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Magnetic Core Circuit

IP.com Disclosure Number: IPCOM000098224D
Original Publication Date: 1960-Apr-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Drangeid, KE: AUTHOR

Abstract

The two branch symmetrical magnetic core circuit is utilized as an elementary circuit in the design of flip flops, shift registers, serial and parallel adders, etc. The transfer of data from one stage to the next by switching pulses is effected due to the differences of impedance of the core windings for pulses of given polarity depending on the state of remanence of the respective cores.

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Magnetic Core Circuit

The two branch symmetrical magnetic core circuit is utilized as an elementary circuit in the design of flip flops, shift registers, serial and parallel adders, etc. The transfer of data from one stage to the next by switching pulses is effected due to the differences of impedance of the core windings for pulses of given polarity depending on the state of remanence of the respective cores.

A stored 1 bit is represented when the left core of a pair of cores is in the 1 state and the right core in the 0 state. A stored 0 bit is represented by the opposite states. A current pulse passing a core in a downward direction tends to set it into the 1 state, while a pulse in the upward direction tends to set the core into the 0 state. A 1 bit stored in the upper pair of cores 1, 2 is shifted to a succeeding pair of cores 3, 4 by applying a current pulse to terminal 5. Since the winding of core 2 (in the 0 state) represents a high impedance and the winding of core 1 (in the 1 state) represents a low impedance, the current in the right branch is limited to a value i(l) (current diagram) and the main portion of the current passes into the left branch. The two cores 3, 4 are driven by a magnetizing force determined by the number of turns of the control windings and the difference between i(h) and i(l). After the time t(s), the left core 3 and the right core 4 will have been switched to the 1 and 0 states, respectively, thus storing a 1. After switching of...