[volt-nuts] Practical power supply noise testing

[John Ackermann N8UR]

I have several supposedly low noise bench power supplies that I want to check out.  They seem to work well but are quite old, so of course one wonders about the caps, etc.

Can someone suggest a practical test regime to verify power supply DC noise performance?  Preferably one that doesn't require building up custom low noise amps?

Thanks!

John