This circuit is from an Electronics World of 1968. The transistors are of the time and the power is supplied with a voltage of 40 V. The circuit is high fidelity.
This circuit can be used in alarms, data links or áudio links using IR radiation. The circuit is...
The figure shows the basic configurations for unijunction oscillators. They are relaxation...
This circuit switches on an external load after a certain interval given by the capacitor. The...