Balanced Line Driver (CB6223E)

This 600-ohm line driver was found in a 1980s documentation. The integrated circuit used is not common today.

Active Audio Filter (CB12228E)
This circuit compensates for losses in pre-amplified audio or tone control stages. The circuit can use...
Simple Alarm (CB26246E)
Found in the Encyclopedia of Electronic Circuits volume 5 from 1995, this circuit uses a...
Resistance Bridge (CB3911E)
This is a bridge for the measurement of low value resistances and high values too. The circuit...