Half Wave Fast Rectifier (CB5160E)

This 80's circuit can be made with current comparators. Rectification accuracy is 1% DC up to 100 kHz.

Liquid Crystal Watch (CB19860E)
This watch uses a liquid crystal display. The circuit is from the 80s and the module used is...
Darlington FET and Bipolar (CB13417E)
This circuit is from an American documentation from 1976. The FET can be the BF245 or MPF102 and...
DC to DC converter (CB19914E)
This circuit capable of raising a continuous voltage according to the table given next to the...