[sdiy] ASM-1 VCO improvements

[Magnus Danielson]

From: "Samppa Tolvanen" <samppa.tolvanen at gmail.com>
Subject: [sdiy] ASM-1 VCO improvements
Date: Sun, 14 May 2006 21:17:56 +0300
Message-ID: <fa1b0bd80605141117h1bace5a3u2b2c9c90717b70e3 at mail.gmail.com>

> Hi.
> 
> I haven't seen any offcial list for improvements. I'm not looking for
> another waveforms.. but simple things to make it more stabile and
> such.
> 
> I've already implemented +/-10V references for tuning pots and initial
> tuning trimmer, reference derived to expo reference and reference
> derived voltage for comparator..
> 
> Anything else?

One improvement is the addition of a trim-pot for the reference current into
the expo-pair. That converts the trimming to a three-step process rather than
an interative process.

That made it into the SAS-VCO as well as the ASM-2 variant of the VCO.

Cheers,
Magnus