This 6-tube two-channel amplifier was found in an American documentation from 1947. The circuit is two-channel with a separation of bass and treble.
The previous circuit (CB5050E) triggers when the temperature exceeds the limit set on the...
Found in a 1960s Electronic Design, this circuit provides a signal from the sensing of an analog...
We found this sensitive high input impedance voltage amplifier in the November 1970 Radio...