30-03-2013, 04:38 PM
Definitely!
The first bit of charge is dead easy to put in, because the capacitor voltage is zero. To drive, say, 1mA for 1 second into a discharged 1,000µF capacitor takes only a bit of energy. But when the capacitor is charged up to 100V, to drive 1mA for 1 second takes 100mW of power for 1 second. When it's charged to 1,000V then you need 1W for 1 second, even though each case, you are still putting exactly the same amount of charge in.
The first bit of charge is dead easy to put in, because the capacitor voltage is zero. To drive, say, 1mA for 1 second into a discharged 1,000µF capacitor takes only a bit of energy. But when the capacitor is charged up to 100V, to drive 1mA for 1 second takes 100mW of power for 1 second. When it's charged to 1,000V then you need 1W for 1 second, even though each case, you are still putting exactly the same amount of charge in.
