[Amps] PIC processor inside HF amp

[Patrick]

jeff millar wrote:

> The conducted emissions probably create more problems than radiated 
> because the HV probe line, Plate and Grid current lines, etc. have a lot 
> of RF voltage on them and they get connected to the PIC. Imagine the 
> currents flowing into the PIC board on one pin and out on some other 
> pins...this can definitely mess up the A/D's and even logic on the PIC.

   Just a quick thought on this part. Could you not knock the voltage 
down before sending it to the PIC and then calibrate it to the higher 
voltage for which you are testing? You would then have a lower voltage 
to measure which might mitigate some other problems. You would lose a 
little accuracy but probably still be within specifications.

Patrick KA4ZNU