Regarding the knowledge of LED driving power, the constant current LED driver supplier simply shares some basic knowledge as a lighting distribution practitioner. I hope it is helpful to everyone. What is LED driving?
In general, LED drive power is a converter. Its function is to convert our commonly used city power or other power sources to the voltage and current suitable for LEDs. Through its conversion, LEDs can work normally and emit light. It is like we have to open For a nut, you must use a wrench of the same type.
The function of the LED driver is no different from the ballasts of quartz lamp cup transformers, fluorescent lamps, energy-saving lamps, and metal halide lamps that we have used in the past. They are all designed to make the light source products work stably. So it is often called led Ballasts, led transformers, etc., but led practitioners generally still call drivers. One is to distinguish them from other converters, and the other is because the working principles of the three are different. The three can show that we are professional. So Going down, we all use LED driver to express.
Type of LED driver:
There are two types of led lamp drivers commonly used in the market according to the driving method. One is constant current driving. The characteristics of constant current driving are that the output current is constant and the output voltage varies within a range. So we often see the driver in the market. The casing of the device is marked.This means the output voltage is in a certain range and the current is how many milliamps.
The other is constant voltage drive. The characteristic of constant voltage drive is that the output voltage is fixed, and the current varies with the number of lamps connected within the maximum value. Generally, it will be marked on the housing (output: DC ** V ** A) It refers to how many volts the output is fixed and what is the maximum output current. It is common in the led market to output 5V, 12V, 24V, etc.
Constant Current Led Driver
Application of constant current LED driver:
The application of LED driving depends on the led parameters we want to drive. The two most important parameters are the input voltage and input current. How to calculate the input voltage and current of led lamps, Fanlong lamps are equipped with a separate description. Here only said I know the input of the led light. If you don't know, you can also choose to ask the supplier of the lamp beads, or look at the parameters of the original drive.
After knowing the input voltage and input current of the lamp board, we can choose the corresponding led driver to use. For example, the following situation. It is known that the input voltage of the lamp board is 37-40V and the input current is 300mA, then you can choose the LED driver output The voltage includes it, and the current is similar. In terms of matching, the voltage is not higher or lower, it must be included. Otherwise, it will flicker. The lower current does not matter.
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