The first commercial Light Emitting Diode (LED) was introduced in the 1960’s. From its
early beginnings as a low intensity red light, the LED has
emerged as a highly versatile component, critical to a wide variety of
applications.
Powering
LEDs
LEDs are current controlled semiconductor devices. The intensity of the light output is proportional to the current flowing through the junction. Care must be taken to observe the correct polarity of the LED and not to exceed the maximum current rating. In either case, catastrophic damage to the LED may occur. The voltage flowing in the circuit has to be enough to provide the forward drop required by the LED (or LED’s) connected.
LEDs are current controlled semiconductor devices. The intensity of the light output is proportional to the current flowing through the junction. Care must be taken to observe the correct polarity of the LED and not to exceed the maximum current rating. In either case, catastrophic damage to the LED may occur. The voltage flowing in the circuit has to be enough to provide the forward drop required by the LED (or LED’s) connected.
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