Patent ID: 7547989
Filing Date: 2009-06-16
Classification: G06F,H02J

Abstract:
1. A control structure for a power supply, used to transform an external source power into different voltage level DC powers for internal electronic devices of a computer, and comprising: a primary power system, transforming said external source power into DC powers; a power switching unit, normally electrically connected with said primary power system, normally driven by a DC power output by said primary power system, and outputting a computer-turn on signal and a computer-turn off signal; at least one switch, installed on a DC power cable supplying DC power to said internal electronic device, and electrically connected to said power switching unit, wherein when said switch receives said computer-turn on signal, said switch will be in the closed-circuit state, and DC power will be transmitted to said internal electronic device; when said switch received said computer-turn off signal, said switch will be in the open-circuit state, and DC power will not be transmitted to said internal electronic device; and an external electronic device is connected in parallel with said internal electronic device with a regular power cable beginning from one point of said DC power cable between said primary power system and the corresponding said switch; thereby, driving power is normally ready for said external electronic device.