Common three kinds of LED lamps and lanterns that move light technology
LED lamps and lanterns that move light dimming technology generally has the following three types: common one, LED dimming technology to adjust the LED drive current to achieve the LED light bulb lamp, because of the brightness of the LED chip and a fixed proportion relationship with the LED drive current.
Second, LED dimming technology is usually referred to as analog dimming mode or linear dimming mode.
The advantage of this kind of dimmer way is: when the drive current linear increase or decrease, relatively reduced the drive current overshoot in the influence on the LED chip, control circuit anti-interference performance is stronger.
The downside is the size of the drive current change, will have certain influence to the color temperature of LED chip into the LED.
Three, LED dimming technology is pulse light modulation (
This kind of way is through certain control make the drive current square shaped, the variable pulse width, through the adjustment of pulse width change the duration lit LED lights, also changes the output power at the same time, so as to achieve the goal of energy saving.
Frequency control in commonly 200 hz to 10 KHZ, due to people's eyes visual retention, don't feel light source in the process of that move light flashing.
This method has the advantage of that move light can improve the heat dissipation of LED, the disadvantage is that the drive current overshoot to have certain effect on the lifespan of the LED chip LED lamp bead.
Above 3 kinds of LED dimming technology are classified according to the LED drive current the output control.
Control circuit can also be divided into analog control and PWM control, the control circuit is usually done by micro controller.
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