Basics 1, 2, 3 -
introduction to coilguns and instructions on how to build a simple table-top coilgun.
Basics 1, 2, 3, 4 -
Describes the basics
of electromagnetic forces and shows how these operate in general.
Fundamentals 1, 2 -
This section looks
at the principles involved in the operation of a coilgun.
If you don't have
a high resolution ohmmeter then this formula will give you a good approximation
to the coil resistance.
Coil Parameters 1, 2, 3 -
Find out how the
circuit resistance and coil parameters affect the current density and field strength
in the coil.
Power Handling -
Make sure that
you don't melt your coils. Find out how to estimate the temperature rise.
A transient technique
is described which can be used to determine the inductance of a
FEMM can be
used to determine the approximate inductance of a coil operating
at low frequencies.
the most common semiconductor devices which can be used in a coilgun system.
The main types
of triggering are discussed and some example circuits are given.
How fast does your
coilgun fire that projectile? This explains two methods which can be used to tell
you just that.
If you want your
projectiles to go ballistic then think about some of these design issues.
tubes mean one thing, eddy currents. This section shows how to reduce eddy current
paths in a metallic tube.
Construction Issues -
High power coilguns
experience large dynamic forces so the coils need to be constructed with inherent
strength. Some simple ways to achieve a strong coil are discussed.
what can be used to power a coilgun.
Covers some of
the math used in electromagnetics.
Element Software -
A brief look at
two free finite element numerical field solution packages, Quickfield and FEMM.