然而，实际的安培计在输入端开路时的确有一些小的电流。

Practical ammeters, however, do have some small current that flows when the input is open.

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使用分流型安培计(图2 - 49)时，输入电容对电流测量的影响与电压测量时类似。

The effects of input capacitance on current measurements using a shunt type ammeter (Figure 2-49) are similar to those for voltage measurements.

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有两种电流测量的基本技术，即分流安培计技术和反馈安培计技术。

There are two basic techniques for making current measurements: these are the shunt ammeter and the feedback ammeter techniques.

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