Cgs synth

Ah, very cool. You saved me some frustration there for sure!

Thanks much Ken!
thom

----Original Message Follows----
From: sasami@...
Reply-To: cgs_synth@yahoogroups.com
To: cgs_synth@yahoogroups.com
Subject: Re: [cgs_synth] psycho and led
Date: Tue, 27 Nov 2001 09:39:01 +1100 (EST)

>Quick question: what max volt range does the Psycho put out?

I doubt it would go over 8 volts. It seems to hover around 6-8 volts with
the range set to max.

>Another question: Will there be any huge difference if I use a 150k
>pot (in a pedal) instead of the 1m speed pot? Should I lower its 18k
>neighbor to 1k (or omit it) to help a little bit? I'm going to use
>switches w/ bigger speed caps anyway, but a big speed range would
>still be nice.

If you keep your ratios right it should be okay. Don't omit the resistor
though, as you will overstress the CMOS chip.

>Any opinions on what I should do for the led driver circuit? I think
>I have it figured out: psycho volt-->trans base; emitter-->2k2--
>>ground; collector-->led (cathode first)-->power. Then I could use
>one to +v and one to -v. Would that work? Anyone like to share
>something clever/easy?

Base connects to pyschoLFO output. Collector goes to +ve rail. Emitter goes
through 470R to LED to ground. LED cathode faces ground. Transistor is NPN
such as BC547 or any other general purpose signal NPN.

_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>



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