[LAD] Milivoltmeter - Was FOSS Ethernet Soundcard

On Wed, 2 Dec 2009 17:19:30 +0000
Folderol <folderol@email-addr-hidden> wrote:

> On Tue, 1 Dec 2009 21:46:32 +0100 (CET)
> karl@email-addr-hidden (Karl Hammar) wrote:
>
> > Folderol:
> > ...
> > > My new millivoltmeter/dB meter is nearly finished - All I need now is
> > > precision resistors 9M, 900k, 90k :?
> > ...
> >
> > Can you publicise it so I can build me one also?
> >
> > Regards,
> > /Karl
>
> It is simple enough, so as soon as I can find the time I'll draw out
> the schematic and post it here as a PDF attachment.

As promised, PDF attached.
I haven't had time to make out any explanatory notes, but I think it's
pretty straight forward anyway

0dB is variable so it can be set to whatever is convenient, hence
temperature drift from using an ordinary diode as a reference is not
important.

-- 
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.

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