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LED dimming device applied to controllable silicon dimmer

A technology of a dimming device and an LED light source, which is applied to the output power conversion device, lighting device, light source, etc., can solve the problem that the brightness of LED bulbs cannot be adjusted, and achieve the effects of simple structure, environmental protection energy, and long life.

Active Publication Date: 2010-03-31
CIVILIGHT SHENZHEN SEMICON LIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the prior art, the thyristor dimmer cannot adjust the brightness of the LED bulb with built-in or external switching power supply.

Method used

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  • LED dimming device applied to controllable silicon dimmer
  • LED dimming device applied to controllable silicon dimmer
  • LED dimming device applied to controllable silicon dimmer

Examples

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Embodiment Construction

[0031] In an embodiment of an LED dimming device applied to a thyristor dimmer in the present invention, as Figure 4 The voltage of the commercial power shown after being phase-cut by the thyristor is input to the rectifier 9 through the filter (composed of 1, 2, 4, 5, 6, 7 and 8) and the fuse 3, and rectified into a DC voltage, The filter capacitor 42 is charged through the booster and the inductor 21 in the dummy load. When the fully charged voltage is applied to the high-frequency transformer (composed of 70, 71 and 72) and the main power drive integrated circuit (composed of 47, 48, 49, 50, 51, 52 and 53), the main power supply is started. After the high-frequency transformer is coupled to the secondary part, the voltage after secondary rectification and filtering (composed of 54 and 55) makes the secondary power drive integrated circuit (composed of 46, 56, 57 and 58) start, thereby driving the LED light source glow. At the same time, the feedback winding 72 of the hig...

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Abstract

The invention relates to an LED dimming device applied to a controllable silicon dimmer, which comprises a rectifier, a voltage zero-crossing comparator, a booster, a false load integrated controller,a high frequency transformer, a main power supply driving integrated circuit, a secondary rectification and filter circuit, a secondary power supply driving integrated circuit, a dimming informationextraction circuit, a digital signal synthesizer and a 400Hz triangular wave generator. The LED dimming device applied to the controllable silicon dimmer has the advantages of good dimming effect, long service life, simple structure, environmental protection and energy conservation.

Description

technical field [0001] The invention relates to a dimming device, in particular to an LED dimming device applied to a thyristor dimmer. Background technique [0002] In the prior art, the thyristor dimmer can adjust the brightness of the traditional tungsten bulb, see figure 1 , the conduction time of the thyristor dimmer 5 is determined by the charging time of the capacitor 9 of the circuit, thereby changing the conduction angle of the sine wave of the alternating current, changing the current of the tungsten bulb 10, and achieving the brightness adjustment effect , also known as cutting edge technology. Such as figure 1 As shown, the thyristor dimmer 5 is connected in series with the tungsten bulb 10. When the power is connected to the first moment, the current passes through the fuse 1, the inductor 2, the adjustable potentiometer 7, the resistor 8, the capacitor 9, and the tungsten bulb 10. , forming a charging circuit for charging capacitor 9, the charging time of ca...

Claims

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Application Information

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IPC IPC(8): H05B37/00H05B37/02H02M7/217
Inventor 邹德志
Owner CIVILIGHT SHENZHEN SEMICON LIGHTING
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