This circuit was found in a Mallory documentation from 1968. The integrated circuit is of the time, unusual in our day. Input sensitivity is 20 mV for 2 W output.
With this circuit, power cables can be detected by simply approaching PP. PP is an antenna or...
Wien Bridge This Vienna bridge oscillator generates a sinusoidal signal whose frequency depends...
Lamps in the range between 20 and 50 mA can be used. Voltage supply is according the lamp and...