Chicony Power Technology Co., Ltd.

Shenzhen Treasure City Technology Co., Ltd.

Mean Well (guangzhou) Electronics Co., Ltd.

Chih-Yuan Chang

Yong-Xin Wang

Chao-Guang Zhi

Ying-Hung Yen

Chin-Chung Fu

A power supply device includes a housing having a socket opening, and a pair of sliding grooves are formed on the socket opening. A guiding piece is formed at a bottom of each sliding groove, and the guiding piece includes a positioning section and a guiding section. A power socket passes through the sliding grooves along the guiding section, and one side of the power socket is abutted against the positioning section so as to contact the socket opening. A cover plate is provided with a pair of clips corresponding to the sliding grooves, and the clips are inserted into the pair of sliding grooves and abutted against a side of the power socket for positioning the power socket.

Combination structure of socket of power supply device

The present invention particularly discloses a control circuit comprising a signal detection unit and a controller unit for reducing power loss of a LLC resonant converter during light-load or no-load operation. In the present invention, the signal detection unit is adopted for sensing a primary-side current from a transformer unit of the LLC resonant converter, and then converting the primary-side current to a reference voltage signal. Thus, according to a level variation of the reference voltage signal, the controller unit is able to properly regulate duty cycle of a switch controlling signal based on a duty cycle reduction percentage. Eventually, by using the switch controlling signal to control the periodic ON-OFF switching of power switches, power loss of the LLC resonant converter operated under light load or no load can be obviously reduced; moreover, working temperature of the power switches is simultaneously lowered.

Control circuit for reducing power loss of LLC resonant converter during light-load or no-load operation

An electronic device includes an enclosure, a display module, a key part, and a water proof structure. The water proof structure seals a first gap between the display module and enclosure and a second gap between the display module and the key part and drains water which flows into the enclosure to the outside of the enclosure.

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Taipei, Taiwan

Chih-Yuan Chang