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Single-ended flyback power supply

A flyback, power supply technology, used in electrical components, regulating electrical variables, instruments, etc., can solve the problem of inability to switch power supply output voltage stability.

Inactive Publication Date: 2021-01-12
HUBEI POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, it is necessary to provide a single-ended flyback power supply to solve the current problem that the output voltage of the switching power supply cannot be stabilized

Method used

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  • Single-ended flyback power supply
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Embodiment Construction

[0028] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

[0029] see figure 1 , the single-ended flyback power supply provided by the embodiment of the present invention includes an input rectification and filtering circuit 1, a clamping circuit 2, a high-frequency transformer circuit 3, an output rectification and filtering circuit 4, a feedback circuit 5 and a pulse width modulation circuit 6, wherein , the input rectification and filtering circuit 1, the clamping circuit 2, the high-frequency transformer circuit 3 and the output rectification and filtering circuit 4 are sequentially connected, the feedback circuit 5 and the pulse width modulation ...

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Abstract

The invention relates to a single-ended flyback power supply, which comprises an input rectifying and filtering circuit, a clamping circuit, a high-frequency voltage transformation circuit, an outputrectifying and filtering circuit, a feedback circuit and a pulse width modulation circuit, wherein the input rectifying and filtering circuit, the clamping circuit, the high-frequency voltage transformation circuit, and the output rectifying and filtering circuit are connected in sequence. The feedback circuit and the pulse width modulation circuit are connected in sequence, the feedback circuit is further connected with the output rectifying and filtering circuit, and the pulse width modulation circuit is further connected with the high-frequency voltage transformation circuit. After the feedback circuit is used for collecting error voltage, the error voltage is fed back to the pulse width modulation circuit, the pulse width modulation circuit adjusts the magnitude of the first alternating-current voltage output by the high-frequency high-voltage circuit according to the feedback voltage, and then the second direct-current voltage is adjusted in a following mode. Therefore, when the second direct-current voltage is too high or too low, the second direct-current voltage can be detected and adjusted, and the purpose of voltage stabilization is achieved.

Description

technical field [0001] The invention relates to the technical field of flyback power supplies, in particular to a single-end flyback power supply. Background technique [0002] With the development of society, human beings are still unable to directly use natural electrical energy (such as lightning), and people can only use other energies to convert them into electrical energy, such as thermal power plants (converting the chemical energy of coal into electrical energy), hydropower plants (converting the chemical energy of water potential energy into electricity), nuclear power plants (convert the nuclear energy of molecules into electricity), windmills for power generation (convert wind energy into electricity), and more. However, we call the electric energy produced without any treatment as direct electric energy, because the voltage, current, and frequency of direct electric energy are extremely unstable and do not meet the requirements of human use. This requires some pr...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M1/12H02M1/32H02M1/08
CPCH02M3/335H02M1/126H02M1/32H02M1/08
Inventor 肖志军
Owner HUBEI POLYTECHNIC UNIV
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