Capacitance question

Discussion in 'General Electronics Chat' started by rcullens, Jan 13, 2014.

  1. rcullens

    Thread Starter Member

    Apr 26, 2008
    15
    1
    Ok so I somewhat understand capacitance. So what would would be the difference in a .8uF cap at 2100V and a bank of 120 uF cap at 2100v ??
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    The stored energy.
     
  3. rcullens

    Thread Starter Member

    Apr 26, 2008
    15
    1
    Ok, so 1200uF cap charged to 350v has more energy than a .7uF cap charged to 350v?
     
  4. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    That's correct.
     
  5. crutschow

    Expert

    Mar 14, 2008
    13,003
    3,232
    The stored energy of a capacitor is 1/2 CV^{2} (in Joules) where C is in Farads and V is in Volts, so the stored energy is proportional to both the capacitance and the square of the voltage.
     
Loading...