Fan control system and method of PC power supply

A PC power supply and fan control technology, which is used in pump control, electrical digital data processing, non-variable-capacity pumps, etc., can solve the problems affecting the life of the PC power supply, the temperature of internal components, etc., and is conducive to cooling. , the effect of speeding up

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A PC power supply and fan control technology, which is used in pump control, electrical digital data processing, non-variable-capacity pumps, etc., can solve the problems affecting the life of the PC power supply, the temperature of internal components, etc., and is conducive to cooling. , the effect of speeding up

CN110762047APending Publication Date: 2020-02-07协发(东莞)电子有限公司

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[0021] The present invention will be further described below in conjunction with the description of the drawings and the specific embodiments.

[0022] Such as Figure 1 to Figure 5 As shown, a PC power supply fan control system includes a main power supply circuit 1, an auxiliary power supply circuit 2, a control module 3, a temperature detection device 4, and a fan 5. The main power supply circuit 1, the auxiliary power supply circuit 2, and the temperature detection The output terminals of the measuring device 4 are respectively connected to the input terminals of the control module 3, the output terminals of the control module 3 are connected to the fan 5, and the output voltage of the auxiliary power supply circuit 2 is higher than that of the main power supply circuit 1. The output voltage.

[0023] Such as Figure 1 to Figure 5 As shown, the auxiliary power supply circuit 2 includes a rectifier diode D3, an electrolytic capacitor C3, a capacitor C4, a photocoupler IC1:B, a...

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Abstract

The invention provides a fan control system of a PC power supply. The system comprises a main power supply circuit, an auxiliary power supply circuit, a control module, a temperature detection deviceand a fan, wherein output ends of the main power supply circuit, the auxiliary power supply circuit and the temperature detection device are connected with an input end of the control module, an output end of the control module is connected with the fan, and output voltage of the auxiliary power supply circuit is higher than output voltage of the main power supply circuit. The invention also provides a fan control method of the PC power supply. The system and the method have the beneficial effects that when the PC power supply works under the severe condition of high temperature and full load,power supply of a fan circuit is switched to be provided by the auxiliary power supply circuit, voltage of the fan can be further improved, and the rotating speed is also accelerated accordingly, sothat the cooling of components is facilitated.

Description

technical field [0001] The invention relates to a fan control system, in particular to a fan control system and method for a PC power supply. Background technique [0002] The fan control circuit power supply of the existing PC power supply has only one power supply module, which adopts the main output 12V power supply, and controls the voltage of the fan according to the temperature detected by the temperature detection device. Because the maximum voltage of the fan is limited by 12V, if it is working in a high temperature environment, although the temperature detected by the temperature detection device has risen, the operating voltage of the fan is limited to 12V and cannot continue to rise, causing internal components to The temperature of the device will increase significantly, thereby affecting the service life of the PC power supply. Contents of the invention [0003] In order to solve the problems in the prior art, the present invention provides a fan control syst...

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Application Information

Patent Timeline

07 Feb 2020

Publication

CN110762047A

IPC: F04D27/00; G06F1/20

CPC: F04D27/004; G06F1/206

Inventors: 陈志明