Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1979-09-17
1981-06-09
Goldberg, Elliot
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219212, 219504, 219528, 219518, 340310A, H05B 102
Patent
active
042726719
ABSTRACT:
A temperature control system for electric surface heater of piled layers of a heating element across which a commercial AC source current is fed and a thermosensitive electrode opposing the element through thermosensitive element showing negative impedance characteristics with temperature rise. In the system, an AC signal voltage different from the source current is applied between the heating element and the thermosensitive electrode, and excessive variations in the signal voltage responsive to the negative impedance of the thermosensitive element is detected to disconnect or connect the heating element and the source.
REFERENCES:
patent: 3103573 (1963-09-01), Niehaus
patent: 3270184 (1966-08-01), Negromanti
patent: 3330936 (1967-07-01), Fickweiler
patent: 3400251 (1968-09-01), Coyle et al.
patent: 3462585 (1969-08-01), Somers
patent: 3697812 (1972-10-01), Hehl
patent: 3972471 (1976-08-01), Ziegler
patent: 4074335 (1978-02-01), Takasugi
patent: 4093847 (1978-06-01), Walker et al.
patent: 4186873 (1980-02-01), Geisler et al.
Endo Terumi
Hukagawa Hitoshi
Naruo Masayuki
Shimada Isao
Goldberg Elliot
Matsushita Electric & Works Ltd.
Paschall M.
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