[sdiy] Mystery chip - SN15836

[harry]

LOL... like the "Fuzz circuit" in Craig Anderton's "Build a Timbre Gate" from
Popular Electronics (1970 I think). That was my first synth-diy project.

My dad said... "you'll have to remove those back to back diodes, they'll clip
the shit out of the signal"  I said "Good... thats what I want !"

He said "Get the hell out of here you little bastard. I work all-goddam-day
trying to get RID of distortion and here you are trying to MAKE it ???"

Thus ensued a long discussion on the subjects of musical timbre, harmonics...
He insisted that all musical sounds were sine waves and I just had to "go look
at your scope"... to have the proof.

Now I know that perhaps, by Fourier Analysis... he was right in a twisted way...

otoh poppa had what they call a "tin ear".

So anyone gonna clone the RTL chip ???

H^) harry

John L Marshall wrote:

> Be thankful that there are probably no DTL based synthesizers. But if you bo
> back further in time some synth stuff was done with RTL (Resistor Transistor
> Logic) or (Really Troublesome Logic). The uL914 is probably the most famous
> chip in that family. It could be run in linear mode and used as an
> amplifier.
>
> Set the 8xx/9xx aside and go get some CMOS. You will find SynthDIY more
> satisfying.
>
> ----- Original Message -----
> From: <eq927 at freenet.carleton.ca>
> To: Alessandro Zabatta <a.zabatta at libero.it>
> Cc: <synth-diy at dropmix.xs4all.nl>
> Sent: Thursday, September 13, 2001 8:13 PM
> Subject: Re: [sdiy] Mystery chip - SN15836
>
> > Thanks Alessandro and John - your help is much appreciated! Now I know
> > what these chips are, that pdf has lots of info on other DTL chips as
> > well.
> > Best Regards, Mike
> > Any DTL synths out there?