Bicycle generator to phone charger plans?

Discussion in 'Motorola Q Accessories' started by bberryhill0, Aug 25, 2009.

  1. bberryhill0

    bberryhill0 Active Member

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    Bicycle generator to phone charger plans?

    I would like to charge my phone with my bicycle generator. 6vac to 5vdc. I think a wheatstone bridge to a 5 volt regulator might work but don't really know. Too much voltage drop over the bridge?
  2. mike250rs

    mike250rs New Member

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    voltage should be fine, how many amps does it produce?
  3. bberryhill0

    bberryhill0 Active Member

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    It runs a 3 watt headlight so if I remember my math right that would be .5 amps.
  4. mike250rs

    mike250rs New Member

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    it may work.. if not just peddle faster :)
  5. bberryhill0

    bberryhill0 Active Member

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    I should have put this in the hacks forum. Could it really be as simple as 4 diodes and a voltage regulator?
  6. mike250rs

    mike250rs New Member

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    have you ever taken apart a car charger?.. Yeah.. it is pretty simple.
  7. bberryhill0

    bberryhill0 Active Member

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    Car chargers are dc to dc. One chip that pulses the 12v to bring it down to 5v. I need ac to dc.
  8. mike250rs

    mike250rs New Member

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    dooh!...forgot you were generating AC.


    *sits in corner*
  9. Acetherockr

    Acetherockr Member

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    Hahahaha Woooow!
  10. PacoJr67

    PacoJr67 Active Member

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  11. bberryhill0

    bberryhill0 Active Member

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    Searching digikey for 'dc rectifier' finds 120/240ac to 16-52vdc devices but nothing like what I want. I will have to dig deeper after I get home.

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