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The spectral density is always going to be symmetric about zero because a negative and positive frequency are the same thing. Usually you only look at the right side of the plot.
what are you driving the motor with? a battery? if so I'd stack a couple in parallel to get some more current.
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You should only do that if it's not the end of the world if you fry the motor though... you should never guess at voltages
That is a wonderful idea. Sometimes when I attack a project I have a tendency to try to reinvent the wheel instead of just using readily available rebuilt components. thanks john.
I should have posted some more details in the original post I'm sorry. I have a large capacitor on the output (~5mF) I knew that usb voltages had to be very steady. Second the 350 I mentioned in the post came from a multimeter first, and then was verified by an app that I downloaded which showed...
Hi,
I am working on a project to charge my cell phone while I am riding my bike. I have a small bike dynamo that outputs 15 vac at about 6w (obviously very dependent on speed). This is fed into a full bridge rectifier (4-diodes), then through a shunt capacitor to smooth the voltage. this is...
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