Title:
POWER SUPPLY DEVICE OF INSULATED LOW VOLTAGE
Document Type and Number:
Japanese Patent JP2004215498
Kind Code:
A
Abstract:
To provide an insulating circuit feeding power at a low voltage to a control circuit of a load of a high voltage in the intermediate or the upstream of a full-wave three-phase rectification bridge.
The insulating circuit is provided with a first low-voltage capacitor connecting a first electrode to one of rectifying output terminals of the bridge and at least one second capacitor supplying a low voltage, a first electrode of the second capacitor is connected to one of AC input terminals of the bridge, respective second electrodes of the capacitors are connected by a high voltage diode with a cathode connected to the second capacitor.
Inventors:
PERON BENOIT
GAUTIER FREDERIC
GAUTIER FREDERIC
Application Number:
JP2003427179A
Publication Date:
July 29, 2004
Filing Date:
December 24, 2003
Export Citation:
Assignee:
ST MICROELECTRONICS SA
International Classes:
H02M5/257; H02M7/06; H02M7/12; (IPC1-7): H02M7/12; H02M7/06
Attorney, Agent or Firm:
Keiichi Yamamoto