Improvements relating to electrically heated water boiling vessels

A thick film heating element having a portion of its resistive track within a defined part of the surface area of the heating element formed of a material having a negative temperature coefficient of resistance (NTCR) and having the main part of the track formed of a material having a positive tempe...

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Bibliographic Details
Main Authors J.A. HOWARTH, R.A. O'NEILL
Format Patent
LanguageEnglish
Published 31.10.2001
Edition7
Subjects
APPARATUS FOR MAKING BEVERAGES
COFFEE MILLS
DOMESTIC ARTICLES OR APPLIANCES
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
FURNITURE
HUMAN NECESSITIES
KITCHEN EQUIPMENT
SPICE MILLS
SUCTION CLEANERS IN GENERAL
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Summary:A thick film heating element having a portion of its resistive track within a defined part of the surface area of the heating element formed of a material having a negative temperature coefficient of resistance (NTCR) and having the main part of the track formed of a material having a positive temperature coefficient of resistance (PTCR), the arrangement being such as to compensate, at least in part, for the effect of different supply voltages upon the operating temperature of said track portion.
Bibliography:Application Number: CN19998011579