Build Your Own Sweeping Function Generator:
Sine Converter and Board Layout
by Dennis Feucht
Sine Converter
The sine converter is a classic diode-resistor multiple-breakpoint shaper.
It achieves an approximately piecewise-linear sinusoid approximation, and
is based on optimizing the breakpoint locations to minimize function error
by uniformly spreading the error across the range of the function. The five-breakpoint
circuit is shown below.
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