This circuit was found in an Electronics World of 1968. The transistor can be any general purpose and the double T must be set to R3 for the desired effect.
The purpose of this 1965 Radio Electronics circuit is to help observe cycloid waveforms on an...
Indicated as a joke or challenge this circuit shows how it is possible to control two lamps using...
This circuit was found in an Argentine Radio Escuela Gráfica magazine published in the 1970s. The...