Led street lamp design question and answer ( 1) Why the LED street lamp power supply needs constant electricity

Q: why must be constant current LED street lamp power supply instead of a constant pressure or other type of power? A: LED street lamp light source material from external environment influence light pole manufacturing especially components of heat and temperature conditions, temperature rise, LED the working voltage of the

q: why the LED street lamp power supply must be constant current instead of constant pressure or other types of power? A: LED street lamp light source material is highly affected by the external environment, especially the heat dissipation and temperature rise of components. When temperature changes, the working voltage of light-emitting diodes (leds) increases, the voltage rise inevitably lead to increased light emitting diode current. If the led street lamp worked more than rated current, light attenuation increases, led lamp bead, can greatly shorten the service life. Led street lamps constant current power supply can ensure the working current of led lights in the external environment factors such as temperature, voltage change will not change, so as to improve the stability and service life of the led street lamp.