TV Modulator (CB20773E)

This circuit for the VHF band of analog TV was found in Motorola documentation from the 70s. The integrated circuit used is uncommon today.

| Clique na imagem para ampliar |

High Impedance Headphones Circuit (CB22537E)
This circuit was found in a Radio Electronics from October 1952. The circuit equalizes the sounds...
Current breaker with the CK722 (CB22521E)
This circuit can function as a circuit breaker or current switch opening with a current according to...
10 + 10 W amplifier TDA2009 (CB15246E)
The supply of this circuit can be done with voltages from 8 to 28 V and the maximum output current is...