A drive circuit that selects the output current of the led through the jack

A technology of outputting current and driving circuit, applied in electric light sources, electrical components, electroluminescent light sources, etc., can solve problems such as inability to adjust current, inability to meet the needs of different lamps, single output current of LED drivers, etc., to improve the scope of application Effect

Active Publication Date: 2019-07-02
盐城莱廷绍工业技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, the output current of the traditional LED driver is single, and the only definite output current is obtained by adjusting the resistance value of the sampling resistor of the dimming chip, and the output current cannot be effectively adjusted according to the real-time demand. Meet the needs of different lamps and lanterns, affect the use of LED drivers and dimming range

Method used

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  • A drive circuit that selects the output current of the led through the jack
  • A drive circuit that selects the output current of the led through the jack

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Embodiment Construction

[0014] like figure 1 As shown, a driving circuit for selecting the LED output current through a socket, including an input power supply, an EMI circuit, a rectifying circuit and a control output regulating circuit connected in sequence, and the rectifying circuit is a bridge rectifying circuit. The control output adjustment circuit includes a dimming driver chip, the dimming driver chip is connected with a MOS transistor Q1 and a sampling resistor R6, one end of the MOS transistor Q1 is grounded, and a resistor R3 is connected between the ground terminals of the MOS transistor Q1. The output terminal of the MOS transistor Q1 and the output terminal of the rectifier circuit are jointly connected with several output terminals. The output end of the tube Q1 is connected to a transformer to make the current more stable. A resistor R1 is set between the terminal 3 and the rectifier circuit, a resistor R2 is set between the terminal 4 and the rectifier circuit, a MOS tube Q2 and a ...

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PUM

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Abstract

The present invention provides a driving circuit for selecting the output current of an LED through a socket, comprising an input power supply, an EMI circuit, a rectifying circuit and a control output regulating circuit connected in sequence, the control output regulating circuit includes a dimming driving chip, and the dimming The driver chip is connected with a MOS transistor Q1 and a sampling resistor R6, the output terminal of the MOS transistor Q1 and the output terminal of the rectifier circuit are connected to a number of output terminals, and a MOS transistor is connected between the dimming driver chip and the sampling resistor R6 Q2 and MOS transistor Q3, the MOS transistor Q2 is connected to a resistor R4, the MOS transistor Q3 is connected to a resistor R5, a first comparator is connected between the MOS transistor Q2 and the resistor R2, and the MOS transistor Q3 A second comparator is connected with the resistor R1. The invention realizes the function of selecting the output current of the LED through the selection of the socket, and improves the application range of the power supply drive.

Description

technical field [0001] The invention belongs to the technical field of LED driving, and in particular relates to a driving circuit for selecting an LED output current through a socket. Background technique [0002] In the existing technology, the output current of the traditional LED driver is single, and the only definite output current is obtained by adjusting the resistance value of the sampling resistor of the dimming chip, and the output current cannot be effectively adjusted according to the real-time demand. Meet the needs of different lamps, affect the use of LED drivers and dimming range. Contents of the invention [0003] The purpose of the present invention is to provide a driving circuit for selecting the output current of LED through the jack, to realize the function of selecting the output current of the LED through the selection of the jack, and to improve the applicable range of power driving. [0004] The present invention provides following technical sch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00
Inventor 董拥刚贵彬力
Owner 盐城莱廷绍工业技术有限公司
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