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Multipath Magnetic Core Transistor Translator

IP.com Disclosure Number: IPCOM000097529D
Original Publication Date: 1961-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Lockhart, NF: AUTHOR [+2]

Abstract

The translator shown in the lower drawing receives binary coded decimal signals and converts them to signals in a one out of ten code. That is, when the binary inputs are activated so as to indicate any number between one to ten, the single output line corresponding to that number is activated. Each of the devices 51...58 comprises a multipath magnetic core shown in the upper left-hand drawing. These cores are interconnected by means of transistor circuits such as the circuit shown in the upper right-hand drawing.

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Multipath Magnetic Core Transistor Translator

The translator shown in the lower drawing receives binary coded decimal signals and converts them to signals in a one out of ten code. That is, when the binary inputs are activated so as to indicate any number between one to ten, the single output line corresponding to that number is activated. Each of the devices
51...58 comprises a multipath magnetic core shown in the upper left-hand drawing. These cores are interconnected by means of transistor circuits such as the circuit shown in the upper right-hand drawing.

As shown in the upper left hand drawing, each multipath core has two inputs designated P and Q and several outputs. The Boolean expressions with which the outputs are labeled designate the conditions under which the various outputs are activated. A reset winding is also provided to return the flux in the core to an initial condition.

The AND output is obtained by connecting an OR output with two AND NOT outputs as follows: P * Q = (P v Q) * bar(bar PQ v P bar Q). The EXCLUSIVE OR output is obtained by connecting two AND NOT windings in series aiding as follows: P v Q = P * bar Q v bar P * Q.

In order to interconnect a plurality of cores (see the upper righthand drawing) each output winding is used to supply a signal to the base of a transistor, to cause a variation in the collector current. The current in the collector of the transistor is used as the input for a second magnetic core.

The manner in which the...