| 摘要 |
PURPOSE: A power supply device is provided to simply test an operation property due to a frequency variation and a voltage variation by controlling a voltage and a frequency of AC power supplied to an electric appliance. CONSTITUTION: An HMI(Human Machine Interface)(110) generates an output instruction voltage. An inverter(120) converts AC into DC , generates a PWM(Pulse Width Modulation) signal according to a frequency drop signal, a frequency rise signal, and a detection voltage of the AC power supplied to a load. A transformer(140) converts the voltage of AC generated from the inverter and outputs the converted voltage to the load. A transducer(160) outputs the detection voltage to the inverter by detecting the voltage of the AC power which is supplied to the load by the transformer. |
