Sound signal amplifier with low power dissipation

Details Sound signal amplifier with low power dissipation Sound signal amplifier with low power dissipation

1993-01-28

1994-07-26

Mottola, Steven

Amplifiers

With plural amplifier channels

Redundant amplifier circuits

381 28, H03F 368

Patent

active

053329767

ABSTRACT:
An amplifier for sound signals is made up of an even number of power amplifiers each of which have each an output, wherein each amplifier output can be switched to a first terminal of an associated loudspeaker and in which the second terminals of the loudspeakers can be switched to an output of a buffer amplifier. In order to minimize power losses, the buffer amplifier supplies at its output a DC voltage which is about half the value of the supply voltage of the power amplifiers. In addition, half the power amplifiers supply an output signal that is inverted relative to their input signal.

REFERENCES:
patent: 3542953 (1967-08-01), Munch
patent: 4321428 (1982-03-01), Seke
patent: 4441086 (1984-04-01), Karlow
patent: 4528686 (1985-07-01), Dressler
patent: 4827221 (1989-05-01), Botti et al.

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