LED light Round MCPCB PCB

Why do LED lights have a circuit board?

1 layer LED Based Night Lamp has a small PCBA inside, what's the use?
Now Aluminum 2.0W LED board has become the mainstream of lighting, and there are very few households using incandescent lamps. Its main advantage is that the Aluminum 2.0W LED board is more energy-efficient. With the same light efficiency, the Aluminum 2.0W LED board consumes more than 70% less power than incandescent lamps. The life of the Aluminum 2.0W LED board is longer than that of an incandescent lamp. Anyone who has used an incandescent lamp knows that the tungsten filament inside will burn out after a short period of time. Household lighting LED lamp beads are low-voltage and small-current devices, and their work The voltage is generally about 3V, and the working current is about 20mA. Lighting the LED lamp beads requires an LED Driver Circuit, so a small PCB in the LED lamp is the LED lamp driver circuit board.
Common LED lamp drive circuit board functions
1. Simple LED lamp driving circuit board with capacitive resistance step-down, rectification and filtering methods.
This kind of low cost pcb manufacturing has a simple structure and saves costs, but the circuit is unreliable, the failure rate is high, and the life of the LED lamp is short.
2. LED constant voltage driver board.
3. LED constant current source driver board.
Summary: LED lamp beads need LED drive circuit, general LED drive circuit has constant voltage drive, constant current drive, PWM drive, etc. This is the role of LED lamp small pcb.

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