Semiconductor Circuits designs and manufactures a wide range of power supply products, primariy DC-DC converters for industrial, test & measurement, telecom, lighting and communications markets. Engineering and manufacturing is done in a company owned 20,000 sq ft facility in Atkinson, NH USA. Founded in 1966, the company gas built converters for hundreds of customers and specializes in state of the art open frame products that conform to industry standards. Custom and modified standard designs are an important part of our offerings.