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From: "Tarver Engineering"
References: <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <_F1l9.30$VI5.email@example.com> <firstname.lastname@example.org>
Subject: Re: (Avionics) How can this circuit produce an "inductive surge"?
Date: Fri, 27 Sep 2002 15:18:12 -0700
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
"Peter Gottlieb" wrote in message
> Are you talking common mode or normal mode?
> The statement "0.6 to 1.2 volts on the ground above Vcc" is unclear.
I am suggesting that Vcc can be less than ground.
I use a diode in the power input in my avionics designs to eliminate the
problem and facilitate passing RTCA DO-160.
> "Tarver Engineering" wrote in message
> > "Peter Gottlieb" wrote in message
> > news:_F1l9.30$VI5.email@example.com...
> > >
> > > "Tarver Engineering" wrote in message
> > > news:firstname.lastname@example.org...
> > > >
> > > > More problematic is only 0.6 to 1.2 volts on the ground above Vcc
> > > > required to turn electroniscs into smoke.
> > > How would that happen?
> > Chattering relay, voltage induced into the ground path, et al ...
> > Were you under some misconception that induction could only put voltage
> > the positive wires?
> > John
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