Sine-shaping circuit
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United States of America Patent
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-
Jul 26, 1983
Issued Date -
N/A
app pub date -
Dec 11, 1980
filing date -
Nov 8, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit for converting a triangular waveform into a sinusoidal waveform using the non-linear transfer characteristic of a first transistor differential amplifier. Second and third differential amplifiers are parallel-connected to said first differential amplifier with the slopes of their transfer characteristics in opposite sense thereto and having their operating points shifted on their transfer characteristics in opposite directions with regard to each other and symmetrically to the operation point of said first differential amplifier so that the resulting overall transfer characteristic of said first, second and third differential amplifiers has zero slope at the extremal amplitudes of said triangular waveform.
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