Figure 1-18 shows the basic configuration of an alternative form of electrometer ohmmeter. A built-in constant-current source, formed by VS and R, forces a known current through the unknown resistance (RX). The resulting voltage drop is proportional to the unknown resistance and is indicated by the meter as resistance, rather than voltage.
基于1个网页-相关网页
The resulting voltage drop is proportional to the unknown resistance and is indicated by the meter as resistance, rather than voltage.
产生的电压降正比于未知电阻，仪表直接指示出电阻值，而不是电压值。
With this shield in place, the noise current generated by the electrostatic voltage source and the coupling capacitance flows through the shield to ground rather than through the signal conductors.
有了这种屏蔽，由静电电压源和耦合电容产生的噪声电流就经过屏蔽流到地，而不再流过信号线。
Using Schottky barrier diodes for D1 and D2 rather than common diodes reduces the low-level voltage on the bus, improving the noise margin.
使用肖特基二极管d1和D2，而不是普通二极管，为的是减少总线上低状态电压，改进噪声极限。
应用推荐