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Thanks David.
My thought was to make the strap to operate on that voltage rather than the standard strap.
As I understand it the dew heater controller that I have controls the temperature of the strap by controlling the voltage. So if i set it at 10% it still uses 12v but rapidly switches it on and off so it is only actually running 10% of the time. So to my mind (given I have limited knowledge) it usually doesn't need to be going flat stick. I have never run my Kendrick above 50%.
Anyway I note my external DVD burner draws 1.5amp at 5 volts (it is written on the base!) so 1.5 x 5 = 7.5 watts so maybe possible to get that much heat.
Of course that uses one of those double usb leads to get enough power. But I have a 7 port hub and only need 3 ports to run the rig so doubleing up the leads would still allow 2 straps.
Anyway, probably a silly idea that has already been floated and shot down before.
Malcolm
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