Black Decker Inc.

Duc Hoang Tran

Charles Z Krasznai

Leonard I Horey

A toaster control circuit is disclosed for correcting for toaster cavity temperature variations that occur as a function of the time between toaster heating cycles. This disclosed circuit produces the same toast color during consecutive cycles, regardless of variations in the interval between heating cycles.

Toaster compensation for repeated use

In a toaster, a system is constructed to vary the duration of the toasting cycle. An RC network provides an oscillating signal to a counter, which upon the required number of oscillations being counted, triggers a transistor switch. The switch energizes the main solenoid switch which in turn deactivates the heating elements of the toaster. The RC network of the system comprises a variable resistor which may be manually operated, a heat sensitive resistor, and a light sensitive resistor.

Light sensitive control for toaster

A control for a toaster for varying the toasting cycle includes a switch for connecting the toaster heater to a source of electrical power. A temperature responsive resistance element senses the temperature within the cavity. A capacitor is responsive to the magnitude of the voltage of the electrical power. The capacitor and the temperature responsive resistance element are included within a timing circuit such that a selected duration of time for a toasting cycle to obtain a desired toast color is varied if the voltage of the power supply increases above a predetermined magnitude during the toasting cycle. The duration of time for the toasting cycle is also varied as the temperature in the cavity increases as a consequence of operation of the toaster for consecutive toast cycles.

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Shelton, CT, United States of America

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