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Back - EMF peak current: ~160A - 2 of these diodes in parrallel. 3 to make sure that they won't explode.
WARNING: This is only an estimation. Circuit resistance and coil inductance values are not the correct ones. If the resistance is lower or the inductance higher, current will be higher and will blow up the 2 parallel arranged diodes.
Registered Member #3888
Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649
i found these in vishay's sample program. they look pretty promising for coilgun flyback diodes, and with a peak current of 1.5kA, you should only need to use one of them.
Registered Member #3315
Joined: Thu Oct 14 2010, 04:23PM
Location:
Posts: 156
few more. one for size comparison with my hunting rifle. other is the fibre glass cover that also houses the led voltmeters.
PSCG: it is sprig loaded bolt action. jus pull back and let go the bolt has a magnet that holdes the projectile so it cant slide out 40: I emailed that site about the diodes, hopfully they get back to me.. have you ever got parts fro that site?
Registered Member #3792
Joined: Sun Mar 27 2011, 06:07PM
Location:
Posts: 136
This is where the gunpowder technology meets the electromagnetic projectile accelerators!!!
Congratulations ben5017!!! You have constructed one of the best portable coilgun on the world(and for some reason, it reminds me a real life rifle i've seen)!!!
Keep up your excellent work!!!
And another question for you: what is the projectile data (diameter - caliber, lenght, weight)?
(Because i'm curious and i love sniper - type rifles: What model is your hunting rifle? Is it 0.22 or 0.30 cal?)
Registered Member #3888
Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649
You don't have to email them at vishay. they have a sample program. just sign up for that and click "sample request" on any parts that you want that are part of the program. It's free, they don't send you any junk emails, and yes i have ordered from them extensively in the same manner. I like the led meters. I still need to make/buy some of those.
Registered Member #3792
Joined: Sun Mar 27 2011, 06:07PM
Location:
Posts: 136
What topology do you use to charge the capacitor bank? And how long does it takes to fully charge the capacitors? It looks like a flyback transformer charger but i cannot understand much from the photo.
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S.C.A.R. 1000 (single coil assult rifle 1000j)
