reverse voltage

例句：

1. 1. The device requires a reversevoltage to operate properly.
   该设备需要反向电压才能正常工作。
2. 2. The circuit has a reverse voltageregulator that prevents overheating.
   电路有一个反向电压调节器，以防止过热。
3. 3. The power supply isdesigned to provide a reverse voltagefor safety reasons.
   电源设计为提供反向电压，出于安全原因。