Output stage for amplifiers
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United States of America Patent
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Apr 13, 1993
Grant Date -
N/A
app pub date -
Oct 23, 1991
filing date -
Nov 15, 1990
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Abstract
An output stage for an amplifier includes first and second load current-carrying n-p-n output transistors disposed in different respective amplifier branches having different amplification properties. Negative feedback and limiting circuitry provides a negative feedback current to the first one of the output transistors and limits the negative feedback current to a preselected maximum value over a predetermined output current range whereby the amplification properties of the first one of the output transistors are affected in a range of output voltages of the amplifier stage.
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