We found this circuit in a 1966 US documentation. It simulates a variable capacitor that can vary capacitance from 1,000 to 1. Transistors are general purpose types.
This circuit is intended for charging 12 V Nicad batteries, which corresponds to 10 common...
This circuit for discharging NiCad batteries limits the current to a value that can be adjusted in the...
This current-limited circuit was found in a Popular Electronics from the 90's. ...