Dimming methodLED flood light

The Outdoor Light LED Projector Flood Lamp generally uses the 512 controller to control the lighting program, but with the development of technology, it can also be realized by LED dimming, linear dimming or pulse width modulation dimming.

1. LED dimming. The LED driving current is adjusted to realize the dimming of the A

2. Linear dimming. When the driving current increases or decreases linearly, the influence of the strong immunity of the LED chip control circuit on the overshoot of the driving current will be relatively reduced. The disadvantage is that the change of the driving current will have a certain influence on the color temperature of the LED chip.

3. Pulse light modulator (PWM) mode makes the driving current square and variable pulse width through certain control. By adjusting the duration of the pulse width, the output power can also be changed at the same time, to achieve the purpose of energy saving. Frequency conversion speed regulation is typically adjustable LED Projector Light, because the brightness of the LED chip and the LED driving current have a fixed ratio.Hz to 10kHz. This method can improve the heat dissipation problem of the LED IP65 Led Floodlight, but has a certain influence on the life of the LED chip.

The above three dimmer methods are classified according to the output control of the LED drive current. The control circuit can also be divided into analog control and PWM control. The control circuit is usually done by a microcontroller.

With the development of technology, when lifespan and reliability issues are resolved, to a certain extent, LED lighting applications will inevitably move towards the pace of intelligent dimming systems. LED flood light intelligent control should have manual control, intelligent control, lighting control, time control and fault alarm functions.