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Flicker-free dimming circuit for non-point light source

A dimming circuit, flicker-free technology, applied in the field of power conversion, can solve problems such as rapid aging, increase in output power, and the inability of lamps to maintain stable lighting brightness, and achieve the effect of reducing ripple amplitude

Inactive Publication Date: 2018-06-12
UNITY OPTO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the structure of the self-excited driving circuit is simple, it lacks a constant power control mechanism, which causes the output power to increase with the increase of the input voltage, which in turn causes the lamp to be unable to maintain stable lighting brightness and has the problem of rapid aging

Method used

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  • Flicker-free dimming circuit for non-point light source
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  • Flicker-free dimming circuit for non-point light source

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Embodiment Construction

[0016] In order to enable the examiner to clearly understand the content of the present invention, the following descriptions are provided together with the drawings, please refer to them.

[0017] Such as Figure 3 ~ Figure 5 As shown, they are respectively the block diagram, circuit diagram and waveform diagram of the preferred embodiment of the present invention. As shown in the figure, the flicker-free dimming circuit 2 of the 15.7W non-point light source adopts a double-stage isolated circuit structure to drive a lamp with a wider light source area, so that the lamp still has no flicker when the brightness is adjusted. The strobe lighting effect meets the high-quality consumer demand of commercial stores. The flicker-free dimming circuit 2 of the non-point light source is provided with a TRIAC module 20, an input module 21, a conversion module 22 and an output module 23, and the input module 21 is electrically connected to an external power supply through the TRIAC modul...

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PUM

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Abstract

A flicker-free dimming circuit for non-point light source has a TRIAC module, an input module, a conversion module and an output module. The TRIAC module adjusts the voltage phase of an external powersupply for the input module to export an input voltage, and the conversion module in a boost circuit structure is provided with a conversion coil and a converter to receive and raise the voltage value of the input voltage to a voltage value of an operating voltage and then supplies the operating voltage to the output module. The output module adopts a fly-back circuit structure and induces the operating voltage to form a driving voltage in a constant value and then outputs the driving voltage to a lamp with a relatively wide light source area. In this way, the panel lamp can meet high safetystandards and enhance its product adaptability and competiveness.

Description

technical field [0001] The invention relates to the technical field of power conversion, in particular to a flicker-free dimming circuit supporting a TRIAC (TRI-electrode ACswitch, bidirectional triode thyristor) non-point light source. Background technique [0002] In order to create a comfortable, bright and stylish reading space or work space, many people install simple and generous flat panel lights on the indoor ceiling. In order to drive the light source components in the lights, it is necessary to use a drive circuit that converts the mains power. , to provide the required power for the light source components and ensure that the overall lamp works smoothly. by figure 1 The drive circuit 1 shown is an example, which is a non-isolated booster (Boost) power converter commonly used in traditional 15.7 watt (W) panel lights, and is provided with an inductor L, a diode D, a capacitor C, and a Switch 10, a detection resistor R S and a PWM controller 11, the inductor is c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00H05B45/59
CPCH05B45/10H05B45/38H05B45/385H05B45/59H02M3/33507H02M5/257H02M1/007H02M1/081H02M3/33523
Inventor 吴志贤庄凯程洪正翰
Owner UNITY OPTO TECH CO LTD