FET referenced constant current source (CB8830E)

This circuit was obtained in a 1967’s EEE. Transistors and integrated circuits can be replaced by modern equivalents. The FET is for general use.

| Clique na imagem para ampliar |

Diac Phase Control (CB13368E)
This circuit is from a publication about thyristors from the 70s. It consists of a pulse generator...
Wien Bridge Oscillator (CB12737E)
In the figure we have an oscillator circuit by Wien Bridge (Wien Bridge Oscillator). The frequency of...
Driver for Electric Typewriter (CB6561E)
This circuit was found in a Philips documentation from 1966. Its purpose is to drive the solenoid...