EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: Dawn on August 03, 2013, 09:13:57 pm
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On the 'bay, there's been several IC testers that claim to be able to check cmos,ttl,some linear, and identify tranistors. The price is surpising low with shipping on these. They are simple boxes with a few membrane keys, a multi-line display and a ZIF socket. Has anyone had any experience with these? I need to do some bulk sorting and something like this would be a godsend if it works well.
Here's an example:
http://www.ebay.com/itm/Digital-LCD-Transistor-Tester-Detector-IC-Tester-Maintenance-Meter-PNP-NPN-MOS-/181135316354?pt=LH_DefaultDomain_0&hash=item2a2c819582#ht_2593wt_918 (http://www.ebay.com/itm/Digital-LCD-Transistor-Tester-Detector-IC-Tester-Maintenance-Meter-PNP-NPN-MOS-/181135316354?pt=LH_DefaultDomain_0&hash=item2a2c819582#ht_2593wt_918)
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I don't know about that tester, but the test function in the MiniPro TL866 is able to check a lot of IC's.
Dave has a review of the programmer here (http://www.eevblog.com/2013/01/17/eevblog-411-minipro-tl866-universal-programmer-review/).
The interesting point is if this or other testers can detect all problems with the IC, I expect that these cheap testers only do a function check of the device.
Any periodic or thermal issues will not be detected in that case.
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I don't know about that tester, but the test function in the MiniPro TL866 is able to check a lot of IC's.
Dave has a review of the programmer here (http://www.eevblog.com/2013/01/17/eevblog-411-minipro-tl866-universal-programmer-review/).
The interesting point is if this or other testers can detect all problems with the IC, I expect that these cheap testers only do a function check of the device.
Any periodic or thermal issues will not be detected in that case.
I have a TL866CS EPROM programmer and I can confirm it can test ICs (SRAM, TTL, CMOS) but regarding TTL not all the 74 family is supported for testing as well the unknown IC search function is not yet implemented.
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On the 'bay, there's been several IC testers that claim to be able to check cmos,ttl,some linear, and identify tranistors. The price is surpising low with shipping on these. They are simple boxes with a few membrane keys, a multi-line display and a ZIF socket. Has anyone had any experience with these? I need to do some bulk sorting and something like this would be a godsend if it works well.
Here's an example:
http://www.ebay.com/itm/Digital-LCD-Transistor-Tester-Detector-IC-Tester-Maintenance-Meter-PNP-NPN-MOS-/181135316354?pt=LH_DefaultDomain_0&hash=item2a2c819582#ht_2593wt_918 (http://www.ebay.com/itm/Digital-LCD-Transistor-Tester-Detector-IC-Tester-Maintenance-Meter-PNP-NPN-MOS-/181135316354?pt=LH_DefaultDomain_0&hash=item2a2c819582#ht_2593wt_918)
Has anyone been able to dig up a manual, spec sheet, or device list for these? (The IC tester, not the MiniPro!)
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Has anyone been able to dig up a manual, spec sheet, or device list for these?
Here is the device support list:
http://www.autoelectric.cn/minipro/MiniProSupportList.txt (http://www.autoelectric.cn/minipro/MiniProSupportList.txt)
Hee you can read the specs:
http://www.ebay.com/itm/USB-MiniPro-TL866CS-Universal-BIOS-Programmer-EEPROM-FLASH-8051-AVR-GAL-PIC-SPI-/221092473435
(http://www.ebay.com/itm/USB-MiniPro-TL866CS-Universal-BIOS-Programmer-EEPROM-FLASH-8051-AVR-GAL-PIC-SPI-/221092473435)
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I'm aware of the minpro, but that's not what I'm looking for. The amount of these units sold, I'm surpised nobody here has any direct knowledge of them or any reviews on websites. I didn't mean for this to turn into a minipro discussion.
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I recently got one of those cheap testers on ebay a few weeks ago and I'm still getting to know it. But so far I've been very pleased with it.
When I did a teardown I discovered that the printing on the board says it is an "ABI ChipMaster" but it doesn't quite match any of their current models.
I've never found a full device list for this device and I still haven't gotten around to throwing my extensive IC collection at it. But I've been using it off and on to test all of my opto isolator/interrupter devices along with several hundred (prolly over 1000 :-/O) SMD ICs from a couple of 2 pound Jameco IC grab bags using SOIC adapter sockets.
In that collection of prolly about 1000 SMD ICs it was able to test about half of the analog types and nearly all of the digital types. Of the half it couldn't test those were nearly all voltage regulators and SMPS chips which it doesn't test. I wish it did test them with as many of them that I have now. Testing those with what I have manually would take way too much time. |O/ :-DMM
It seems to handle most common glue logic families. 54/74XX, CMOS 4XXX, HEF 40XX, 45XX/145XX.
I've tested quite a few TTL chips but I've already found that there are a few weird holes in the devices it can test. There are a few common older Flip-Flops that it doesn't support, but other newer and less common ones, it can test. =o.O=;;
I also found that there seems to be a bug in the TTL test/ID routines. Several LS and HCT types will both ID and test as the opposite family. If you try testing them in the proper family it will fail, but test it on the other family and it will pass. My experience has been that it seems that the best way to use this device is to first use the auto-search function to have it ID the chip and then test with the type it gave you.
There were a few Op Amps that were like this too. Where they would ID and test as a slightly different number than what the actually are. And several analog types that aren't in the short list of chips for analog testing will actually test under other numbers. So, with the analog chips too, for best results you'll want to ID the DUT first and then test with what it thinks it is.
For analog chips it mostly tests a few common types of Op Amps & comparators. It will also test a few common types of display driver and interface chips as well. But, this is mostly a digital logic tester.
The Zener test seems to work fairly well up to 50V but I haven't tested it extensively yet.
I have fully tested the opto device function. It works very well and will tell you the voltage it gets from the photodiode side of the optoisolator/interrupter when you test.
It has a transistor test function, but I'll likely never use it. I have several dedicated transistor testers already.
I sort of started putting together a manual for it, but lost interest after a while as it was very easy to use aside from a few oddities.
For example, for all IC tests you put the DUT in the top half of the socket with pin 1 at the top left. Which is really nice as a lot of testers expect you to put the DUT in differently depending on the number of pins from the bottom. :wtf:
For all the other tests (opto, Zener, Transistor) you put the DUT in the bottom part of the socket.
Zener & Transistors go in the socket in the bottom of the right column. For opto devices the LED goes in the bottom left holes & the photo diode/transistor goes in the bottom right holes.
Once you get used to it this setup is very simple and consistent. I like it. :-+ =^.^=
If any one would like me to post teardown photos and/or finish the manual let me know and I'll put them up here.
If anyone has any questions about this device I'll try to answer them if I can.
BobKat
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This sets of my snake oil alarm instantly...
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Thanks for the heads up. I still haven't bought one yet, hoping to hear from someone who has.
Really appreciate your review of the units.
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This sets of my snake oil alarm instantly...
nah its legit
you need to enter model number before testing, it doesnt autodetect chips (only transistors)
but WHY BOTHER? ttl chips are $.2 and you want to waste $70 for a gizmo + your time testing those?
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This sets of my snake oil alarm instantly...
nah its legit
you need to enter model number before testing, it doesnt autodetect chips (only transistors)
but WHY BOTHER? ttl chips are $.2 and you want to waste $70 for a gizmo + your time testing those?
Sorting ICs for recycling, I'm pretty sure it pays itself off rather quickly...
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who uses recycled $0.2 parts?!?!?!?!?
you would need to recycle >400 of those, not to mention no life at all, even flipping burgers is more profitable than this. Unless you live in Philipines/Guangdong/Africa.
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I guess some people have never worked in an industry that replacement components are usually marked with proprietary house numbers instead of the generic. While cross references often carry well known part numbers from consumer equipment, those of us that work in commerical fields aren't so lucky and at the mercy of the manufacturers. Add to that companies that provide manuals with schematics and parts lists and if you try to order an active component, parts replacement is only at board level even though part numbers are assigned to each. My life would be much easier if the generic p/n's were listed. The reverse of that is I have years of inventory under house numbers and it would be nice to dispose of some of this with a generic equivelent part number.
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I guess some people have never worked in an industry that replacement components are usually marked with proprietary house numbers instead of the generic. While cross references often carry well known part numbers from consumer equipment, those of us that work in commerical fields aren't so lucky and at the mercy of the manufacturers. Add to that companies that provide manuals with schematics and parts lists and if you try to order an active component, parts replacement is only at board level even though part numbers are assigned to each. My life would be much easier if the generic p/n's were listed. The reverse of that is I have years of inventory under house numbers and it would be nice to dispose of some of this with a generic equivelent part number.
and how is that Chinese box help you? It will not automagically identify what you put in it, you will need to know beforehand what IC you hold in your hand.
Either you know compatible model number and can order $0.2 part, or you dont and this chinese gizmo wont do anything for you.
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Again. This sets off my snake oil alarm. Just looks bad and unsupportable. Even if the thing works who is going to support it and prepare for Chinglish writing. When an $.80 micro can do anything any anything designed up through 1995 can do, I mean just nooo... whyyyy..... Your time is more valuable than that!
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It seems we either have a couple of n00bs or a pair of trolls here. Anyway... =^.^=;;
Either you weren't paying attention, or I wasn't clear enough about the search function. :palm:
When using the "Search" function This device will automatically detect any of the devices that it supports and can test. I've found that it will even ID quite a few devices that aren't in the supported list. =^.^=
For those of us like myself that enjoy tearing down old electronics and re-using the parts or buying IC grab bags for cheap parts this device is a real time and money saver. Especially when you consider the time saved testing your parts.
And when dealing with boards from companies like RCA and HP where they'll use standard JEDEC/US parts but put weird part numbers on them and then not have the numbers on the parts even match the numbers in the service manuals or their own cross-references this device is a real life saver. Rather than having to spend $10 to $50 for a part from HP you can just use the 10 to 90 cent TTL part or Op Amp that it actually is. ;D
The only thing I don't like about this tester is that you can't plug it into a PC and add devices. But considering that "real" programmable IC testers typically start at $1200 US and go way way up in price I think it is good value for money for those of us that know what to do with them.
As to the value of recycling old parts, a lot of us do this as a hobby. You know, for FUN, and not to just make money. While I've earned my living in the past doing electronics repair and some design work, I've always been into electronics because I find the subject fascinating and I've always enjoyed tinkering/experimenting and working with circuits. :-/O :-DMM
(And, yes, I AM having way too much fun with the silly smileys =^.^=;;)
It has never just been about money for me. And it looks to me as if that is your mindset. If money is the only reason you're doing electronics then you're definitely both in the wrong field and in the wrong place.
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And when dealing with boards from companies like RCA and HP where they'll use standard JEDEC/US parts but put weird part numbers on them and then not have the numbers on the parts even match the numbers in the service manuals or their own cross-references this device is a real life saver. Rather than having to spend $10 to $50 for a part from HP you can just use the 10 to 90 cent TTL part or Op Amp that it actually is. ;D
Here is the conundrum: >:D
- if you need to replace your "unknown" chip, it means it is faulty...
- If it is faulty how can you test and identify it?
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And when dealing with boards from companies like RCA and HP where they'll use standard JEDEC/US parts but put weird part numbers on them and then not have the numbers on the parts even match the numbers in the service manuals or their own cross-references this device is a real life saver. Rather than having to spend $10 to $50 for a part from HP you can just use the 10 to 90 cent TTL part or Op Amp that it actually is. ;D
Here is the conundrum: >:D
- if you need to replace your "unknown" chip, it means it is faulty...
- If it is faulty how can you test and identify it?
this was my thought exactly when considering the usefulness of this device for myself.
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And when dealing with boards from companies like RCA and HP where they'll use standard JEDEC/US parts but put weird part numbers on them and then not have the numbers on the parts even match the numbers in the service manuals or their own cross-references this device is a real life saver. Rather than having to spend $10 to $50 for a part from HP you can just use the 10 to 90 cent TTL part or Op Amp that it actually is. ;D
Here is the conundrum: >:D
- if you need to replace your "unknown" chip, it means it is faulty...
- If it is faulty how can you test and identify it?
Faulty does not mean dead. It can test fine on the tester but not work in the circuit. And vice versa.
There also could be another chip on the board with the exact same weird part number. You test that one, determine what it is and then replace the one that is bad.
Not everyone has a Radio Shack down the street. Also when ordering from Digikey or Mouser, a 10 cent part may cost $5 for postage.
Using an IC tester just 5 times, could save a person the cost of the tester.
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Hello, photos of this Chinese IC Tester
(http://i.imgur.com/Gpfre5r.jpg)
(http://i.imgur.com/cwLYsHT.jpg)
IRF630
(http://i.imgur.com/aVa2jBx.jpg)
[imghttp://i.imgur.com/UeYmjvl.jpg]http://[/img]
74hc manual search
[imghttp://i.imgur.com/wc9JtBb.jpg][/img]
(http://i.imgur.com/q8lxGVT.jpg)
(http://i.imgur.com/ApXfY3M.jpg)
(http://i.imgur.com/q2bIrsS.jpg)
Optocoupler
(http://i.imgur.com/3yThuH4.jpg)
BJT
(http://i.imgur.com/rCo0c3j.jpg)
zener 7v
(http://i.imgur.com/EETocct.jpg)
zener 16v
(http://i.imgur.com/Yp5uDrL.jpg)
zener 10v
(http://i.imgur.com/1PYrNiK.jpg)
:)
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I have one of these:
https://sites.google.com/site/leapleaptronixen/ic_tester/leaper-1
with a different brand name on it (LBT-10) that I got on ebay for around $70. It works well and is useful if you have a lot of old IC's that need to be tested. It more than made up for the cost on just one calculator repair that I did on the HP-97S i/o pod. There's no schematic available for the pod and it uses a ton of HP-part numbered, 4000 series chips. While I was able to cross reference most of them, I didn't know all of them. This tester found the two bad chips, that I did have cross references on and helped identify the ones I didn't know.
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Great Job kwass, :-+
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After reading your post, i bought one from england, for now i dont want buy chipmaster and linear master, but i will do in the future. Anyone have tried to test memory chips???
I readed that some componets need capacitors between pin for stabilization otherwise u risk to have a faulty test.
http://www.capetronics.com/linearmaster_ic_tester_library.htm (http://www.capetronics.com/linearmaster_ic_tester_library.htm)
http://www.capetronics.com/Chipmaster_digital_ic_tester_library.htm (http://www.capetronics.com/Chipmaster_digital_ic_tester_library.htm)
I hope for now to have made a good choice
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Hello everyone
I got me exactly that Chinese IC-Tester some weeks ago and imho it is disappointing.
Here is a german review of the device. Don´t worry about language, the video tells a story.
http://www.afug-info.de/Testberichte/IC-Tester/ (http://www.afug-info.de/Testberichte/IC-Tester/)
Wish I had seen that before I bought that scrap.
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Hi!
Myself and several colleagues use this tester in our jobs repairing indistrials, and have found it a worthwhile timesaver, however I found it almost impossible to test surface–mount devices unless you solder them to a DIL–to–SOIC adaptor, which for the devices these units support, isn't worth the trouble – I usually replace dicky surface–mount with new if I've doubts about it!
Also the plastic case won't withstand I.P.A., flux–cleaner or foam–cleanser – I guarantee the case will disintegrate into a crazy–paving meshwork of cracks if you get this stuff on it!
Unlike the item reviewed in the teardown, mine has the mcu's type number sanded off, but at least I know what was used now for future drawing purposes!
And finally, these things have been steadily rising in price alarmingly now – they're rapidly climbing up to the £50 mark!
Whose design did the Chinese "knock off" and are there any known circuit diagrams?
Chris Williams
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Whose design did the Chinese "knock off" and are there any known circuit diagrams?
Chris Williams
The earliest thing like this I've seen was around 1982 to 1985 from Taiwan. It was a plug-in board for an Apple ][ computer from a company that called themselves 'Fairy' in the software, along with a couple of large Chinese characters that I couldn't read. The Fairy tester would check TTL, CMOS and a handful of other parts, and like this one it'd identify the unknown part if it wasn't blown. It didn't do transistors or zeners, and certainly not optos. The design was similar to this one (port expanders and a big handful of resistors, 3 resistors per pin if I remember right. I reverse-engineered a schematic for it in case it failed, as getting service out of Taiwan (then) was about as easy as getting service from China (today). It worked, and saved me the cost of the board within the first few months of use. Sorry, I didn't keep the schematics for it after the Apple and all of my 'stuff' for it went to a landfill in the '90s.
Ha! As I was writing this, I googled it and found some info on that old card: ^-^
http://www.appleii-box.de/H055_AppleIIFairyICtestcard.htm (http://www.appleii-box.de/H055_AppleIIFairyICtestcard.htm)
as well as this article on other antique IC testers: http://www.computernerdkev.heliohost.org/ictesters/index.htm (http://www.computernerdkev.heliohost.org/ictesters/index.htm)
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Tl866 and other cheap chinese programmers already have build in test function for most 4000 and 7000 logic and SRAM chips, so these standalone testers are a bit useless/outdated nowadays.