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 shows on the screen of an oscilloscope two signals alternately at a frequency that depends...
This circuit is from a Radio Electronics from August 1992. The transistor used allows the control of...
This circuit measures the strength of audio signals. We found it in an American publication from...