The historical development of LED drive power supply
(1) according to the characteristics of LED, developed a series of constant voltage constant current control circuit, using integrated circuit technology will every single LED input current control in the best current value, led to obtain stable current, and produces the highest luminous flux output. LED drive power supply in the input voltage and ambient temperature and other factors to change the situation, it is best to control the size of the LED current.
(2) LED drive power supply has intelligent control function, so that the load current of LED can be controlled under the influence of various factors in the pre design level. When the load current changes due to various factors, the primary control IC can control the switch to make the load current back to the initial design value.
(3) in the control circuit design aspect, to the centralized control, the standard module, the system can expand the three aspects of development.
(4) in the limited amount of LED luminous efficiency and luminous flux, give full play to the diversity of LED color and discoloration of the development of LED lighting control circuit.