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Magnetic Circuit Analyzer

IP.com Disclosure Number: IPCOM000076916D
Original Publication Date: 1972-May-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Viele, L: AUTHOR

Abstract

Imperfections, defects, variations, etc., in magnetic circuits may be identified and measured with a display of the current/voltage phase relationship in the circuit.

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Magnetic Circuit Analyzer

Imperfections, defects, variations, etc., in magnetic circuits may be identified and measured with a display of the current/voltage phase relationship in the circuit.

A DC biased high-frequency signal is applied to a magnetic circuit through a known resistance. A cathode-ray oscilloscope (CRO) or other x-y recorder displays the voltage e across, versus the current i through, the circuit as shown in Fig. 2. Discontinuities in the magnetic circuit cause irregularities A and B in the display. For example, point A occurs when the gap saturates and point B is caused by an imperfection. The magnitude of display X(L) indicates the inductance of the circuit and, therefore (for known frequency, turns, area, coupling, and length), its permeability.

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