I found tis circuit in na old documentation from 1958. The circuit uses germanium transistor availble that time and hard to obtain today. The circuit is indicated for phono applications using variable reluctance transducer.
This Maxim Voltage Supervisory integrated circuit can be obtained from Mouser Electronics. It has...
This circuit act
The aim of this circuit is the protection of a 2N3055 transistor, avoiding the overheat. The...