Ruslan_Windrivers
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can this russian go-esr-meter measure the esr of caps in circuits (I'm pretty sure it doesnt measure capacity in circuit...)
It does, actually measure caps without having to desolder them... Voltage, applied to the capacitor, is less than 0,3v so if there is any semiconductor connected, it won't affect results. (Of course, very low-Ohm resistors will, so you'll have to be avare of that, too)...
What I was trying to say, comparing to other meters working on 100KHz (from your ESR Repository ;-) ) this one uses "constant" current method so if there is any keramic caps connected in parallel with CUT (which is very common), it won't affect resulting ESR.
BTW, this project got a new development. Another guy changed a bit the original schematics, added LC meter (with extended LC ranges), also added 2-range Frequency meter - one up to 60MHz and another - up to few GHz (with proper prescaler), and VGA test signal output for testing monitors... all using the same CPU... discussion of the new article is here: **broken link removed** (in Russian).
Firmware (for different types of LCD): http://moemesto.ru/MIRON63/file/10326247/mi_esr2_8_16.zip
Additions, corrections: http://moemesto.ru/MIRON63/file/10217372/дополнение к Esr_lcf.zip
Article: http://moemesto.ru/MIRON63/file/10129718/Esr_lcf от miron63_.zip
I haven't tried to build it yet, but I most likely will... and can help with translations ;-)