The classification of the LED drive power supply - 2018
06 LED drive power is the power supply is converted into a certain voltage current to drive the LED voltage converter.
This article introduces the classification of the LED drive power supply.
The classification of the LED drive power supply: constant current, constant current drive circuit, the output current is a constant, and the output of dc voltage is as the load resistance of different size changes within a certain range, load resistance is small, the output voltage is low, the greater the load resistance, the higher the output voltage.
B, does not fear the load constant current circuit short circuit, but it is forbidden to load completely open;
C, LED constant current drive circuit drive is ideal, but relatively high prices;
D, should pay attention to use maximum current and voltage, it limits the number of using leds.
Constant pressure type a, when the constant voltage circuit, to determine the various parameters of the output voltage is fixed, and the output current is as the load increase and decrease and change;
B, regulating circuit are not afraid of open load, but it is forbidden to load completely short circuit;
C, with voltage driving circuit to drive the LED, each string need to add the appropriate resistance can make average a string of LED display brightness;
D, brightness will be affected by rectification of voltage change.