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 was suggested by Motorola in a 1980s publication. It is based on a PUT that is not a...
The purpose of this circuit is to control magnetic door locks activated by the power grid. The...
We found this circuit in an old English documentation from 1979. The circuit is very sensitive, because...