LED lamps and lanterns that move light LED lamps and lanterns that move light method the main, there are three kinds of common, these three skills that move light are according to the change of the LED drive current input for dimmer.
According to the different circuit system can also be divided into imitation dimmer and PWM dimming.
First: this kind of dimming method is done through modulation of LED drive current LED lamp dimming, due to the brightness of the LED chip and LED drive current into a certain proportion to do, so we can adjust the LED drive current control LED lamp shade.
The second: the dimming method called pulse width modulation (
This kind of method is through adjusting the drive current square shaped, the variable pulse width, the modulation of pulse width modulation into continuous light LED lights, also changed the input power at the same time, thus reach energy-saving and dimmer.
Frequency as usual in about 200 hz to 10 KHZ;
Because people's eyes visual lag, don't feel light source in the process of that move light shine.
This method has the advantage of that move light LED heat dissipation performance can be improved and the overshoot is drive current defects on must have a certain effect on the lifespan of the LED chip lamps and lanterns of the township 'in China, the product design and development in a dozen' energy saving 'brand, continuous application of new energy conservation and environmental protection technology to develop products to adapt to the market demand.
The third: the dimming method called imitation method that move light or linear dimming method.
The advantages of this kind of dimming method is: when the drive current linear growth or decrease hours, reduced the drive current overshoot in the process of impact on life of the LED chip, and the dimming circuit nuisance resistance stronger.
Its defect is the size of the drive current change process is sure to color temperature of LED chip has certain influence.
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