View Single Post
Old 29th Apr 2015, 4:29 pm   #15
Catkins
Pentode
 
Catkins's Avatar
 
Join Date: Feb 2015
Location: Chepstow, Monmouthshire, UK.
Posts: 234
Default Re: HMV 901 restoration.

Quote:
Originally Posted by FERNSEH View Post
The anode bend detector operates on the principle of biasing the detector valve close to cut-off. It follows that when a modulated signal is present at the grid of the valve, conduction takes place only on the positive half cycles of the signal waveform.
In the 20s they tended to use the bottom bend rather than the top bend obtained by operating the valve at saturation.
Catkins is offline