Patent Number: 7,709,974

Title: Power supply device

Abstract: Provided is a power supply device including a power supply unit that supplies a driving voltage for driving at least one or more loads; a current balancing unit that maintains a current balance of the driving voltage supplied to the respective loads; a detection unit that detects currents flowing in the current balancing unit through electromagnetic induction so as to output a detection signal; and a control unit that receives the detection signal to judge whether the loads are opened or not and outputs a control signal for controlling the magnitude of the driving voltage.

Inventors: Hong; Young Gun (Suwon-si, KR), Kim; Hyo Young (Suwon-si, KR), Kim; Ku Yong (Suwon-si, KR), Oh; Dong Seong (Incheon, KR), Won; Jae Sun (Suwon-si, KR)

Assignee: Samsung Electro-Mechanics Co., Ltd.

International Classification: H02J 3/00 (20060101); H05B 37/00 (20060101); H05B 41/16 (20060101)

Expiration Date: 5/04/12018