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国外已定型生产的智能仪器的品种和型号极其繁多,不便一一列举,以下就76A型电容电桥、NI 2001型示波器、HP 3455A型数字电压表、Fluke 8860A型数字万用表等仪器作典型介绍。重点介绍Fluke8860A。一、76A型电容电桥76A型电容电桥是美国Boonton公司生产的内藏微处理器的数字式电容电桥。其方框图如图1所示。它利用微处理器的程控功能来实现桥路的自动平衡,并利用微处理器的运算功能来实现并联等效值一串联等效值的转换、与参考值的比较、求百分率变化等。
Foreign stereotypes of the production of smart instruments variety and model is extremely numerous, inconvenience one by one, the following on the 76A capacitor bridge, NI 2001 oscilloscope, HP 3455A digital voltmeter, Fluke 8860A digital multimeter and other equipment as a typical introduction. Highlights Fluke8860A. A, 76A capacitor bridge 76A capacitor bridge is the United States Boonton’s built-in microprocessor-based digital capacitive bridge. The block diagram shown in Figure 1. It uses the program-controlled function of the microprocessor to realize automatic balance of the bridge, and uses the computing function of the microprocessor to realize the conversion of a series equivalent value of the parallel equivalent value in parallel with the reference value to find the percentage change.