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Ferrite Head Coil High Impedance/continuity Tester

IP.com Disclosure Number: IPCOM000061896D
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Schneider, WJ: AUTHOR [+2]

Abstract

The use of conductive slider materials such as manganese zinc in magnetic transducer heads makes the matter of electrical short conditions between the transducer coil and the slider a critical matter. The most economically practical manner of testing for a short condition is to have the test occur during a regular processing operation.

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Ferrite Head Coil High Impedance/continuity Tester

The use of conductive slider materials such as manganese zinc in magnetic transducer heads makes the matter of electrical short conditions between the transducer coil and the slider a critical matter. The most economically practical manner of testing for a short condition is to have the test occur during a regular processing operation.

The circuit shown has a short response time to provide a fast measurement of conductivity. During the normal operation of cutting or trimming the ends of the transducer coil wire, a no resistance measurement occurs which latches the light emitting diode indicator "on" if shorting between coil and slider is sensed. This permits the conductivity test to occur without requiring extra time or a test procedure independent of the normal processing steps.

Disclosed anonymously.

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