Project – 1M Ohm 105 Preset Potentiometer (POT)

A potentiometer is a variable resistor with three terminals, where Two terminals are connected to a resistive element and the third terminal is connected to an adjustable round wiper. The position of the wiper determines the output voltage.

This 1M ohm compact linear Potentiometer with plastic dust-cap is suitable for bread board as well as PCB. This is center tap type so two pins will measure full 1M resistance and on third pin resistance will vary in accordance to rotation. A small flat screw driver is used for changing the value.

Pin Description of Preset Potentiometer is shown below

The two terminals of the Preset construct a fixed length resistor called a track. As the middle terminal is adjusted, it is moved along the track to give a variable potential that is a fraction of the fixed potential across the track.

Specifications of Preset Potentiometer

• Type: Trimpot Potentiometer
• Max Resistance: 1MΩ
• Max Supply Voltage: 60Vdc
• Enclosure Material: Plastic