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can i power a coil gun with 11.1 v with 4400mah with a c rating of 50? Answered

i have 2 x 11.1. volts 2200mAh in parallel which gives me double the current but the same voltage.
will this power a multi staged coil gun?

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iceng

4 years ago

Yes you did, this is a teaching forum helping others to learn.

But your the engineer type who needs answers. So;

1] You are welcome.

2]
LM324 quad comparators are fine, optical detectors are your speed
limiting components ( they are slow with differing turn-on and turn-off
times ) even though the light interrupt is instantaneous the
semiconductor is not.

3] The 18 gauge wire will fuse ( turn red
and pop ) at 82A and thermal resistance begins to be a factor after 5A.
So if your turns are low enough there will be a race between who will
explode first the wire or the Lipo !

4] C battery rating doubles
in parallel and stays the same in series.because current delivery adds
in parallel but stays the same in series. The MOSFET has a forward drop
say a volt at full draw that is 10% of your supply while a capacitor
charged to 200v it is o.5% of the supply.

5] Efficiency in a coil slugger is a function of magnetic flux-coupling and way beyond this text box.

6] Time of 2/3 rise to peak = L / R You need to be study and understand this

http://www.physics.sjsu.edu/becker/physics51/induc...

see picture

7] Coil shape, Flux and Circuitry all affect turn off time thats where experimentation trial and improvement occur.

8]
We learn when things blowup. A fuse should protect the weakest
component. Fusing current on your thin wire is 82A use a fast blow fuse
for the coil. Then fuse your lipo in accordance with the C burst = Short time discharge, value using a regular time fuse.

A

Time-as-LoveR.JPG
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iceng

4 years ago

You didn't like my last answer true to you.

Energy increases as the square of the voltage !

You would do better with 22.2 volts.

BUT THE TIMING ( Turn_Power_off) WHEN SLUG GETS HALF WAY INTO COIL !

Other wise coil will pull slug Back !!!

I would ask for you to mark the best answer but clearly you didn't believe the EE.

Coilgun_animation.gif
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icengiceng

Answer 4 years ago

You did click on the neat visual ?

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iceng

4 years ago

When I was your age, we wound 60 turns of 14 gauge on an 18" long tube.

Then using a 2" long single strand of extension wire as a blow up timing fuse, we could put a ball bearing into Sheetrock from across a room, if you anchor the tube. Expect some trial and error, but you have a near endless supply of fuses.

Safety glasses are a good idea and don't stand in front....

.

Again it is voltage squared that coils a gun not low volt lipos.

The monograph calculator is provided for a nice obsessive guy who wants to inductively work a slug off a table.

Stranded Wire.jpegcannon.pngnomograph-coil-sized.jpg