[sdiy] H11F1 VCR Experiment

[Scott Gravenhorst]

As I expected, distortion becomes apparent when the input signal is more
than 100 mV P-P.  With a triangle input, the distortion presents itself as
a spline instead of a straight ramp.  It is quite symmetrical, however, so
it might be useful in some voltage controlled distortion/waveshaping
applications (which I will give some thought).  I tested the H11F1 as a
shunt device fed by both a 10K and a 100K resistor from a buffered AC
source.  Feed resistor size made little difference in performance.

So for my application, it seems any sort of FET for filter tuning will
simply not work.

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-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
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