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Simple constant-current step-down circuit and electronic equipment

A step-down circuit, a simple technology, applied in the direction of irreversible AC power input conversion to DC power output, electrical components, output power conversion devices, etc., can solve the problems of many components and high manufacturing costs

Inactive Publication Date: 2019-08-23
MINGFENG POWER ELECTRONICS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned existing technology realizes the step-down constant current function in low voltage, and the general resistance-capacitance power supply is only used in high-voltage 220V, and there are many components, and the manufacturing cost is high.

Method used

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  • Simple constant-current step-down circuit and electronic equipment
  • Simple constant-current step-down circuit and electronic equipment

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0016] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0017] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses a simple constant-current step-down circuit and electronic equipment, and relates to the technical field of drive circuits. The circuit comprises a first capacitor, a second capacitor, a diode, a first resistor and a second resistor, wherein one end of the first capacitor is simultaneously connected with a secondary coil end of the transformer and one end of the first resistor, the other end of the first capacitor is simultaneously connected with the other end of the first resistor and the anode of the diode, and the cathode of the diode is simultaneously connected withone end of the second capacitor and one end of the second resistor. The circuit is simple, is small in number of electronic elements, is low in production and manufacturing cost, is high in practicability, is sensitive in reaction, is safe and reliable, is capable of achieving multi-path output and is suitable for different loads.

Description

technical field [0001] The invention relates to the technical field of drive circuits, in particular to a simple constant current step-down circuit and electronic equipment. Background technique [0002] At present, the structure of the closest existing approximate product is: use a resistor capacitor diode; its working principle is: the electric energy of the secondary winding of the transformer is realized through the resistor capacitor topology to achieve the step-down constant current effect; [0003] The above-mentioned prior art realizes the step-down and constant-current function in low voltage, and the general resistance-capacitance power supply is only used in high-voltage 220V, and there are many components, and the manufacturing cost is high. Contents of the invention [0004] Aiming at the problems in the background technology, the present invention provides a simple constant current step-down circuit and electronic equipment to solve or at least partially alle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/06
CPCH02M7/06H02M7/068
Inventor 曾映明李军
Owner MINGFENG POWER ELECTRONICS IND CO LTD
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