The Perils of Reverse Polarity
3. Potential Consequences of Reversing Polarity
So, what happens if you accidentally reverse the polarity on a polarized capacitor? Well, the best-case scenario is that nothing happens immediately. But don't count on that! More likely, you'll start to overheat the capacitor. The electrolyte inside will begin to boil, creating pressure.
In a not-so-best-case scenario, the capacitor's internal safety vent will rupture, releasing the pressure — often with a hissing sound and a pungent smell. This is the capacitor's way of saving itself (and, potentially, the rest of your circuit) from complete destruction. Consider it a warning shot.
The worst-case scenario? Boom! The capacitor explodes. Not a massive, Hollywood-style explosion, but enough to make you jump and potentially damage nearby components. Shrapnel and electrolyte might be involved. Always wear eye protection when working with electronics, just in case!
In short, reversing polarity is generally a bad idea for polarized capacitors. It stresses the component beyond its design limits, leading to premature failure or, worse, a spectacular (and potentially messy) demise. Respect the polarity!
