Power control for appliance using high inrush current element

Details Power control for appliance using high inrush current element Power control for appliance using high inrush current element

1979-02-01

1980-11-11

Kozma, Thomas J.

Electric heating

Heating devices

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

219492, 219486, 219506, 219464, 219483, 307 38, 307 41, 340711, 323 25, H05B 102, H05B 368

Patent

active

042334985

ABSTRACT:
A power control method and system for a cooking appliance using a high inrush current element in which the instantaneous glow from the heater element is utilized to inform the operator of appliance turn-on. The power control includes a logic arrangement for detecting the transition of the appliance from an OFF condition to a selected one of a plurality of power level settings. Prior to energizing the heating element at the selected power level, the control energizes the element for a preselected transient time at a level to produce a visible glow.

REFERENCES:
patent: 3541429 (1970-01-01), Martin
patent: 3878358 (1975-04-01), Barton et al.
patent: 3912905 (1975-10-01), Giler
patent: 3974472 (1976-08-01), Gould, Jr.
patent: 4010412 (1977-03-01), Forman
patent: 4046991 (1977-09-01), Sefton et al.
patent: 4078168 (1978-03-01), Kelly
patent: 4086466 (1978-04-01), Scharlack
patent: 4104715 (1978-08-01), Lawson, Jr.
patent: 4135122 (1979-01-01), Holmquist et al.
Inspec-"Single Chip Microprocessor Rules the Roast", Electronics vol. 49, No. 25, pp. 105-110, 12/9/76.

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