Date: 22-07-19  Time: 05:05 AM

Author Topic: Free light and heat for winter.  (Read 6933 times)

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Offline Kristan Wifler

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Free light and heat for winter.
« on: 2015-11-30 09:11 PM »

So I saw a TV commercial about a device that produces electricity by using a weight on a rope to wind a generator, which powers a light bulb.
They are using them in Africa, according to the commercial.

I think it would be a simple enough build.
If anyone is interested in taking this project on, I'd be willing to absorb the costs.

I figure we would need a cheap, very compact but sturdy rotary(?) electric generator, with either a light socket, a heating element, or a power outlet attached.
We would also need a special gear box connected to a weight on a rope that would be able to make the unit function all day long, or at least 8 hours. Of course, some supports.
I was thinking the support structure could be a pair of vertical metal bars on either side of the weight, with the generator at the top, and a base at the bottom.
That way it could resemble a regular lamp post.

I've asked a lot of charitable organizations to help in whatever way they can, but so far no luck. I would like to donate a couple of these units to the Lighthouse Mission and maybe some of the other shelters, and if possible, to some people who can't afford their power bills.

Sorry, I barely know anyone by name, so if anyone knows who I should contact about this, please be more specific than just providing a name, or maybe give them my contact info...
Or feel free to offer your expertise!

1) Crank Generator?

Here's one with a 10w 120v output AC power outlet. It's expensive, but would power an LED light bulb easily.
- compact motor/generator set, AC/DC - sounds like a good learning opportunity and not too expensive...
- I don't really know what I'm looking at on the ebay page... is any of it worth it?
 - would it be worth it to build my own generator, and could someone please provide a link to an easy to follow online guide?

2) The gearbox:
I was thinking that someone at the Foundry could whip one up? Maybe?

3) Calculations needed to determine weight and height of device needed to sustain 8 hours of light.
RPM -> amps?   crank speed vs power output ratio

4) Now for the heat and light components...
    I'm pretty sure any household LED light would work fine.
 - I guess we would have to use a different rig to make the heating unit.
tiny heater from best buy

(Foundry membership: July - September)