Samsung Electronics Co., Ltd.

Soon Bae Yang

Jung Chul Choi

Chang Joo Park

Jun Hyun Park

Dong Gyu Lee

Jae Jin Kim

Joon Hwan Lee

Jung Suk Chu

Se Jin Sohn

Min Kwang Lee

A dishwasher includes a circulation pump that supplies water to nozzles; a drainage pump that discharges the water; a driving current supply unit that supplies a driving current to one of the circulation pump and the drainage pump; a controller that transmits driving control signals to the driving current supply unit; and a door opening detection unit that, if opening of a door is detected, transmits door opening detection signals to the controller and the driving current supply unit, wherein, if the door opening detection signals are received while the circulation pump operates, the driving current supply unit stops supply of the driving current to the circulation pump and supplies the driving current to the drainage pump.

Dishwasher and method of controlling the same

A power supply includes a rectifier circuit to rectify power, a smoothing circuit unit to smoothen a voltage of the rectified power, and a voltage drop circuit unit to drop the smoothened voltage. The voltage drop circuit unit includes an electric charge storage circuit to output the voltage-dropped voltage, a resonance circuit to receive first current from the smoothing circuit unit and to supply second current to the electric charge storage circuit, and a current interruption circuit to control the first current and the second current using zero current switching for performing switching when current does not flow using a resonance circuit.

Power supply and DC-DC converter with voltage drop circuit therein

A control method of a washing machine, in which a hydraulic pressure of water supplied into the washing machine is estimated, enabling sensing of a laundry weight and measurement of a supply amount of the water. The control method includes calculating a first water supply time required to initially supply water to a setup water level, calculating a second water supply time required to additionally supply water according to a variation in water level due to laundry wetting after the initial supply of water, sensing a laundry weight according to a ratio of the first water supply time to the second water supply time, and measuring a flow rate of water using the amount of water supplied to the setup water level and the laundry weight data.

Control method of washing machine

Disclosed herein are a washing machine that is capable of maintaining the balanced state of laundry to more smoothly perform a spin-drying operation and a control method thereof. The control method of the washing machine including a drum to receive laundry and a motor to rotate the drum to reduce unbalance generated due to the nonuniform distribution of the laundry, includes wrapping the laundry by accelerating the drum such that the laundry sticks to an inner wall of the drum, detecting motor current during the wrapping of the laundry, determining an unbalanced state of the laundry based on the detected motor current, and controlling speed of the drum based on a result of the determination.

Growing community of inventors

Seongnam-si, South Korea

Soon Bae Yang