Multi Tube Amplifier (T446E)

Obtained in MIT documentation this circuit uses several tubes to obtain a large gain in the amplification of small signals.

2-transistor LC oscillator (CB22388E)
This circuit was found in English documentation from the 90's. Transistors are general purpose types....
Precision Rectifier (CB24972E)
This instrumentation circuit is from the June 1986 issue of Radio Electronics magazine. Equivalent...
Audio Remote Control (CB24138E)
This is an interesting idea that we found in the May 1971 issue of Radio Electronics magazine. It can...