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Multi-dimming input circuit

A technology of input circuit and dimming, applied in the direction of electric lamp circuit layout, light source, electric light source, etc., can solve the problems of circuit damage and dimming function failure.

Active Publication Date: 2012-01-11
MEANWELL GUANGZHOU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At the same time, due to the above-mentioned different types of dimming controllers, the dimming drive circuit often needs to adjust different circuit input designs accordingly in order to receive different types of input control signals, thereby driving light sources (such as LED lamps) with different power designs. ), when the dimming controller cannot correspond to the drive circuit on the lamp, it may cause the dimming function to fail or cause circuit damage

Method used

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Embodiment Construction

[0032] In order to better understand the contents of the present invention, the present invention will be further described below in conjunction with the accompanying drawings.

[0033] Due to different manufacturers or different circuit design considerations, the output signals of dimming controllers on the market also have various output specifications. The control signals generated by common dimming controllers are mainly divided into the following three types:

[0034] (1) Analog voltage input:

[0035] Usually it is an analog voltage input of 1V~10V (or 0v~10v). The voltage level is used to represent different brightness levels. Since the output signal is also in analog mode, if the input is 1~10V input, the circuit only needs to be amplified. Or attenuation, easing. There is no big problem in design;

[0036] (2) Pulse width modulation signal:

[0037] It is usually a PWM signal between 12v and 24V, and different duty cycles of the PWM input signal are used to repres...

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Abstract

The invention provides a multi-dimming input circuit for generating an analog voltage and outputting the analog voltage to a dimming driving circuit. The multi-dimming input circuit comprises an input terminal, an output terminal, a constant current source, a voltage regulating unit and a filter unit.

Description

technical field [0001] The invention relates to a multiple dimming circuit, in particular to a dimming input circuit with multiple input modes. Background technique [0002] At present, lighting fixtures have become a necessity of life, which can provide lights at night, or be used as indicators, safety warnings, etc. With the development of society and economy, big cities are brightly lit no matter day or night, and a large number of lighting devices gradually burden the power supply. [0003] Under normal circumstances, lighting fixtures are often used at the highest energy consumption and highest brightness, regardless of the number of users, what they are used for, and the surrounding environment is bright and dark. Therefore, it will bring a lot of waste of energy, reduce the life of the bulb and generate more waste heat. [0004] Recently, most energy-saving lamps can be used with dimming controllers to change the output brightness. By controlling the dimming contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 彭希和
Owner MEANWELL GUANGZHOU ELECTRONICS