Electrical power supply apparatus and controlling method thereof
AssigneesLite-On Electronics (Guangzhou) Limited, Lite-On Technology Corporation
InventorsWei-Cheng Yu, Yun-Chieh Hsu
Life of this patent
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Abstract
Disclosed is an electrical power supply apparatus, comprising a switch circuit, an output circuit, single-direction pass circuit and a control circuit. The output circuit is used for outputting a supply of main power source. The standby circuit is used for providing a supply of standby power source. The control circuit is for being capable of controlling the switch circuit according to a state of the external power source, wherein when the external power source is on, the switch circuit is in a cutoff state for allowing a first period or a second period of a power signal of the external power source transferred to the standby circuit through the single-direction pass circuit.
Claims20
An electrical power supply apparatus, comprising:
- a switch circuit;
- an output circuit, connected to an external power source, for outputting a supply of main power source;
- a standby circuit, connected to the external power source and the output circuit, for providing a supply of standby power source;
- a single-direction pass circuit, connected to the external power source, the output circuit and the standby circuit;
- and
- a control circuit, connected to the external power source, the control circuit controlling a conduction state of the switch circuit according to a state of the external power source,
- wherein when the external power source is on, the switch circuit is in a cutoff state for allowing a first period or a second period of a power signal of the external power source transferred to the standby circuit through the single-direction pass circuit.
A controlling method of an electrical power supply apparatus, comprising the steps of:
- transferring a power signal to a output circuit through a single-direction pass circuit or a rectifying circuit when the electrical power supply apparatus is in a normal operating mode;
- and
- controlling a switch circuit by way of a control circuit when the electrical power supply apparatus is in a standby operating mode, such that a first period or a second period of the power signal is transferred to a standby circuit through the single-direction pass circuit.
Dependencies are inferred from the claim text.