We found this circuit in the June 1992 issue of Radio Electronics magazine. The sensor is a common diode. The circuit is powered by the power grid from a 12 V transformer.
We find this circuit in an old technical documentation. The circuit can be drawn up with other...
This circuit consists of a relaxation oscillator with a neon lamp that triggers an SCR, generating high...
This circuit works in the opposite form to the previous one and drives a relay as a load. The...