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Capacitors and a coil

  1. Aug 30, 2014 #1

    So I'm trying to work on a project with capacitors. I have a twelve volt battery hooked up to a transformer that produces 120 v ac.

    I would like to then hook the transformer up to five capacitors in parallel and then use the power stored i the capacitors to shoot through my coils to create a magnetic field. Something is going wrong though and I don't know what.

    ImageUploadedByPhysics Forums1409391537.835094.jpg

    Any help would be great. Am I going to be able to just charge the capacitors up? I know that when running ac the capacitors are constantly charging and discharging. When I hook it up though the transformer makes a noise like I'm shorting something out.... :/

    Thanks for any help,
  2. jcsd
  3. Aug 30, 2014 #2


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    sounds like a bit of a dangerous project

    putting capacitors across AC is pointless as each plate of the capacitor will be charging and discharging with each cycle of AC ( as you discovered) so you will end up with zero charge on them

    forget the transformer and charge them directly from a DC supply

  4. Aug 30, 2014 #3
    Do you mean an inverter? If you hook up a DC supply to a transformer, you'll just short out the supply.

    If you manage to hook up that level of AC voltage to your polarized caps, you're probably just going to see a lot of smoke.
  5. Aug 30, 2014 #4
    Yes sorry I meant inverter... Ok I will have to modify my plan a little then thank you all for the help!

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