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4hv.org :: Forums :: Electromagnetic Projectile Accelerators
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Saz43
Fri Oct 21 2011, 12:18AM
Saz43 Registered Member #1525 Joined: Mon Jun 09 2008, 12:16AM
Location: America
Posts: 294
Hey,

The ESR is not going to be a problem, if it's only 0.015 Ohms. What the problem will be is the capacitance. The time it takes for your capacitor to discharge into the coil is roughly proportional to L*C (inductance times capacitance). With a huge C, your current pulse is going to be super long, meaning your coil's timing will be way off. The current pulse won't be over when the projectile reaches the center of the coil- meaning the coil will suck the projectile back, resulting in super low efficiency or nothing.

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Adam Munich
Fri Oct 21 2011, 12:41AM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Might it be possible to use an IGBT to turn the pulse off at a desired time?
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Blade&Rose04
Mon Oct 24 2011, 08:23AM
Blade&Rose04 Registered Member #4148 Joined: Tue Oct 18 2011, 01:08PM
Location:
Posts: 5
Thanks, Saz43 and Grenadier.

I was reading about particle accelerators and thought a voltage multiplier (Marx gen., Cockcroft-Walton, or Dickson pump) might improve the acceleration and/or efficiency for other types of magnetic accelerators...
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