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Fan and fan system and its wave filter

A fan system and filter technology, which can be applied to DC circuits to reduce harmonics/ripples, output power conversion devices, electrical components, etc., can solve the problems of occupying a lot of space, large inductors and capacitors, etc. The effect of suppressing electromagnetic interference, in line with economic costs, and good space utilization

Inactive Publication Date: 2009-02-18
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, if the current fan system wants to meet the above-mentioned requirements for suppressing low-frequency electromagnetic interference, it must use inductors and capacitors with larger inductance and capacitance values. Only a single fan is used, and most of them are implemented externally. If it is supplied to a fan tray (Fan Tray) composed of several fans, for example, it must take up a lot of space for placement. Therefore, miniaturization is becoming more and more important In terms of structural design, it is necessary to improve the existing fan system and its filter

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  • Fan and fan system and its wave filter
  • Fan and fan system and its wave filter
  • Fan and fan system and its wave filter

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Embodiment Construction

[0029] The filter, the fan with the filter and the fan system according to the present invention will be described below with reference to the related drawings.

[0030] see Figure 4A Shown is a schematic diagram of a filter applied to a fan system according to a first preferred embodiment of the present invention, wherein the fan system includes a filter 30 and a fan 40, and the filter 30 is electrically connected to a first Power terminal V IN and a second power supply terminal V GND , and the fan 40 is electrically connected to the filter 30 .

[0031] The fan 40 has at least a power circuit, a motor and a drive circuit, wherein the power circuit provides the power required by the motor and the drive circuit, and the drive circuit is used to drive and control the operation of the motor.

[0032] The filter 30 includes an amplifying element Q, a capacitor C and a voltage divider circuit 31, the amplifying element Q has a first end, a second end and a third end, wherein t...

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Abstract

A filter is electrically connected to a fan or set in a fan, and is more electrically connected to a first power supply end and a second power supply end. The filter includes an amplifying element, a capacitor and a bleeder circuit. The amplifying element is provided with a first end, a second end and a third end, wherein the third end being electrically connected to a power supply loop of the fan, the capacitor being electrically connected to between the third end of the amplifying element and the second power supply end, the bleeder circuit being electrically connected between the first power supply end the second power supply end, and one bleeder node being electrically connected to the second end of the amplifying element.

Description

technical field [0001] The invention relates to a fan, a fan system and a filter thereof. Background technique [0002] With the development of electrical and electronic products, the demand for heat dissipation has also increased relatively, so heat dissipation technology has become one of the development priorities of computer technology. Among them, due to the advantages of low cost and mature technology, fans are also generally used as heat dissipation devices in products. [0003] Since the fan is a device that drives magnetic components with electricity, it is necessary to consider the interference of noise, especially the electromagnetic interference EMI (Electromagnetic Interference) in electronic noise, which can interfere with the normal operation of other electronic products through the power circuit, so there is There are quite a lot of specifications for electromagnetic interference in electronic products. For example, the design of fan circuits must comply wit...

Claims

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Application Information

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IPC IPC(8): H03H11/04H02M1/14H02J1/02
Inventor 刘正毅蔡宗志
Owner DELTA ELECTRONICS INC