FIELD: electricity.
SUBSTANCE: invention relates to the method of breakless switching between two taps (tap n, tap n+1) of a transformer winding with stepped voltage control, besides, each of both winding taps via an appropriate mechanical switch (DS) and a circuit arranged subsequently with it from two opposite IGBT (Ip, In) may be connected with a common loading outlet.
EFFECT: higher functionality.
3 cl, 3 dwg
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