As a volunteer I build exhibits for the local Children's museum. I am working on a bike power demo. A DC generator puts out up to about 35 VDC at no load. I think the kids can generate up to about 150 watts so I have an arrangement of 50 watt lamps to show how much power they can generate.
Problem: At low loads they can run up to 35VDC. Voltage drops with higher loads because speed decreases. How can I limit voltage at low speeds so as not to burn out the 12 volt lamp loads?
Thanks
Problem: At low loads they can run up to 35VDC. Voltage drops with higher loads because speed decreases. How can I limit voltage at low speeds so as not to burn out the 12 volt lamp loads?
Thanks