Method for setting up CPU fan model

A model and fan technology, applied in the field of using PSPICE software to build CPU fan models, can solve the problems of long verification cycle, unsatisfactory product reliability, and low circuit accuracy, shortening the verification cycle, improving design efficiency, and improving reliability. degree of effect

Inactive Publication Date: 2006-01-04
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Problems solved by technology

For the design of the CPU fan control circuit, the usual way in the industry is to design the circuit directly, then conduct multiple tests on the circuit, and improve it according to the test results until the entire design goal is achieved. The result of this is often the result of the circuit. The accuracy is not high, and the verification cycle is too long, and the reliability of the product is not ideal

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  • Method for setting up CPU fan model
  • Method for setting up CPU fan model
  • Method for setting up CPU fan model

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Embodiment Construction

[0016] The method for establishing the model of the CPU fan in the present invention is to establish the PSPICE model of the CPU fan according to the relationship between the current and the voltage when the CPU fan is working.

[0017] First, analyze the various parameters of a CPU fan, especially the electrical parameter characteristics of the CPU fan. By analyzing the changes in the voltage and current values ​​of the CPU fan at the moment of startup and during normal operation, the CPU fan is selected. Fan input voltage and operating current are used as measurement parameters. according to figure 1 In the shown test circuit, a variable voltage source 10 is connected to both ends of the CPU fan 12, and the voltage value provided by it can vary uniformly from 0 to 12 volts, and a voltmeter 14 is connected in parallel to both ends of the variable voltage source 10 , an ammeter 16 is connected in series on the trunk road of the variable voltage source 10 and the voltmeter 14 ...

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Abstract

The method of setting up CPU fan model includes the following steps: analyzing the electric characteristic of fan and selecting the input voltage and work current parameters; 2. drawing voltage-current characteristic curve of CPU fan based on the experiment data; 3. finding out one standard model in PSPICE software, defining and modifying the model based on the parameters and voltage-current characteristic curve of the foregoing steps to make it possess CPU fan prototype characteristic, and connecting the four terminals into two groups; and 4. simulating to verify the model of the last step, measuring and drawing the V-I characteristic curve of the model, and inspecting the uniformity with the characteristic curve of CPU fan prototype characteristic.

Description

【Technical field】 [0001] The invention relates to a method for establishing a CPU fan model, in particular to a method for using PSPICE software to establish a CPU fan model. 【technical background】 [0002] The CPU is the core component of a computer, whether it can work normally will directly affect the performance of the entire computer, and maintaining the temperature of the CPU within the normal range is one of the necessary conditions to ensure its normal operation. The method is to install a CPU fan to control the CPU temperature. Therefore, the performance of the CPU fan directly affects the normal operation of the CPU. When designing the system, a control circuit that matches the performance of the CPU fan is also crucial to the effectiveness of the CPU fan. For the design of the CPU fan control circuit, the usual way in the industry is to design the circuit directly, then conduct multiple tests on the circuit, and improve it according to the test results until the ...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 游永兴杨兴军
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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