Reply 80 of 93, by AppleSauce
mockingbird wrote on 2021-10-14, 13:40:AppleSauce wrote on 2021-10-14, 13:26:
Generally speaking from what i gather on the psu, the esr meter seems to say that anything with a UF in the hundreds or thousands are low esr and the and anything less than that is just general purpose caps??
Does that sound right?
Bigger caps have lower ESRs by the nature of their manufacture (don't ask me to explain why - Better ask Wester547 over at badcaps)... So while it's normal to have something like a 5mm 10uF cap test at between 1 to 5 Ohms, 1 Ohm on something like a 10x20mm cap would be greatly suspect.
Keep in mind with the ESR meter that some of the caps you're replacing might test fine, but you don't test for other things with it like leakage current for example, so it's best to replace everything.
The meter does show Vloss , would that be leakage?