Single-phase induction motor with bidirectional switch and overload protection, uses thermal elements in series with each winding cumulatively controlling a single thermal switch at the common point of the windings

摘要

The motor has the auxiliary (14) and main winding (12) in parallel, with a capacitor (16) between their ends. The capacitor is in parallel with the direction control switch (28). Overload protection is provided by a single switch (26) between the common point of the two windings and the AC line. This switch is controlled by heating elements (22,24) in series with each winding.