Telephone dialer (CB9235E)

This circuit was obtained in Radio Electronics from the 90s. The integrated circuit is uncommon today.

| Clique na imagem para ampliar |

Phase inverter (CB22232E)
Used in audio circuits in the excitation of output stages, this circuit provides audio signals with...
Push Pull Amplifier with 1 Transistor (CB20040E)
This interesting configuration uses two speakers as a load to have a push-pull excitation with...
Current-controlled oscillator (CB21648E)
This sweep generator or current-controlled oscillator was found in Popular Electronics from...