Working Principle And Application of LED Controller

LED lights usually contain an LED array. The LED controller can control the switch of each position in the LED light circuit according to a preset program so that the LED array can emit light regularly and display specific text or graphics. These LED lights are connected in series and should be powered by a constant current power supply. The brightness of each LED light is determined by its current, which must be strictly controlled to ensure LED lights can work properly.

Ⅰ. Classification of the LED controller 

The LED controller can control the switch of each position in the LED light circuit by chip processing. It is mainly divided into the following categories:

1. High-power controller for low-voltage LED products 

In general, the designed voltage by LED lights wholesale suppliers is 12V-36V, and the number of LEDs in each loop is 3-6 in series. The advantage is its low voltage, simple structure, and it is easy to design. The disadvantage is that the current is large if the production scale is large, and a low voltage switching power supply is required.  

2. High-voltage LED controllers 

The designed voltage is AC and DC 220V, and each loop LED has 36-48 series. The current limiting method is divided into resistance current limiting and resistor-capacitor series current limiting. 

3. Serial controller for low-voltage LED products 

Many control channels characterize the serial controller, and the serial signal transmission is used for controlling. In general, the control of 512 units only needs four control lines. 

Ⅱ. The working principle of the LED controller  

The light-emitting principle of outdoor LED light controller is very simple. However, it isn't easy to achieve dimming while ensuring the regular operation of the controller. The principle of the LED controller is to solve the adjustable problem of LED lights, and it is needed to adjust the constant current flowing to LED lights in one direction. In this case, the controller will have a slow start, uneven light, and flash while adjusting the brightness.

Ⅲ. Application of the LED controller 

Various advertising and billboards on the street cannot control the length of flashing time and the speed of flashing since there is no LED controller. The LED controller can solve these problems easily. Since it can control the switch of each position in the LED light circuit, the LED array can emit light regularly to show specific text or graphics. At the same time, the cost is low, and it can better serve customers. Nowadays, LED controllers are widely applied in lighting equipment such as outdoor billboards, building lighting decoration, indoor decorative lighting.