hybridfree/eevblog-posts huggingface dataset:
Anyone here got a T835 Infrared Heater rework tool? - Page 1
Forum section: electronics / general

author: daedalus
author_rank: Regular Contributor
timestamp: June 02, 2011, 11:30:29 pm
content: I was looking on ebay for a new hot air rework unit and stumbled across some relatively cheap IR rework handheld tools. No clue who makes it (its clearly chinese built), its just listed as T835 heater. I was just wondering if anyone else has bought one of these? Are they any good? Price wise its not much of a step up.

author: tnt
author_rank: Regular Contributor
timestamp: June 03, 2011, 03:03:58 pm
content: Here's a tour of their factory:And the guy who make it arehttp://www.puhuit.com/I've been considering buying some of their stuff for a while. It's pretty cheap and finding a good oven (with 4 IR elements that heat fast) proved a bit hard here so I may save myself the trouble ....
Atten ATF20B 20MHZ Function Generator - Page 1
Forum section: electronics / general

author: RCMR
author_rank: Frequent Contributor
timestamp: June 03, 2011, 07:44:10 am
content: Anyone had any experience with the Atten ATF20B 20MHZ Function Generator?It's just turned up at GoodLuckBuy and has caught my eye :-)

author: Hideki
author_rank: Frequent Contributor
timestamp: June 03, 2011, 08:22:22 am
content: It looks fancy indeed with that color display, but note that the outputs only have 8 bit resolution.

author: saturation
author_rank: Super Contributor
timestamp: June 03, 2011, 10:43:25 am
content: A bit expensive for an FG, between Atten and Rigol, Rigol has a better rep and they are similarly priced for the Rigol 1022 arb and function generator.
Saleae Logic/Logic16 Product Review & Teardown  - Page 1
Forum section: electronics / general

author: Hugoneus
author_rank: Frequent Contributor
timestamp: June 01, 2011, 04:08:02 am
content: Dear EEVbloggers,In style of Dave, we have started a website dedicated to electrical engineers, students and hackers. As our first episode, we have reviewed the brand new Saleae Logic16 logic analyzer. The video review also includes a teardown. We hope to produce a new video every week with topics ranging from analog circuit design, product reviews and teardown, testing tutorials and more. The website is not-for-profit and ran by a few of us as a hobby. Please leave a comment, visit our YouTube channel and join the community forum!Please visit us at:http://www.TheSignalPath.com/

author: EEVblog
author_rank: Unknown
timestamp: June 01, 2011, 04:22:19 am
content: Nice work, and good luck with the blog, I hope it work for you.Good to see others entering the field.I'm the first subscriberDave.

author: Hugoneus
author_rank: Frequent Contributor
timestamp: June 01, 2011, 04:41:00 am
content: Thank you Dave for your kind words. I have followed your work since your first blog video and you have inspired us to devote ourselves to this project. I hope we can chat again soon.

author: insurgent
author_rank: Regular Contributor
timestamp: June 01, 2011, 05:48:09 am
content: Nice video series. I look forward to seeing more from you.The zig-zag/squiggly traces to equalize the timing to different pins was intriguing.Keep up the good work.

author: Hugoneus
author_rank: Frequent Contributor
timestamp: June 01, 2011, 12:16:49 pm
content: Thank you! There will be more, if you look at the background of the videos, I have lots of equipment to take apart!
Radio with the "antenna" coiled around the mains! - Page 1
Forum section: electronics / general

author: ivan747
author_rank: Super Contributor
timestamp: June 18, 2011, 04:56:11 pm
content: Hi! Taking apart a radio clock to change the headphone plug I noticed a wire coiled around tue mains wiring. Following it got me into a PCB pad called "Ant", near a very nastyly constructed FM radio module. Isn't this extremely dangerous? Will this affect the radio with mains hum?I attached some photos.Cheers,Ivan

author: Zero999
author_rank: Super Contributor
timestamp: June 18, 2011, 05:07:21 pm
content: It's certainly not a good idea for good reception but I don't see how it's a safety or hum problem.FM radio frequencies are 2 million times as high as mains so no mains hum should get through the RF filter and the mains lead is double insulated so it's not a shock risk.

author: kaptain_zero
author_rank: Regular Contributor
timestamp: June 18, 2011, 05:08:17 pm
content: I suspect they decided to pick up FM freq. transmissions using an inductive pickup around the mains wiring with the mains acting as the antenna. There should be a separate AM ferrite rod antenna if it is AM/FM. The FM portion would not be affected by the 50/60hz hum entering the antenna hookup... the AM portion WOULD. I am also assuming that the mains wiring and the inductive loop are both insulated where they are next to each other so it would seem to be typical of this type of device.RegardsChristian

author: ivan747
author_rank: Super Contributor
timestamp: June 18, 2011, 05:14:43 pm
content: AM picks up lots of hum. I knew it was mains, but didn't knew the antenna was literally coiled around mains wiring. Ah well, who listens to AM these days anyway...

author: Zero999
author_rank: Super Contributor
timestamp: June 18, 2011, 05:37:17 pm
content: Actually the mains hum on the AM is caused mainly by harmonics of the mains frequency rather than 50 or 60Hz itself. The FM band is far too high up to be affected by even the highest harmonics.
help me to finalize the hunt - Page 1
Forum section: electronics / general

author: aruna1
author_rank: Regular Contributor
timestamp: May 28, 2011, 03:58:58 pm
content: ok I relly need to finalize my hunt for an oscilloscope.I'm now fixed with a product: Rigol DS1052Eand have two shopping options.Buy from dealextremehttp://www.dealextreme.com/p/rigol-ds1052e-5-6-tft-lcd-50mhz-2-channel-digital-color-storage-oscilloscope-30573orbuy from dealexcelhttp://www.dealexcel.com/rigol-ds1052e-50mhz-band-widths-2channel-digital-oscilloscope_p363.htmlI heard that dealextreme has this sudden product unavailable thing. You order one and has to wait forever to product to become available in stocks and ship. and they don't have this live help thing that I can use to ask them whether stocks are available before make my order.But on the other hand dealextreme is pretty famous and has lot of user review.As for the dealexcel, they are not famous but I havent read any user comment saying sudden stock unavailable problem like with dealextreme. but have read bad buyer experience posted in this with rigol oscilloscope brought from dealexcel.So I'm very much appreciate if you can share your opinion and your experience with these two stores.thank youPS:I need the item within about week or two

author: aruna1
author_rank: Regular Contributor
timestamp: May 29, 2011, 04:09:21 am
content: anyone?

author: Mechatrommer
author_rank: Super Contributor
timestamp: May 29, 2011, 04:52:21 am
content: ebay?dealexcel: some people complained about long time delivery and not so good packaging

author: aruna1
author_rank: Regular Contributor
timestamp: May 29, 2011, 11:42:02 am
content: ebay is $50 expensive and give normal post.about dealexcel : I thought dealextreme is the place where we get delays

author: RCMR
author_rank: Frequent Contributor
timestamp: May 30, 2011, 12:33:23 am
content: I bought my Rigol and a logic analyzer from MIB Instruments. It cost a little more but they were really really quick to deliver and even followed up by email to make sure it had arrived and I was happy with my purchase.http://www.mib-instruments.com/servlet/StoreFrontAnother option is GoodLuckBuy.com -- I've bought a few items from them (a Fluke 17 and a bench power supply) and they've been fast and reliable.http://www.goodluckbuy.com
Rigol DS1025E original warrenty - Page 1
Forum section: electronics / general

author: aruna1
author_rank: Regular Contributor
timestamp: May 26, 2011, 10:16:39 am
content: can someone post some photoes on original warranty card you got with rigol1052E?I wonder how long is the warranty? Rigol site says 3 years deal excel says 1 year and some other suppliers says 15 months.and in case of faulty where do you send the item? is it possible to send it directly to rigol ?

author: Drirr
author_rank: Regular Contributor
timestamp: May 26, 2011, 08:11:34 pm
content: You have to send it to distributor. So in case of faulty, you have to send it to dealexcel and postage back to China is really expensive.

author: bilko
author_rank: Frequent Contributor
timestamp: May 26, 2011, 08:25:55 pm
content: If you mod your Rigol you will void the warranty anyway, wherever you buy it from. The distributor should honour the warranty (if he is still in business), the last resort is the manufacturer. Others have already said, shipping back to China is prohibitive.If you need warrantyBuy from a local distributorDon't mod the scope

author: aruna1
author_rank: Regular Contributor
timestamp: May 27, 2011, 01:57:12 am
content: problem is there is no local distributor.is there any way I can contact rigol and buy from them directly?

author: aruna1
author_rank: Regular Contributor
timestamp: May 27, 2011, 02:03:38 am
content: and I ave found some cheap deals from aliexpress.com its about $355 including shipping.http://www.aliexpress.com/product-gs/449843328-Rigol-DS1052E-50MHz-Band-widths-2-Channel-Digital-Oscilloscope-wholesalers.htmland there is one supplier that offer $278 including shipping(to sri lanka) for the scope.http://www.aliexpress.com/product-fm/445236147-Wholesale-RIGOL-DS1052E-Digital-Oscilloscope-50MHz-RIGOL-DS1052E-DS-1052E-2-Channel-wholesalers.htmlSo since I cant depend on warrenty anyway (as you guys stateted above) what do you think about above deals

author: johnboxall
author_rank: Unknown
timestamp: May 27, 2011, 07:44:37 am
content: If you don't have a chance of local warranty, just find the cheapest price you can that includes insured delivery - so if it doesn't arrive or arrives damaged you can at least claim your money back.
Rigol DS1052E from diy-buy.com - Page 1
Forum section: electronics / general

author: aruna1
author_rank: Regular Contributor
timestamp: May 25, 2011, 02:35:23 am
content: HiI found this link when searching for a rigol.it seems very good dealwhere all other places says $350 - $400 price.what is your opinion?http://www.diy-buy.com/rigol-ds1052e-50mhz-dso-1gsas-2-channel-ds-1052e-digital-oscilloscope_p6341.html

author: bilko
author_rank: Frequent Contributor
timestamp: May 25, 2011, 09:21:16 am
content: Shipping is extra. When you add shipping costs its about the same as the others

author: saturation
author_rank: Super Contributor
timestamp: May 25, 2011, 10:26:48 am
content: Yes, same as other prices when shipping is included in the price by the 'others'; plus the better among the 'other' distributors have a known reputation, and thus less risk.

author: aruna1
author_rank: Regular Contributor
timestamp: May 25, 2011, 10:41:29 am
content: Quote from: saturation on May 25, 2011, 10:26:48 amwell including shipping its about $350 and with other sellers its $350 or more without shipping charges.Can you please point me to any other place you recommend with cheap price like this?I'm low on money so $350 is my budget.plus what is the warrenty period rigol get?

author: bilko
author_rank: Frequent Contributor
timestamp: May 25, 2011, 11:20:22 am
content: Whatever the warranty is, you will have to pay to ship back to the supplier. If you buy from China the warranty isn't worth anything even if it exists. If you need warranty, you will have to buy from a local agent and expect to pay at least another $100.

author: saturation
author_rank: Super Contributor
timestamp: May 25, 2011, 11:44:47 am
content: Try:http://www.dealextreme.com/p/rigol-ds1052e-5-6-tft-lcd-50mhz-2-channel-digital-color-storage-oscilloscope-30573Are you really in Sri Lanka?If you buy directly from China you'll have no warranty locally. There is a risk your package may be damaged in transit or never arrive after you pay, see discussions on eevblog about dealextreme or dealexcel, just used the search.Quote from: aruna1 on May 25, 2011, 10:41:29 am

author: aruna1
author_rank: Regular Contributor
timestamp: May 25, 2011, 11:49:31 am
content: ya I'm from sri lanka.about local warrenty, does anyone give such warrenty? if there is a fault you have to shp it to manufacturer no matter where you buy it right?and diy-buy offer DHL for $60and $351 is including DHL charges

author: Mechatrommer
author_rank: Super Contributor
timestamp: May 25, 2011, 11:59:20 am
content: one suggestion... you better spend $50 more rather than risking $350 to oblivion

author: bilko
author_rank: Frequent Contributor
timestamp: May 25, 2011, 12:11:45 pm
content: Quote from: aruna1 on May 25, 2011, 11:49:31 amOnly a local dealer could give you warranty that is one of the reasons they charge more, else you have it to return to the supplier/manufacturer
I won a DE0-Nano! - Page 1
Forum section: electronics / general

author: alexwhittemore
author_rank: Frequent Contributor
timestamp: May 14, 2011, 02:27:29 am
content: Terasic was having a contest to give away a few of their new DEO-Nano altera FPGA boards and I won one! I'll post a review here once I actually get it and get a chance to play around.http://www.terasic.com.tw/events/DE0_Nano_Contest/

author: Teknotronix
author_rank: Regular Contributor
timestamp: May 23, 2011, 05:57:45 am
content: Congrats!What was your suggested use?

author: alexwhittemore
author_rank: Frequent Contributor
timestamp: May 23, 2011, 12:49:04 pm
content: Huh, for some reason it disappeared this morning and is back now. Anyway, some of the others seemed cool but none were especially detailed or over the top or humorous. Here's mine:QuoteOh and I'll post a full review once I get a chance from the perspective of an experienced Xilinx user. I've played with it a little but haven't gotten a chance to fool around too much yet.
Soldering Tweezers? - Page 1
Forum section: electronics / general

author: Lance
author_rank: Frequent Contributor
timestamp: May 20, 2011, 11:28:58 pm
content: I was browsing the Weller website and came across a product that came with some soldering tweezers:http://www.cooperhandtools.com/brands/weller/index.cfm?model_list=1&att_id=WEL003%20%20%20%20%20%20%20%20%20%20%20%20&att1=Soldering%20Stations%20%20%20%20%20%20%20%20%20%20%20%20&att2=Industrial%20Soldering%20StationsIt's the item at the very bottom, the WX2021. How useful is an implement like that for SMD work?

author: EEVblog
author_rank: Unknown
timestamp: May 20, 2011, 11:31:19 pm
content: Very handy if you are doing tons of SMD rework.Otherwise two soldering irons suffices and can be more flexible.Dave.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: May 20, 2011, 11:33:45 pm
content: Solder tweezers are handy if you need to pull off a lot (like dozens or hundreds) of chip parts quickly, but not much better than doing it with two irons, and not useful for much else, so in terms of value for money, a second iron is going to be useful much more often than one iron and solder tweezers (e.g. when you need to frequently swap between two tips). Unless you're expecting to spend all day picking chip parts off boards...

author: Lance
author_rank: Frequent Contributor
timestamp: May 21, 2011, 12:13:29 am
content: I'm not working with SMD components yet, so I don't think I could justify getting that station. It's just shy of $800 on digikey!This seems like something more reasonable:http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=WESD51-NDIt can do the basic stuff I'm working with, and it's fancy enough to handle more complicated work later on. Plus the price is much nicer.
BK Precision 391A  - Page 1
Forum section: electronics / general

author: Jschool
author_rank: Contributor
timestamp: May 20, 2011, 01:12:14 pm
content: Anyone have experience with this multimeter? Yeah I know I can get a second hand Fluke 87-3 for a bit less, but I can get this one new and if it has the same shortcoming as the $100 model (not indestructable like the Fluke) that's okay -- I'm not intending to use this for field tech work.

author: saturation
author_rank: Super Contributor
timestamp: May 20, 2011, 01:38:24 pm
content: I don't own this meter but know B&K's reputation is good, its spec sheet is typically accurate.391A is amanualranging DMM, pricey for the list price they want with these specs.http://www.bkprecision.com/products/model/391A/test-bench-true-rms-dmm-with-protective-rubberized-case.html
Chinese English - Page 1
Forum section: electronics / general

author: Drirr
author_rank: Regular Contributor
timestamp: May 13, 2011, 12:40:36 pm
content: https://picasaweb.google.com/lh/photo/Zmo_oZ2iTQB7oVJlg1cKMA?feat=directlinkCheck charging instructions

author: pmrlondon
author_rank: Contributor
timestamp: May 13, 2011, 01:08:19 pm
content: Bad OCR looks to be involved in this...

author: Cj1corbystarlet
author_rank: Contributor
timestamp: May 19, 2011, 02:37:37 pm
content: The charging instructions are printed on the side of the battery.

author: tekfan
author_rank: Frequent Contributor
timestamp: May 19, 2011, 07:27:35 pm
content: Well atleast they spelled charging instructions correctly.
which scope is wothy? - Page 1
Forum section: electronics / general

author: aruna1
author_rank: Regular Contributor
timestamp: May 25, 2011, 04:17:58 pm
content: see following two scopesRigol DS1052Ehttp://www.dealexcel.com/rigol-ds1052e-50mhz-band-widths-2channel-digital-oscilloscope_p363.htmlUNI-T utd2052ECLhttp://www.dealexcel.com/unitrend-utd2052cel-digital-storage-oscilloscope-bright-full-colour-lcd-2-channels_p3711.htmlfrom what I see UNI-T has large display but low memory depth comparing to rigol but its cheapshipping is $15 for bothwhat is your opinion?

author: Mechatrommer
author_rank: Super Contributor
timestamp: May 25, 2011, 06:01:13 pm
content: Rigol DS1052E

author: tekfan
author_rank: Frequent Contributor
timestamp: May 25, 2011, 08:34:07 pm
content: Yep. Rigol wins hands down.

author: Tony R
author_rank: Regular Contributor
timestamp: May 26, 2011, 01:16:46 am
content: Quote from: tekfan on May 25, 2011, 08:34:07 pmDoes anyone else find it funny that his name is tekfan and he is endorsing Rigol.However I agree, having the choose between either of the two, the winner would be Rigol.

author: aruna1
author_rank: Regular Contributor
timestamp: May 26, 2011, 02:22:16 am
content: thank you

author: vk6zgo
author_rank: Super Contributor
timestamp: May 26, 2011, 02:27:27 am
content: I don't even like DSOs but I would also say Rigol.If you ever have cause to look for low frequency noise,like hum,on a high frequency signal,you will appreciatelarger memory depth.DSOs without much memory depth lower their sampling rates as time/div is increased,with resultant aliasingproblems.A classic,standard test at TV stations was to look for hum,clamping error,etc on an analog video signal.Even the early (1990s) DSOs from such illustrious firms as HP & Tektronix failed this test.I don't have a Rigol,but from what I've read on this forum,it would pass.If all you will ever do is look at signals at or around their period,maybe the UN-T would de adequate,but you mayfind your requirements change.Or, you could buy a secondhand Tektronix analog Oscilloscope,unless you really need all the DSOs "bells & whistles".VK6ZGO

author: aruna1
author_rank: Regular Contributor
timestamp: May 26, 2011, 07:50:11 am
content: I dont like to buy a secondhand one coz they are used and has more chance of breaking down

author: RCMR
author_rank: Frequent Contributor
timestamp: May 26, 2011, 08:20:43 pm
content: Actually, most electronic devices are more likely to fail in the first few hours of operation than for some considerable time after that.

author: tekfan
author_rank: Frequent Contributor
timestamp: May 27, 2011, 02:54:31 pm
content: Quote from: Tony R on May 26, 2011, 01:16:46 amAs long as it's properly engineered I don't care what brand it is.The second thing is that memory depth is really useful, not only bandwidth and sample rate.
DVM Screen Protectors - Page 1
Forum section: electronics / general

author: stranger
author_rank: Newbie
timestamp: May 01, 2011, 06:55:40 pm
content: Hi, suspect some of you will do this already but I’ve just been adding display protection to some new Agilent DVMs bought in the recent sale, screen damage is one of the more annoying and difficult to fix things and it happens V easily. What I fitted this time were screen protectors intended for PDAs, happened to use kindle ones as one kindle protector (9cm x 12 cm) could be cut for four DVM screens. I suspect there is nothing particular about the protectors or supplier I went for :http://www.7dayshop.com/catalog/product_info.php?cPath=777_12&products_id=111142]http://www.7dayshop.com/catalog/product_info.php?cPath=777_12&products_id=111142The ones supplied had the brand name ‘Screate’, each screen came with protective film both sides and the rear of the protector has a low tack adhesive a bit like Post-it notes. The protector is a resilient high gloss plastic and they are not detectable at first glance when fitted. To make things more obvious for a picture I fitted one cut diagonally as a triangle to left lower side of this DVM, other than the reflections around the diagonal cut there is no real difference between the visibility of the protected and unprotected screen areas :Uploaded withImageShack.usThe protectors are strong enough to resist most casual damage and are easily peeled off and changed for pennies when you do finally scratch them rather than the LCD.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: May 01, 2011, 07:19:21 pm
content: Man you got scammedNext time ask me about an source of getting those ..7 Pounds for 10 .... Oh my ..still laughing

author: saturation
author_rank: Super Contributor
timestamp: May 08, 2011, 05:30:12 pm
content: If you really need a screen protector, just get some scotch or packing tape and put them across the screen. In 23 years of using DMM, its rare to really scratch the meter face to something horrible.I only used screen protectors on the writing surface on my Palm PDA [ which tended to get badly scratched from the stylus] it wasn't a reading surface but the scotch tape worked well, just gummy to remove and needs cleaning when it wears out.
APPA703,VP-5260A,DM-6243,BM566A,BM344,UT70B - Page 1
Forum section: electronics / general

author: Drirr
author_rank: Regular Contributor
timestamp: May 01, 2011, 08:25:01 am
content: Hi, I take a few internal photos of some instrumentsAPPA703, LCR metter with basic accuracy 0.2%, 4W measuring, 100Hz-100KHzhttps://picasaweb.google.com/cada.david/APPA?feat=directlinkOldschool japanese oscilloscope VP-5260A, 10MHz BW, Excelent sharp screen.https://picasaweb.google.com/cada.david/VP5260A?feat=directlinkDM-6243 LCR metter, awful blue backlight. "Wonderful" solder joints.https://picasaweb.google.com/cada.david/DM6243?feat=directlinkOscilloscope BM566A - made in czechoslovakia 2x120MHz, huge scope with small screenhttps://picasaweb.google.com/cada.david/BM566A?feat=directlinkBM344 Vacuum tube RC generator 20Hz-1,4MHz - made in czechoslovakiahttps://picasaweb.google.com/cada.david/BM344?feat=directlinkUT70B - autorange multimeterhttps://picasaweb.google.com/cada.david/UT70B?feat=directlink

author: tekfan
author_rank: Frequent Contributor
timestamp: May 01, 2011, 12:44:55 pm
content: Wow that japanese scope has a really sharp trace. Also like the really long shaft extenders for the intensity, focus and scale illumination potentiometers.The Czechoslovakian scope has a reason to have such a small CRT. It's much easier to increase the writing speed of the CRT by just reducing the size of it.

author: saturation
author_rank: Super Contributor
timestamp: May 09, 2011, 08:18:23 pm
content: Welcome and thanks for Great photos!

author: david77
author_rank: Frequent Contributor
timestamp: May 11, 2011, 11:35:02 am
content: Thanks for the nice pictures.I especially like the Tesla scope. Looks very neat & tidy inside.Now I know where the green resistors with printed on values - of which I got a 1kg bag in ~1993 - come from.

author: Drirr
author_rank: Regular Contributor
timestamp: May 11, 2011, 05:11:56 pm
content: david77Yes, these green resistors like TR191 TR192 etc were produced in Czechoslovakia by Tesla.They are low inductance high stable types, but when you are soldering them too long, they fall apart.Datasheethttp://katalogy.ic.cz/rezistor.php
Amprobe 37XR-A - standard test leads now have removable probe shrouds - Page 1
Forum section: electronics / general

author: pmrlondon
author_rank: Contributor
timestamp: May 06, 2011, 09:28:28 am
content: My new multimeter arrived this morning, and I noticed that only the very tip of the probes was visible.On closer inspection, there are shrouds screwed on to the alligator clip threads. I wondered how I was to use the clips, at first. Hadn't heard about these shrouds before.From the testing I have done, it seems fine. Not tried AC current - rarely use that through the meter anyway as I also have a clamp probe - or measured anything sensible capacitance or inductance wise, but I am sure I will soon.One thing I only half expected... error beep when connected to current terminals even covers wrong terminal for selected current range.

author: saturation
author_rank: Super Contributor
timestamp: May 08, 2011, 06:04:13 pm
content: Great! Can you give us photos and a detailed review, if you can? Thanks and enjoy.

author: pmrlondon
author_rank: Contributor
timestamp: May 09, 2011, 09:39:59 pm
content: Well, of course, reviewing the whole meter would be a bit superfluous, as Dave did such a good job of it in episode 6. There are no significant changes that I have found - it even looks the same.What I saw of the test leads when I unpacked it:It turns out they are fitted with removable shrouds.These leads are clearly marked, on the probe handles, with their part number.These leads are rated without the shroud...... but seemingly rated higher with...They are CE marked, as indeed I think they would have to be here...Finally for pictures, three views of the rating on the lead.I have now tried out the capacitance and inductance functions and am quite impressed. The only thing I don't like and will probably never use is the "HOLD" function, as it is simple "push hold" and not "touch hold" or anything equally useful. However, on the whole, my verdict is the same as Dave's.

author: gobblegobble
author_rank: Regular Contributor
timestamp: May 09, 2011, 10:27:10 pm
content: Quote from: pmrlondon on May 09, 2011, 09:39:59 pmIt's one of the newfangled "safety features" they stuff down our throats. You can't manufacture/sell CAT III/IV cables anymore with too much exposed metal so either do it like that, or in a more elegant approach Fluke has taken to:https://www.eevblog.com/forum/index.php?topic=3306.0

author: saturation
author_rank: Super Contributor
timestamp: May 10, 2011, 12:28:23 pm
content: Thanks for the photos. Those test leads are interesting, got me looking at the new Fluke retractable shroud TL175 leads.
Retro teardown - Precision Gold WG021 (multimeter) - Page 1
Forum section: electronics / general

author: pmrlondon
author_rank: Contributor
timestamp: May 07, 2011, 08:22:59 pm
content: There is camera shake on some of these - not a lot I can do about it - I made several attempts.I was planning to try to repair this malfunctioning multimeter, but it fell apart in some more ways as I was attempting to - but I did take photos of the teardown. First, a description of the meter. It is a 4000-count manual ranging meter, capable of current up to 20A - though what its maximum continuous current is, I never knew - with capacitance and inductance (using a front panel socket), as well as hFE(!), logic and frequency, as well as all the usual stuff. Non-latched continuity - that could sound rough, but it worked. It had MAX hold - a little better than simple hold which is what my new Amprobe has but not as good as touch hold. The yellow holster you can see was an optional extra - but one I always had.Over the years, the foam strip on the battery cover fell off. No great problem. I also have to say the tilting bail on this meter never let me down in any way. The cover is held on by two captive machine screws - yes, this meter has metal threaded inserts.The battery compartment also gives access to the two HRC fuses - a 500mA and a 20A. There is also a space by the battery for a spare 500mA fuse. Some components can also be seen, including one socketed IC - did they expect such trouble with that as to need to put it socketed in the battery compartment?The rest of the case was basically clipped together - easy to open. The components are mostly through-hole, but with some surface mount components.One long wire link seems a bit crazy, but not bad on the whole.There are no MOVs in this meter, but there is a PTC.A close-up of the socketed chip - not one I recognise.The components near the top of the board include a 4000-series.The back of the case has foil shielding and the buzzer.On the front of the board, typical arrangements for range switching - lots of it due to manual ranging. Note the split, somewhat shrouded inputs.The range switch has 9 contacts, and there are two buttons - one for the MAX hold soft switch and one for the mechanical AC/DC switch. The knob is not held in with the board out and depending on ball bearings to make it work well.So, there's my first teardown.

author: Unknown
author_rank: Unknown
timestamp: May 07, 2011, 09:25:16 pm
content: The JRC072D is a TL072 (dual op-amp) variant, I think. Possibly for the AC or buzzer function.

author: saturation
author_rank: Super Contributor
timestamp: May 08, 2011, 05:53:48 pm
content: Great job! Its appears as a well made DMM for its time. It doesn't have the spark gap spacings on the PCB which is added for safety for high voltage transients. If you repaired it to working order, and don't use it only at most to CAT II levels, it could serve as a backup meter, but retiring it is also an option. It has served you well.
Video Baby Monitor Power - Page 1
Forum section: electronics / general

author: fsleeman
author_rank: Regular Contributor
timestamp: May 05, 2011, 08:57:42 pm
content: Recently I was given a new Samsung audio/video baby monitor. It works really well except we cannot get a signal in our room. My house is an L-shaped ranch which makes the monitor work even harder to get the signal through. Strangely enough, there are few parts in the center of our bedroom where it actually works but all in all it doesn't really work.Has anybody tried improving the signal on a device like that? Would a cantennae work in a case like that? I would rather not tear the monitor up too much since it still serves a purpose even though it won't work in the entire house. I did take it apart and saw the antennae was a thin, partially shielded wire. Unfortunately, the wire is so thin and the pads are so small unisoldering them would be pretty risky.

author: sacherjj
author_rank: Frequent Contributor
timestamp: May 05, 2011, 09:41:44 pm
content: What frequency does it transmit?There are many simple antenna hacks out there for 2.4 GHz, due to WiFi. You can get near 12 dB gain with a simple parabolic out of card stock and foil.

author: fsleeman
author_rank: Regular Contributor
timestamp: May 07, 2011, 07:08:35 pm
content: It is 2.4GHz. I am assuming the parabolic antenna needs to face the direction of the receiver.
Reviews, opinions and experience with flooring heating systems - Page 1
Forum section: electronics / general

author: greenfuture
author_rank: Newbie
timestamp: May 05, 2011, 04:33:00 pm
content: I would like to use this product ...anyone has experience with it ?http://www.flooringsupplyshop.com/blog/2011/05/03/the-facts-about-suntouch-radiant-floor-heating/

author: PetrosA
author_rank: Frequent Contributor
timestamp: May 06, 2011, 02:49:41 am
content: Can you give me some more details about what you want to do? How many square feet, floor warming or heating, wood or tile, DIY or pro installer? I've done a lot of heated floors, this brand included, but I need more information to offer any advice.
OWON Scope - Page 1
Forum section: electronics / general

author: Tony R
author_rank: Regular Contributor
timestamp: May 04, 2011, 02:57:44 am
content: So i have been looking around for a new DSO, i currently have an analog tektronix one but im looking for something that can do a little more. I have looked at Tektronix DSOs but they are out of my price range, The rigol is good but surely there has to be one better... I found a OWON brand scope for 287.00 USD is this to good to be true. I usualy dont like buying cheep equipment but if the price is right...anyways, my main question is has any one has experience or heard stories about the OWON scopes?here is the link i found to a bunch of themhttp://www.saelig.com/category/PSBEB100.htmwhat i was really looking at is the PDS5022S 25Mhz scope. so any input?

author: vk6zgo
author_rank: Super Contributor
timestamp: May 04, 2011, 04:28:01 am
content: I think you will be sorely disappointed,but if you have a specific need for some of the features of this device maybe it is for you.Remember,these cheaper DSOs do have to trade off outright performance to be ecomomical to purchase.Don't get rid of the Tektronix !! In everyday Oscilloscope use,it will outperform the OWAN,although it doesn't have some of the neat littlefeatures of a DSO.The reason people on this forum go for the Rigol,is because it is a better compromise (& it is a compromise) between outright performanceuseability & "bells & whistles"I suggest you read Dave's Blog number 86,& the comments.This Blog mainly deals with USB Oscilloscopes,but it has much useful information.VK6ZGO

author: Tony R
author_rank: Regular Contributor
timestamp: May 04, 2011, 01:52:29 pm
content: Quote from: vk6zgo on May 04, 2011, 04:28:01 amThat is what I was afraid ofQuote from: vk6zgo on May 04, 2011, 04:28:01 amI have no plans on replacing the Tektronix analog scope I own, and I was hoping to get the DSO for the "neat little features" like single shot triggering.So has anyone here have experience with a OWAN scope

author: Zero999
author_rank: Super Contributor
timestamp: May 04, 2011, 05:47:12 pm
content: Maybe you can tweak OWAN Scopes to higher frequencies, anyone know?

author: joelby
author_rank: Frequent Contributor
timestamp: May 04, 2011, 08:28:34 pm
content: Quote from: Hero999 on May 04, 2011, 05:47:12 pmPerhaps, but they have a rather low sample rate (500MS/s in the 100 MHz model - half that of the Rigol 1052E) so it might be a bit of a waste of time.
hantek dso 1060 what do you think - Page 1
Forum section: electronics / general

author: insomniaaaaa
author_rank: Newbie
timestamp: May 02, 2011, 02:54:41 pm
content: have an option to buy this scope of a friend of mind was mainly going to use it for tv repair etc just wondering what do you guys think is or has it been reviewed

author: armandas
author_rank: Frequent Contributor
timestamp: May 03, 2011, 08:39:17 am
content: Check out this thread:https://www.eevblog.com/forum/index.php?topic=907.0There is a link to rc groups for more discussions.
Mini Box PC - Page 1
Forum section: electronics / general

author: 8086
author_rank: Super Contributor
timestamp: June 11, 2011, 07:22:00 pm
content: .

author: saturation
author_rank: Super Contributor
timestamp: June 12, 2011, 12:22:11 pm
content: We don't have much of those in the US. It looks like a laptop without an LCD. One reason to get such a desktop box is system performance is better than a laptop, and at lower cost.If you don't mind, what's its passmark rating?http://www.passmark.com/products/pt.htmThe top one is ~ 11,000. I bought my desktop box for $300 because I passmarked it to 3200, so its bang for buck and a laptop rated this much costs over $1500.http://www.cpubenchmark.net/high_end_cpus.html
Novel solution to tradeoff number of traces and sample length.. - Page 1
Forum section: electronics / general

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: March 17, 2011, 10:57:00 pm
content: http://www.edn.com/article/512804-Midrange_scopes_feature_pivoting_displays.php

author: saturation
author_rank: Super Contributor
timestamp: March 17, 2011, 11:32:57 pm
content: NICE! Now that's a scope for Dave to review. Starts at just under $30,000

author: Psi
author_rank: Super Contributor
timestamp: March 18, 2011, 01:51:02 am
content: haha, that thing looks awesome

author: scrat
author_rank: Frequent Contributor
timestamp: March 18, 2011, 02:13:22 am
content: I don't like the trend of reducing controls (hardware knobs and buttons, which cost but are really easy and rapid during the use) and increasing screen...They should have named it "iScope", following the fashion of the moment

author: EEVblog
author_rank: Unknown
timestamp: March 18, 2011, 04:08:44 am
content: Quote from: saturation on March 17, 2011, 11:32:57 pmI wonder if they would let me take it apart?Actually, I've had Lecroy put out the feelers to me before about doing some reviews, but they were afraid my blog wasn't "professional" enough for them, even for their low end scopes.Agilent don't seem to think so, and look at the mileage they got!Dave.

author: the_raptor
author_rank: Regular Contributor
timestamp: March 18, 2011, 07:58:56 am
content: Why don't scopes give the option for an external monitor display with user configurable resolution, orientation etc. Seems like it wouldn't be hard especially with the Agilents running WinCE.Seems much more sensible than making the comparatively small screen on a scope rotatable.

author: ElektroQuark
author_rank: Unknown
timestamp: March 18, 2011, 08:10:15 am
content: I need it. Emmmmmm, I want it

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: March 18, 2011, 10:02:26 am
content: Quote from: the_raptor on March 18, 2011, 07:58:56 amBecause in Agilent's case WinCE doesn't run the display - their ASIC does. Increasing resolution would add to the ASIC cost. Interesting to see that although the 5000 and 6000 have been replaced by the 2000 /3000X, the 7000 with its larger 1kx768 display, which has pretty much the same hardware as the 6000 is still current.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: March 18, 2011, 10:04:19 am
content: Quote from: scrat on March 18, 2011, 02:13:22 amYes any scope that doesn't have seperate controls for each channel is a total pain to use. I think Tek went this way at one point but soon changed back on the next range. I need knobs!

author: firewalker
author_rank: Super Contributor
timestamp: March 18, 2011, 11:50:43 am
content: Quote from: EEVblog on March 18, 2011, 04:08:44 amI bet that the decision was made a non engineer guy...
YH-853D reviews? Opinions? - Page 1
Forum section: electronics / general

author: truhlik_fredy
author_rank: Regular Contributor
timestamp: March 12, 2011, 12:53:34 am
content: Hi guys.I intend to buy for myself better soldering station (my current one is the cheapest soldering iron inside the dimming socket). And I came across this onehttp://www.ttnet.net/ttnet/gotoprd/ID175/999/0/151303237373836373.htmhere is another link:http://cgi.ebay.ie/HOT-AIR-REWORK-SOLDERING-IRON-STATION-W-DC-POWER-SUPPLY-/370491453655?pt=LH_DefaultDomain_0&hash=item564302f0d7#ht_4160wt_936I could not find any reviews so I'm wondering if anybody here came across this device and what is thinking about it.I'm tempted because I would have use for power supply, my bench space is limited and at this country I don't have proper supply (at my home country I have 2). So this device is hot air as well. I have one, but again very cheap alternative, this one would be more sophisticated by miles. So I would upgrade all thins what I have here with one device.The device is called YH-853D (Yihua 853D) and it would be 193 euro delivered to Ireland for 3Amps power supply version (on the links is the 1Amp version I think).On one side I feel I could do better, but usually I'm often limited to what is available for me in Ireland. But still it looks like nice device and even if I would buy cheaper station and I had to buy power supply extra I would pay to much for shipping so perhaps this device is the cheapest variant from long term view point. As far I know, perhaps I'm wrong and this device is just garbage, just no reviews find out.So should I buy it, or not?Thanks Anton.

author: truhlik_fredy
author_rank: Regular Contributor
timestamp: March 12, 2011, 12:09:50 pm
content: This is different device, but I find it quite funny, not even English, but everything. I present this video exclusive for YOU!
Ham Radio - Page 1
Forum section: electronics / general

author: House91320
author_rank: Regular Contributor
timestamp: February 24, 2011, 01:57:20 am
content: is there any way to do time sharing with a ham radio antenna

author: the_raptor
author_rank: Regular Contributor
timestamp: February 24, 2011, 06:21:57 am
content: Yes. There are online enabled transcievers that you can sign up for (provided you are licensed) to operate. I am going for my license this weekend so mostly I have just been listening onwebSDRwhich allows a lot of people to license to one antenna.

author: sonicj
author_rank: Frequent Contributor
timestamp: February 26, 2011, 10:45:09 pm
content: have you looked for local clubs?

author: updatelee
author_rank: Contributor
timestamp: March 10, 2011, 02:39:46 am
content: I second local clubs, our club here in Edmonton has many antenna's and transeivers you can use as a club member.

author: sonicj
author_rank: Frequent Contributor
timestamp: March 11, 2011, 03:44:58 am
content: Quote from: updatelee on March 10, 2011, 02:39:46 amditto
Toroid ISB-100W Isolation Transformer  - Page 1
Forum section: electronics / general

author: insurgent
author_rank: Regular Contributor
timestamp: May 23, 2011, 05:54:22 am
content: I just purchased one of these on Ebay. It's a 1000VA, medical grade, 9 outlet, 120/240 V for about $85USD + $25USD shipping. These things list for $560 new so it seemed worth a shot!Nice aluminum enclosure, fairly small (approx 4 in tall, 8 in wide, 12 in long) and weighs in at 22.6 lbs (apologies in advance to my European brethren for the archaic measurement units). Held together with Torx screws and I didn't have an exact match so the actual screws are probably 1 size greater than these: Sides 8 x T15 and top 1 x T27.Good thing I used the meter on it first to test that all the outlets were working: The unit was set to 240V output!Attached are a few pictures for your entertainment. If you are looking for one, the guy has 5 left, just search EBay.

author: Zero999
author_rank: Super Contributor
timestamp: May 23, 2011, 04:25:17 pm
content: It looks like you've got a good deal.The output is floating which is exactly what's required for working on a test bench.

author: saturation
author_rank: Super Contributor
timestamp: May 24, 2011, 12:26:56 pm
content: Thanks for the headsup, I could use of these.

author: sacherjj
author_rank: Frequent Contributor
timestamp: May 24, 2011, 02:15:45 pm
content: For those wanting one, this is the link:http://shop.ebay.com/i.html?_nkw=isolation+transformer&_sacat=0&_odkw=1000VA+isolation&_osacat=0&_trksid=p3286.c0.m270.l1313#http://cgi.ebay.com/Toroid-ISB-100W-Isolation-Transformer-115-230V-/220786389040?pt=LH_DefaultDomain_0&hash=item3367e4f030&vil=1And he only has 4 left, now.Thanks for the heads up. I've needed on of these and I didn't want to pay much more than this, but didn't expect to get 1000VA capability for the money.I knew I bought a bunch of those AC interface pig tails from something a couple years ago...
Atten ADS1062CAL 60Mhz Digital Storage Oscilloscope 7" Wide Screen LCD - Page 1
Forum section: electronics / general

author: jens
author_rank: Newbie
timestamp: January 10, 2011, 08:23:25 am
content: HoursCooling: fan forced coolingHumidityWork: 85% RH, 40 ?, 24 HoursDoes not work: 85% RH, 65 ?, 24 HoursHeightWork: 3000 mDoes not work: 15,266 mMechanical SpecificationsSize: 339mm * Width 110.5mm * 148.5mm highWeight: about 2.4kgColor TFT LCD display, waveform display is more clear and stable;Extensive trigger functions: edge, pulse, video, slope, alternate;Unique digital filter and waveform recorder;Pass / Fail function;• 32 automatic measurements;• 2 set of reference waveforms, 20 groups of common waveforms, 20 groups of settings within the store / recall; support waveform, set, CSV and bitmap files U disk external storage and recall;Manual, tracking, automatic cursor measurement function;Channel waveform and FFT waveforms at the same time split-screen display;Analog channel waveform mesh screen brightness and brightness adjustable;Pop-up menu display mode, the user operation more flexible, natural;Rich interface display style: classic, modern, traditional, simple;Multilingual interface display, the English online help system;Standard interface: USB Host: Support U disk U disk storage and a system through software upgrades; USB Device: support for PictBridge direct printing and PC connection with the remote control; RS-232.

author: Nermash
author_rank: Frequent Contributor
timestamp: January 10, 2011, 10:50:14 am
content: So, it only works between 3000 and 15266 m of altitude? Or you have to be specifically at 3000 m to take measurrement:)

author: PeterG
author_rank: Frequent Contributor
timestamp: January 10, 2011, 12:37:20 pm
content: I dont have a lot of work at 3000m+ altitude. As for the price ,it probably cost more for its high altitude spec

author: kedwards22
author_rank: Newbie
timestamp: March 08, 2011, 07:40:20 am
content: I bought one of these a few weeks ago and for the price, it's not bad. It does have a few software glitches and a very annoying lack of any accelerating scroll function (the vertical adjust has a wide range, but requires hundreds of turns of the knob to get there). Does anyone know if there is a software hack to up the bandwidth?

author: saturation
author_rank: Super Contributor
timestamp: March 08, 2011, 11:32:52 am
content: Have you tested its basic measurement functions, its bandwidth? linearity? noise? Right now those are more important features are unknown to most of us, than ergonomics.Quote from: kedwards22 on March 08, 2011, 07:40:20 am

author: slburris
author_rank: Frequent Contributor
timestamp: March 08, 2011, 04:11:17 pm
content: Do you feel up to opening it up and taking some photos of the insides?Scott
DSO Atten 50 Mhz with very strange sintom - Page 1
Forum section: electronics / general

author: Francirius
author_rank: Newbie
timestamp: March 09, 2011, 09:28:55 am
content: Hi!, Some time ago i was looking for a DSO, and finally i get the Atten ADS1062C. I bought from Ebay, and like a month later arrive. I'm from Chile, and i started measuring a few things, but i had an accident, I measured a circuit with no transformer in the power source (it was a switching, i think ) and i get a shortcircuit with the both "grounds" (of the circuit and from the DSO). It seems that nothing happen but the DSO started to works rare, and finally it freezes. Talking with the dealer (from korea), i could open the DSO, and following their advice i disconected the display flex. It work one time, but again it freezes and death with a white display. In the end, i could get a new oscilloscope, but i'm affraid to use it, 'cause when i turn it on, the display trembles, but it works fine for the moment.This is my experience with Atten, i would like to change it, i don't know if is normal this "tremble" in the display in the beggining.Bye, and sorry for the english, i'm from Chile.

author: Mechatrommer
author_rank: Super Contributor
timestamp: March 09, 2011, 11:51:22 am
content: replace with another brand. last night i accidentally probe unisolated circuit with my rigol too (thought the motor is low volt dc, checked with my uni-t dmm, its just mains supply, trickled and controlled by some ic circuit. the same with you, gnd circuit to gnd dso, and then walla! the circuit breaker trip. rigol still works ok i think. this is the second time happened.