Patent ID: 11859330
Assignee: LG ELECTRONICS INC.
Field: Other consumer goods (Other fields)
Classification: CPC D  F  H  Y | IPC D  F  H

Claim 11:
12. A laundry treatment machine comprising:
a washing tub;
a driver to drive the washing tub;
a drain pump; and
a drain pump driving apparatus to drive the drain pump,
wherein the drain pump driving apparatus comprises:
a converter to convert alternating current (AC) voltage into direct current (DC) voltage;
a voltage dropper to drop the DC voltage from the converter;
an inverter module to operate based on a first voltage from the voltage dropper and to output AC voltage converted by a switching operation to a drain pump motor;
a controller to operate based on a second voltage from the voltage dropper and to control the inverter module;
a voltage adjuster to adjust the level of voltage information of the motor outputted from the inverter module and to output the adjusted voltage information to the controller; and
an amplifier to amplify the output current flowing in the motor outputted from the inverter module and to output information regarding the amplified output current to the controller,
wherein the inverter module comprises an output current detector to detect an output current flowing in the drain pump motor,
wherein the controller is configured to perform a power control based on the output current from the output current detector, and to output a switching control signal based on the power control.