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Power supply circuit

A power supply circuit and circuit technology, applied in the electronic field, can solve the problems of low power supply efficiency and high output voltage, and achieve high power supply efficiency

Inactive Publication Date: 2013-12-25
WUXI ZIZO ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above reasons, the present invention proposes a power supply circuit to solve the technical problems of reduced power supply efficiency and high output voltage of existing power supply circuits

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

[0021] Figure 1A It is a schematic structural diagram of a power supply circuit provided by an embodiment of the present invention. see Figure 1A , the power supply circuit includes: a three-phase AC power supply 100 , three transformer circuits 101 , three single-phase bridge rectifier circuits 102 and a filter circuit 103 .

[0022] Wherein, the input terminal of each transformer circuit 101 is correspondingly connected to one-phase AC terminal in the three-phase AC power supply 100, and the output terminal of each transfo...

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Abstract

The invention discloses a power supply circuit. The power supply circuit comprises a three-phase alternating-current supply, three voltage transformation circuits, three single-phase bridge rectifier circuits and a filter circuit. The input ends of the voltage transformation circuits are respectively connected with a one-phase alternating-current end of the three-phase alternating-current supply correspondingly; the output ends of the voltage transformation circuits are correspondingly connected with the alternating-current input end of one single-phase bridge rectifier circuit; direct-current output ends of the single-phase bridge rectifier circuits are respectively connected with the input end of the filter circuit. The power supply circuit is high in power supply efficiency, output voltages and output voltages of the single-phase bridge rectifier circuits are relatively low, and accordingly later power supply processing is facilitated.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a power supply circuit. Background technique [0002] At present, the normal operation of electronic systems is inseparable from a stable power supply. For example, many electronic chips (such as microcontroller chips) usually need to be able to provide a DC power supply of about 5 volts to ensure their normal operation. In addition to using solar cells or chemical batteries as power sources in some specific occasions, the direct current of the circuits in most electronic systems is converted from the 220-volt three-phase alternating current of the grid through the power supply circuit. Among them, the three-phase alternating current is a power system composed of three alternating current circuits with the same frequency, equal potential amplitude, and a phase difference of 120°. In the low-voltage distribution network, the transmission line of the mains generally adopts a th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/04H02M7/06H02M5/10
Inventor 胡寅毅戈浩吴振峰
Owner WUXI ZIZO ELECTRIC