下方电阻的标称值为4Ω，上方电阻值为396Ω，额定的抽头电压（tap voltage）将为4V。如果将上方电阻的电压增加1%，则得到的电压为399.96V，接近于400V。
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low voltage tap changer 低压调压开关
voltage regulator tap 电压调节器分接头
High-voltage tap range 高压分接头范围
high voltage tap changer 高压调压开关
The easiest way to accomplish this is to apply a potential across the entire tube and tap the dynode voltages off a voltage divider, as shown in Figure 4-13.
做到这一点最容易的方法是给整个光电倍增管的两端加上一个电压，然后从一个分压器的各个抽头取得供给各个倍增管电极的电压，如图4 - 13所示。
If a voltage change requires that a different tap be selected, the new tap is electronically switched in precisely at the zero-crossing, to avoid distorting the AC waveform.
如果电压变化需要选择不同的自来水，新的电子开关水龙头恰恰是在零交叉，以避免扭曲的交流波形。
Both regulating characteristics of on-load tap changer (OLTC) and load characteristics greatly impact power system voltage stability.
有载分接开关(OLTC)的调节特性和负荷特性对电力系统电压稳定性具有极大的影响。
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