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Thyristor Dimming for Excellent LED Lighting


Thyristor Dimming for Excellent LED Lighting Dimming is a very important technology for light sources. Because it can not only provide a comfortable lighting environment, but also can achieve energy-saving emission reduction. With the rapid growth of the LED application market, the application range of LED products will also continue to grow. LED products must meet the needs of different application environments. Therefore, LED brightness control function is also very necessary.

Although non-dimmable LED lamps still have their market. However, the use of LED dimming technology can not only improve the contrast but also reduce the power consumption. Therefore, the development of LED dimming technology is an inevitable trend. If the LED is to be dimmable, its power supply must be able to output the variable phase angle of the thyristor controller in order to make unidirectional adjustments to the constant current flowing to the LED. It is very difficult to do this while maintaining the normal operation of the dimmer, often resulting in poor performance. Flashing, uneven light, etc.

Faced with the problems of LED dimming, major companies in the industry have gradually studied high-quality LED dimming technologies and solutions. Marvell, as the world's leading semiconductor manufacturer, launched its solution for LED dimming. This solution is based on the 88EM8183, which is designed for off-line dimmable LED lighting applications and achieves a minimum 1% depth dimming. Because the 88EM8183 uses a unique primary-side current control mechanism, extremely stringent output current rectification can be achieved over a wide range of AC input.

LED lighting has become a mainstream technology. LED flashlights, traffic lights and headlights abound, and individual countries are promoting the replacement of incandescent and fluorescent lamps in residential, commercial and industrial applications powered by mains with LED lamps. However, if LED lighting is to replace the incandescent lamp as the main body of the lighting field, thyristor dimming LED technology will be an important factor.

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