LED street lamps must be constant flow source? No constant current source, can I?
No, I think the LED street lamp needs DC power supply.
Sure, but you have to pay a higher price! Not constant flow is generally constant pressure, you give each LED are constant pressure, then the price will be very high, and the current is not good control, easy to burn LED.
Now generally constant current power supply, if not the constant current power supply has a great damage to the lamp
