Muting Circuit (CB25267E)

This circuit mutes a system when a phone call is received. The circuit is from a Radio Electronics from December 1990.

| Clique na imagem para ampliar |

Negative Voltage Boost Source (CB1246E )
The circuit shown in the figure is suggested by Micrel, based on the MIC2570 boost voltage...
FM transmitter (CB4473E)
This small FM transmitter has a sensitive modulating stage and is therefore suitable for listening...
12 V x 1 A Power Supply (CB8682E)
Found in a 70s RCA manual, this circuit uses transistors from the era. Equivalent types can be...