The coils of this circuit will determine the transmission frequency of this device. The circuit is from the 1960 Mullard transistor reference manual and makes use of germanium transistors.
This circuit is from a 1987 American publication called Electronics Handbook. The circuit can be...
The indicated circuit performs a slow charge of 12 V batteries maintaining a constant current of...
This ultra-simple circuit need a carbon microphone to operate. The circuit must be powered from D...