[sdiy] SN76477 CV Jacks

Prototek prototek at optonline.net
Sat Sep 6 12:35:51 CEST 2003


    OK. So I've finally bread boarded some extremely basic circuits for the
SN76477 (i.e. Forrest Mims Laser Zaps, etc...). Eventually I'm looking to do
a much more complex module that has CV on a couple different parameters.
    Here's my question.... With the 76477 chip can I just wire a CV jack to
the LFO or VCO pins or do I need to have a CV buffer circuit before it? The
old literature I have is a bit sketchy and sometimes it appears that all I
would need to do is run a jack to the respective pin. I may be totally off
base with this so I need you guys to give me the scoop.

                    Thanks,
                    John



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