When you turn down or up the volume on devices with either a wheel or button, what actually happens that allows it to sound quieter or louder?

Question

When you turn down or up the volume on devices with either a wheel or button, what actually happens that allows it to sound quieter or louder?

In: Technology

Answer 1

It’s a wheel that literally changes the resistance of the circuit. There are rheostats and potentiometers. Pots generally control voltage, rheostats control current. There is a distinction, and it mostly matters when you’re using AC or DC. Basically, you’re increasing, or decreasing resistance.