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1. 发明专利

JPH0862055A METHOD AND EQUIPMENT FOR THERMOMETRY 失效
公开(公告)号：JPH0862055A
公开(公告)日：1996-03-08
申请号：JP19059395
申请日：1995-07-26
申请人： SSI TECHNOLOGIES INC
发明人： MAIKERU EFU MATESU , JIEIMUZU SHIIFUERUTO
IPC分类号： G01K7/16 , G01K7/21 , G01K7/24 , G01K7/25
摘要： PROBLEM TO BE SOLVED: To provide an excellent temperature responsive characteristic by providing a temperature responding means which produces a differential voltage output having a functional relation with the ambient temperature, an amplifier means and a gain control means for the amplifier means which responds to the fluctuation of the ambient temperature. SOLUTION: A temperature responding sensor 10 comprises a temperature responding means, an amplifier means 18 which is connected to the means 14 and amplifies the differential output and a means 22 which regulates the gain of the means 18 and produces an electric signal representing the ambient temperature. The means 14 includes a first arm 26 which produces a first reference voltage having a functional relation with the temperature and a second arm which produces a second reference voltage and outputs a differential voltage between nodes 30 and 38. The means 18 receives the reference voltage produced at the node 30 and the differential voltage produced at the node 38 and has a gain which is selectively determined on the basis of an element connected to an operational amplifier 50. The means 22, which is combination of a feedback resistance Rf and the resistances R1 and R2 of the arm 26, regulates the gain of the amplifier 50.

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