Resitance under load
Posted: Thu Aug 30, 2007 1:30 pm
hi,
I builded the same turbine as per your instructions, i was thinking to buy
yours but then only for 2 days i made the same replica as yours and its
working ok.. i get the same maximum voltage of 58 volts.
but it appears that the power i use to rotate it is not enough and when
there is no electriacal load the turbine rotates at 250-300rpm easily and
the voltmeter shows 40-58 volts easily.
The problem is when i put for example 5 wats/12v bulb then the whole system
stops and its VERY VERY VERY hard to rotate the rotor anymore, and then the
voltage drops to 6-7 volts and the bulb works but the rotor is very veyr
hard to rotate? is this normal? do you experience the same ? Do you tihnk i
have made something wrong? is it normal that the rotor gets more resistance
as more load is added?
If you can answer this questions you will help me a lot.
I builded the same turbine as per your instructions, i was thinking to buy
yours but then only for 2 days i made the same replica as yours and its
working ok.. i get the same maximum voltage of 58 volts.
but it appears that the power i use to rotate it is not enough and when
there is no electriacal load the turbine rotates at 250-300rpm easily and
the voltmeter shows 40-58 volts easily.
The problem is when i put for example 5 wats/12v bulb then the whole system
stops and its VERY VERY VERY hard to rotate the rotor anymore, and then the
voltage drops to 6-7 volts and the bulb works but the rotor is very veyr
hard to rotate? is this normal? do you experience the same ? Do you tihnk i
have made something wrong? is it normal that the rotor gets more resistance
as more load is added?
If you can answer this questions you will help me a lot.