Explorer for all ranges (T1098E)

This circuit was found in a Radio Craft from October 1946. Power supply not shown, and tubes are 1.5V filament types.

Inverter Amplifier LM675 (CB19037E)
The National Semiconductor LM675 operational amplifier can provide up to 3 A of output current. In the...
Socket control (CB24880E)
The idea of this circuit is that when the device in SO1 is turned on, the device connected to...
Transistor Radio GE675 and 676 (CB18441E)
This transistorized receiver was manufactured in the 1960s and distributed worldwide. The diagram is...