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Self-excited converter

A self-excited converter, high-frequency transformer technology, applied in instruments, converting DC power input to DC power output, adjusting electrical variables, etc., can solve problems such as high ripple voltage, low oscillation frequency, and difficulty in adjusting the oscillation frequency. , to achieve the effect of reducing manufacturing cost, stable oscillation frequency and wide frequency spectrum

Pending Publication Date: 2020-03-06
雷博塔斯(广州)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The consistency of batch products is poor;
[0004] (2) The output characteristics are poor, and the ripple voltage output at the output terminal is relatively high;
[0005] (3) The frequency characteristics are poor and not stable enough;
[0006] (4) The oscillation frequency is not high, the transformer volume is large, the manufacturing is complicated, and the cost is high;
[0007] (5) Affected by the high-frequency transformer, the oscillation frequency is not easy to adjust

Method used

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Examples

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Embodiment Construction

[0026] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0027] refer to figure 2 , the existing typical self-excited converter includes: DC power supply V, capacitor C, resistor R, inductor L, switch tube Q 3 , switch tube Q 4 and high frequency transformer T 1 . Among them, one end of the resistor R is connected to the positive pole of the power supply V, and the other end is connected to the switch tube Q 3 The base connection of the high frequency transformer T 1 The primary winding consists of coil N a , N b and N c , the secondary winding includes coil N s1 .

[0028] Such as image 3 As shown, the self-excited converter provided by the embodiment of the present invention includes:

[0029] DC power V 1 , capacitance C 1 , capacitance C 2 , capacitance C 3 , inductance L 1 , inductance L 2 , switch tube Q 1 , switch tube Q 2 , resistance R 1 , resistance R 2 and high...

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Abstract

The invention discloses a self-excited converter, and belongs to the technical field of power supplies. The self-excited converter is invented to generate stable and higher oscillation frequency by adding a resistor, an inductor and a capacitor on the basis of the prior art and creating a wiring method among the resistor, the inductor, the capacitor and a switching tube, so that ripple voltage output by an output end is lower, the size of a high-frequency transformer can be reduced, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a self-excited converter. Background technique [0002] Most of the current self-excited converters are push-pull converters, which have the following defects: [0003] (1) The consistency of batch products is poor; [0004] (2) The output characteristics are poor, and the ripple voltage output at the output terminal is relatively high; [0005] (3) The frequency characteristics are poor and not stable enough; [0006] (4) The oscillation frequency is not high, the transformer volume is large, the manufacturing is complicated, and the cost is high; [0007] (5) Affected by the high-frequency transformer, the oscillation frequency is not easy to adjust. Contents of the invention [0008] In order to solve the deficiencies of the prior art, an embodiment of the present invention provides a self-excited converter, the self-excited converter includes: [0009] DC power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/338
CPCH02M3/3387
Inventor 许超曹世昌
Owner 雷博塔斯(广州)科技有限公司
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