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| op amp test jig |
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| quadzillatech:
Hi all,does anyone know of any plans,ie pcb layouts etc for a diy op amp test jig,a sort of go no go type of thing?,cheers Paul m3vuv. |
| ogden:
--- Quote from: quadzillatech on January 07, 2019, 10:46:22 am ---Hi all,does anyone know of any plans,ie pcb layouts etc for a diy op amp test jig,a sort of go no go type of thing?,cheers Paul m3vuv. --- End quote --- You mean something like diode checker? Like this? http://vakits.com/single-op-amp-tester-kit (just found using search) Opamps diffeer, by function and pinout, so there can't be universal "fits it all" test jig. Also test circuits to measure various characteristics of opamp, differ. Manufacturers like TI and AD provides provides unpopulated opamp evaluation boards, such as: http://www.ti.com/tool/OPAMPEVM-SOIC Hi-speed and RF amplifiers have purpose-built test jigs, such as: http://www.ti.com/tool/LMH6629SDEVAL You shall tell why you are asking and what kind of problem you are trying to solve. |
| quadzillatech:
Ive just built a 0-30 volt chineese psu kit from ebay,it doesent output,ive built it spot on,there is an opamp gets hot,i want a quick way of testing them and other op amps i have in my junk box,regards m3vuv. |
| coppercone2:
you could go through app notes that try to look at app notes that give test procedures on the specifications and try to make a one size fits all board for things like measuring bias currents etc, switch or relay controlled, but you would have problems when you have like dual op amps in the same form factor or op-amps with weird pins etc. it could end up quite complicated. |
| Zero999:
It depends on what you mean by checker? It's fairly easy to simply check the basic functionality of an op-amp, by making an LED flasher and it shouldn't be too difficult to make the circuit work with 99% of op-amps, but verifying it meets its specifications is more complex. A simple 1Hz Schmitt trigger oscillator will work with the '741, TL071, OP07 etc. but getting it to distinguish between the three is not simple. It's not possible to make a simple circuit which can spot the difference between a genuine op-amp and a fake. |
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