The Sorensen brand is responsible for the manufacture of well-known test equipment including direct current (DC) power supplies, precision modular power supplies, programmable power supplies, linear power supplies, fuel cell testers, electronic loads, and DC electronic loads. Elgar Electronics Corporation (EEC) owned Sorensen until Xantrex acquired both brands in 2006. Shortly thereafter, Ametek Inc. bought the Xantrex programmable power supplies division in 2008. Today, Ametek brands existing Xantrex product lines with the Sorensen name. When engineers and electronics industry professionals need high-quality reliable custom power supplies and other test equipment, they can shop at ValueTronics.com for deals on used and refurbished products.