Circuit for muting noises in a power amplifier

Details Circuit for muting noises in a power amplifier Circuit for muting noises in a power amplifier

1994-03-03

1996-01-30

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

330 9, 330149, 330284, 307112, 327108, 327306, H03F 126

Patent

active

054882583

ABSTRACT:
A power detector is provided for detecting closing of a power switch in a power supply, for producing a power-on signal after a predetermined time from detection of the closing of the power switch. An abnormality detector is provided for detecting an abnormal voltage produced in a circuit of a power amplifier, for producing an abnormality signal when detected. In response to the power-on signal, an output stage of the power amplifier is activated, and the output stage is cut off in response to the abnormality signal.

REFERENCES:
patent: 4296278 (1981-10-01), Cullison et al.
patent: 5128567 (1992-07-01), Tanaka et al.

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