Re: Transformer core
In a message dated 10/6/99 5:57:37 AM Eastern Daylight Time, tesla-at-pupman-dot-com
<< Original Poster: "Matt Behrend" <electronxlc-at-earthlink-dot-net>
I have a large transformer core that I want to wind for my inductive
ballast - 13mH. It must handle 3kVA without saturating, so could
some of the transformer experts tell me if my core is large enough,
and minimum number of turns required?
Overall dimensions are 7.5" x 6.25" x 2.5"
cross sectional area 1.25" x 2.5" on perimeter sides and 2.5" x
2.5" in center leg of the El shape.
This is from a 1kVA Topaz isolation transformer, but the size of the
core seems like it can take much more power.
I'm not an expert on HV or HF stuff, but seems to me all that counts is the
number of ampere-turns. This will determine the flux density which causes
saturation. Generally, LF uses a larger cores than HF - the slower cycle
times allows higher flux buildup and saturation. It would be nice to know
how many turns were on the original core.