RE: Re: Dimming

[Williams Christopher C <CCWILLIAMS@xxxxxxx>]

I am thinking of using some of these.  Have you considered how to
isolate the 1-Wire bus from the mains?  Can you get analogue
opto-couplers?

Chris

> -----Original Message-----
> From:	nicholas@xxxxxxx [SMTP:nicholas@xxxxxxx]
> Sent:	Tuesday, November 07, 2000 5:23 PM
> To:	ukha_d@xxxxxxx
> Subject:	[ukha_d] Re: Dimming
>
> Thanks Stuart - I think I'm going to go for this solution. The Dallas
> digital potentiometer seems to work with a one wire system -
>  'Multiple DS2890 devices can reside on a common 1-Wire network and
> be operated independently of each other'.
>
> Nick
>
>
>
> --- In ukha_d@xxxxxxx, Stuart Grimshaw <stuart@s...> wrote:
> > IIRC, Dallas Semiconductor do a digital potentiometer. Have a
look
> around
> > their website http://www.dalsemi.com
> >
> > On Mon, 06 Nov 2000 20:43:44 Nicholas Bustin wrote:
> > > I find X10 clumsy and unreliable.  I have been able to
utilize a
> triac,
> > > and
> > > a variable resistor plus some other stuff to dim a light,
but
> using a
> > > variable resistor defeats the point... what I need to be
able to
> do is
> > > dim
> > > the light using something like a PIC. I don't know how to do
> this, as at
> > > requires precise timing with the mains frequency, as far as
I
> know. Can
> > > anybody help? Anybody know how X10 dimmer modules work?
> > >
> >
> >                                     ,,,
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