Reverse Battery Protection With Mosfet (no voltage drop) - Voltlog #353

High quality PCB Services https://pcbway.com In this video I’m showing you a simple circuit to achieve reverse battery protection in low power devices. Everyone knows the classic solution of using an in-line diode but that has one major drawback: the voltage drop on the diode. If your circuit is powered by a CR2032 you can’t afford losing 0.5V on the diode. The circuit I’m showing uses a mosfet to achieve the protection feature but minimizes the voltage drop and the losses because a mosfet will have a very low internal resistance when conducting.

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