Uninterruptible power supply
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 24, 1995
Issued Date -
N/A
app pub date -
Jul 18, 1994
filing date -
May 14, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An uninterruptible power supply which is down-sized and lightened is provided. A utility line 1 is connected with a switch 8 and the switch 8 is connected with a rectifying circuit 2 and DC power from the rectifying circuit 2 inputs to a first inverter 3-1 and charges a battery 6 by a charger 7 connected with a node between the utility line 1 and the switch 8 and the DC power from the battery 6 is converted to AC power by a second inverter 3-2 to input to the rectifying circuit 2. When the utility line 1 is interrupted, AC power from the second inverter 3-2 is supplied to the rectifying circuit 2 to continuously supply power to a load 4. As a result, the number of cells in a battery may be reduced, the cost and man-day of the unit may be reduced, the reliability of the unit may be improved and the supply may be down-sized and lightened.
First Claim
Other Claims data not available
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 63 Citation Count
- H03M Class
- 0 % this patent is cited more than
- 30 Age