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capacitors
Capacitors / How Long can a Capacitor Hold a charge of energy?
How long can the capacitors in small electronic equipment hold a charge after the equipment is turned off? Like small Radios, mp3 players, phones for example. After you turn off a radio, how long will the capacitor hold energy?
Like say you have cellphone or an ipod for example, you turn it off and remove the battery from it. Now how long will it take until the capacitors in it are drained of any remaining charge?
Your asking two different questions here! A Capacitor can hold a charge indefinitely when not connected to a circuit, but the circuit itself is going to drain the power out of it. Be careful with large capacity capacitors! High voltages with a high MMF rating can be quite harmful if you handle it wrong. you can get electrocuted by the larger ones.
US $.99
