Dimming circuit and method

A dimming circuit and circuit technology, applied in the direction of light source, electric light source, electrical components, etc., can solve the problem that the price of gas discharge lamps cannot be effectively reduced, and the unit price is high.

Inactive Publication Date: 2015-06-10
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most of the traditional segmented dimming gas discharge lamps use an integrated circuit (IC) to control different power outputs, and then control the brightness of the gas discharge lamp to achieve the purpose of energy saving. However, due to the integrated circuit (IC) High unit price, unable to effectively reduce the price of gas discharge lamps

Method used

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  • Dimming circuit and method

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Embodiment Construction

[0018] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any sequence, quantity or importance, but are only used to distinguish different components. Likewise, words like "a" or "one" do not denote a limitation in quantity, but indicate that there is at least one. Words such as "comprises" or "comprising" and similar terms mean that the elements or items listed before "comprising" or "comprising" include the elements or items listed after "comprising" or "comprising" and their equivalents, and do not exclude other component or object. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0019] figu...

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PUM

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Abstract

The invention relates to a dimming circuit. The dimming circuit comprises an alternating current-direct current conversion circuit and a direct current-alternating current conversion circuit, wherein alternating current-direct current conversion circuit is used for converting alternating-current voltage into direct-current voltage, and the direct current-alternating current conversion circuit is used for converting the direct-current voltage into the working voltage of a lamp. The direct current-alternating current conversion circuit comprises a drive circuit used for providing drive voltage between a reference contact and a control contact and a conversion circuit which is coupled to the drive circuit and comprises at least one switch. The dimming circuit has the advantages that at least one electric parameter between the reference contact and the control contact is adjusted to change the working frequency of the direct current-alternating current conversion circuit so as to adjust the brightness of the lamp; each electric parameter selected from one inductance parameter and one capacitance parameter; the dimming circuit provides simple circuit connection, and dimming is achieved by changing the electric parameters between the reference contact and the control contact.

Description

technical field [0001] The invention relates to a dimming circuit and a dimming method, which can be used for gas discharge lamps or other lamps of the same type, in particular to a dimming circuit capable of three-way dimming and the application of the dimming circuit Dimming method of dimming circuit. Background technique [0002] In order to meet the needs of different lighting application conditions and the goal of energy saving and emission reduction, various dimming ballasts that can control the brightness change of gas discharge lamps have appeared. [0003] The gas discharge lamp changes the current flowing through the gas discharge lamp by changing the operating frequency of the ballast driving the gas discharge lamp, thereby achieving the purpose of adjusting the brightness of the gas discharge lamp. The core of the dimming ballast can be attributed to the frequency control of the ballast inverter. By controlling the oscillation frequency of the internal inverter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/38
Inventor 朱成花
Owner GENERAL ELECTRIC CO
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