Bridgeport Magnetics Group
is a renowned manufacturer of toroidal (donut shape) magnetic products.
At our Alpha-Core
division, we make our own toroidal cores from tiny up to 500+ lbs.
At our
Tortran division we make
toroidal transformers and inductors from PC board level up to 40,000VA.
Toroids are more efficient and require much less copper and steel than
equivalent E-I transformers. They are quieter, exhibit less stray field,
and lower voltage drop under load.