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R No.5835
>>5848
Despite appearances, the Austrian class 1082, of which one was built in 1931, was fully electric. Three traction motors powered five axles via siderods.
A rotary converter allowed the traction motors to be fed with steplessly-variable voltage. It needed much maintenance, and it wasn't until the 1980s and the introduction of high-power semiconductors that the ideas behind it became practical.