[/ATTACH][/ATTACH]I need some help designing my electromagnet because Im a bit lost with it(adsbygoogle = window.adsbygoogle || []).push({});

I need to work out the guage of the wire to be used,

the resistance of the wire needs to match the battery's internal resistance for max power transfer

I need to work out the most amount of turns i can have

I need to work out how much inductance this coil has to then work out the time constant for that coil

this time constant MUST be below 0.0008 seconds and above 0.0007s for the purposes of my build

I have a few equations that i think may help and i think im almost there but i just cant work it out

heres what i have if more info is needed for anything just tell me and i will find it thanks again for any help its really appreciated thanks alot in advance

B * gap = Mu * N * I

B is in Tesla (10,000 gauss)

gap is in meters (This is the opening of the "C ".)

Mu = 4π * 10-7

N is an integer equal to the number of turns in your coil

I is the current in Amps

Another famous law, called Ohms law, tells you the relationship between amps, volts and resistance.

Volts = Amps * resistance (measured in Ohms)

Your coil should be made so it has a voltage drop equal to what your battery can put out at the best rate of discharge. A piece of copper has resistance which can be determined form the following formula.

Resistance = Rho * L / A

Resistance is in Ohms

Rho is a constant for each metal and for copper it is 1.6*10-6 ohm-centimeters

L is the length of the wire used in centimeters

A is the cross section area of the copper wire in centimeters squared

here is an inductance calculator for sqaure loop http://www.technick.net/public/code/cp_dpage.php?aiocp_dp=util_inductance_calculator

I also have this picture but it isnt very clear to me and i have drawn a diagram to show the dimentions of the core

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# Please help designing a specific electromagnet

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