New project, ESR tester.

Got pcb's in today.
Built one up and calibrated it to 47R resistor.
Series resistor is 47r so 47r in place of cap gives 2.5 volts AC out.
This gives 1.25 volt peaks out of precision rectifier.
Works fine.

Tested with some lower resistors too and they came up fine.
Sadly I dont have any bad capacitors to test.
esr.jpg

esr2.jpg
 
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