Patent ID: 8800960

Claim:
An automatic water supply control device, comprising: a power processing unit for processing an alternating current outputted by a micro hydro generator and providing a stable direct current; a capacitor electrically connected to the power processing unit for storing electric energy; a capacitor matrix in parallel connection with the capacitor and being separated from the capacitor by using a diode, the capacitor matrix being composed of more than two capacitors different from the capacitor and providing the electric energy required by an electromagnetic drive unit and a step-down voltage conversion circuit based on the direct current; the step-down voltage conversion circuit electrically connected to the capacitor matrix and a micro controller set for converting the voltage of the direct current and providing a direct current lower than the direct current of the power processing unit; the electromagnetic drive unit electrically connected to the capacitor matrix, and requiring a driving electric energy provided by the capacitor matrix; a sensing unit sensing changes from the environment and outputting sensing signals; and the micro controller set electrically connected to the step-down voltage conversion circuit, the electromagnetic drive unit, and the sensing unit for controlling the electromagnetic drive unit and driving an electromagnetic coil based on the sensing signals from the sensing unit, the micro controller set also controlling the electromagnetic drive unit and driving the electromagnetic coil to supply water and to perform charging based on a logical setting while an output voltage value of the step-down voltage conversion circuit is lower than a preset voltage value.