Update: hoping I'm doing math correctly. ;)
On 10/20/06, sasami@... <sasami@...> wrote:
>
> Use 1k resistors - this will give you 100 to 1 ratio across the sweep of
> the
> pots. Increase the 10n capacitors to 100n to bring the frequency back to
> something usable. Watch the 74C14 doesn't get too hot. It shouldn't get
> hot
> at all, but if it does, increase the 1k resistors to 2k2 or 3k3.
>
> Ken
>
>
>
K. With the Poly caps that I have available, and considering your
temperature concerns for my CD40106 - I've gone with 0.047uF (47nF) as I
don't have any non-ceramic 0.1uFs with 2200r resistors.
With Frequency = 1/(R*C) that gives me about 206hz to 9600hz of range. That
should be sufficient with my ear's range to get an idea - no?
Working with this - I'll be heading back to changing the resistor /
capacitor values in my Shimmer module in my modular as well - if I did my
math above, correctly. ;)
(1 / (2200r * 0.000000047F) to 1 / (102200r * 0.000000047F))
--
Take care,
Warmth and Peace,
Ryk
http://www.sdiy.org/damian/index.html - my modular synth's homepage :)
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