[sdiy] "Living VCOs" PCB in 2009 ?

[Simon Brouwer]

Hi Jürgen,

With "some of that early Moog and EMS character" do you mean its looks or
its sound (besides the tuning/tracking characteristics)?

I think "linear detuning" is a great idea. How about modulating the amount
of it with a slow random signal or LFO to make the VCO even more "alive"?

JH. schreef:
> Hi,
>
> I got several requests for a VCO like I have in my JH-5, something that
> doesn't have the focus on precision but on character, with "linear
> detuning", and some of that early Moog and EMS character (without being a
> clone):
> http://jhaible.heim.at/jh5/jh5.html
>
> The main reason why I hesitated so long was as simple as it was
> embarrassing: I couln't find my design documents - I must have lost them
> in
> moving houses some years ago. The prospect was that'd I'd have to
> reverse-engineer my own prototype if I wanted to offer a PCB for this ...
>
> But some days ago, I found my PSpice simulation files, which show the main
> parts of the VCO and VCO driver circuits in a form that must be very close
> to what I've actually built in the JH-5.
>
> So, suddenly the possibility is there ...
>
> JH.
>
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>


-- 
Vriendelijke groet,

Simon Brouwer
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