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霍尔效应在测磁技术中得到很大应用,試制成功了高斯計等测磁装置。本文介紹日本生产的GM—100型、GM—200型和GM—300型高斯計的結构和方框图以及GM—300型高斯計的原理线路、技术规格和其特点。GM—300型为直讀式高斯計,量限广,探針选用砷化銦霍尔发生器,其温度誤差极小。高斯計内备有水银电池(GM—U4)专做霍尔发生器激励电源,放大器的输入与输出端均接有振动变换器并采用負反饋线路,在輸出端上与指示仪表并联一反向电压,以消除各种因素产生的杂音电压,仪器的测量误差在±2％以下。
Hall effect in the magnetic measurement technology has been greatly applied to trial success Gaussian meter and other magnetometry. This article describes the structure and block diagram of the GM-100, GM-200 and GM-300 Gauss meters manufactured in Japan and the principle wiring, specifications, and features of the GM-300 Gaussmeter. GM-300-type direct-reading gauss meter, a limited amount, the probe selection of indium arsenide Hall generator, the temperature error is minimal. Gaussian meter equipped with mercury batteries (GM-U4) designed to do the Hall generator excitation power supply, the amplifier input and output are connected to the vibration converter and the use of negative feedback line at the output and the indicator in parallel with a reverse Voltage, in order to eliminate all kinds of noise voltage generated by the instrument, the measurement error of ± 2%.