> -----Original Message-----
> From: Roman Black [SMTP:fastvid@EZY.NET.AU]
> Sent: Tuesday, June 11, 2002 2:13 PM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      Re: [EE] Phase control dimming on a cheap pic
> Yep it might not be a perfect solution but maybe
> bears thinking about. The worst case scenario is when
> bulb is turned on and AC volts are at peak, which
> is quite a sharp waveform. An inductor would make
> quite a bit of difference in that instance, and
> obviously with power surges etc. I just wonder how
> much difference it would make? Sick of changing
> bulbs here as always.
>
> How about this for a whacko idea, rectify lighting
> circuit to DC in the switchboard, then use a PIC
> controlled circuit to only allow current to rise
> at a set (and gentle) delta, so the one simple device
> would work for all bulbs in the house, giving soft
> turn-on for any and all bulbs. You get additional
> bulb life gains from running on DC too. Obviously
> only good for incandescents and limited applications,
> but may have some commercial value for particular
> installations? :o)
> -Roman
>
One downside being that all lamps on the circuit would briefly dim everytime
you switched a light on.

Regards

Mike

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics