| 摘要 |
PURPOSE: A power supply device is provided to prevent noise by explosion-proof of a capacitor. CONSTITUTION: A DC voltage feedback unit(106) feeds a supplied DC voltage back to a PWM controller IC. An electronic device is turned on by one DC voltage outputted from an AC/DC converting unit. A feedback voltage supply unit(108) blocks the feedback voltage to be supplied to the PWM controller IC when a feedback voltage is higher than a preset reference feedback voltage. The feedback voltage includes a DC voltage converted in the DC voltage feedback unit and a voltage boosted by a DC voltage converted in the AC/DC converting unit.
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