Alpha-Core is a division of Bridgeport Magnetics Group, Inc. Alpha-Core was founded in 1982 as a manufacturer of toroidal cores of grain-oriented silicon steel for the emerging industry of manufacturers of toroidal power transformers. Alpha-Core has cultivated close relationships with a wide variety of customers from individuals and small winding job-shops to multi national manufacturing companies, national laboratories, schools and universities. In short everyone requiring sample quantities through truckloads of our products. Our product lines is expanding all the time