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Voltage induction type dimming control system and voltage induction type dimming control method thereof

A technology of dimming control and voltage sensing, which is applied in the field of voltage sensing dimming control system and its control, and can solve the problems that light-emitting diode lighting devices cannot use power supply circuit architecture, cost increase, and circuit design complexity.

Inactive Publication Date: 2013-04-03
DELTA ELECTRONICS INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the LED lighting device cannot use the existing power supply circuit structure, and adding a dimming controller will increase the overall cost and complicate the circuit design

Method used

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  • Voltage induction type dimming control system and voltage induction type dimming control method thereof
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  • Voltage induction type dimming control system and voltage induction type dimming control method thereof

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Embodiment Construction

[0030] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the description in the following paragraphs. It should be understood that the invention is capable of various changes in different aspects without departing from the scope of the invention, and that the description and drawings are illustrative in nature and not limiting. this invention.

[0031] figure 1 A block diagram showing a voltage-sensing dimming control system according to a preferred embodiment of the present invention. As shown in the figure, the voltage-sensing dimming control system 10 includes a power circuit 100 , wherein the power circuit 100 includes a power converter 120 , an output current sensor 160 , an input voltage sensor 180 and a feedback control circuit 140 . The power converter 120 will input AC voltage V in converted to output DC voltage V out with output DC current I out , to drive the LED lighting device (not shown). The o...

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Abstract

The invention discloses a voltage induction type dimming control system and a voltage induction type dimming control method thereof. The voltage induction type dimming control system comprises a power supply circuit, wherein the power supply circuit comprises a power supply converter, an output current sensor, an input voltage sensor, and a feedback control circuit; the power supply converter is used for driving an illuminating device by a power supply; the output current sensor is used for sending the output current of the power supply converter to generate a sensing output current; the input voltage sensor is connected to the input end of the power supply converter and is used for sensing an input voltage of the power supply converter to generate a sensing input voltage; and the feedback control circuit is used for outputting a dimming control signal to control the switch handover of the power supply converter so as to regulate the output current of the power supply converter. According to the voltage induction type dimming control system, when the input alternating current voltage of a power supplier of a light emitting diode illuminating device changes within different voltage ranges, the power supplier of the light emitting diode illuminating device outputs different constant voltages or constant currents to the light emitting diode illuminating device so as to control the brightness of the light emitting diode illuminating device to achieve the function of regulating the brightness of the light emitting diode illuminating device.

Description

technical field [0001] The invention relates to a dimming control system, and in particular to a voltage-sensing dimming control system and a control method applied to a light-emitting diode lighting device. Background technique [0002] In recent years, due to breakthroughs in light emitting diode (Light Emitting Diode, LED) manufacturing technology, the luminous brightness and luminous efficiency of light emitting diodes have been greatly improved, and light emitting diodes have the characteristics of energy saving, environmental protection, and long life, so that light emitting diodes gradually replace commonly used Light tubes or light bulbs become new lighting devices, which are widely used in applications such as street lights, household lighting devices, car lights, display panel backlights, traffic signal lights, and signage boards. [0003] Existing road lighting is generally driven by high pressure sodium lamps and their applicable power supply circuits. In order ...

Claims

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Application Information

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IPC IPC(8): H05B37/02
CPCY02B20/42Y02B20/40
Inventor 吴享珍陈肇彬
Owner DELTA ELECTRONICS INC
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