Transistor Tester (CB21956E)

This transistor tester was found in a publication by Gernsback from 1960. The circuit can be used with current transistors.

Vibrato Circuit (CB24523E)
The purpose of this circuit found in the September 1977 issue of Radio Electronics magazine is to...
200 mA source (CB18935E)
This stabilized source can supply currents up to 200 mA with the indicated transistor or 500 mA...
Voltage Controlled Function Generator (CB18882E)
This circuit uses unusual operational amplifiers, but equivalents can be tried. FETs can also be...