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Computer and power circuit thereof

A computer power supply and circuit technology, which is applied in the direction of data processing power supply, electrical components, and adjustment of electric variables, etc., can solve the problems of low voltage conversion efficiency, large input power of transformer, power loss, etc. The sum of voltage input power solves the effect of large voltage input power

Active Publication Date: 2015-04-29
CHINA GREATWALL TECH GRP CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a computer power supply circuit, aiming to solve the problems of large input power of transformer transformation, low voltage conversion efficiency and serious power loss in the existing computer power supply

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  • Computer and power circuit thereof
  • Computer and power circuit thereof

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Embodiment Construction

[0014] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0015] figure 1 The module structure of the computer power supply circuit provided by the embodiment of the present invention is shown. For the convenience of description, only the part related to the embodiment of the present invention is shown, and the details are as follows:

[0016] In the embodiment of the present invention, the AC rectifier circuit 200 , the PFC booster circuit 300 , the PWM transformer circuit 500 , and the rectifier filter circuit 600 are connected end to end in sequence, and the PFC is connected to the input end, the first output end and the second output end of t...

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Abstract

The invention belongs to the field of power circuit and provides a computer and a power circuit thereof. In the invention, a power control circuit which comprises a voltage isolating unit, a voltage acquiring and supplying unit, a switching tube and a voltage dividing unit is adopted in the power circuit of the computer. Under the condition that the main power source of the computer is in normal working, positive 5V output voltage is directly acquired from a 12V to 5V voltage transforming circuit to be taken as the standby voltage of the computer, so that the power loss of a standby auxiliary supply circuit is transferred to be the 12V to 5V voltage transforming circuit. Therefore, under the condition that the output power is unchanged, the total of voltage transformation input power of the whole computer power circuit is reduced, the voltage converting efficiency is improved, and the problems that the voltage transformation input power is high, the voltage converting efficiency is low and the power loss is serious in the existing computer power source are solved.

Description

technical field [0001] The invention belongs to the field of power supply circuits, and in particular relates to a computer and its power supply circuit. Background technique [0002] At present, in the computer power supply, the standby auxiliary power supply circuit designed with the flyback structure is generally used as the main body of the +5V standby voltage supply of the computer, and its circuit structure is simple and the cost is low. [0003] However, since the above-mentioned standby auxiliary power supply circuit is used in the computer power supply to provide +5V standby voltage for the computer, the input power of the transformer in the existing computer power supply is increased, and the power conversion efficiency is low. Therefore, the existing computer power supply has the problems of large input power of the transformer, low voltage conversion efficiency and serious power loss. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/26H02M3/335
Inventor 许于星于吉永黄昌宾李伟平
Owner CHINA GREATWALL TECH GRP CO LTD
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