Wein Bridge?
Ron
ra.ah at RCN.COM
Tue Jun 10 13:04:48 EDT 2003
Jack Crenshaw wrote:
>
> I was under the impression that low distortion was the circuit's main
> feature.
You were right.
-- Ron
>
> Jack
>
> Neil Morrison wrote:
> >
> > Did you want to build one of these? Most people usually go for a low
> > distortion circuit, and the Wein isn't optimum for that IIRC.
> >
> > Neil
> >
> > ----- Original Message -----
> > From: "Jack Crenshaw" <jcrens at EARTHLINK.NET>
> >
> > > I just have a question out of curiosity. I recall, back in the
> > 50's,
> > > hearing a lot about the Wein bridge oscillator. Supposedly, it was
> > the
> > > best way to build an audio oscillator -- gave a naturally low
> > > distortion. I recall that it used a light bulb in the bridge
> > circuit, as
> > > a temperature-dependent resistance to control amplitude.
> > >
> > > It seems to me that one of the Heathkit oscillators used the Wein
> > > bridge. I vaguely remember reading articles about it, and seeing
> > the
> > > schematic in various magazines. However, none of the oscillators
> > I've
> > > seen, including the excellent AG-9A and AG-10, seem to use it. As
> > I
> > > recall, the AG-9A uses a split-T oscillator.
> > >
> > > Anyone here recall more about which model used the circuit?
>
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