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Dimming method and dimming device

A dimming device and signal technology, applied in the field of dimming, can solve the problems of low interchangeability of lighting equipment, increased manufacturing cost of lighting equipment, complex circuit structure, etc., to reduce manufacturing cost, increase interchangeability, and simplify dimming The effect of the line

Inactive Publication Date: 2013-04-17
WAFLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a design not only complicates the circuit structure of the overall dimming, but also the interchangeability of the lighting equipment itself is relatively low, and relatively increases the manufacturing cost of the lighting equipment.

Method used

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Experimental program
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Embodiment Construction

[0030] The present invention mainly provides a dimming method and a related dimming device that can dim a lighting device that uses a light emitting diode (LED) or a cold cathode lamp (CCFL) as a light source at an AC end without flickering; figure 1 As shown, a dimming method of the present invention is mainly provided with a phase comparison unit 40 connected between the rectification unit 10 and the oscillation unit 20 on the primary side of the transformer unit 30 of the lighting equipment, and using the phase comparison unit 40 to obtain the rectified The multiplied frequency signal of the pulsed DC signal output by the unit 10 is used as a reference phase, and the AC power signal θ phase angle synchronization signal is obtained and sent to the control terminal of the oscillation unit 20, so that the oscillation circuit frequency of the oscillation unit 20 is the same as that output by the rectifier unit 10. The phase angle of the multiplied signal θ is synchronized, so as...

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Abstract

The invention relates to a dimming method and a dimming device. Mainly, a primary side of a transformation unit of lighting equipment is provided with a phase comparison unit connected between a rectifying unit and an oscillating unit; a frequency doubling signal of a pulse DC (Direct Current) signal output by the rectifying unit is obtained by a phase comparison unit and is used as a reference phase; and a theta phase angle synchronous signal of an AC (Alternate Current) power supply signal is obtained and is transmitted to a control end of the oscillating unit, so that an oscillating circuit frequency of the oscillating unit is synchronous with a theta phase angle of the frequency doubling signal output by the rectifying unit, and thus, the aim of avoiding causing blinking of a power supply of the lighting equipment due to the case that a phase of an AC power supply is regulated and changed by a dimmer (TRAIC) is fulfilled.

Description

technical field [0001] The present invention relates to a dimming technology for lighting equipment, and aims to provide a dimming technology for lighting equipment that uses light-emitting diodes (LEDs) or cold cathode lamps (CCFLs) as light sources at the AC end without flickering. A light method and a dimming device related thereto. Background technique [0002] Under the scientific and technological demands of energy saving and carbon reduction and the policy that governments of various countries will gradually ban white light bulbs in the future, light emitting diodes (light emitting diodes, LEDs) have gradually become popular in the lighting market with their advantages of high efficiency, energy saving and adjustable optical rotation. , Its application in street lights, car lights, outdoor lighting, and situational lighting has become the focus of global attention. [0003] In the field of traditional lighting technology, dimmers are often used to adjust the brightne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02H05B41/38
Inventor 颜睿志
Owner WAFLY