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NNTP-Posting-Date: Fri, 15 Nov 2002 21:52:50 -0600
From: "David Jones"
Subject: Re: digital SCR exist?
Date: Fri, 15 Nov 2002 22:48:33 -0500
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problem solved. I'm going to use a flip flop chip. basically if the flip
flop chip recieves a +5 volts signal it will output +5 volts continuouslly
until you send a 0 volt(or ground) signal to it. similar to the way an SCR
will conduct electricity even after you remove the gate voltage.
"Boris Mohar" wrote in message
> On Fri, 15 Nov 2002 19:07:13 -0500, "David Jones"
> >I need something that reacts to a the positive pulse of electricity from
> >pin on my parallel port, just like an SCR would to a longer pulse of
> >electricity. I basically need to be able to turn a switch on with a
> >pulse. I tried using a triac but it wouldn't activate because the logic
> >pulse was too weak to do so. any suggestions?
> Before you detonate your port, your computer and yourself, please tell us
> what SCR are you using, what are you connecting to it and how are you
> isolating it from your trigger source. This is not meant to sound mean or
> demeaning but when ever I hear " .. a pulse of electricity to do this or
> that.." certain alarms kick in.
> I have reasons to be concerned because you don't.
> Boris Mohar
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