Drive Source International (DSI) is the world’s leading provider of Eddy Current adjustable speed solutions.

Dynamatic® is a brand built upon 80+ years of reliable performance. Drive Source International, Inc. is the corporation that owns the Dynamatic® brand of Eddy Current adjustable speed drives, brakes and controls.

As an application engineering manufacturer, we offer the most complete line of electromagnetic drives, brakes, and digital controls, centered on the world-renowned Dynamatic® brand. Our broad offering consists of Eddy Current variable speed drives up to 4000HP, Eddy Current air and liquid cooled brakes, CES Constant Energy Digital press drives, Eddy Current controls, custom control systems, high speed AC motors, inverter packages, and Dynamatic® Specialty & AC Dynamometer Motors.

Dynamatic® supports complete factory rebuilds on all products, backed by a factory warranty. We can rebuild, test and repair all control circuit boards back to factory original specifications insuring minimal downtime.

Dynamatic® understands the value of engineering products based on their specific and unique applications. We utilize the vast knowledge and experience of our mechanical and electrical engineering teams to fully engage the natural advantages of the Eddy Current technology.

In addition, Dynamatic® is the North American agents/distributors and factory repair specialist for TECO Eddy Current drives and controls. We also specialize in a complete line of AC Variable Frequency Drive packages (VFDs).