> > =A0This works well, provided that your supply can tolerate the high
> > current/no current approximation to a constant value resistor.
> > I used this for an exercise cycle load with dissipation varying
> > between 0 - 500 Watts depending on load and speed.

> I'd break that bicycle. I think I sustained a kilowatt of power output at
> one point for a short time with my legs.

No.
Getting more than 500 Watts out of it was a challenge.
Given enough speed you could do so as it asymptoted to about constant
torque, but I think 1000 Watts was probably beyond it.

I could do 500 Watts plus for maybe 10 seconds, after which I and my
legs turn to Jelly and I can't do anything much for a while.
100 Watts continuously is annoyingly heavy but doable.
50 Watts a really fit person can do all day.
To fly the English Channel (Gossamer Condor / Albatross) you need to
produce a horsepower plus continuously.

The annoying ones were the kids who set the load to zero and then
pedalled at astoundingly high speeds. Thgis would push the bus voltage
over the ;level sustainable by my load FET. I added software to load
the system down if people truied this. It worked.


                       R

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