[ausev] AusEV Digest, Vol 37, Issue 8

[Brian Lasseter]

On Tue, Feb 10, 2009 at 12:08 PM, Gil Dawson <Gil at gil.dawson.name> wrote:
> On Feb 10, 2009, at 8:24 A, Brian Lasseter wrote:
>> at that motor's most efficient speed.
>
> Keep in mind that the speed might vary depending upon demand.  In my
> S-10E, for example, the compressor motor is synchronous and driven by
> a variable-frequency power oscillator.  Rather than turn the
> compressor on and off with a thermostat to keep the temperature
> constant, the speed of the compressor is varied with the input of a
> thermocouple to keep the temperature constant.

The Masterflux units have a variable resister as an input for the
cooling capacity of the A/C system.  Hooking up a thermister to this
input and placing the thermister in the passenger cabin would do the
same thing.   It would adjust the speed of the compressor to match the
need.

I personally do not have such a thing hooked up in my car... but it's
a good idea.


Also... I can personally verify that the SIERRA06-0982Y3 units work
well enough down to at least 110VDC.   :-)    (I'm not really sure if
they even have a low voltage cutoff... )


-- 
TTFN,
Brian "Lasso" Lasseter

"No Sane man will dance."   -Cicero (106-43 B.C.)