BTL amplifier apparatus

Details BTL amplifier apparatus BTL amplifier apparatus

2006-08-15

2006-08-15

Tran, Sinh (Department: 2615)

Electrical audio signal processing systems and devices

Noise or distortion suppression

Soft switching, muting, or noise gating

C381S120000, C381S055000

Reexamination Certificate

active

07092533

ABSTRACT:
A BTL amplifying apparatus has two power amplifiers in an BTL configuration for amplifying a speaker. It includes detection means for detecting a differential voltage between outputs from the two power amplifiers while an input signal to be supplied to the power amplifiers is muted, and decision means for deciding whether or not the differential voltage is larger than a prescribed voltage. Such a configuration prevent the speaker from being damaged.

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patent: 5834977 (1998-11-01), Maehara et al.
patent: 5939938 (1999-08-01), Kalb et al.
patent: 0 736 970 (1996-10-01), None

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