Back to results
US 2006/0187693 A1Published application
Power factor correction apparatus
OwnerAllen Pak Chuen Tanginventor
Life of this patent
Estimating the term…
Abstract
A power factor correction (PFC) apparatus is disclosed. The apparatus comprises a DC rectification circuit and a PFC auxiliary circuit. In this apparatus, the PFC auxiliary circuit is coupled between the input and output terminals of the DC rectification circuit. According, not only can the conduction time be increased, but the working current peak is restrained. Thus, the increased size of the choke and inductance of the inductor can be prevented.
Claims27
A power factor correction (PFC) apparatus, connecting and receiving an alternating current (AC) voltage output from an AC source, the PFC apparatus comprising:
- a DC rectification circuit, receiving the AC voltage and outputting a direct current (DC) voltage based on the AC voltage;
- a load, a first terminal of the load being coupled to a first output terminal of the DC rectification circuit, a second terminal of the load being coupled to a second output terminal of the DC rectification circuit;
- and
- a PFC auxiliary circuit, an input terminal of the PFC auxiliary circuit being electrically coupled to a positive AC input terminal of the AC source, while an output terminal of the PFC auxiliary circuit being electrically coupled to the first terminal of the load to provide part of a working current of the load.
1 more element
Dependencies are inferred from the claim text.