What is the difference between LED switching power supply and ordinary switching power supply?

2019-07-02 22:36:52

What is the difference between LED switching power supply and ordinary switching power supply?

 

The biggest difference is that the LED power supply is a constant current source, and the general switching power supply is a constant voltage source. The difficulty in designing LED switching power supplies is volume and price. LED power supply first: 1 requires a cross flow. 2 low temperature, low heat and long life. 3 small volume. 4 waterproof, anti-corrosion and anti-static. 5 high frequency pollution. Ordinary power supplies and low-quality LED power supplies have high frequency pollution, and the output DC is complicated even with the addition of inductance and large capacitance filtering. Poor power supply, the power supply itself may not be bad, but the LED life and light decay are greatly reduced.