Method of preventing abrupt voltage changes at the outputs...

Details Method of preventing abrupt voltage changes at the outputs... Method of preventing abrupt voltage changes at the outputs...

2007-06-12

2007-06-12

Pascal, Robert (Department: 2817)

Amplifiers

Sum and difference amplifiers

C330S146000, C330S051000

Reexamination Certificate

active

11022020

ABSTRACT:
A common mode control circuit reduces abrupt voltage changes at the outputs of a pair of amplifiers which, in turn, reduces EMI and distortions that occur when the correlation between the signals fed to the four channels of an audio system diminishes. The common mode control circuit generates for each amplifier a reference potential that is a saturated replica of the respective differential input signal of the amplifier that saturates when the amplifier switches to a bridge configuration.

REFERENCES:
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patent: 5444417 (1995-08-01), Botti et al.
patent: 5621352 (1997-04-01), Botti et al.
patent: 5654668 (1997-08-01), Botti et al.
patent: 6563380 (2003-05-01), Huijser
patent: 7053704 (2006-05-01), Forel et al.
patent: 0487133 (1992-05-01), None
patent: 0587965 (1994-03-01), None

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