Described in the December 1969 Radio Electronics magazine, this circuit is intended to supply the previous circuit. The circuit is not isolated from the power grid.
Found in an Electronic Design from the 90's, this circuit uses common components. The circuit is...
When the sensor receives light, the relay closes its contacts and remains so even after the light...
This circuit produces pulses of 90 V at intervals that can reach 5 minutes. The circuit is from a...