Dumont RA113 "Burlingame" restoration

[HighHopes]

Hi 88,

I think I am getting this. With a capacitor in the grid circuit, the charge is held to a level depending upon the amplitude of the ac signal, charging only on the positive swings. So you get the envelop / detected waveform on the grid.

AND / BUT, the mixed radio frequencies still appear on the plate.

Horray! I got it.

Thanks for your patience.

Steve

[old_coot88]

BOOYAH !!