On 2025-04-06 11:25 AM, Jim Adney wrote:
It may not be the BEST way, but the quick and simple way is to use the same handheld DVM that you use to measure the DC voltage.
Be a little cautious with this. Some meters give you only the ripple when on AC, but some also include the DC measurement (true RMS includes DC). So if the reading doesn't change much when you switch from DC to AC, it's not telling you what you want to know. You could of course connect thru a capacitor; it takes only a little calculation to determine an appropriate cutoff frequency based on the meter's input impedance and the capacitor value.
Steve Hendrix
