This circuit was found in documentation from the 1980s. The integrated circuit is from the time and the voltage depends on the desired power, and the component's datasheet should be consulted.
A touch of the sensor makes the load bistable (load) connected in Q1. For a BC548, a 6 V or 12 V...
With the use of an additional diode and a resistor, the configuration of the figure can be...
This circuit was found in documentation from the 1980s. The circuit uses several components of the...