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Micro-computer controlled superconductor electromagnetic heaterMicro-computer controlled Super-conductive Electromagnetic Heater Energy-saving, Environmental protection, Safety, Durability. New patent Products Energy-saving 40-50% to the traditional electrical-heater. Working principle: Micro-computer controlled Super-conductive Electro-magnetic Heater uses electro-magnetic induction to heat, rectifying circuit converts 50Hz AC to DC, then converts DC to 20-30KHz high frequency voltage by controlled[...]