For several decades, Contelec has been involved in the development and manufacture of wire wound and cermet potentiometers. This extensive experience has led to extremely reliable products. High-quality wire wound and cermet potentiometers are primarily suitable for use as ‘adjustable potentiometers’ in which the user specifies the required value. To a limited extent – in cases where the life expectations are not too high – they are also suitable for control applications.
The resistance wire/cermet resistance and the wiper system are accurately matched to ensure maximum reliability throughout the entire lifetime of the system.
Cermet potentiometers – the principle
Using a screen-printing process, a thick coating of metal/metal oxide is printed onto a ceramic carrier material. This layer is hardened at high temperature. A wiper contact slides on the coating and picks up the voltage signal at the relevant point. Due to the operating principle, the resolution is infinite.
Automotive / Motor Sports
Heating / ventilation / air conditioning