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Programmable Regulator Card

IP.com Disclosure Number: IPCOM000089473D
Original Publication Date: 1977-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Mumaw, AJ: AUTHOR

Abstract

A single voltage regulator card or module can be made to have any one of several output voltages by providing a plurality of selectable bias resistors on the regulator cards, each going to a different output pin which can operate in conjunction with preprogrammed connections on the card receptor to permit the selection of the desired voltage level.

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Programmable Regulator Card

A single voltage regulator card or module can be made to have any one of several output voltages by providing a plurality of selectable bias resistors on the regulator cards, each going to a different output pin which can operate in conjunction with preprogrammed connections on the card receptor to permit the selection of the desired voltage level.

As shown in the figure, this may be done by including a ladder network of input resistors 11, 13, 15, 17 and 19, each going to a different output pin connection and thereby being capable of providing, for example, an output voltage at V(0) of 5 volts, 6 volts, 8.5 volts, 12 volts or 20 volts. The output pin connection would remain the same, thereby permitting the same part number to be used anywhere in an assembly. This would reduce the number of cards that must be stocked for spare parts and replacements, as well as reduce the number of different cards that must be stocked.

This concept can be extended, for example, to select appropriate resistors for overvoltage/undervoltage sense circuitry and for overcurrent sense circuitry. The only real limitation on the universality of a card is in the number of card input/output pins which are available to be connected to the variably selective resistors. In other instances, depending on the application, rather than using resistors, selected capacitors or coils may be used in a ladder-like network.

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