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US 4,048,573 AGranted
Amplifier improvements for limiting clipping
AssigneeMcIntosh Laboratory, Inc.
InventorsRonald C. Evans, Sidney A. Corderman
Life of this patent
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AssigneeMcIntosh Laboratory, Inc.
InventorsRonald C. Evans, Sidney A. Corderman
Estimating the term…
A differential amplifier is connected to an amplifier for comparing an amplifier input signal with the signal fed back by the amplifier feedback circuit. The output of the differential amplifier is coupled to a full wave rectifier the output of which controls an attenuator connected between a source of electrical input signals and the amplifier. When the amplifier is operating in its linear range, the differential amplifier inputs are identical and it does not produce an output. Under this condition, the input signal is not attenuated. However, in the presence of amplifier clipping, the differential amplifier produces an output which, after full wave rectification, operates to increase the attenuation, and thus reduce the amplitude of the signal applied to the amplifier; clipping is limited.
A device for maintaining linear amplification and to avoid clipping of an electrical signal applied to one input of an amplifier which amplifier includes a negative feedback coupling means coupling an amplified signal back to another input of said amplifier, said device comprising:
Dependencies are inferred from the claim text.