Samsung Electronics Co., Ltd.

Joong Ki Moon

Ho Kwon Yoon

Sung Wook Kang

Dae Hyun Lim

A power supply apparatus includes a converter to convert AC power into DC power, an SMPS to convert the DC power into DC powers desired by loads, a capacitor to interconnect the converter and the SMPS, a PTC element connected to the converter, a first switch connected in parallel with the PTC element, and a second switch connected in series with the first switch. The method includes turning on the second switch to start charging of the capacitor, turning on the first switch to charge the capacitor to a target voltage level, and turning off both the first switch and second switch if a voltage across the capacitor rises over the target voltage level, to discharge the voltage across the capacitor so as to lower the voltage across the capacitor to the target voltage level or lower.

Power supply apparatus and method to control the same

Air conditioning and heating system drives convection fan motor to control distribution of indoor temperature by controlling device with the first sensor and the second sensor, wherein the first sensor and the second sensor is individually connected to controlling device of air conditioning and heating set, and radio transmission device is attached to air conditioning and heating set and remocon. According to difference of temperature between remocon and air conditioning and heating set, main controlling device controls convection motor, electronic pump, driver controlling portion. It has higher heat efficiency by dividing operation of emitting heat and cooling device into more steps.

Growing community of inventors

Seoul, South Korea

Joong Ki Moon