Light Emitting Diodes Flashcards
1
Q
What type of bias is required for an LED to produce luminescence?
A
Forward bias
2
Q
What determines the visible color radiated by an LED junction?
A
The materials used to construct the device
3
Q
What is the approximate operating current of a light-emitting diode?
A
20 mA
4
Q
What would be the maximum current to safely illuminate a LED?
A
20 mA
5
Q
An LED facing a photodiode in a light-tight enclosure is commonly known as a/an:
A
Optoisolator
6
Q
What circuit component must be connected in series to protect an LED?
A
Series resistor
