RS PRO 18mm Silver Potentiometer Knob for 4mm Shaft Splined / 499983

RS PRO Clad Spun Finish Knobs. This Potentiometer from our own RS PRO brand is designed to be used for professional equipment to control electrical devices such as volume controls on audio equipment. Features and Benefits. Resists shock, vibration, or accidental movement No special mounting hardware or tools required Made of highest quality materials Occupies minimum panel space. Applications. There are many different uses of a potentiometer. The three main applications of a potentiometer are: Comparing the emf of a battery cell with a standard cell Measuring the internal resistance of a battery cell Measuring the voltage across a branch of a circuit. How does potentiometer work?. Most potentiometer knobs are simply fixed on manually with a simple push by fitting it to the shaft. They either have a knob, screw, grub, or slider as a fixture that is used as a control element to vary the resistance between the middle terminal and either one of the outer terminals for the potentiometer. RS PRO. RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they ‘re only given the RS PRO seal of approval if we ‘re confident of their exceptional quality, which means you can be confident too.