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Over-Charging Capacitor Answered

What happens if you connect some form of dc power source that supplies 100 volts to a capacitor that is rated for 100 volts, and leave it plugged in for a long period of time. would it eventually "over charge" and explode? would it over heat? would it loose its  ability to store energy?

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gmoon

3 years ago

All caps have a finite lifespan. Routine cycling them can expand that lifespan.

Leaving them charged (within the specs) shouldn't lessen their expected life. IDK if it would extend it like cycling the charge, though.

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merlinjgmoon

Reply 3 years ago

So if i leave it plugged in, and the voltage i'm charging it with never exceeds the rated voltage, then it will not explode, or break from over charging?

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Downunder35mmerlinj

Reply 3 years ago

That what is called "rated limit" - you should stay a little bit under it though to increase the lifetime.

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merlinjDownunder35m

Reply 3 years ago

so as long as you charge your capacitor, with slightly under the rated limit of voltage, you can charge it for days, and it will neither blow up, nor damage it?