Patent ID: 11881800
Assignee: KITO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 3:
4. The electric motor-driven hoisting-lowering device control apparatus of claim 1, wherein the main winding current path comprises the main winding and an input side of a full-wave rectification circuit, which are connected in series, and further comprises an exciting coil of an electromagnetic brake connected to an output side of the full-wave rectification circuit;
the auxiliary winding current path comprising the auxiliary winding and a phase-advancing capacitor, which are connected in series, so that an electric current flowing through the auxiliary winding current path can be cut off by on-off controlling the non-contact switching device with the microcomputer according to a magnitude of electric current flowing through the main winding current path of the single-phase alternating-current electric motor.