power supply - What do you call a device that reverses polarity

12v Reverse Polarity Switch Wiring Diagram

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Up Down Switch Wiring Diagram

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dc motor - Circuit to reverse polarity - Electrical Engineering Stack
dc motor - Circuit to reverse polarity - Electrical Engineering Stack

Up Down Switch Wiring Diagram
Up Down Switch Wiring Diagram

power supply - What do you call a device that reverses polarity
power supply - What do you call a device that reverses polarity