LED驱动的电路理论考量：电压源与电流源驱动的对比

Light-emitting diodes (LEDs) are solid-state devices with specific $v$–$i$ characteristics. In this paper, we study the basic requirement of the driving circuits and discuss the proper approach to drive LEDs in view of their characteristics. We compare voltage source driving and current source driving, and discuss their relative advantages and constraints. We specifically introduce the use of circ...