Food processor
Del Cecchi wrote:
> "Bill" > wrote in message
> ...
> > In article >,
> > Andy Boze > wrote:
> >> Wattage is largely a marketing gimmick. The true power of an appliance
> >> would be rated in horsepower. Unfortunately, manufacturers rarely
> >> provide this information.
> >
> > Sure they do, since Watts is directly converted to horsepower: 749
> > Watts is 1 horsepower. In the case of a food processor, you'll only have the
> > few % losses in the gearbox to derate it from the advertised wattage to
> > useful work. Given the supply voltage, the current drawn, and the power
> > factor or the load you can work out how much energy is going into that
> > appliance to be converted to useful work.
> >
> > Maybe you mean torque (foot pounds or Newton metres) as the important
> > non-provided information. A graph of torque vs speed may be useful to
> > work out where your appliance does its most efficient work, or if it
> > even suitable for some tasks.
> >
> > Bill
>
> Ah grasshopper. If the wire in the windings is small and cheap, you can
> suck a lot of watts that get converted into heat and not output from the
> motor.
So design matters?
>And if there isn't much steel in the motor, again to save money,
> it might saturate and let the current shoot up and not do much useful
> work. Ever wonder why an immersion blender might say to only run for a
> minute continuous? Or why kitchen aid mixers don't want to be run too
> long continuously? How many of the "600 watts" of my new pro 600 go into
> making the motor and case hot? Gets pretty warm in about 10 min. What
> is the specific heat of a kitchen aid mixer?
>
> del
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