ABSOLUTE HUMIDITY SENSING CIRCUIT AND SENSOR DETECTION SYSTEM FOR MICROWAVE OVEN

摘要

This invention is about the absolute humidity detecting circuit and the method for checking sensor of microwave oven to extend the function of micom simplifying the zero balance circuit and processing with software without using a micom's port. This comprises an absolute humidity detecting sect. (11) outputting the generation of difference voltage with humidity variation; absolute humidity detecting ports (P5-P1) of micom (13); a zero balance resistor (14) connected by registor (R10-R14) to control the zero balance of absolute humidity between the absolute humidity detecting ports (P5-P1) and the absolute humidity detecting sect. (11) in parallel.