FET Constant Current Source (CB6622E)

We found this circuit in a 1968 US documentation. The power FET is a component of the time and the current is 4.5 mA only.

| Clique na imagem para ampliar |

Full wave slave control (CB8156E)
Using SCRs, this circuit from a 1967 General Electric manual allows full wave load control with SCRs....
Sound Strength Meter (CB12930E)
This interesting circuit from a publication from the 1970s, measures the intensity of the sound...
Simple Transistor Tester (CB19460E)
This simple NPN and PNP transistor tester configuration can use the low current range of a common...