About this document
LED Forward Voltage and Resistor Guide by Petzl Marius is a document available to read on EtoBox.
The document discusses how to use an NPN transistor to drive multiple LEDs from a microcontroller output. It provides the equations to calculate the current limiting resistor value based on supply voltage, LED forward voltage, and forward current. It also describes how to calculate the power rating of the resistor. Examples are given demonstrating how to select appropriate resistor values and power ratings for driving one or more LEDs in series from a supply.
- Author
- Petzl Marius
- Language
- EN