Bearded wise man took the week off -- but here's my take on it. <g>
At 02:35 PM 5/28/2002, gary hradek wrote:
>     When the fridge is connected to the 110 volt house
>source, does the fridge motor still draw it's power
>from the battery?

Yes.  All sixy milliamps or so.

>   When the rad fan is on high speed
>does it draw the same amount of amps as when it is on
>a lower speed with the differnce at the lower speed
>being heat from the resistor?

Nope.  The total resistance in the circuit is higher, so less current flows
and less total power is used.  Of this reduced power, some is wasted in the
resistor and the rest goes to drive the fan.  You can get numbers by
measuring a) current in the circuit and b) voltage across resistor vs
voltage across fan.  The power in each is proportional to the ratio of the
two voltages, and the actual power is the product of the voltage across
that component, and the current in the circuit (which by a fundamental law
of circuitry is the same everywhere in this circuit).

d

>   I hope the bearded
>wise man from RI reads this.

--
David Beierl - Providence, RI
  http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"