Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1986-09-10
1988-04-05
Paschall, M. H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219501, 219508, 219497, 323235, 307647, A05B 102
Patent
active
047360917
ABSTRACT:
Integral sensor controller for an electrical resistance heater, where the heater is constructed from materials such as nickel, balco, platinum, alumel, or like materials which have an appreciable, positive temperature coefficient of resistivity. The resistance versus temperature characteristic of the heater acts as the temperature sensor. A low level D.C. current provides a sensor voltage which is compared to a set point voltage for switching the heater power through a transistor. The relationship of the sensor voltage to the set point voltage is compared by a comparator which is subsequently used to toggle flip flops for switching of the heater power. Circuitry is provided for protection against heater short circuits.
REFERENCES:
patent: 3700933 (1972-10-01), Harkenrider et al.
patent: 3745308 (1973-07-01), Leffets
patent: 3758844 (1973-09-01), Harkenrider et al.
patent: 3789190 (1974-01-01), Orosy et al.
patent: 4002882 (1977-01-01), McCutchen
patent: 4546238 (1985-10-01), Ahs
patent: 4554439 (1985-11-01), Cross et al.
patent: 4567353 (1986-01-01), Aiba
patent: 4594501 (1986-06-01), Culley et al.
patent: 6765046 (1972-07-01), Harkenrider et al.
Jaeger Hugh D.
Paschall M. H.
Watlow Winona, Inc.
LandOfFree
Integral sensor controller for an electrical heater does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integral sensor controller for an electrical heater, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integral sensor controller for an electrical heater will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2234871