Reproducing circuit having common base amplifier, low-pass filte

Details Reproducing circuit having common base amplifier, low-pass filte Reproducing circuit having common base amplifier, low-pass filte

1993-10-25

1995-05-16

Psilos, Aristotelis

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

324252, G11B 509, G01R 3302

Patent

active

054166454

ABSTRACT:
A magnetoresistive element of a magnetoresistive head is connected to the emitter of a first-stage transistor which serves as a common base amplifier. A base current supplied to the base of the first-stage transistor is adjusted to equalize a sensing current to an emitter current. A reproducing circuit of such an arrangement requires no sensing current source and no DC blocking capacitor.

REFERENCES:
patent: 4492997 (1985-01-01), Arai et al.
patent: 4691259 (1987-09-01), Imakoshi et al.
patent: 4703378 (1987-10-01), Imakoshi et al.
patent: 4712144 (1987-12-01), Klaasen
patent: 4716306 (1987-12-01), Sato et al.
patent: 4734644 (1988-03-01), Imakoshi et al.
patent: 4954906 (1990-09-01), Nakamura et al.
patent: 5155643 (1992-10-01), Jones, Jr. et al.
patent: 5204789 (1993-04-01), Jove et al.
IBM Technical Disclosure Bulletin, Mar. 1991, "Prefiltering in the Design of Peristaltic Envelope Detectors", vol. 33, No. 10B.
Patent Abstracts of Japan, Jul. 1985, "Detecting Circuit For Resistance Change", vol. 9, No. 163.
IBM Technical Disclosure Bulletin, Aug. 1988, "Voltage Biasing of Single-Ended Mr Elements", vol. 31, No. 3, pp. 369-371.
Patent Abstracts of Japan, Jun. 1992, "Magnetic Sensor For Detecting Marking", vol. 16, No. 252.
Patent Abstracts of Japan, Feb. 1984, "Bias System of Head Using Magnetic-Resistance Effectelement", vol. 8, No. 38.

Affiliated with

Also associated with

Rating

Reproducing circuit having common base amplifier, low-pass filte does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reproducing circuit having common base amplifier, low-pass filte, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reproducing circuit having common base amplifier, low-pass filte will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-642390