Patent ID: 8480382

Claim:
An electromagnetic pump, comprising: an electromagnetic device surrounded with coils driving at least one swing arm swinging forth and back, which further drives a bladder expanded and compressed to respectively draw a fluid into said pump from one end thereof and discharge said fluid from another end of said pump; and a frequency converter circuit which comprises an oscillator circuit, a bistable circuit and a push-pull circuit, wherein said oscillator circuit oscillates to transform DC into a single-phase oscillating signal, wherein said bistable circuit splits said single-phase oscillating signal into a N-phase stimulus signal and a S-phase stimulus signal, wherein said push-pull circuit amplifies and transports said N-phase stimulus signal and said S-phase stimulus signal to said electromagnetic pump, wherein said frequency converter circuit is arranged to use DC to drive said electromagnetic pump, wherein the oscillating frequency of said oscillator circuit is adjusted to change a suction pressure, a suction flow, a discharge pressure, and a discharge flow of said electromagnetic pump.