LED lighting device

LED lighting device divide into low power（IF=15-20mA）and high power （IF>200mA）base on led power. the low power led generally use in led Fluorescent lamp, decorative lamp, grille lamp; and the high power led that can be use for Household lighting lamp, spotlight, underwater lamp, wall washing lamp, street lamp, tunnel lamp, automobile work lamp.
The led lighting device if device of low voltage and big current . so the currently of led was decide that led luminous intensity. if this is the case , the input currently are to strong will effect  the led luminous attenuation. the input currently are to small that would interfere with led luminous intensity.
In summary , the electricity designer chose that led constant currently source to drive LED which we considered right.