Over-current protection circuit and lamp

An overcurrent protection circuit and circuit technology, which is applied in the direction of protection against overcurrent, can solve problems such as excessive current, economic loss for users, and scrapped service life of lamps, etc., to achieve improved service life, low cost, and simple structure Effect

Active Publication Date: 2015-05-13
SHENZHEN OCEANS KING LIGHTING ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current existing lamps are often scrapped before the expected service life due to excessive input current, which brings economic losses to users.

Method used

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  • Over-current protection circuit and lamp

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Embodiment Construction

[0036] 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, not all, embodiments of the present invention. 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.

[0037] See figure 1 , which is a schematic circuit diagram of an overvoltage protection circuit provided by an embodiment of the present invention. Such as figure 1 As shown, the circuit includes a control circuit 100, a transistor Q1, a resistor R5, a load 400, an amplifier circuit 200, a switch controller 300, a power supply terminal 500 and a ground terminal 600;

[0038] The base of the triode Q1 and the collector of the triode Q1 are respectively connected t...

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Abstract

The embodiment of the invention discloses an over-current protection circuit and a lamp. The over-current protection circuit is composed of discrete elements. By adopting the over-current protection circuit and the lamp of the invention, when the current output of a power source is too large, the power source can be cut off and stopped from outputting working current to a load, thus achieving the purpose of over-current protection. Moreover, the over-current protection circuit has the advantages of simple structure and low cost.

Description

technical field [0001] The invention relates to a protection circuit, in particular to an overcurrent protection circuit and a lamp. Background technique [0002] Lighting products are widely used and important in modern society, and they may be used differently in various industries. But the same purpose is to provide users with enough brightness to enable users to read, work, study, etc. in places with insufficient light. [0003] However, the current existing lamps are often scrapped before their expected service life due to excessive input current, which brings economic losses to users. Contents of the invention [0004] The technical problem to be solved by the embodiments of the present invention is to provide an overcurrent protection circuit and a lamp. It can realize over-current protection and improve the service life of lamps. [0005] In order to solve the above technical problems, an embodiment of the present invention provides an overcurrent protection cir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/08
Inventor 周明杰杨小军
Owner SHENZHEN OCEANS KING LIGHTING ENG CO LTD
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