Recent content by goucho

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  1. G

    Electrical help....

    Thanks for all your help in the matter. I am just wondering how you went about getting these numbers... If you could explain (including any equations you used) that would be extremely helpful. I'm just trying to gain a better understanding! Also, how would I know what charging current i would be...
  2. G

    Electrical help....

    If i were to use the three AA NiCd rated at 1200mAh, would i still need to limit my incoming current so as not to "overcharge" the batteries? Also, if my generator produces a voltage range of 4.5v-6v, will that be too much voltage for the 3.6v (3x 1.2v) batteries to handle? or is the incoming...
  3. G

    Electrical help....

    Ok, i've been doing some more thinking about this. I agree with you that the Li-Ion batteries would work better than the NiMH batteries because they will probably never be fully charged. Also, when i was using the 4 AA batteries before it was giving me 2700 mAh. This is impractical for my...
  4. G

    Electrical help....

    Unfotunately, this is the motor I am given to work with... So I have to make due. I plan on using a 6 gear setup from a hand crank to obtain the desired speed of 11350 RPM's. This is a whole nother calculation set, so i'll worry about that later.....
  5. G

    Electrical help....

    Ok, So I think i've narrowed everything down to what I am going to be using. Since the parts have to be order by next tuesday, I am not going to be changing anything (unless it's absolutely vital). I've decided to go with 4 AA MAHA NiMH Rechargable Batteries (2700 mAh). Now, I'm trying to figure...
  6. G

    Electrical help....

    Thank you for your help! I have decided to go with the 1 Watt Luxeon LED due to cost and my application. After doing some calculations I found that it would not be very cost or runtime efficient to use the supercapacitors. I decided to take your advice and use the NiMH rechargable batteries...
  7. G

    Electrical help....

    Re: LED Reflector... ^-- Thanks for your help. After some research I've found a suitable LED. It's a Luxeon LED that comes complete with collimating lens (10 degrees) and aluminum submount. Luxeon White Star/O - Batwing Specs: Max Continuous Current 350 mA Forward Voltage 3.42 Vf Knowing...
  8. G

    Electrical help....

    EDIT: See post number 3 I'm currently designing a human powered LED flashlight. It will be powered by a Mabuchi 4.5v Generator (RC-280RA-2865) (1.36A, 3.47W) https://uwm.courses.wisconsin.edu/d2l/tools/LMS/styles/style1/index.asp?ou=71540&topicId=534837 I'm trying to find a LED Cluster...
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