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Output Noise Reduction Device

A technology for outputting noise, noise, applied in the structural field of fixed conductive rods

Active Publication Date: 2019-01-22
KITAGAWA INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sometimes this noise overlaps with the output voltage and spreads to the supply equipment via the conductive rod to cause adverse effects, so a device for reducing noise is required

Method used

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  • Output Noise Reduction Device
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Examples

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Embodiment Construction

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. figure 1 A noise filter module 1 as an example of the output noise reduction device of the present invention is shown, and a circuit diagram is shown when the noise filter module 1 is connected between the output terminal VX and the output terminal VO of the switching power supply 5 . The switching power supply 5 is housed in a metal case 3 made of aluminum die-cast or the like. The switching power supply 5 is, for example, a vehicle-mounted power supply, which steps down the voltage value of a drive system power supply voltage VIN supplied from a built-in battery (not shown) in a hybrid vehicle or an electric vehicle, and supplies power to an auxiliary battery (not shown). ) Step-down switching power supply for power supply. The auxiliary battery supplies power supply voltage to electrical equipment in the vehicle, such as audio equipment, air conditioning equipment, ...

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PUM

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Abstract

The present invention provides an output noise reduction device, which can properly protect the components made by molding through the embedded parts.The noise filter module (an output noise reduction device) forms a modulus to form a modular system through embedded parts in order to protect the conductive rod and magnetic core.The molding department is formed by resin materials with a molded contraction rate of less than 0.5 %.As a result, the amount of contraction after the formation of the mold is reduced, the stress caused by contraction, and can prevent the damage of the magnetic core, the deformation of the lead framework, etc.

Description

technical field [0001] The technology disclosed in the present invention relates to an output noise reduction device for reducing noise mixed in an output voltage or the like flowing through a conductive rod, and particularly relates to a structure for fixing a conductive rod. Background technique [0002] Conventionally, in the output voltage and output signal output from switching power supplies and other electronic equipment through conductive rods, switching noise of the operating frequency of the electronic equipment and its harmonic frequency may be mixed. Such switching noise may adversely affect supply equipment such as external electronic equipment, and needs to be suppressed as necessary. In a switching power supply, when an output voltage of a predetermined voltage value is output by the switching operation of the power transistor, switching of the current path by turning on / off the power transistor generates noise at the switching frequency and its harmonic frequ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00H01F17/06H01F27/02H01F27/06H01F27/29
CPCH01F17/06H01F27/02H01F27/06H01F27/29H05K9/00H01F3/14H01F27/022H01F2017/065H01G4/38H03H1/00H03H2001/0021
Inventor 谷水友和上野和重森田胜幸
Owner KITAGAWA INDS