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Browse Prior Art Database

Power Supply for Large Computers

IP.com Disclosure Number: IPCOM000092091D
Original Publication Date: 1968-Sep-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Buckminster, IH: AUTHOR

Abstract

In this power supply distribution system for a large computer, the three-phase primary power is coupled to a full-wave bridge rectifier 10 to provide the power for the whole system. This power is distributed through a plurality of parallel branches 12a...12n. Each parallel branch comprises a switching regulator 14, the output of which is coupled through stepdown transformer 16 to full-wave rectifier 18. Utilizing a frequency of several kilohertz, a relatively small storage capacitor 20 is provided for filtering the voltage to load 22. The voltage to load 22 is compared in compare amplifier 24 with a voltage from voltage reference 26. The resultant signal from this comparison is coupled through pulse transformer 27 as a feedback signal to regulator 14 to adjust the input voltage if necessary.

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Power Supply for Large Computers

In this power supply distribution system for a large computer, the three- phase primary power is coupled to a full-wave bridge rectifier 10 to provide the power for the whole system. This power is distributed through a plurality of parallel branches 12a...12n. Each parallel branch comprises a switching regulator 14, the output of which is coupled through stepdown transformer 16 to full-wave rectifier 18. Utilizing a frequency of several kilohertz, a relatively small storage capacitor 20 is provided for filtering the voltage to load 22. The voltage to load 22 is compared in compare amplifier 24 with a voltage from voltage reference 26. The resultant signal from this comparison is coupled through pulse transformer 27 as a feedback signal to regulator 14 to adjust the input voltage if necessary. The circuit also has the advantage that logic circuits 28, shown dotted, for power sequencing control can be coupled between amplifier 24 and transformer 27 so that this control can be accomplished with logic level signals rather than utilizing relays.

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