Wb4-3

This document discusses potentiometers and their use in electronic circuits. Potentiometers are variable resistors that can be used as voltage dividers to provide an output voltage that is a fraction of the supply voltage. Proper resistor values are needed to avoid loading errors that occur when the resistance connected to the potentiometer output is too low compared to the potentiometer resistance. Potentiometers are also used in temperature sensors, strain gauges, and other electronic applications.