Self-configurable, dual bridge, power amplifier

Details Self-configurable, dual bridge, power amplifier Self-configurable, dual bridge, power amplifier

1995-08-21

1997-04-15

Mullins, James B.

Amplifiers

Combined with automatic amplifier disabling switch means

330 84, 330124R, 330146, 330295, H03F 368

Patent

active

056213522

ABSTRACT:
A self-configurable, dual bridge, power amplifier has a window comparator sensing the level of input signals fed to the amplifier which-drives a plurality of configuring switches capable of configuring the amplifier as a single bridge amplifier driving a first and a second loads connected in series or as two distinct bridge amplifiers each driving one of the two loads. As long as the two levels of the input signals remain comprised between a range defined by a negative voltage reference and a positive voltage reference, the amplifier is configured as a single bridge driving the two loads in series, thus reducing sensibly power dissipation. Several embodiments of the configuring means are shown.

REFERENCES:
patent: 3944941 (1976-03-01), Tsuda
patent: 4494077 (1985-01-01), Fukaya et al.
patent: 5101170 (1992-03-01), Turazzina et al.
patent: 5194821 (1993-03-01), Brambilla et al.
patent: 5414774 (1995-05-01), Yumoto
European Search Report from European Patent Application Number 93830070.4, filed Feb. 24, 1993.

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