia.org/wiki/Dutch_Boy_PaintNot sure why you would use NoKorode paste flux with rosin core solder, though...

author: 6E5
author_rank: Regular Contributor
timestamp: April 18, 2014, 08:45:26 pm
content: It's 50/50 solder so it has to be pretty old. I want to guess pre-WWII or late 40's as it only says Radio and Electrical Work. Soon after the war was the TV boom, and most manufactures would have noted that in their products.

author: Shock
author_rank: Super Contributor
timestamp: April 18, 2014, 09:04:59 pm
content: They used lead to seal tins in the early 1900's as well with big ass soldering irons.So if you made tins you used a lot of solder.

author: Fank1
author_rank: Regular Contributor
timestamp: April 18, 2014, 10:18:29 pm
content: It's all plumbing solder, for copper pipes.I still have some nocorode.

author: jancumps
author_rank: Unknown
timestamp: April 18, 2014, 10:51:57 pm
content: But it says for radio use.

author: N2IXK
author_rank: Frequent Contributor
timestamp: April 18, 2014, 11:02:29 pm
content: Yes, radio and electrical use. At one time, building wiring used soldered and taped splices. Those pretty much went away (good riddance) with the invention of the wirenut.You wouldn't use rosin core solder for soldering pipes or for sheet metal work.

author: Tris20
author_rank: Regular Contributor
timestamp: April 19, 2014, 01:10:43 am
content: Sell it to a museum

author: Rory
author_rank: Frequent Contributor
timestamp: April 19, 2014, 01:12:01 am
content: The Nokorode tin brought back some memories. First job out of tech school always had one of them on the bench.Looked it up online, still being sold but now in plastic tubs instead of the old fashioned tin.
View all unread/new messages - Page 1
Forum section: electronics / general

author: migsantiago
author_rank: Frequent Contributor
timestamp: April 18, 2014, 05:36:53 pm
content: Hello!Is there a link to view all the unread/new messages that were posted since my last visit?Thanks!

author: liquibyte
author_rank: Frequent Contributor
timestamp: April 18, 2014, 05:40:14 pm
content: You're kidding right?https://www.eevblog.com/forum/unread/

author: migsantiago
author_rank: Frequent Contributor
timestamp: April 18, 2014, 05:42:57 pm
content: Thanks! I couldn't find it, sorry.