This simple circuit is intended to test the zener test. RV1 can be calibrated in terms of voltage. The maximum voltage of the tested zener is that used in the circuit supply.
Suggested by a 90s Radio Elecrtronics, this circuit is intended to supply mobile equipment of the time....
Cutting off the light that falls on the LDR causes the relay to be triggered. The light source may be...
When this circuit is activated the LED flashes for a moment indicating that the function has been...