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Induction furnaces ИТПЭ are designed to melt and product high-quality steel, iron castings, and also… 

Thyristor frequency converters are designed for conversion of mains frequency three-phase current into medium frequency… 

Induction hardening units are designed for surface-hardening of both outer and interior surfaces of machine-building… 

With the advent of power bipolar transistors with isolated gate (IGBT), it will be possible…