The three-poleswitch was originally used to switch a voltmeter guard along with the signal lines.
三刀开关最早用于切换伏特计保护及信号线路。
2
This paper introduces a scheme in which a complex programmable logic device (CPLD) is used in the three phase threepoleswitch high rating factor convertor to realize logic control.
介绍了在三相三开关高功率因数变换器中应用复杂可编程逻辑器件(CPLD)实现逻辑控制部分的方案。
3
The RF5521 FEM combines a low noise amplifier (LNA) with bypass and a single polethree throw (SP3T) switch.