PWI began to expand into the electronic manufacturing business and, in 1972, PWI pioneered Complete Cold Cathode Fluorescent Lighting Systems for aircraft. The custom-made lamps were manufactured in-house to meet the customers’ exact needs. While still maintaining the lamp manufacturing and coil winding business, PWI purchased the complete Tape Wound Bobbin Core product line from Friskam Infinetics. These tape-wound bobbin cores can be used in special low-frequency transformer and inductor designs, magnetometers, and current sensing transformers.