The invention relates to an intelligent
power saving device of a power source and a working method of the intelligent
power saving device, wherein the intelligent
power saving device of the power source and the working method of the intelligent power saving device are suitable for office appliances and household appliances to achieve the power saving purpose. The intelligent power saving device of the power source comprises an
alternating current power source circuit, a
direct current stabilized power source circuit, a start power source switching circuit, a power source
stored energy switching circuit, a pulse power source
control circuit, an
infrared ray receiving circuit, a drive circuit and a current detection circuit. According to the intelligent power saving device of the power source, after a computer host is
shut down, the computer host, external computer devices and an
alternating current power source of the intelligent power saving device are closed automatically; after
electric devices having the
infrared ray remote control receiving function is
shut down in a
remote control mode, the
electric devices and the
alternating current power source of the intelligent power saving device are closed automatically; a user only needs to press a power source opening / closing button on an original
remote control when using the
electric devices again, and starting is achieved without
standby power consumption. By means of the intelligent power saving device of the power source, the office appliances or the household appliances at a standby state and the alternating current power source of the intelligent power saving device can be closed automatically, and stand-by
power consumption is eliminated. The intelligent power saving device of the power source is suitable for being applied to the various electric devices.