>
So, you need a controlled DC power supply capable of supplying up to about
3-400 volts and capable of withstanding a short across its terminals.
On second thoughts, the requirement to withstand a short circuit is not
neccesary, a high voltage resistor in series with the capacitor under test
will suffice.
Fundamentally, there are 2 possible failure modes:
1. short circuit -- probably really breakdown of the insulation, so high
voltage rig required to test. There really is no alternative.
2. Open circuit. It is quite possible for a modern digiital multimeter to
have a capacitance measurement option. Look for near-zero capacitance.
Since you need to look for both failure modes, you have to have the high
voltage test rig.
I go back to my original assertion, if it hasn't failed, don't replace it!
Simon
>
---
Simon Matthews MailTo:simon_matthews@avanticorp.com
'57 MGA
|