Air current interruption detection responsive to consumed...

Details Air current interruption detection responsive to consumed... Air current interruption detection responsive to consumed...

2005-05-24

2005-05-24

Jeffery, John A. (Department: 3742)

Electric heating

Heating devices

With power supply and voltage or current regulation or...

C219S202000, C392S360000

Reexamination Certificate

active

06897416

ABSTRACT:
A heating system with PTC heating elements heats a medium that flows. In order to avoid unnecessary heating up of the PTC elements when the streaming fails, the required heat output that is to be generated by the PTC elements is compared to the electrical power actually consumed and, if a specified threshold value is under-run, the required heat output that was set is reduced accordingly.

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