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Electrical Decimal Comparison Circuit

IP.com Disclosure Number: IPCOM000098267D
Original Publication Date: 1960-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Locke, PE: AUTHOR

Abstract

The circuit determines if a particular digit is larger than a selected limit digit. The decimal limit selected closes the corresponding limit switch. An incoming signal for which comparison is desired has two possible paths. If the signal is equal to or smaller than the limit, the signal goes directly to ground producing no voltage across output resistor R(o).

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Electrical Decimal Comparison Circuit

The circuit determines if a particular digit is larger than a selected limit digit. The decimal limit selected closes the corresponding limit switch. An incoming signal for which comparison is desired has two possible paths. If the signal is equal to or smaller than the limit, the signal goes directly to ground producing no voltage across output resistor R(o).

A signal on an input terminal, greater in value than the limit, cannot pass through the diodes of digits of lower value than itself and, therefore, proceeds to resistor R(o) through the remaining diodes thus developing an output voltage. Other combinations of limiting are possible by reversing diodes, changing limit switch sequence, etc.

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