Can a super/ultra capacitor be charged from an AC outlet?

  • 2
    \$\begingroup\$ You can't charge a capacitor with AC. \$\endgroup\$ – Peter Bennett Nov 23 '15 at 17:07
  • \$\begingroup\$ You only need to plug some device between those two \$\endgroup\$ – PlasmaHH Nov 23 '15 at 17:25

No you cannot. You need a circuit in between to assure a proper loading. Normally, a DC current source may work. Otherwise, without current limitation, you may risk to destroy the supercap.

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  • \$\begingroup\$ Also you need to limit the voltage on the caps as it rises during the charging process. \$\endgroup\$ – Autistic Nov 23 '15 at 21:14

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