Re: AeroElectric-List: ZAP-STOP Alternator Protector 0.1 HTML_FONTCOLOR_RED BODY: HTML font color is red

["Paul Messinger" <paulm@xxxxxxxxxx>]

--> AeroElectric-List message posted by: "Paul Messinger" <paulm@xxxxxxxxxx>

Yes its a simple device, however some of us need specifics as well as just
what the clamping voltage is. Generally speaking electronics designed for
marine use is similar to automotive use that is they are very rugged,
something that many experimental aircraft electronic items are not.

A specific device designed for use in alternator load dump supression is
available and has been for many many years. The problem is its max clamping
voltags is well above what we are looking for to protect all likely
components in an experimental aircraft. Also I assume the 20 amp fuse is
there to cover a load dump case where the internal regulator has not failed
so the alternator current will not be clamped as long as the voltage is
reasonable.

Something designed only to protect the alternator during a load dump is a
sub set of what I am looking into. The above part not counting the CB is
available for under $2 at the on level and around $0.40 at the 100 level.
Perhaps part of the overall solution for us but not a universal solution
even in a non failed case.

Paul


----- Original Message -----
From: "Mark Steitle" <msteitle@xxxxxxxxxxxxxxx>
To: <aeroelectric-list@xxxxxxxxxxxxx>
Subject: AeroElectric-List: ZAP-STOP Alternator Protector 0.1
HTML_FONTCOLOR_RED BODY: HTML font color is red


> --> AeroElectric-List message posted by: Mark Steitle
<msteitle@xxxxxxxxxxxxxxx>
>
> I was searching the web this morning and ran across an item that claims to
> address the voltage spike problem on boats.  When it comes to voltage
> spikes, it seems that boats have the same potential risk as
> airplanes.  I'll be the first to acknowledge that I'm out of my element
> here, but thought that Bob, or someone else, may know something about this
> item.  Here is the quote from their website...
>
> <snip>
> It happens - someone turns the battery switch to "OFF" while the engine is
> still running.
> Even momentarily turning the battery switch to "OFF" can damage the
> alternator diodes leaving you without a way to charge your battery. Either
> the e-Marine Alternator Protector or the Zap-Stop will work to prevent
that
> damage to the diodes. The installation is very simple - just connect the
> red wire with fuse to the alternator positive and the black wire to
> alternator ground. It is cheap insurance.
>
> e-Marine Alternator Protector or ZAP-STOPAlong with the integral 20 amp
> slow-blow fuse, e-Marine Alternator Protector or ZAP-STOP is an ingenious
> device that suppresses high voltage transients by conducting them to
ground
> if they rise to unsafe levels. e-Marine Alternator Protector or ZAP-STOP
> helps protect alternators and electronics from damage when the battery
> switch is momentarily turned "OFF" while the engine is running.
> <snip>
>
> Their URL is http://www.e-marine-inc.com/products/alternators/zapstop.html
>
> Mark S.
>
>


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