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5.1概述 5.2电压表和电位差计 5.3电气机械伺服式记录仪 5.4光学示波与记录 5.5阴极射线式示波与记录 5.6光门/热敏/静电阵列记录器 5.7数字式示波与记录 5.8磁性介质记录/复制器 5.9总线 5.10本章小结
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2.1概述 2.2电阻式传感器 2.3电感式传感器 2.4电容式传感器 2.5压电式传感器 2.6磁电式传感器 2.7霍尔传感器 2.8热电式传感器 2.9光电式传感器 2.10传感器阶数和传递函数
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利用直流四电极法测量了不同含水量条件下的大港土电阻率,其电阻率随含水量增加而降低.在测量中发现当外加电位梯度比较小时,所计算的电阻率ρ值相对较大;随着外加电位梯度增加,其电阻率逐渐减小,并最终趋于一个稳定的数值,特别是在含水量比较低的情况下,这种变化更为明显.提出了一个土壤导电模型,利用等效电路的方法对土壤的导电性进行了讨论:在含水量较低时,主要是孔隙水液相和固/液界面上的交换性离子导电;在高含水量条件下,土壤主要是通过孔隙水液相导电,固/液界面上的交换性离子导电可以忽略不计
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General Description de range of applica is local on card bypassing is needed only if the regulator is located far from 9 gulation, eliminating the distribution problems associated the filter capacitor of the power supply rith single point regulation. The voltages available allow For output voltage other
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General Description hese devices need only one external com ation capacitor at the output. Tthe LM? aged in the to-220 power package and is capable applications requiring other voltages, see LM137 data 4 supplying 1.5A of output current These regulators employ internal current limiting safe area Features a Thermal, short circuit and sa tually all overload conditions
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These circuits consist of four independent, high TSSOP14 (Thin Shrink Small Outline e Package) gain, intemally frequency compensated operation al amplifiers. They operate from a single power supply over a wide range of voltages. Operation
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Guaranteed Zero Reading for OV Input on All Scales The Intersil ICL7106 and ICL7107 are high performance, low True Polarity at Zero for Precise Null Detection power, 312 digit A/D converters. Included are seven seg- 1pA Typical Input Current ment decoders, display drivers, a reference, and a clock
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1、请先登记 每组请先到前面讲台登记,请写清楚下面几项:组员、设计项目、实验台编号、开始实验时间,离开时写清楚离开时间
文档格式:PDF 文档大小:156.3KB 文档页数:6
General Description de range of applica is local on card bypassing is needed only if the regulator is located far from 9 gulation, eliminating the distribution problems associated the filter capacitor of the power supply
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The OP07 is a precision operational amplifier with Ultra Low offset Voltage: 10uV for the OPO7A), input offset drift of 0. 2uv/C an Ultra Low Offset Voltage Drift0.2μ° put bias current of 0.7nA the wide inp o Ultra Stable vs. Time: 0.2u V/Month 110dB minimum(OP07A), plus high input Ultra L。wNo|e:035
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