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 isolated shield is from an old documentation, making use of an operational one of the time. It...
This circuit can be used with receivers to attenuate signals that may cause interference. The...
In this circuit of an American documentation of the 90s, when the light is cut, we have the...