This circuit is from a Radio Electronics magazine from July 1979. It uses the well-known IC 7107, a liquid crystal exciter that became popular in circuits of this type at the time.
August 2017 - MCUs of the new Infineon MC1400 series for industrial use can now be purchased from...
In this circuit, the output voltage is Vxx plus the zener voltage. The circuit is from the SGS...
This circuit can be used in traffic alarm systems. The relay trips when the light falling on the...