DC-TO-DC CONVERTER

PROBLEM TO BE SOLVED: To improve efficiency of a transformer, to reduce a circuit scale and to reduce cost. SOLUTION: A circuit subsequent to a secondary of a transformer is constituted of a first system made of a transformer 9A and rectifying/smoothing means (10A, 11A and 12A) and a second system m...

Full description

Saved in:
Bibliographic Details
Main Author AKIYAMA KAZUNARI
Format Patent
LanguageEnglish
Published 09.07.1999
Edition6
Subjects
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To improve efficiency of a transformer, to reduce a circuit scale and to reduce cost. SOLUTION: A circuit subsequent to a secondary of a transformer is constituted of a first system made of a transformer 9A and rectifying/smoothing means (10A, 11A and 12A) and a second system made of a transformer 9b and rectifying/smoothing means (10B, 11B and 12B). The output voltage of the two systems are added, and final output voltage is obtained. When input voltage is not more than a prescribed value, the voltage whose duty ratio is 100% is applied to the first system and voltage whose duty ratio is variably controlled is applied to the second system. When input voltage is larger than a prescribed value, voltage whose duty ratio is variably controlled is applied to the first system and applied voltage to the second system is set to zero. Since voltage applied to the transformers is applied in the form of the duty ratio being larger than in a former case, a loss in the transformer is reduced.
Bibliography:Application Number: JP19970367301