This circuit, for vehicles with a 6 V battery, was found in the 1964 RCA transistors manual. Transistor 2N3054 can be replaced by a TIP41.
This circuit can be used to detect the signals from the previous circuit or from any radio...
The purpose of this circuit is to maintain the polarization voltage of the base of a transistor at -1.8 V,...
This circuit is both a signal injector and a signal follower. A key selects the operating mode. The...