AW: Power supply musings

[Martin Czech]

> I got good results with two big diodes in parallel (opposite direction).
> No hum voltage below 0.5V will find a closed loop, but higer voltages
> will find the diodes conducting in both directions. A 47nF ceramic cap
> across the diodes ensures that the enclosure still works as RF shield.
> (Forgot to mention: The enclosure is still on earth ground. The components
> are between enclosure and signal GND.)
> 
> JH.

Good idea!
This is the way we "isolate" different supplys on our ICs.
Without a couple of LSB of our ADC will get lost (video).

m.c.