Circuit with overvoltage protection and current accumulation

A technology of overvoltage protection and current storage, which is applied in the direction of circuit devices, battery circuit devices, collectors, etc., can solve the problems of unable to save the scene of power failure, etc., and achieve the effects of strong practicability, reduced circuit damage, and reduced costs

Inactive Publication Date: 2017-01-18
武汉众智数字技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the sudden power failure of the equipment will make it impossible to save the scene of power failure.

Method used

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  • Circuit with overvoltage protection and current accumulation
  • Circuit with overvoltage protection and current accumulation
  • Circuit with overvoltage protection and current accumulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0035] 1. Overall

[0036] like figure 1 , the structure of this circuit is:

[0037] including power input 000;

[0038] A clamping module 100, an enabling module 200, a power switch module 300 and a current storage module 400 are provided;

[0039] The power input 000, the clamping module 100, the enabling module 200, the power switch module 300 and the current storage module 400 are connected in sequence.

[0040] Its working principle is:

[0041] The voltage of the power input 000 is input to the clamp module 100, and the clamp module 100 controls the voltage at the voltage set by the clamp diode. When the voltage of the power input 000 is higher than the voltage of the clamp module 100, the The transistor is turned on, and the MOS tube in the power switch module 300 is turned off, so the function of overvoltage protection is realized; when the voltage of the power input 000 do...

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PUM

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Abstract

The invention discloses an overvoltage protection and current accumulation circuit, relating to the technology of overvoltage protection and current accumulation. The circuit comprises a power supply input (000). The circuit is provided with a clamping module (100), an enabling module (200), a power supply switch module (300) and a current accumulation module (400). The power supply input (000), the clamping module (100), the enabling module (200), the power supply switch module (300) and the current accumulation module (400) are orderly connected. Through the combination of a zener diode, a triode and a MOS, the overvoltage protection is realized through a simple circuit, the circuit damage caused by the wrong use of an input power supply is reduced greatly, a current accumulation circuit is added, the effect of power-off rapid switching in a short time and field protection can be realized, the circuit is simple, and the practicability is strong.

Description

technical field [0001] The invention relates to a protection circuit, in particular to a circuit with overvoltage protection and current storage. Background technique [0002] In the current electronic equipment, such as 5V power supply equipment, it is likely to be misused with an input voltage higher than 5V due to human misoperation or the same interface as the 12V power adapter. If the electronic equipment has not been applied If the overvoltage protection circuit is used, it is easy to cause damage to the power supply circuit of the electronic device, resulting in the failure of the device to be enabled. Therefore, a simple and practical overvoltage protection circuit is quite urgent. [0003] In addition, the sudden power failure of the equipment will make it impossible to save the power failure scene. Contents of the invention [0004] The purpose of the present invention is to overcome the problems and deficiencies in the prior art, and provide a circuit with ove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/32H02J9/06H02J7/34
CPCH02J7/345H02J9/061H02M1/32H02M1/322H02M1/325
Inventor 沈青婧廖洲
Owner 武汉众智数字技术有限公司
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