BLACKSBURG, Va., June 22, 2016 /PRNewswire/ -- VPT, Inc. (VPT®), a HEICO company (NYSE:HEI.A) (NYSE:HEI), today released the VHR Series of industrial level DC-DC converters and EMI filters. Available in models ranging from 5 to 100 watts, the VHR Series of DC-DC converters...