Had built an analog device some months back with a comparator
chip to convert a variable-frequency, variable-amplitude sine-ish wave
signal to a digital square-wave signal with just variable frequency.
The comparator just switched the output from Lo to Hi when the input
crossed a certain threshold.  Worked well -- a most exhilarating
feeling since my analog-circuit knowledge is not too great.

The only thing I was not sure of was the max amplitude of the input,
but I've been thinking about it again since I heard recently that it
could go as high as 24V or more, and power supply is only 8V to the
comparator.

Keeping the same 8V supply, is there an easy way to pre-"clip" or
pre-limit the input to approx 8V before it gets to the comparator,
but still maintaining a high input impedance?

Thanks,
-Neil.

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