full thottle switch

[t.piwonka at ttu.edu (Robert Piwonka)]

Mr. T.

<snip>Nope.
  Substitute 'voltmeter' for ammeter....</snip>

Larry's reply was to this

<snip>You ought to try to remember that whenever you connect an ammeter to
something you are shorting it out!</snip>

now when you read both replies Larry is saying that a voltmeter shorts it.
:)  And if you wanted to use your voltmeter you would short it to ground
since it has very high resistance and flows very little current in an effort
to affect the circuit as little as possible.

Its is clear the only thing that is being used in different contexts here is
'short'.


>
> Second, shorting something does NOT imply connecting it to ground. That is
> a "short circuit to ground".

Well we did not specify any difference in the usage of short in the previous
posts now did we.  Assuming makes an ass of u and me.

> courses the instructors have referred to "shorts" or "short circuits"
> as the direct connection of any two wires (presumably without a load)
> between which there is a voltage potential. +12v and ground are just one
> possibility. If you want to be more exact about it, the name "short"
> comes from the fact that you are running a wire with essentially zero
> resistance in parallel with a circuit, thereby shunting all of the current
> through the wire and bypassing the circuit.


This would be shorting out a certain component of a circuit.  And again we
are referring to 'short' in a a different context.   I was saying short to
ground and you are saying shorting a component.

>In any case, if the input to the injection computer is expecting a
>resistance and it sees none because an ammeter is connected across the
>input terminals, things can (and will) fry inside.

I agree, i see no reason to connect an ammeter across the input terminals of
the injection computer and it would fry assuming one of the terminals was
outputing a current.

> It's scary just how much misinformation people are willing to circulate on
> this list with the conviction that they are right. If you are unsure about
> something it doesn't take much more than saying "I think" to give the
> person who asked the question at least a suggestion to double check what
> you say before they go out and destroy their equipment.
>
> My 2 cents..

> -Toby
>

I dont think anyone gave misinformation just misinterpretation.

Robert Piwonka
> >
> >