Suggested by Philips documentation from 1968, this circuit uses components from the era that can be replaced by modern equivalent types. The double transistor can be replaced by a matched pair.
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...