JPS558511A - Temperature indicating apparatus of heat cooker - Google Patents

Abstract

PURPOSE: To facilitate checking of the relation of the present temp. and the set temp., by making the two temperatures flash simultaneously within a single indicator.

CONSTITUTION: Analog voltage (a) and the amplified voltage (b) are continuously compared at the comparator 12; where, (a) corresponds to the address signals generated by the control circuit 10 and D/A conversion circuit 11, and (b) is a voltage of potential divider circuit of temp. probe 14 and resistor 15. When the inversion of signal outputted by the converter is detected, tip-select signal is sent to the data circuit 9, then the address signals which correspond to the temperature are sent to B₁WB₅, and passing thru the digital selection signal generation circuit 8 and decode circuit 7, the signal show the present temp. continuously at the bar illumination part 2-2. On the other hand, when the set temp. value is inputted into the control circuit 10, the inputted value, passing thru the data generation circuit 9, illuminates a bar in dot and the set value is indicated. When the set value and the present temp. value are indicated on the same indication element alternately at high speed, it is recognized by the human eyesight as though the both values are appearing simultaneously.

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