Positive Temperature Coefficient heater, especially for air re-heating in vehicle heating, ventilation and/or air conditioning system, is modular with separate power electronics module.

摘要

The device has power electronics and Positive Temperature Coefficient or PTC resistance elements. It is modular with at least two modules (20,40,42,44) with one module (42,44) with an arrangement of PTC resistances optimized for a first lower temperature and a second module (40) with an arrangement of PTC resistances optimized for a second higher temperature and a spatially separate power electronic module (20).