Balanced Line Driver (CB6223E)

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

12V x 5 A Charger (CB6402E)
Taken from a 1967 RCA publication, this circuit maintains a low current in the battery when it is...
3.8 kHz 741 oscillator (CB9510E)
We found this oscillator in an English documentation from 1977. The symmetrical supply, in fact,...
Biphase VCO 4046 (CB25249E)
This circuit generates signals with opposite phases determined by C1 and adjusted by R2. The...