[sdiy] VCO IC's usage inquiry

[Peter Grenader]

if you use a 555, use the cmos version or it will create mega-noise all over
the damn place.  Last thing you want is hear are your VCOs when you're not
patched into them!

Personally, I don't care for 555 based VCO circuits.  There's a bunch of
issues there for me with them. i think you'd be off with an op amp or
discrete component engine -- you'll be happier with that. But there are many
options for op amps which exceed the performance of the 741 nowadays, and
they are cheap as hell.  A TLO74 is quad (four op amps internally) and will
set you back 30 some-odd cents.  There are also more high end (much more
expensive) op amps as well, but you may find the TLO's are gonna work for
you.

- P



- P


Logan Mitchell Sr wrote:

11/09/2005
I am constructing my own synthesizer and am using the 555 IC Timer chip for
my VCO's. Is it better to use the 555 or something like the 741 or other op
amps for a VCO ?

Logan Mitchell Sr
Baltimore MD USA



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