Fridge's Door Warning (easy Schematic)
make an easy fridge's door warning with simple parts Circuit Schematic i use 555 timer 2N5551 trancistor 2x 1k resistors 170k resistor led 100uF capacitor (change this to change the delay) 0.1uF capacitor normanly open switch TMB12A12 beeper LRV08 12v battery The Pcb print the pcb ...By: andreash79
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