OUR EXPERT
Les Pounder is associate editor at Tom’s Hardware and a freelance maker for hire. He blogs about his adventures and projects at bigl.es.
Electronics are all digital, right? Nope – some electronics components work with analog signals. These signals are continuously running and are typically a variable voltage. Such components include thermistors (a variable resistor whose resistance varies depending on temperature) and photosensors (a variable resistor whose resistance changes depending on light levels).
The most common analog electronic component is the potentiometer. This is a variable resistor that changes resistance based on the user turning a knob. A common potentiometer has a value of 10
