What is the main difference between constant current and constant voltage of led display?
The main difference between constant current and constant voltage of led display:
The output current of the constant current drive is constant, but the output DC voltage will vary within a certain range with the load resistance. The smaller the resistance is, the lower the output voltage. The larger the resistance, the output voltage is also The higher it is.
The constant voltage drive is that its output voltage is fixed, but its output current will change with the increase or decrease of the load.
Generally speaking, products driven by constant current will be better and more expensive at the same time. Because of the constant current drive product, it has more circuits and chips, so that the current can be kept constant, which increases the service life and stability of the LED display.