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From: "Peter Gottlieb"
References: <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com> <_F1l9.30$VI5.firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org>
Subject: Re: (Avionics) How can this circuit produce an "inductive surge"?
X-Newsreader: Microsoft Outlook Express 6.00.2800.1106
Date: Sat, 28 Sep 2002 05:13:25 GMT
NNTP-Posting-Date: Sat, 28 Sep 2002 01:13:25 EDT
"Tarver Engineering" wrote in message
> > You were talking about small reverse transients frying things. But
> > spikes shouldn't get in beyond the power supply, which should certainly
> > protected from them.
> That is a poor assumption to make.
Oh, I thought you were designing the power supply and/or protection. Is
adequate protection still a poor assumption to make? I'm not really sure
where you're coming from here.
> > Which Vcc are you talking about? For the logic/analog chips? Or the
> > supply input?
> Power supply input.
I would think an isolated power supply would give the best protection. This
way it only cares about the input bus voltage and not noise between either +
or - lead and ground. Proper design would survive the environment designed
for (you mentioned some spec), whether this included 600 Volt spikes,
reverse polarity, or whatever.
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