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Charging a capacitor in a tesla coil

  1. May 26, 2012 #1
    Can somebody explain how it is possible to charge a capacitor using ac voltage? The way I see it is the capacitor wouldn't have time to charge as the voltage is constantly switching. In the case of 60Hz - 120 times a second.
    I have attached a schematic of a tesla coil which is how I come to think about it.
     

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  2. jcsd
  3. May 27, 2012 #2

    Simon Bridge

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    and if the cap charges quickly but discharges slowly...
     
  4. May 27, 2012 #3
    I have made some enquiries and it appears that it is not AC voltage but rather pulsed DC.
     
  5. May 27, 2012 #4

    Simon Bridge

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    You have the same issue - when the pulse is low the cap can discharge.
     
  6. May 28, 2012 #5
    Your right. It must be a capacitor which operates at high frequencies. I don't have any practical experience so I never new such capacitors were available until I had a look around the net.
     
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