Hi Jasen,

 HT>> expect that soon the output will be at the level of 300 volts, and
 HT>> 1 watt of mechanical power or 0.5 watt of electrical power.  The
 HT>> device might not yet be as compact as the best micro-batteries
 HT>> currently available, but it will be able to do what batteries
 HT>> cannot, namely supply power over long periods.

 JB> immagine one of those in a mobile phone...  0.5W is probbly
 JB> not enough power though. :)

Not if the battery is totally dispensed with. That's not ¨efficient
however. A turbine is inefficient when it has to ¨operate over a wide range
of loads. That's one reason they ¨are fine for aircraft but not for cars.

Look at it this way: The battery in my cell phone (Siemens M35i) ¨is 3.6
Volts, 500 mAh. Or 1.8 Wh. That's enough for 3 to 4 days ¨of average
operation. A 500mW generator could charge the battery ¨in less than 4
hours. So 500 mW is plenty for a cell phone.

Not for a laptop though and I suspect they are aiming for ¨that...

Cheers, Michiel

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