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A linear speed regulation circuit utilizing pulse width

A linear, speed-regulating technology, applied in the electronic field, can solve the problems of heat dissipation and precise adjustment that cannot meet the needs of switches

Pending Publication Date: 2019-06-07
深圳市菲菱科思通信技术股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the control of the switch fan, since the heating power of the switch varies according to the running time, the switch usually dissipates heat through the fan. In the prior art, the fans of the switch mostly rotate at a fixed speed. Variable-speed fans, but usually only have a few different rotation levels, which cannot meet the precise adjustment of the heat dissipation of the switch, and achieve the ideal heat dissipation effect while saving energy

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  • A linear speed regulation circuit utilizing pulse width

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Embodiment Construction

[0026] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

[0027] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The occurrences of this phrase in various places in the specification are not necessarily all referrin...

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Abstract

The invention discloses a linear speed regulation circuit utilizing pulse width, which comprises a low-pass filter circuit module and a linear amplification circuit module, the low-pass filter circuitmodule is used for converting an input pulse width signal into a direct current output signal corresponding to the input pulse width signal; And the linear amplification circuit module is connected with the low-pass filter circuit module, and the linear amplification circuit module is used for carrying out linear amplification on the direct current output signal and then outputting the direct current output signal. The pulse width linear speed regulation circuit is used for controlling the pulse width of the PWM pulse signal, and The rotating speed of the fan is controlled by 0%-100%, and therotating speed of the fan is increased along with increase of power consumption of the switch; Otherwise, as the power consumption of the switch decreases, the fan speed decreases; Therefore, a reasonable heat dissipation effect is achieved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a linear speed regulation circuit utilizing pulse width. Background technique [0002] PWM linear voltage is widely used in various DC voltage stabilizing circuits due to its advantages of low noise, high power supply rejection ratio, micro power consumption and simple peripheral circuit structure. [0003] In the control of the switch fan, since the heating power of the switch varies according to the running time, the switch usually dissipates heat through the fan. In the prior art, the fans of the switch mostly rotate at a fixed speed. Variable-speed fans, but usually only have a few different rotation levels, can not meet the precise adjustment of the heat dissipation of the switch, and achieve the ideal heat dissipation effect while saving energy. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the related art at ...

Claims

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Application Information

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IPC IPC(8): H03F3/68F04D27/00
Inventor 万圣冯小毛潘力豪
Owner 深圳市菲菱科思通信技术股份有限公司
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