[Johnson] Electrolytics

[Jim Brannigan]

A differential comparator plug-in (A Tek Type W) can be used to measure the 
ripple voltage.
The older Handbooks have acceptable values of ripple for comparison.

Jim

Same precautions as below


> Use a 'scope Chuck... PROVIDED that the voltage ratings of the PS do not 
> exceed the voltage ratings of the probe (presuming you're using a 10X 
> probe... or of the 'scope input if 1X. Otherwise, see what kind of AC 
> voltage you can measure using the VTVM (but the same max voltage rating 
> concerns apply.) At 20Kohms/V it may even be you could use a VOM ... I 
> never have though-and I'm not certain what the **AC** input impedance 
> might be.
>
> ///snip
>>How can an electrolytic capacitor in a power supply be tested in the 
>>circuit with the power on for partial failure i.e. AC ripple.  Scope, 
>>VTVM??
>>
>>Chuck
>>K1TLI
> ///snip