Browse Prior Art Database

Multipath Transfer Circuit

IP.com Disclosure Number: IPCOM000098713D
Original Publication Date: 1959-Oct-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Kahn, AA: AUTHOR [+2]

Abstract

The drawing shows a two core per bit transfer circuit employing multipath cores of bistable magnetic material and single turn drive and connecting windings. The arrows in the flux chart below indicate the direction of flux in the legs of the cores directly above following each drive pulse. The drive pulses are applied in the order shown by the pulse symbols superimposed on the drive lines.

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Multipath Transfer Circuit

The drawing shows a two core per bit transfer circuit employing multipath cores of bistable magnetic material and single turn drive and connecting windings. The arrows in the flux chart below indicate the direction of flux in the legs of the cores directly above following each drive pulse. The drive pulses are applied in the order shown by the pulse symbols superimposed on the drive lines.

Assume that core A1 is initially in an information holding state and that cores B1, A2, and B2 are in a reset state as shown by the top row of arrows in the chart. Application of an A pulse reverses the flux in legs 3 and 4 of core A1. The reversal of flux in leg 4 transmits a signal through coupling loop c to core B1 to switch its legs 1 and 3. The magnitude of this pulse is great enough to cause switching of one short path (legs 3 and 4 of core A1) and one long path (legs 1 and 3 of core B1) but not great enough to switch two long paths (legs 2 and 4 of core A2 and legs 1 and 3 of core B2) so no change is produced in any cores except A1 and B1. No back transfer occurs as a result of pulse A since the flux in leg 1 of core A1 is in the reset direction.

The following pulse RA resets core A1 by reversing the flux in legs 2 and 4. The reversal of leg 4 transmits a signal through coupling loop c to switch legs 1 and 2 of core B1. Core B1 is thus placed in the information. holding state initially occupied by core A1. Leg 1 of core B1 now being in the rese...