Does an LED light need a ballast?
Leds don't need a ballast, the big power leds are powered by power, and it's typically powered by 1W, 3W, 5W, 9W, 12W, 15W, 18W, these are wall lamps,
Leds need ballast, but they require constant current drives. To stabilize the current flowing through the LED. Prevent current LED from overheating.
The sky lamp 25W, 30W, these are usually the yard lights 60W, 80W, 120W, which are used on street lamps; Like our usual LED flashlight, do not drive the power supply, directly to the battery or the battery, and, of course, add a certain amount of current resistance
