I'm working with a device that requires specific voltage and current, and I've been using buck converters to manage the power. I'm currently powering everything with a LiPo battery that has an XT60 connector. However, I've had some mishaps connecting the LiPo to the buck converters; I've tried using JST and XT60 connectors, but I accidentally reversed the polarity both times, which fried the converters. After doing some research, I landed on using barrel connectors (specifically 2.1mm ID and 5.5mm OD DC Jack types) because I'm hoping that they will prevent polarity mistakes. They should be able to handle at least 12V at 3A or 5V at 5A. Is this the right solution for my power problems? Thanks for your help!
1 Answer
Barrel connectors are often a good choice for power delivery as they're designed for that kind of setup. However, to safeguard against reversing the polarity, it's a smart idea to install a diode in the circuit. This way, power can't accidentally flow back the wrong way.

I didn't quite get that, could you explain how a diode helps prevent the wrong flow? Thanks!