Patent ID: 8749095

Claim:
A uninterruptable power supply suitable for an audio visual apparatus, comprising: a AC/DC converter coupled to an AC power source; a DC/AC converter coupled to the AC/DC converter; a battery coupled to the AC/DC converter and the DC/AC converter; a power output port coupled to an output of the DC/AC converter; a current detecting unit coupled to the power output port and the DC/AC converter; a control unit coupled to the AC/DC converter, the DC/AC converter and the current detecting unit; and a wireless transceiver module coupled to the control unit, wherein the power output port is connected to the audio visual apparatus, the control unit detects a load current via the current detecting unit, and a command code controlling the audio visual apparatus is saved in the control unit, and when the AC power source fails, if the control unit detects the audio visual apparatus being on and the battery status reaches a default value, then the control unit sends the command code via the wireless transceiver module.