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Magnetic Core Ring Circuit

IP.com Disclosure Number: IPCOM000098258D
Original Publication Date: 1960-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Lawrence, WW: AUTHOR

Abstract

The circuitry makes use of self propagating type transfer circuits to provide a highly versatile ring.

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Magnetic Core Ring Circuit

The circuitry makes use of self propagating type transfer circuits to provide a highly versatile ring.

In the quiescent state the transistors 1 of the several stage circuits are biased off. The cores 2 and 3 of each stage are maintained in the 0 state by D. C. current flow from + V through their windings 2a and 3a to ground. Control core 4 of each stage is normally in the 1 state. Upon application of an input pulse to input winding 2b, core 2 is driven to the 1 state, producing an output in winding 2c to activate transistor 1. When transistor 1 becomes conductive, current flow is established from ground to -V through windings 3a and 4a to set cores 3 and 4, and through winding 2a to hold transistor 1 in conduction until core 2 has fully switched. Since core 4 was already in the 1 state, no output appears on winding 4b. The output developed in winding 3b is unopposed and is transmitted to the next succeeding stage. Upon termination of the regenerative feedback through core 2, transistor 1 is cut off, and the D. C. current through windings 2a and 3a restores cores 2 and 3 to the reset state. With core 4 initially in the 1 state, each stage thus acts as a self-propagating delay network.

When the core 4 of any stage is driven to the 0 state by application of a control pulse to winding 4c, operation of the circuit is modified. Upon activation of transistors 1, both cores 3 and 4 are set and the opposing outputs in windings 3b and 4b cancel,...