ICL8038

[Lappalainen, Janne]

Hi all,

I have couple of ICL8038s lying around which I would like to use. I have a
schematic for 8038 VCO but it also uses ICL8049 antilog amplifier for CV,
which is no longer available. Are there any other schematics for 8038 VCO? I
couldn't find anything on the net. Unfortunately the list archives seem to
be down at the moment.

Probably I will use them as LFOs. I have the data sheet for the IC. Is there
anything special I should know than to use large enough timing capacitor and
output buffer op-amps? Can the timing capacitor be made by connecting two
electrolytes in series? I don't wan't to invest too much money on this by
buying large ordinary caps.

Btw. the list should really be available in digest format. I have just
signed and the lack of digest mode was quite annoying. I have to monitor my
e-mail constantly and now I get about 20 false alarms per day.

Janne

Listen to my music at:
http://www.mp3.com/MountainCowboy


> -----Original Message-----
> From: Crystal [mailto:gosd at mwaz.com]
> Sent: 25. tammikuuta 2001 2:03
> To: music.maker at gte.net
> Cc: synth-diy at node12b53.a2000.nl
> Subject: Re: ICL8038
> 
> 
> 
> 
> >Are the schematics for your LFOs online?
> 
> 
> ah i knew that was gonna happen. sometimes i think the reason 
> y'all don't
> hear from me often is 'cause on-line i have nothing to show. no, Scott
> they're not, however i could make an effort to get them 
> there. it's a fairly
> simple circuit almost right out of the intersil apps book. 
> that with some
> voltage scaling for the CV. i'm not really recommending this 
> LFO design
> unless you happen to have a few of the chips around, which i 
> did years ago
> when i built these LFOs.
> happy synthing, crystal
>