Energy saving lamp price

LED lights be used on a large scale in the city, we usually only say LED street light is good, but not its drawbacks, it more dazzling light compared with the traditional street lamps, LED lights before leaving the factory, the LED street lamp manufacturers need to move light processing it. So the LED street lamp

the LED street lamp is widely used in the city. We often say good led lights, but we don't say their shortcomings. In fact, their light is better than the traditional street lamp. LED street lamp manufacturers need to dim them before they go out. Light emitting diode lamp dimming method have? First of all, the dimming method is done through modulation led drive current leds light dimmer. Because of the brightness of the light emitting diode chip and led drive current into a certain proportion, we can adjust the light emitting diode drive current to control the brightness of the light emitting diode lamp. The second:

the dimming method is called analog dimming method or linear dimming method. The present invention has the advantage that when the drive current linear increase or decrease, reducing the drive current overshoot process influence on life of light-emitting diode chip, and the dimming circuit has strong resistance to interference. Defect is drive current changes will inevitably affect the color temperature of light emitting diode chip. Third, the dimming method is called the pulse width modulation. The method with variable pulse width by adjusting the drive current of square wave shape, and modulation pulse width modulation continuous light leds light time, changing the input power at the same time, so as to achieve the goal of energy saving and the dimming. Usually between 200 hz to 10 hz frequency. Due to the human eye visual lag, don't feel in the process of dimming light flashing phenomenon. The dimming method has the advantage that can improve the heat dissipation performance of light-emitting diodes (leds). The disadvantage is that drive current overshoot will certainly affect the service life of light emitting diode chip.