| 摘要 |
A power supply device includes an AC generation part having a sinusoidal wave generation part generating a first sinusoidal wave signal, an integrator integrating a difference between the first sinusoidal wave signal and a feedback signal, a triangular wave generation part generating a triangular wave signal, a comparator comparing an output of the integrator and the triangular wave signal and outputting a PWM signal, a switching drive part amplifying the PWM signal and outputs an amplified PWM signal, a filter converting the amplified PWM signal into a second sinusoidal wave signal, a transformer increasing a voltage of the second sinusoidal wave signal and outputting an AC voltage, and a voltage divider dividing the AC voltage and generating the feedback signal, and a DC generation part generating a DC voltage. The power supply device superimposes the AC voltage and the DC voltage and outputs a superimposed voltage. |
