ThinPot Potentiometers

The ThinPot membrane potentiometer from Spectra Symbol is a resistive element comprised of a conductive resistor, sealed encasement and simple wiper assembly. The device can also function as a voltage divider. The ThinPot is a three-wire system with two resistive output channels and an electrical collector channel. By pressing a wiper down onto the top circuit the ThinPot produces the desired electrical output. The "wiper" is a non-conductive mechanism that depresses the top circuit actuating the potentiometer from the outside of the element. The top and bottom circuits are separated by 0.15 mm (0.006 in) of spacer adhesive build-up and contact between the circuits occurs by pressure (usually 0.7-1.8 Newtons) from the wiper on the top circuit, pushing down until the top circuit connects with the bottom circuit to create a potentiometric output.