Richard sumner technology, Inc.

With over ten years experience in the toroid transformer industry, Mr. Sumner founded Sum(R) Design to address the engineering requirements of OEM accounts. Sum(R) Designs and Manufactures quality power transformers in the range 20VA to 2500VA. Universal primaries, multiple secondaries and isolation transformers are all designed to the customers special needs. Complimentary to our power transformer production, Sum(R) manufacturers reactors and chokes. Our customer base includes the high end audio; professional sound applications; electrical industry; industrial electronics; and computer industries and our products are used in these applications "world wide". Sum(R) can accommodate small production runs and rush customer's production needs.