System and method for employing variable magnetic flux bias...

Details System and method for employing variable magnetic flux bias... System and method for employing variable magnetic flux bias...

2006-05-18

2008-03-25

Nguyen, Patricia (Department: 2817)

Amplifiers

Output networks

Transformer coupled

C330S165000, C330S171000, C330S190000

Reexamination Certificate

active

07348845

ABSTRACT:
A system and method for employing variable magnetic flux bias in an amplifier. The amplifier system comprises an output transformer and a magnetic sensor configured to sense a first magnetic flux of the output transformer. The magnetic sensor generates a flux signal responsive to the first magnetic flux. Control circuitry is configured to receive the flux signal and to generate a control signal responsive to the flux signal. A winding is configured to receive the control signal and to induce a second magnetic flux within the output transformer responsive to the control signal, the second magnetic flux having opposite polarity to the first magnetic flux. The second magnetic flux may maintain a non-zero quiescent magnetic bias level within the output transformer, or may substantially cancel or null the DC and low-frequency subsonic components of the first magnetic flux.

REFERENCES:
patent: 1448550 (1923-03-01), Arnold et al.
patent: 4075671 (1978-02-01), Cheatham et al.
patent: 5422599 (1995-06-01), Larsen
patent: 5438499 (1995-08-01), Bonte et al.
patent: 6400580 (2002-06-01), Bowman et al.
patent: 6958920 (2005-10-01), Mednik et al.
patent: 7130204 (2006-10-01), Tsuruya
Gilbert, Joe et al., “Linear Hall-Effect Sensors”, Applications Information, date unknown, 2002, pp. 1-12, Allegro MicroSystems, Inc., Worcester, U.S.A.
Langford-Smith, F.,“Radiotron Designer's Handbook,” 1953, 4th Edition, pp. 214-215, Wireless Press, Sydney, Australia.

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