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Low-noise high-frequency converter based on surging current limitation

A surge current and high-frequency conversion technology, applied in the electronic field, can solve problems such as current instability and noise, and achieve the effects of increasing operating frequency, reducing noise, and working stably

Inactive Publication Date: 2015-10-14
CHENGDU JIESHENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the excessive noise caused by the instability of the current when the existing converter works in a high-frequency environment, and to provide a low-noise high-frequency converter

Method used

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  • Low-noise high-frequency converter based on surging current limitation

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Embodiment

[0020] Such as figure 1 As shown, the low-noise high-frequency converter of the present invention consists of a transformer T1, a transformer T2, a frequency mixing circuit connected to the secondary side of the transformer T1, a first conversion circuit connected to the frequency mixing circuit, and simultaneously with the frequency mixing circuit and the frequency mixing circuit. The processing circuit connected to the first conversion circuit, the second conversion circuit connected to the output terminal of the processing circuit; the inrush current limiting circuit arranged between the primary side of the transformer T1 and the frequency mixing circuit, and the inrush current limiting circuit connected linear drive circuit. The primary side of the transformer T2 is connected to the second conversion circuit.

[0021] The inrush current limiting circuit is composed of PDP type Linton tube Q1, PDP type Linton tube Q2, triode VT8, inductor L, resistor R14, resistor R15, res...

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Abstract

The invention discloses a low-noise high-frequency converter. The low-noise high-frequency converter is characterized by being composed of a transformer T1, a transformer T2, a linear driving circuit connected with the primary side of the transformer T1, a mixer circuit connected with the secondary side of the transformer T1, a first switching circuit connected with the mixer circuit, a processing circuit connected with the mixer circuit and the first switching circuit, and a second switching circuit connected with the output end of the processing circuit; the primary side of the transformer T2 is connected with the second switching circuit. The linear driving circuit is composed of a driving chip U, a triode VT4, a triode VT5, a triode VT6, a triode VT7, a polar capacitor C7 and the like, wherein the positive pole of the polar capacitor C7 serves as the circuit input end, and the negative pole of the polar capacitor C7 passes through a resistor R7 and then is connected with an IN1 pin of the driving chip U. According to the low-noise high-frequency converter, the linear driving circuit is adopted, and thus the converter is made to generate quite low noise when working under high-frequency working conditions, and is suitable for occasions requiring low noise.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a low-noise high-frequency converter based on surge current limitation. Background technique [0002] With the continuous development of circuit electronics technology, converters have been used in various industries. At the same time, with the continuous acceleration of industrial development, production equipment is constantly being updated to meet people's production needs. However, the current instability of existing converters when working in a high-frequency environment causes excessive noise, which cannot meet some low-noise requirements. Contents of the invention [0003] The object of the present invention is to overcome the excessive noise caused by current instability when the existing converter works in a high-frequency environment, and to provide a low-noise high-frequency converter. [0004] The purpose of the present invention is achieved through the following techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/293H02M1/44H02M1/32
CPCH02M5/293H02M1/0045
Inventor 雷明方
Owner CHENGDU JIESHENG TECH CO LTD
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