A = consistent, good-quality patient-oriented evidence; B = inconsistent or limited-quality patient-oriented evidence; C = consensus, disease-oriented evidence, usual practice, expert opinion, or case series.
An LED driver is the power supply for an LED system, much like a ballast is to a fluorescent or HID lighting system, says Al Marble, manager - sales & market development for Philips-Advance Transformer.
Cancel. The definition of LED is light emitting diode, which is now used in traffic lights, tail lights, alarm clocks, flashlights and many other products. Find out how LEDs save energy with helpful information from a digital lifestyle specialist in this free video on electronics.