All this triac talk has got me thinking that I am going to need to perform some experiments myself.? I've created a few magnetic drivers with MOSFETs, so I know how difficult inductors can be to drive, but I do not know how you got your red current waveform.? I'm going to have to look at my scope for myself at the current/voltage relationship.? If you're trying to charge a cap or an inductor, you would see a phase shift, but it doesn't make any sense that you would get a clean sinewave current waveform when you're only taking part of the voltage waveform.
?
Are you looking at an oscilloscope output?? What is your test jig setup like?
?
Curious,
Scotty
?
?
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----- Original Message -----
Sent: 4/18/2004 3:22:01 PM
Subject: Re: [Electronics_101] Re: Triac instead of relay ?
look at my attachment please.
i also can not believe there is reactive power but how is the phase shift
explained otherwise?
thanks
st
On Thu, 2 Jan 1997 18:52:49 -0600, Curtis Sakima wrote:
> I think we could be getting into a semantic war with this thing.? So ....
> instead of my talking anymore ... please ... everyone open up the *.bmp
> attachment of this email.? THIS .... is what I saw on the scope output of
> the triac dimmer.? The arrows indicate what moves as I dim the lamps up
> and
> down.?? The overall wave doesn't shift ... but that vertical line
> (indicated
> by the arrows) ... shifts left and right.
>
> As the area under the curve varies ... so does the intensity of the
> lamps.
> I thought a picture might settle this.
>
> Curtis
