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Power supply circuit equipped with DC/DC conversion module

A technology of power circuit and conversion module, which is applied in the direction of output power conversion device, electrical components, and adjustment of electric variables, etc., which can solve problems such as poor stability and electromagnetic interference of power circuit, and achieve the effect of high stability and strong anti-interference ability

Active Publication Date: 2017-05-31
HENGYE ELECTRONICS JIAXING CITY
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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 provide a power supply circuit with a DC / DC conversion module in order to solve the problems of electromagnetic interference and poor stability in the current power supply circuit of the electric energy meter

Method used

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  • Power supply circuit equipped with DC/DC conversion module
  • Power supply circuit equipped with DC/DC conversion module

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Embodiment Construction

[0019] The technical solutions of the present invention will be further described and illustrated through specific examples below.

[0020] Such as Figure 1-2 As shown, a power supply circuit with a DC / DC conversion module includes a transformer, a rectifier circuit and a DC / DC conversion module, the transformer, rectification circuit, and DC / DC conversion module are connected in sequence, and the DC / DC conversion module includes a first Conversion circuit, second conversion circuit and third conversion circuit.

[0021] The principle of the whole power supply circuit is: the power supply voltage of the live wire and the neutral wire is 220VAC, which is output to the rectifier circuit after being transformed by the transformer, and the rectifier circuit outputs the front-end voltage VDCC, and the front-end voltage VDCC is converted by the DC / DC conversion module into the applicable electric energy meter to achieve different The working voltage of the function module.

[002...

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PUM

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Abstract

Disclosed is a power supply circuit equipped with a DC / DC conversion module. The power supply circuit is characterized by comprising a transformer, a rectifying circuit and the DC / DC conversion module, wherein the transformer, the rectifying circuit and the DC / DC conversion module are connected in sequence; the DC / DC conversion module comprises a first conversion circuit, a second conversion circuit and a third conversion circuit; and the first conversion circuit comprises an amplifier chip IC4, a resistor R110, resistor R111, a capacitor C8 and an inductor L2. By adoption of the power supply circuit disclosed in the scheme, multiple kinds of working voltages can be converted by the provided DC / DC conversion circuits to supply power for circuits of different functional modules of an electric energy meter; and meanwhile, the power supply system of the power supply circuit is high in stability and high in anti-interference capability.

Description

technical field [0001] The invention belongs to the technical field of electronic electric meters, and in particular relates to a power supply circuit with a DC / DC conversion module on the electric energy meter. Background technique [0002] Most of the commonly used household electric energy meters have relatively simple functions. In order to reduce the occupied area of ​​the PCB board and reduce the wiring structure in the electric energy meter, the structure of the power supply circuit is mostly relatively simple, so the stability and anti-interference ability are relatively poor, while the good power supply system Bad directly determines the quality of the electronic energy meter. Moreover, there are multiple functional module circuits in the electric energy meter, and a special power conversion circuit needs to be set up. At present, the conversion circuit on the electric energy meter has the problems of poor system stability and electromagnetic mutual interference, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/04H02M3/00H02M1/44
CPCH02M1/44H02M3/00H02M7/04Y02B70/10
Inventor 胡萌傅亮孙林忠余武军
Owner HENGYE ELECTRONICS JIAXING CITY