Electric power conversion systems – Current conversion – Using semiconductor-type converter
Patent
1996-03-29
1997-07-22
Hecker, Stuart N.
Electric power conversion systems
Current conversion
Using semiconductor-type converter
323349, H02M 7217
Patent
active
056509243
ABSTRACT:
Disclosed is an electric power supply device having mininized power consumption during an off-mode of a monitor. The present invention has an electric power input unit including a bridge diode for outputting an output signal by rectifying an alternate electric signal supplied from the external, a switch for switching to pass the first signal, and a capacitor for rectifying the first signal of the bridge diode and supplying the rectified first signal to a primary winding of a transformer; an electric power economizer for generating a switching signal in order to control the switch according to presence or non-presence of a synchronizing signal inputted from the external, and for preventing the transformer from being operated by switching the switch to a turn-off state during an off-mode of the monitor; and an electric power supplier for rectifying induced signals of one or more secondary windings of the transformer, and for stabilizing the rectified induced signals to supply the stabilized and rectified induced signals to one or more loads. With the present invention, consumption of electric power can be minimized since during an off-mode of a monitor a transformer is disabled.
REFERENCES:
patent: 4794507 (1988-12-01), Cavigelli
patent: 5119285 (1992-06-01), Liu et al.
patent: 5254937 (1993-10-01), Mizoguchi
Daewoo Electronics Co. Ltd.
Hecker Stuart N.
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