What are the LED power supply classification?
First, LED power by drive can be divided into two categories:
A. Regulated:
1, the regulator circuit to determine the parameters, the output is a fixed voltage, the output current changes with the load changes
2, although the regulator circuit is not afraid of load open, but the load is strictly prohibited short circuit
3, after the rectifier voltage changes will affect the brightness of LED
4, to make each string to stabilize the circuit to drive LED display brightness uniformity, need to add the appropriate resistance can
B. constant flow:
1, constant current drive circuit driver LED is ideal, the disadvantage is that the price is higher
2, although the constant current circuit is not afraid of load short circuit, but the load is strictly prohibited open
3, constant current drive circuit output current is constant, and the output of the DC voltage with the load resistance of the size of the different changes in a certain range
4, to limit the number of LED use, because it has the maximum withstand current and voltage.