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Registered Member #1941
Joined: Tue Jan 27 2009, 10:13PM
Location:
Posts: 4
Hey guys, new here and fairly new to high voltage. I have a question, hope it isn't too stupid!
Lets say for the sake of argument I have ten capacitors rated at 100uF and 400V. There would appear to be several ways that I could connect these together to form my capacitor bank with the two extremes being all in series an all in parallel.
If I connect them all in series I get 4000V and 100uF and all in parallel just 400V and 1000uF. I know that energy in joules is proportional to the square of the voltage so the former setup is gonna store more joules of energy. Is there some kind of trade off?
If I string them together in paralell do I get less joules but better "quality?" ones? surely there is a case for connecting capacitors in parallel too? does it depend of the load that you want to dump your juice in to?
Registered Member #396
Joined: Wed Apr 19 2006, 12:55AM
Location: Pittsburgh, PA
Posts: 176
Deceitful_Frank wrote ...
If I connect them all in series I get 4000V and 100uF and all in parallel just 400V and 1000uF. I know that energy in joules is proportional to the square of the voltage so the former setup is gonna store more joules of energy.
Capacitors in series are summed up like so: 1/total capacitance= 1/cap1+ 1/cap2 +1/cap3 + 1/capn etc. No matter how you arrange them the energy will always be the same (assuming they charge to their maximum voltage in every configuration.
You won't get any change in the "quality" of you energy but a higher voltage is likely to give you a higher and faster current pulse into a given load.
Registered Member #1941
Joined: Tue Jan 27 2009, 10:13PM
Location:
Posts: 4
Ok so either way the energy is the same. I suppose the penalty for failure could be like the difference between being hit over the head with a slow heavy brick or whacked in the face with a fast light golf club. I take it the load would experience similar in either case!
So in practice you would wire your setup for the maximum amount of volts that your charging circuit kicks out. Assuming you wanted the sharpest strongest pulse for your buck.
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Capacitor banks
