Method for operating a multi-stage electrical heater...

Details Method for operating a multi-stage electrical heater... Method for operating a multi-stage electrical heater...

2005-03-29

2005-03-29

Paik, S. (Department: 3742)

Electric heating

Heating devices

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

C219S484000

Reexamination Certificate

active

06872922

ABSTRACT:
A method for operating a multi-stage electrical heater comprised of several heating elements. In conventional multi-stage electrical heaters, the resistance value of the individual heating elements scatters. In order that the individual heating elements emit the same power, specifically the required nominal power, despite the scattered resistance values, the voltage on the individual heating elements is separately regulated down to the required nominal power, proceeding from a maximum electrical resistance of the individual heating elements, at which the entire applied operating voltage yields the nominal power of the individual heating elements required for operation.

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patent: 6559426 (2003-05-01), Jirmann
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patent: 1 091 621 (2001-04-01), None
patent: 1 157 869 (2001-11-01), None

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