Theory of LED Controller

                                                                                                  Theory of LED Controller

1. Theory of LED Controller--Introduction

LED lights usually contain an LED array, and the LED controller is based on a pre-set program, which can control switches in various positions in the LED light circuit, so that the LED array emits light regularly, thereby displaying specific text or graphics. These LEDs are connected together in series and should be driven by a constant current power supply, because the brightness of each LED is determined by its current, and the current must be strictly controlled to ensure the normal operation of the LED lights.

2. Theory of LED controller--classification

The LED controller is a switch that controls various positions in the LED light circuit through chip processing, and is mainly divided into the following categories:

Low-voltage LED product high-power controller ---- the general design voltage is 12V-36V, and the number of LEDs in each loop is 3-6 in series. The advantages are low voltage, simple structure and easy design; the disadvantages are: when the product scale is large, the current is large, and a low voltage switching power supply needs to be configured.

High-voltage LED product controller----The design voltage is AC/DC 220V voltage, the number of LEDs in each loop is 36-48 in series, and the current limiting methods are divided into two types: resistor current limiting and resistor capacitor series current limiting.

Low-voltage LED product serial controller----Serial controller is characterized by a large number of control channels, and uses serial signal transmission to achieve the purpose of control. Generally, the control of 512 units only requires 4 control lines.

3. Theory of LED controller

The light-emitting Theory of LED is actually very simple, but it is very difficult to adjust the light while ensuring the normal operation of the controller. The Theory of the LED controller is to realize the adjustable problem of the LED lamp, and to make one-way adjustment to the constant current flowing to the LED. In this case, the general controller will have a slow startup speed, uneven lighting, and flickering problems when adjusting the brightness.

4. The Theory of LED controller - application

We often see all kinds of advertising signs and billboards on the streets. Because we do not use LED controllers, we cannot control the length of flashing time, the speed of flashing, and so on. The LED controller can easily and simply solve these problems, because it can control the switches of various positions in the LED lamp circuit, so that the LED array emits light regularly, thereby displaying specific text or graphics. At the same time, the cost is low and can better serve our customers. At present, various lighting equipment such as outdoor billboards, lighting decoration of buildings, indoor decorative lighting, etc. have a large number of applications of LED controllers in various occasions.