full thottle switch - how ammeters work

[redrocco at gcj.net (Martin Rodriguez- CJS/ELP)]

As Far as i recall from my basic electric training on my highschool days
you must connect a voltmeter in parallel

and and ampmeter in serial (series?)

http://www.gcj.net/redrocco/volt.htm

By the way my full throttle switch is disconnected since i got my rocco.....
i don't see any wires...
i was thinking if it take long to rewire? does rewiring it will make my
rocco perform better?

cheers
Martin Rodriguez
85 Wolfsburg

----- Original Message -----
From: "Allyn" <amalventano@sc.rr.com>
To: "L F" <rocco16v@netzero.net>; "ATS - Patrick Bureau"
<txrocco@sbcglobal.net>; "T. Reed" <treed2@u.washington.edu>
Cc: <scirocco-l@scirocco.org>
Sent: Sunday, September 21, 2003 8:36 AM
Subject: Re: full thottle switch - how ammeters work


> > By the way, how can a meter NOT receive voltage if it's reading
> amps??????????????  i.e. one > MUST have voltage in order to have amperes.
> Right, Toby?  Allyn?
>
> > Larry
>
> ok, larry, heres how it works. its not that the meter must _receive_
> voltage, its that its only capable of _reading_ voltage. when reading
> amperes the input is ran through a *very* low internal resistance (a
shunt).
> the meter then internally reads the voltage across the shunt, and displays
> it with a current scale instead. the lower the shunt resistance, the more
> accurate the reading (you want the meter to look like the rest of the
> circuit - i.e. straight piece of wire), so the shunt resistance is usually
> very low (0.001 ohms). so, basically, a meter set to read current is
similar
> to running around with a set of jumper cables (well, they cant handle that
> much current, but you get the point).
>
> hth
> Al
>
>
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