Patent ID: 7920364

Claim:
A power supply with adjustable outputted voltage, comprising: an AC power input processing circuit for converting an AC power into a DC power output; a DC power input processing circuit electrically connected with the AC power input processing circuit for converting a DC power into a DC power output; wherein the AC power input processing circuit has a voltage adjuster that is electrically connected with the DC power input processing circuit for adjusting the outputted voltage; the DC power input processing circuit comprises: a current sensor; a DC/DC converter electrically connected with the current sensor and the voltage adjuster; a ripple filter electrically connected with the DC/DC converter; and a DC/DC self-drive switch electrically connected with the voltage adjuster, the current sensor and the DC/DC converter, when an extremely large inputted current is detected by the current sensor, the DC/DC self-drive switch is turned off to shut down an output current.