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Computer and power circuit thereof

A computer power supply and circuit technology, applied in the direction of data processing power supply, can solve the problems of large transformer input power, low voltage conversion efficiency, power loss, etc., to reduce the sum of transformer input power, improve voltage conversion efficiency, and solve the The effect of high pressure input power

Inactive Publication Date: 2013-01-16
陈志伟
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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

Method used

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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 object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, 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 parts related to the embodiment of the present invention are shown. 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 input end, first output end, and second output end of the PFC and PWM control circuit 400 Terminals...

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Abstract

The invention belongs to the field of power circuits, and provides a computer and a power circuit thereof. The power circuit of the computer is provided with a power control circuit comprising a voltage isolating unit, a voltage acquiring and supplying unit, a switch tube and a voltage dividing unit. Under the condition that a main power supply of the computer works normally, +5V output voltage is directly acquired from a voltage transformation circuit capable of transforming 12V voltage into 5V voltage to be used as standby voltage of the computer, and power loss of a standby auxiliary power supply circuit is transferred to the voltage transformation circuit capable of transforming 12V voltage into 5V voltage, so that the sum of voltage transformation input power of the integral power circuit of the computer is reduced under the condition that output power is assuredly unchanged, voltage conversion efficiency is improved, and problems of high voltage transformation input power, low voltage conversion efficiency and severe power loss of an existing power supply of a computer are solved.

Description

technical field [0001] The invention belongs to the field of power supply circuits, in particular 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 by the flyback architecture 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 the computer with a +5V standby voltage, the variable voltage input power 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. Contents of the invention [0004] The object of the present invention is to provide a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32
Inventor 陈志伟
Owner 陈志伟
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