Sensor controlled cooking apparatus

Details Sensor controlled cooking apparatus Sensor controlled cooking apparatus

F - Mech Eng,Light,Heat,Weapons

24

C

309/69.3, 327/2.

F24C 7/08 (2006.01) H05B 6/68 (2006.01)

Patent

CA 1169127

ABSTRACT OF THE DISCLOSURE A microwave oven includes a gas sensor for detecting a cooking condition. The resistance value of the gas sensor varies in response to the concentration of the gas generated from the foodstuff being cooked in the microwave oven. A resistance-to-frequency converter including an astable multivibrator is provided for converting the variation of the resistance value of the gas sensor into a frequency signal. A cooking constant setting circuit is provided for developing a signal of a reference frequency in response to a menu to be conducted. The frequency signal, indicative of the resistance value of the gas sensor, obtained by the resistance-to-frequency converter is compared with the reference frequency to terminate the cooking operation when the frequency signal reaches the reference frequency. * * * * * * * * * *

381899

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