Temperature control that defects voltage drop across excitation

Details Temperature control that defects voltage drop across excitation Temperature control that defects voltage drop across excitation

1997-01-27

1998-09-01

Leung, Philip H.

Electric heating

Inductive heating

With power supply system

219618, 219672, 399329, 399335, 399338, H05B 606, H05B 610, G03G 1520

Patent

active

058013598

ABSTRACT:
A temperature detecting apparatus, includes an excitation coil magnetically couplable with metal layer of a heater, the excitation coil being supplied with an AC electric energy; and a detector for detecting a voltage drop, across the excitation coil, which changes with temperature of the heater. The metal layer has a metal ring and the excitation coil is magnetically connected with the metal ring.

REFERENCES:
patent: 2898435 (1959-08-01), Crafts
patent: 4317979 (1982-03-01), Frank et al.
patent: 4570044 (1986-02-01), Kobayashi et al.
patent: 4668851 (1987-05-01), Kupper
patent: 5247336 (1993-09-01), Mills, III
patent: 5568235 (1996-10-01), Amarakoon
patent: 5568240 (1996-10-01), Ohtsuka

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