This circuit was found in a 80s American documentation. The zener diodes determine the points of action of each stage and the transistors can be general purpose types.
This circuit is a continuation of the previous one, serving as a protector against overloads in...
This circuit can handle 25 A unde a 32 V voltage using a hight power old transistor. This...
This circuit was found in 80's Popular Electronics. Transistors are commonly used. The...