temp gauge internals

[Huw Powell]

Konstantin Bogach wrote:
> 
> Hi listers.
> 
> I decided to forward back to the list the message I sent ealier under
> different subject because I suspect that many people found that thread
> not interesting and could just skip it.
> 
> The reason I do that is I realy very curious how the gauge works. I
> would appreciate if someone comment on it.

if it's liek the ones I am familiar with it is very simple.  there is a
voltage regulator to runt he coolant temp and fuel gauges, it produces
10v so these two gauges don't fluctuate with electricla load.

the 10v flows through a coil in a magnetic field attached to the needle
(D'Arsonval movement?), thru the wiring, and then thru the "sender",
which is a variale resistance type device and is grounded, which is
where the current winds up.  needle defelection varies proportionatley
with sender resistance.

-- 
Huw Powell

http://www.humanspeakers.com/audi/

http://www.humanthoughts.org/