Piher sensing systems - custom potentiometers and position sensors



ST15 360º endless rotation potentiometer
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ST15 360º endless rotation potentiometer

potentiometer for household appliances

Piher’s ST-15 series offer engineers an endless rotation version of the popular PT15 rotary control/sensor potentiometer. This new 360º version adds endless clockwise (CW or CCW) rotation as a part of the current features of the PT15s already highly configurable mechanical and electrical specifications. That means a wide variety of off-the-shelf mounting methods, custom ohmic (resistance) values, tight linearity performance, along with the 7 different rotor designs and 15 standard shaft styles.


Main features

  • Mechanical rotation angle: 360º
  • No stops, can be turned infinitely Clock Wise or CCW
  • Electrical feedback range: Angles up to 340º
  • Mechanical life: up to 200K cycles
  • Can meet UL Standard 94 V-0 for flame retardant applications
  • Multiple mounting methods available (Vertical or Horizontal)
  • Cost-effective appliance control / program selector
  • Avoids broken end stops by excessive adjustment force
  • Up to 51 Detents available (custom designs upon request)

This potentiometer, already popular in hundreds of white goods, appliance & automotive panel control and sensing applications, now offers product designers the flexibility of allowing users full rotational access across the normal stops that have, up to now, limited mechanical rotation.  With this new design feature, engineers can now design product command features over a 340º range (active electrical travel).

For maximum design versatility, the endless rotation feature can be combined upon request with detents to provide users tactile feedback on each setting and selection – with up to 51 unique and highly repeatable detent positions. Virtually any appliance rotary control requirement can be configured using the PT-15s wide range of standard features.  Other interesting optional features include flame-retardant plastics (meets UL Standard 94 V0), detents, rotors and shafts, long cycle life, SMT mounting and custom electrical angles.

Engineered to serve as a highly cost-effective control potentiometer for most consumer applications such as ovens, ranges, dishwashers, power hand tools, washing machines and HVAC systems, it also can fit many automotive convenience electronic applications.


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