RickNel
Veteran Member
I'm needing to check the state of capacitors in a Sony switch-mode PSU from my Mac IIsi.
Putting the continuity tester from my DMM across them, I read resistance rising as the caps charge, then falling back to a much lower value - mostly around 100R but one or two up at 400R.
Does this tell me anything useful about ESR?
I've been looking at this DIY ESR adapter for use with an oscilloscope, since I'm not sure I want to shell out for a professional ESR meter.
Any suggestions?
Rick
Putting the continuity tester from my DMM across them, I read resistance rising as the caps charge, then falling back to a much lower value - mostly around 100R but one or two up at 400R.
Does this tell me anything useful about ESR?
I've been looking at this DIY ESR adapter for use with an oscilloscope, since I'm not sure I want to shell out for a professional ESR meter.
Any suggestions?
Rick