Floating bridge amplifier system

Details Floating bridge amplifier system Floating bridge amplifier system

2007-03-06

2007-03-06

Nguyen, Khanh Van (Department: 2817)

Amplifiers

Wheatstone bridge with amplifier in at least one arm

C330S20700P, C330S251000

Reexamination Certificate

active

11039037

ABSTRACT:
An audio amplifier system includes at least a pair of DC power supplies, a floating bridge current gain output section, and a differential voltage gain input section that draws operating current from the DC power supplies through floating DC current regulators. The included current regulators reject power supply noise and modulation and provide a floating current path for establishing positive and negative operating voltages for the voltage gain section. Cross-coupled interstage loading enables nearly rail-to-rail output voltage swing while providing local feedback around the output section for reduced distortion and improved output load control. The floating current regulators in the circuit exhibit enhanced performance as a result of suppressed operating voltage fluctuations.

REFERENCES:
patent: 2828369 (1958-03-01), Wiggins
patent: 4586000 (1986-04-01), Wagner
patent: 5003271 (1991-03-01), Swanson
patent: 6242977 (2001-06-01), Karsten
patent: 6396340 (2002-05-01), Schmitt et al.
patent: 6747513 (2004-06-01), Berry

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