Browse Prior Art Database

Buffered Power Supply

IP.com Disclosure Number: IPCOM000083922D
Original Publication Date: 1975-Aug-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Young, FG: AUTHOR

Abstract

Batteries 10, 12, 14 are switched alternatively and in sequence between the input and output circuits of this supply, so as to provide complete isolation from surges and outages in the source 16.

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Buffered Power Supply

Batteries 10, 12, 14 are switched alternatively and in sequence between the input and output circuits of this supply, so as to provide complete isolation from surges and outages in the source 16.

AC source 16 is connected via transformer 18 and controlled rectifier 20 to input buses 22, 24. Commutator disc system 26 connects each battery 10, 12, 14 in turn across buses 22, 24 for 120 degrees of the rotation of system 26 to charge the batteries. After each battery receives an increment of charge in this manner, its connection to buses 22, 24 is broken, and about 60 degrees later, it is connected for 120 degree across output buses 28, 30 to deliver power thereto. Capacitor 32 smooths any discontinuities resulting from the sequential switching operation.

The switching operations of the batteries are approximately 120 degrees apart, with a working overlap, the operation being so that, in sequence, at least one battery is connected across buses 22. 24; and at least one is connected across buses 28, 30. At no time is any battery connected to both buses 22, 24 and 28, 30. Therefore, there is complete isolation between the input and output. Thus, no surges or dips in source 16 can reach buses 28, 30. Depending on the size of the batteries, the supply can continue for a time after any outage in source 16.

Motor 34 for rotation of system 26 is powered from the buffered side of the system, at buses 28, 30 as shown, or, if desired, from the regulated ou...