[TCML] Inductor design program?
bunnikillr at cox.net
Thu Apr 22 16:42:59 MDT 2010
I was basing the current/wire size on the maximum current I want going
to the piggie. So lets say I had a non limited transformer i needed to
ballast to 20 amps, I would then use a #10 or #12 wire. I would still
wind on the 1 turn per volt to start with. I also would be more apt to
adjust the gap between the EI cores to fine tune the amperage draw.
It may be a bit scarey, but you can test the inductor for its full
amperage limiting by using it as a load on an A/C circuit. Along with an
amp meter and a variac, you can find the "current" curve of the inductor
as you ramp up the voltage. Most of the inductors I have made seem to
be pretty linear in their responce untill saturation of the core
occurs. At that point ( saturation) the current climb seems more
If you dont want to adjust the EI core gap and keep the core solid, the
next step would be to start removing winds 1 or 2 at a time untill you
reach the current you are looking for. IIRC, as you remove winds, the
current begins to increase.....
jhowson4 at comcast.net wrote:
>I am confused.
>You are basing your turns and thus your inductance off your initial voltage or turns / volt, etc. then you decide a wire gauge based on what current you want. When do you make the connection between inductance and voltage as to actually know what the current will be vrs. what you want it do be?
>John "Jay" Howson IV
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