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12 v Bicycle Generator and the Blocking Diode

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by T.J. Johnson BSN, Aug 16, 2017.

?

either: 8 amp; 10 amp; 12 amp

Poll closed Sep 16, 2017.
  1. eight, ten or twelve

    0 vote(s)
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  2. 8 or 10

    0 vote(s)
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  3. 12

    0 vote(s)
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Multiple votes are allowed.
  1. T.J. Johnson BSN

    T.J. Johnson BSN New Member

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    Building B.G. and need to know what amp the Blocking Diode should be? I saw this guy riding it normally with the usual push-pull action which propels the back wheel, His friend said it (the Diode) was getting VERY hot. Conclusions??
     
    Last edited: Aug 16, 2017
  2. dr pepper

    dr pepper Well-Known Member

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    I have a shimano hub dynamo, its 6v at 3w which is 0.5a, mine uses a bridge rather than a single diode, its rated at 50v 1a.
    A single diode for that would be a 1n4001.
    The fact you mention a 10a diode means one of us has the wrong idea.
     
  3. Colin

    Colin Member

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    What do you want a B.D. on B.G. for?
     
  4. dave

    Dave New Member

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  5. T.J. Johnson BSN

    T.J. Johnson BSN New Member

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    ...Energy Production into a 12V , from a a bike thru a serpentine belt to a motor (probably fridge motor) into a 12V Deep-Cycle lead-acid battery.
     
  6. T.J. Johnson BSN

    T.J. Johnson BSN New Member

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    ...OR, how any amps could a stationary bike produce, considering one has the right hook-up, ex. voltmeter; motor (approx. 1hp.); rectifier diode (blocking?); ect.
     
  7. alec_t

    alec_t Well-Known Member Most Helpful Member

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    According to Wikipedia, "adults of good average fitness average between 50 and 150 watts for an hour of vigorous exercise" (~0.06HP to 0.2HP) .
    For charging a 12V lead-acid battery you'd need to generate around 15V. So current would be in the 3A to 10A range, subject to the maximum safe charging current of the battery.
     
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  8. dr pepper

    dr pepper Well-Known Member

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    Goig off alec 0.2 hp is about 12 amps at 12v.
     
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  9. alec_t

    alec_t Well-Known Member Most Helpful Member

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    ..... but 12V isn't enough to charge a 12V battery.
     
  10. dr pepper

    dr pepper Well-Known Member

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    Approx guide.
     

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