How do you determine the voltage of the generator?

I m suppose to produce electricity by doing a bicycle generator but i m not sure what voltage generator should i use and why.
Anyone can help me?

 

The voltage will depend on the flux and amount of coils if you want to look at it from a mathematical perspective. If you want to look at it on the quantitative side, in an ideal situation, a 24V motor can produce 24V while being turned at the RPM it would normally spin at when attached to a 24V power source. This is for DC motors of course, you could also look into Stepper motors.

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Mike
My website: www.ElectroBird.net

 

Spin the motor shaft... measure the voltage produced under load....

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meaning, if i were to use the dc motor to charge a 12V battery, i just have to use a 12V generator?

 

That topic has been covered on the forums multiple times and the information is easily searchable on Google.

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It would be a bit more complicated than your simplification. You would need to maintain over 13.8V to charge a lead acid battery. 12V would essential be its peak voltage. If it were up to me I'd use a 24V motor with a 12V lead acid battery, and would gear the motor to ouput ~14.5-15V.

What is going to be turning the motor?

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Mike
My website: www.ElectroBird.net

 

a bicycle which is used to turn the generator and it is connected to a charge controller then to a 12volt lead acid battery

 

alternatively, the generator is also connected to a series of LED and 7-segment to show the amount of voltage produce by the user. it is programmed by virtual instrument, some sort of interactive games to show students who is able to produce more voltage

 

Man, that got compicated in a hurry.

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You don't need a quadraphonic Blaupunkt -- you need a curve
ball.

 

sorry. i m not good explaining in my english this is the flow chart

 

Sounds awesome! Ive been wanting to do something like this But haven't had the money for an inverter or the batteries or the bicycle to mod XD.

I'll gladly try to figure this out with you along the way

Do you have any microcontroller experience? Any electrical experience?

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Mike
My website: www.ElectroBird.net

 

i m from currently studying electrical engineering
i have learnt micro controller but still figuring out how do it really works

 

Ok, which family of uC's?

P.s. where are you from?

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Mike
My website: www.ElectroBird.net

 

Most probably 8051

I m from Singapore.

 

hey.. If i use a 28Ah battery, how do i determine the rating of the charge controller?
And if so, would a 24V,8A,1800rpm generator be appropiate