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Constant current source power supply

A technology of power supply and constant current source, applied in circuits, electrical components, adjusting electrical variables, etc., can solve the problems of poor power supply voltage regulation rate and load regulation rate, power device heating, low power conversion efficiency, etc. Interference, the effect of improving accuracy

Inactive Publication Date: 2019-08-06
XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems in the background technology, the present invention provides a constant current source power supply, the power supply through the design of a feedback winding, through the feedback of the output power, so as to perform secondary voltage regulation, to achieve the high performance of the constant current source power supply Output, which solves the problems of low power conversion efficiency, serious heating of power devices, poor power supply voltage regulation rate and load regulation rate, etc.

Method used

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Embodiment Construction

[0021] The structure and working principle of the three-way constant current source power supply are described in detail below in conjunction with the accompanying drawings:

[0022] Power structure:

[0023] like figure 1 As shown, this example provides a three-way constant current source power supply, including a starting circuit 1, a pulse width control circuit 2, a rectification filter voltage sampling circuit 3, a power switch tube 4, a transformer 7, a rectification filter circuit 5 and a linear Regulator 6;

[0024] Wherein, the transformer 7 includes a transformer skeleton 71, primary windings Q1, Q2, three secondary windings and a feedback winding Q3; the transformer skeleton 71 adopts a split-slot winding scheme, and the transformer skeleton 71 is divided into a first groove 72 and three grooves. A second groove 73, the first groove 72 first winds the primary windings Q1 and Q2 of the transformer, after winding, it is isolated by a polytetrafluoroethylene film, and...

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Abstract

The invention relates to a constant current source power supply. The power supply comprises a starting circuit, a pulse width control circuit, a rectification and filtering voltage sampling circuit, apower switch tube, a transformer, rectification and filtering circuits and linear voltage regulators, wherein the starting circuit is connected with a primary winding of the transformer through the pulse width control circuit and the power switch tube; the transformer is provided with a feedback winding, and the feedback winding passes through the rectification and filtering voltage sampling circuit and then controls the pulse width control circuit; the transformer is provided with multiple secondary windings, each secondary winding corresponds to a rectification and filtering circuit and a linear voltage regulator, and each secondary winding outputs a power supply through the rectification and filtering circuit and the linear voltage regulator. According to the invention, the feedback winding is designed, and secondary voltage regulator is carried out through the fed back output power supplies, thereby achieving high-performance output of the constant current source power supply, andsolving the problems such as low power conversion efficiency, serious heating of power devices and poor power supply voltage adjustment rate and load adjustment rate.

Description

technical field [0001] The invention relates to a power supply, in particular to a constant current source power supply. Background technique [0002] In the positioning and orientation device system, the constant current source of the accelerometer analog-to-digital conversion circuit determines the accuracy and stability of the analog-to-digital conversion circuit. The requirement is that the power supply of the constant current source has good performance and little mutual influence. [0003] With the requirements of product miniaturization design, higher requirements are put forward for the application range, performance index, volume, weight, cost and efficiency of the constant current source power supply. [0004] The output power of the traditional constant current source power supply will have problems such as low power conversion efficiency, severe heat generation of power devices, poor power supply voltage regulation rate and load regulation rate. [0005] The win...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M1/36H02M1/44H01F27/30H01F27/36H01F27/38H01F27/28
CPCH01F27/28H01F27/306H01F27/36H01F27/38H02M1/36H02M1/44H02M3/3353
Inventor 韦明王豪郭芳
Owner XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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