Refrigerator amps may vary but typically can spike around 15 amps.
Power on delay circuit for refrigerator.
Power on delay circuit for refrigerator.
This safeguards your food too.
Most refrigerators run between 3 to 6 amps the unit of measurement for electrical.
The simple delay turn on the monitor circuit.
Power on delay circuit for refrigerator.
Power on delay circuit for refrigerator.
The delay circuit and your one shot circuit work fine.
The alarm would need a delay when power was applied so the alarm module could be placed.
When 220 volt power input to the circuit the lower the voltage to 220 volts to 15 volts with r1 r2 c1 and c2 current limiting it to about 41 milliamps.
General electrical best practices end up shaping the way a kitchen is wired for electrical power.
I wanted to add a latched led flashing type to indicate that the alarm had been triggered.
By contact of the relay switch to acting.
As such it is best if a refrigerator is on its own circuit.
This simple refrigerator protector circuit is actually a delay on timer circuit which makes sure that whenever a power failure occurs or in case abrupt power fluctuations take place the refrigerator is never allowed to switch on instantly rather after a delay of a few moments.
The alarm would need to be activated by light.