Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of LED short-circuit protection circuit and lamp

A technology of short circuit protection circuit and voltage dividing resistor, which is applied in emergency protection circuit device, lamp circuit arrangement, protection against overcurrent, etc., can solve the problems of high cost and complex structure, and achieve low cost and simple structure Effect

Active Publication Date: 2015-10-28
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an LED short-circuit protection circuit, which aims to solve the problems of complex structure and high cost in the current LED short-circuit protection circuit

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of LED short-circuit protection circuit and lamp
  • A kind of LED short-circuit protection circuit and lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, 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, not to limit the present invention.

[0014] figure 1 The circuit structure of the LED short-circuit protection circuit provided by the first embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows.

[0015] LED short-circuit protection circuit, used to connect LED load D1, LED short-circuit protection circuit includes:

[0016] Filter capacitor C1, voltage regulator chip U1, comparison unit 100, current-limiting resistor R1, voltage-dividing resistor R2, voltage-dividing resistor R3, voltage-dividing r...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention is suitable for the field of protection circuits, and particularly relates to a light-emitting diode (LED) short circuit protection circuit and a light fitting. In the embodiment of the invention, the LED short circuit protection circuit consists of discrete components, and when an LED is short-circuited, a power supply output voltage can be cut off to fulfill the aim of short circuit protection; and the LED short circuit protection circuit is simple in structure and low in cost.

Description

technical field [0001] The invention belongs to the field of protection circuits, in particular to an LED short-circuit protection circuit and a lamp. Background technique [0002] As a new type of light source, LED has the characteristics of energy saving, environmental protection, and high efficiency, and LED technology has matured and is used in various fields. LED is widely used as a lighting source, but when LED is working abnormally, it often has short-circuit conditions, so in Short-circuit protection needs to be added to the LED drive circuit, so as to provide effective protection after the LED is short-circuited and prevent the fault from continuing to expand. Most of the existing protection circuits to prevent LED short circuit are controlled by sampling voltage and outputting by single-chip microcomputer. Although the single-chip microcomputer control has the advantages of high efficiency and flexible application, the single-chip microcomputer needs to cooperate w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/00H02H3/08H05B37/02
Inventor 周明杰孙占民
Owner OCEANS KING LIGHTING SCI&TECH CO LTD