Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Simple circuit help please

  1. Oct 30, 2008 #1
    OK, New to this site. here is my task at hand.

    I am trying to make a votage regulator and Rectifier for my scooter to charge the battery while driving it.

    I have about 70 VAC coming from my stator (not really sure what the amp out is). I have made a bridge rectifier using (4) diodes. I put a 10K ohm resistor across the bridge as well as a 100 Volt 500 mf capacitor on the out side of the rectifier.

    I then am using a 5 watt 13.6 Zener diode to drop it to 13.6 VDC. On the bench (plugging it into 120VAC) this works great and I get 13.6 volts DC out of the circuit. But not even enough juice to light a 12 VDC light bulb. I'm trying to charge my battery with this circuit, but have very little current.

    What am I missing?? Any help or a circuit drawing would be much appreciated.

    Thanks much
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted