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A manual power switch module for LED control device

A control device and switching module technology, which is applied in the direction of lighting devices, light sources, electrical components, etc., can solve the problems of high cost and unstable output power, and achieve the effect of simple structure and low cost

Inactive Publication Date: 2019-01-25
厦门益光照明科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a manual power switch module for LED control devices, which solves the problems of high cost and unstable output power of the current LED lamp power switch module

Method used

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  • A manual power switch module for LED control device
  • A manual power switch module for LED control device
  • A manual power switch module for LED control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] refer to figure 2, the switching unit includes a switch SW1, a resistor R3, a resistor R4, a resistor R6, a resistor RH, a transistor Q1, and a transistor Q2; the base of the transistor Q1 is connected in series with the resistor R3 to the third pin of the chip U1 connected, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected to the base of the triode Q2; the emitter of the triode Q2 is grounded, and the collector of the triode Q2 is connected in series with the resistor R6 Afterwards, the power supply VDC is connected; one end of the resistor R4 is connected to the fourth pin of the chip U1, and the other end is connected to the collector of the triode Q1; the control end of the switch SW1 is connected to the fourth pin of the chip U1 connected, the first gear of the switch SW1 is connected to the power supply VDC, and the second gear is grounded; one end of the resistor RH is connected to the collector of the transistor Q2, and the o...

Embodiment 2

[0043] refer to image 3 , this embodiment is basically the same as Embodiment 1, the difference is that: the switching unit includes a switch SW1, a resistor R3, a resistor R5, a resistor RL, and a transistor Q1; the base of the transistor Q1 is connected in series with the resistor R3 Afterwards, it is connected to the third pin of the chip U1, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected in series with the resistor R5 and connected to the power supply VDC; one end of the resistor RL is connected to the triode The collector of Q1 is connected, and the other end is connected with the LED control device module.

[0044] When the switch SW1 is turned to gear 1:

[0045] The 4th pin of the chip U1 enable terminal is high, the chip U1 starts to work, the 3rd pin outputs a PWM signal with a predetermined frequency and duty cycle (the value of the predetermined duty cycle is between 50% and 100%) and inputs it to switching unit;

[0046] ...

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PUM

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Abstract

The invention provides a manual power switch module for an LED control device, which solves the problems of high cost and unstable output power of the current LED lamp power switch module. Its output end is connected to the LED control device module, which includes a working power supply, a PWM signal generating unit and a switching unit connected in sequence; the working power supply provides working power for the PWM signal generating unit and the switching unit; the PWM signal The generating unit provides PWM signals for the LED control device module, and outputs PWM signals with predetermined frequency and duty cycle; the switching unit is used to switch the PWM signals, and provides different PWM signals for the LED control device module.

Description

technical field [0001] The invention relates to the field of circuit control, in particular to a manual power switching module for an LED control device. Background technique [0002] In LED lamps, it is often necessary to switch the output power to achieve the purpose of switching the brightness of the LED lamp. The existing power switching circuit often needs to select a matching AC-DC control IC according to the brightness of the LED lamp required to support PWM regulation. Light function, the existing power switching solutions such as common TRAIC dimming, MCU control, etc. make the overall cost of the circuit too high, which in turn leads to high prices of LED lamps and poor market acceptance; another solution is to directly switch the current limiting resistor The resistance value is used to switch the output power, but the current-limiting resistor is sensitive and the power changes greatly, which seriously causes the LED control device to not work, the power output i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/37
Inventor 苏志杰周成池启珍
Owner 厦门益光照明科技股份有限公司