Importance

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Abstract

A power supply converter includes a power input circuit, which generates and outputs a first alternating current voltage; a transformer, which converts the first alternating current voltage into a second alternating current voltage; a power output circuit, which converts the second alternating current voltage into an output voltage, and outputs the output voltage; a resonant circuit and a correction circuit, which senses the first alternating current voltage to obtain a detection signal, and detects a value of a ringing signal in the detection signal, and sends a control signal to the power input circuit according to the value of the ringing signal, to adjust the frequency of the first alternating current voltage to be equal to the resonance frequency of the resonant circuit or be around the resonance frequency, so as to adjust the value of the ringing signal to reach a minimum value.

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First Claim