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Browse Prior Art Database

Direct Coupled Magnetoresistive Head

IP.com Disclosure Number: IPCOM000083501D
Original Publication Date: 1975-Jun-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Cheatham, SD: AUTHOR

Abstract

The device as depicted shows a method for coupling a magnetoresistive (MR) head to a transformer without an intermediate amplifier.

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Direct Coupled Magnetoresistive Head

The device as depicted shows a method for coupling a magnetoresistive (MR) head to a transformer without an intermediate amplifier.

Conventional practice is to position an amplifier between the MR head and the transformer. With the conventional configuration, a more complex circuitry is required for proper operation.

As is shown, MR head 10 is connected in series with transformer 12 to form a first combination 18. Similarly, MR head 14 is connected in series with transformer 16 to form a second combination 20.

The first combination 18 and the second combination 20 are connected in parallel, and a bias voltage source is applied in series with the parallel combination.

With the above configuration, bias current is supplied to the MR heads 10 and 14, and signals from the MR heads are directly coupled to the transformers 12 and 16, respectively.

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