Amplifier system and method

Details Amplifier system and method Amplifier system and method

2006-09-12

2006-09-12

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S251000, C381S120000

Reexamination Certificate

active

07106135

ABSTRACT:
An amplifier system comprises an amplifier, a comparator connectable to the amplifier to compare an incoming signal with a number of reference potentials. A switching stage is controlled by the output of the comparator and arranged to select a voltage level to be applied to one side of a load, such as a loudspeaker system. A subtractor is included to subtract from the incoming signal a percentage of the selected voltage level to be applied to the load. The amplifier receives the output signal of the subtractor, amplifies that signal and applies it to a second side of the load. There is also disclosed a method for amplifying a signal.

REFERENCES:
patent: 3319175 (1967-05-01), Dryden
patent: 3585517 (1971-06-01), Herbert
patent: 4054843 (1977-10-01), Hamada
patent: 6373340 (2002-04-01), Shashoua
patent: 6396933 (2002-05-01), Jung
patent: 6496059 (2002-12-01), Nguyen
patent: 6696891 (2004-02-01), Noro et al.

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