and the circuit board there is a device like this it's an electronic component it can run smoothly without interruption it's called a capacitor although a capacitor is a small device but it can store energy and keep the voltage stable during power fluctuations it consists of two plates separated by dialectic electric material in this circuit the capacitor is connected parallel with the lapd and the power supply when we close the switch the capacitor charges and start storing energy and when the power cut out and voltage drop the capacitor will supply power for a short time this helps smooth voltage and stabilized power fluctuations just imagine of the capacitor as a water tank when there is no water tank and you close the valve the water will stop immediately
if we let the water flow into the tank first we have a backup water
and when the valve closes again the water will still briefly flow out of the tank
this will balance the waterflow like a capacitor smooths electricity