[sdiy] New Thomas Henry VCO-1 Page Up

[Magnus Danielson]

From: Ian Fritz <ijfritz at comcast.net>
Subject: Re: [sdiy] New Thomas Henry VCO-1 Page Up
Date: Sun, 27 May 2007 12:46:59 -0600
Message-ID: <6.2.1.2.2.20070527113838.02146dd0 at mail.comcast.net>

> Hi listers --

Hi Ian,

> Hmmm ... This is the old, old EN #46 design (from 1974) tricked up with a 
> bit of lipstick. A somewhat odd mixture of old and new ideas.  I built the 
> original when it was first published and have made a number of 
> modifications since.  The first set of these may be seen in EN # 112 (1980).

If this is the same basic oscilator as in the ASM-1, then I've done a few
modifications of my own. One such is the addition of a trimmer on the expo-pair
reference current generator. This allows one to make a more straight forward.

This modification made it into the SAS-VCO and later the ASM-2.

Cheers,
Magnus