voltage vs uf?

if you were building something, say a coil gun, would it be best to use a bank of higher voltage (300+V), lower uf (80-120uf), or a few capacitors of say, 1000uf 50V or lower?

 

Comments

[firebird982002]

Well, power (measured in columbs) is still power.  Here's the equation you are looking for 
 capacitance * voltage= power

Put your numbers in and whichever combination yields the larges power, is the one you should use.  Here are your numbers->

120uf * 300v = 36,000
or 
1000uf *50v = 50,000

As you can see, the lower voltage setup will be better.  Typically, a 50v 1000uf capacitor will be significantly smaller than a 300v 1000uf capacitor.  Also keep in mind if you did go the higher voltage route, you are going to have a hard time safely making 300v.  Much easier to stick with the lower voltage anyway.  Remember anything over 30V can SHOCK you and capacitors arc and can KILL, so no touching.

[freenergyfuture]

does that mean, the higher the uf the greater the oomph? I am researching parts for a joule thief to be used in a circuit that if done correctly will continuously recharge the battery being used and provide enough power to run a small dc motor.

i want to make an E-Bike that does not need recharging.

how much is a simple neon pulse generator? I'm having difficulties finding one via Google.

[finfan7]

It has to be balanced with your actual coil but in general more voltage and middling capacitance produce the best results.