Question
Download Solution PDFWhat is the forward voltage of LED?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it.
- The forward voltage of an LED, VF, is the voltage that must be applied across the leads of the LED, from anode to cathode, in order for the LED to turn on.
- Typically, the forward voltage of an LED is between 1.8 and 3.3 volts.
- It varies by the color of the LED.
- A red LED typically drops around 1.7 to 2.0 volts.
- Since both voltage drop and light frequency increase with band-gap.
- A blue LED drops around 3 to 3.3 volts.
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