LED is the abbreviation of “Light Emitting Diode”, the Chinese abbreviation of light-emitting diodes, because of its energy saving, long life, high photoelectric efficiency, good seismic performance, in recent years to the rapid development of the theory, LED life of 100,000 Hour, but in the practical application process, some LED lighting designers on the LED drive power or lack of excessive pursuit of cost, and ultimately to LED lamp product life greatly shortened, many advantages are covered.
In the LED lighting, there are many ways to connect. One LED aluminum plate, LED drive power line serial and parallel principle there are many, need to combine multiple LED arrangement, reliable LED connection to improve the efficiency of LED lights and life play a significant role.
The current method of connecting LED lights are: the overall series form, with parallel zener diode series form, the overall parallel form, independent matching parallel form, mixed form, the first string after, first and then string, cross arrangement and so on.
LED drive power is the key to LED lighting, it is like our human heart, to create high-quality LED lamps must learn to “let go”, that is no longer choose constant pressure way to drive LED lamps.
A lot of design LED lighting staff, the use of resistance, capacity step-down, and then add a Zener diode regulator, to the LED power supply, so that there is a great way to drive LED, not only inefficient, but also in the buck resistor consumption A lot of power, and even may exceed the power consumption of the LED.
Constant current source drive is the best way to LED drive, the use of constant current source drive, do not have the output circuit series current limiting resistor, LED current flowing through the outside power supply voltage changes, ambient temperature changes, and LED parameter dispersion Influence, so as to maintain a constant current, give full play to the various excellent characteristics of LED.
The use of constant current drive not only to LED lamps to play its normal role, and there is no danger. At the same time, but also the life of LED lamps without damage, really threefold!