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Securing an Inductance Value

IP.com Disclosure Number: IPCOM000097159D
Original Publication Date: 1962-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 26K

Publishing Venue

IBM

Related People

Homan, WJ: AUTHOR

Abstract

The device automatically laps the pole tips of a magnetic transducer until a predetermined coil inductance is reached. Since the crosssectional area of the recording gap affects the coil inductance, it is possible to trim the pole tips to obtain the desired inductance.

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Securing an Inductance Value

The device automatically laps the pole tips of a magnetic transducer until a predetermined coil inductance is reached. Since the crosssectional area of the recording gap affects the coil inductance, it is possible to trim the pole tips to obtain the desired inductance.

Transducer 1 is spring-loaded against a non-magnetic lapping wheel 2. Coil 3 is connected to an inductance-sensitive circuit 4, such as an oscillator which is pretuned for the desired inductance. When the pole tips are lapped to this inductance, circuit 4 functions and triggers latch 5. The latter operates solenoid 6 to release the spring loading on transducer 1.

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