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Registered Member #1875
Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
You cannot wire two capacitors so that you get twice the voltage and the same capacitance.
Energy = (.5)(C)(V)^2
Two capacitors hooked up together in series implies twice the voltage and twice the energy, substituting 2V for V and 2E for E would show C needs to be divided by 2 in order to balance the equation. Looking at it practically, you'd basically be creating twice the separation between plates, doubling the insulating properties and halving the capacitance.
Wiring the capacitors in parallel will add their capacitances with no effect on voltage.
Registered Member #2400
Joined: Mon Sept 28 2009, 10:04AM
Location: Bundaberg, Australia
Posts: 18
Presuming the capacitors are all the same voltage/capacitance, you would need to wire 2 in series which would give you half the capacitance. Then you would need to double this value by adding another two capacitors (linked in series) parallel to the other two. This will give the same capacitance but double the voltage, I think . Most websites will give a schematic of this arrangement. Of course if this is for a coil gun or something similar then ESR and overstressing an individual capacitor will come into play.
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How..?
. Most websites will give a schematic of this arrangement. Of course if this is for a coil gun or something similar then ESR and overstressing an individual capacitor will come into play.
