Car alarm (CB23933E)

We found this circuit in Radio Electronics from October 1968. The circuit drives headlight bulbs and can be adapted for current applications.

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SCR contactor (CB9262E)
This circuit for controlling high power in the AC network was found in a Motorola documentation from 1968....
1 to 5 W amplifier TDA1011 (CB15975E)
This amplifier is specifically designed for portable radio and recorders with a 4 ohms load....
Light-Sound Converter (CB10686E)
This circuit was found in a 1973 Radio Elettronica magazine. The Italian magazine no longer...