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北京艺术培训机构中国在我心中演讲稿专利名称：A.C. Impedance measuring circuit with thermally controlled resistive element 发明人：David A. G. Tait奥巴马当选演讲
所望
becau you loved me申请号：US05/953862
申请日：19781023
公开号：US04275345A
llr公开日：
情人节为什么送巧克力
19810623
专利内容由知识产权出版社提供
摘要： circuit including a thermistor ud as a variable resistance device. current source is provided for varying the temperature, and hence the resistance, of the thermistor and a DVM is provided for giving an indication of the resistance thereof and/or for controlling the temperature varying current source in order to t the resistance of the thermistor to a defined resistance. The thermistor can form part of an a. c. bridge and the temperature varying current source can be arranged to adjust the resistance of the thermistor until the bridge is balanced.英语翻译中文软件>tombstones
申请人：TAIT; DAVID A. G.
代理机构：Roylance, Abrams, Berdo & Farley
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