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NNTP-Posting-Date: Sun, 17 Nov 2002 21:28:06 -0600
From: "David Jones"
Subject: Re: digital SCR exist?
Date: Sun, 17 Nov 2002 22:23:49 -0500
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ok point taken. I didn't even realize I worded it so badly. nor did I notice
some of the terrible typos I made too. but actually I was controlling the
triac using a 9 volt batter or just the parallel port of my computer because
I was just trying to see if I could control something with it. it didn't
work which is why I asked the original question.
"Kevin G. Rhoads" wrote in message
> >you think I some retard thats going to shock myself to death
> >from the parallel port of my computer!
> No, most of the replies were from people worried
> that you may fry yourself from the power source
> you are trying to control with a Triac or SCR being
> run off the parallel port of your computer.
> However much you may know, so far you have *shown*
> no understanding that the low current, nominally 5v
> TTL level out of the parallel port and the (presumably)
> nominally 120v, at least 10A (and probably more like
> 15 to 20A continuous without tripping any breakers,
> with peak current levels prior to breaker trippage being
> MUCH higher) levels available from whatever wall
> socket you are probably tapping into are as different
> as night and day.
> You may understand this, but it sure doesn't seem that
> way from your posts.
> When you *sound* like the guy who asks "what happens
> when I stick the screwdriver into the electrical socket
> while leaning across the kitchen sink" you had better expect
> people to sound off with a "Whoa".
> If you want people to take your questions seriously,
> phrase them so it sounds like you know enough to
> avoid self-electrocution. There are some people
> who just don't know which end of a soldering to
> pick up. If you come across sounding like one, you
> will be treated as one.
> Kevin G. Rhoads, Ph.D. (Linearity is a convenient fiction.)
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