OUR HISTORY
Manufacturing Transformers Since 1915

Jefferson’s innovative tradition began with the pioneering leadership of our founders, J.C. Daley and John A. Brennan in 1915. Their vision and dedication earned Jefferson a distinguished reputation of providing diverse magnetic solutions to meet everyday needs.

We enjoy a rich tradition of achieving the highest industry standards for quality, durability and reliability in the commercial, OEM and industrial markets. Our customers trust Jefferson products to provide trouble-free, reliable and long-lasting performance.

Jefferson produces power systems that satisfy everyday needs. Our transformers helped bring radio to life and our radar and gunfire control transformers helped our soldiers win World War II. They dried agricultural grain, dimmed theater lights, rang school bells, ran toy electric trains and performed a variety of other, everyday functions. Our quality and innovative tradition endures today with products such as reactor and ripple filter products for ultra-smooth elevator operation and magnetics used in solar inverters and drive systems.

As products and technologies change, we change with them. Through it all, we listen to our customers’ needs and aggressively pursue opportunities to meet changing market demands. That’s how today’s innovative Jefferson® products become tomorrow’s standard products.