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How Long Can A Capacitor Hold A Charge? [Solved]

Some of these circuits could be charged in less than 20 seconds and hold the charge for up to 40 minutes, while having relatively large capacitances of up to 100 milliFarads (mF).2 Dec 2014

Time it takes to Charge and Discharge a Capacitor

In this video you

Capacitor Holding Charge

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How long does it take for a capacitor to discharge?

A 30 micro Farad