The circuit is of the Motorola Linear Databook of 1990. The power source must be symmetrical and the characteristics of the circuit are given next to the diagram.
This regulator can use BD'136 as the main transistor and as a reference next to a BC548 zener. The...
In the 110 V network, capacitors of 200 V or more and in the 220 V network, capacitors of 400 V or...
The circuit shown timing the drive of a motor using an optical coupler. The diode bridge can be...