A circuit for reducing resonance voltage.

摘要

A resonance voltage is generated by the inductance and capacitance of a cable (30) connecting the output voltage of a power source (10) to a load, such as a motor. As the cable length is increased, the impact of the cable (30) inductance and capacitance on the output voltage is increased. The increased cable length may result in oscillation or resonance of the output voltage becoming twice the voltage of the power source (10), leading to a premature deterioration of the connected load (40). In the invention, a circuit (60) is provided to suppress the resonance voltage by clamping a crest of the voltage to approximately the value of the voltage of the power source (10). <IMAGE>