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Single-phase motor main auto-winding voltage reducing and sp

2016-09-04 18:13  
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Single-phase motor main auto-winding voltage reducing and speed regulating circuit
As shown in the picture, the voltage reducing characteristic of the autotransformer can be used to reduce the voltage of main winding LR directly, so that the intention of voltage reduction and speed regulation can be implemented. TA is the autotransformer; I, II, III are the gears. Because the III reduces most of the voltage, the rotation rate will be lowest when the SA reaches III. LA is the assisted winding, and LR is the main winding.