Diode Tester (CB22137E)

This diode tester was found in an English publication from the 1980s. Transistors are general-purpose types of the time.

10 W amplifier (CB9905E)
To a 16-0hm load, this amplifier provides a power of 10 W. We found this circuit in a Motorola...
Fuzz effect (CB13185E)
This distortion circuit was found in an American publication from 1970. It can be assembled with...
Bootstraped Source Follower (CB6156E)
This configuration was found in an English magazine from 1965. It is valid for any junction FET. The...