Loudspeaker protection circuit

Details Loudspeaker protection circuit Loudspeaker protection circuit

1975-06-16

1976-05-25

Mullins, James B.

Amplifiers

Miscellaneous

Amplifier protection means

179 1A, 179 1SW, H03F 2100

Patent

active

039597369

ABSTRACT:
A power amplifier and loudspeaker protection circuit for a receiver having an AC potential source with a center-tap transformer shunted by a full-wave bridge rectifier and a power amplifier directly coupled to a loudspeaker connected to a potential reference level includes a thermal relay means coupling the bridge rectifier through normally closed contacts to a power amplifier stage and an impedance coupling the transformer center-tap to a potential reference level to activate the thermal relay means and disconnect the potential source in response to increased current flow in a loudspeaker.

REFERENCES:
patent: 3512097 (1970-05-01), Tyler

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