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Determining the Mass of Ferrite Memory Cores

IP.com Disclosure Number: IPCOM000091704D
Original Publication Date: 1968-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

Geldermans, P: AUTHOR

Abstract

In manufacturing process control, it is necessary to determine the mass of individual ferrite cores after manufacture. The total magnetic moment of a body is proportional to a the mass and b specific magnetic moment of that body. In this system for the determination of the mass of ferrite cores, the cores 1 are placed in the air gap of the magnetic circuit 2 which is excited by winding 3. The effect of cores 1 on circuit 2 is detected by sense winding 4. The latter responds to the change in magnetic flux or reluctance of circuit 2, thus providing a measure of the magnetic moment of core 1. Bias winding 5 is used to select the operating point and reduce noise.

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Determining the Mass of Ferrite Memory Cores

In manufacturing process control, it is necessary to determine the mass of individual ferrite cores after manufacture.

The total magnetic moment of a body is proportional to a the mass and b specific magnetic moment of that body. In this system for the determination of the mass of ferrite cores, the cores 1 are placed in the air gap of the magnetic circuit 2 which is excited by winding 3.

The effect of cores 1 on circuit 2 is detected by sense winding 4.

The latter responds to the change in magnetic flux or reluctance of circuit 2, thus providing a measure of the magnetic moment of core 1.

Bias winding 5 is used to select the operating point and reduce noise.

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