Amplifiers – Signal feedback – Combined with control of bias voltage of signal amplifier
Patent
1979-09-28
1981-11-17
Konick, Bernard
Amplifiers
Signal feedback
Combined with control of bias voltage of signal amplifier
330207P, H02H 320, H02H 720
Patent
active
043013309
ABSTRACT:
A loudspeaker protection circuit senses an overload condition caused by an improper input signal or a fault within the amplifier by sensing a DC or infrasonic signal applied to the loudspeaker. The time between zero (axis) crossings of the amplifier output signal, which are related to the lower frequency components of the signal, are detected. If the period of time between zero crossings exceeds a predetermined time limit, the supply of the amplifier output signal to the loudspeaker is interrupted. In order to prevent false tripping of the circuit by normal conditions, the circuit only responds to signals exceeding a predetermined voltage level.
REFERENCES:
patent: 3828258 (1974-08-01), Hills et al.
patent: 3835336 (1974-09-01), Block
patent: 3882545 (1975-05-01), Titus
patent: 3959735 (1976-05-01), Grosjean
patent: 3965295 (1976-06-01), Evans et al.
patent: 3988694 (1976-10-01), Yamazaki
patent: 4034268 (1977-07-01), Klauck
patent: 4122400 (1978-10-01), Medendorp et al.
patent: 4122507 (1978-10-01), Queen
patent: 4127743 (1978-11-01), Ozawa et al.
patent: 4173740 (1979-11-01), Nagata et al.
Hill Thomas E.
Konick Bernard
Myers Randall P.
Zenith Radio Corporation
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