Geoff,

That all makes sense, but what is the explanation for *shutting down* the
engine and seeing a similar in amplitude spike occur at that very instant?
 At that point, the starter is not involved.
It appears to point to the alternator field collapsing on shutdown. BTW, the
start-up spike and the shut-down spike's have opposite polarities.


On Fri, Jan 7, 2011 at 7:38 AM, Geoffrey  wrote:

> When you first start an AUTO like 50 or more amps
> might flow through the starter motor creating a large
> circuit for an electro magnet ??
>
Geoff,
=A0
That all makes sense, but what is the explanation for shut=
ting down the engine and seeing a similar=A0in amplitude=A0sp=
ike occur at that very instant? =A0At that point, the starter is not involv=
ed.

It appears to point to the alternator field collapsing on shutdown. BT=
W, the start-up spike and the shut-down spike's have opposite polaritie=
s.
=A0
=A0
On Fri, Jan 7, 2011 at 7:38 AM, Geoffrey <gmvoeth@...........> wrote:

When you first start an AUTO lik=
e 50 or more amps
might flow through the starter motor creating a large<=
br>
circuit for an electro magnet ??