Yahoo Groups archive

MOTM

Index last updated: 2026-04-03 22:10 UTC

Thread

"Living VCOs" PCB in 2009 ?

"Living VCOs" PCB in 2009 ?

2008-12-07 by JH.

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.