Place a cylinder shaped neonib at the top and try to roll it down the aluminum surface. One that a round cylinder (like a neonib) won't fall off of when it rolls on it. something at least a couple of feet long. : Re: Re: Re: Re: linear generator - what am I doing wrong - Gabboīefore you get away there is something I want you to do.įind a piece of aluminum plate, bar, extrusion, angle. Re: Re: Re: Re: Re: linear generator - what am I doing wrong Problem is this is the easy part of what I am trying to do. And a scope to see if what I have now is doing anything (which might be enough for a concept model (smile). A single spin of the shaft will light up a 3v jumbo LED. The bike light uses steel fingers that wrap around the round magnet (which is magnatized (is that right?) in a n/s around the cylinder) It looks like it directs the flux to the bobbin which is sitting perpendicular to the spinning mag. I see where you are going on this (and my hand is cramping thinking of the winding of more wire). Yes, caps to store the resultant energy after being rectified. : Re: Re: Re: linear generator - what am I doing wrong - randykimball Re: Re: Re: Re: linear generator - what am I doing wrong Modified by randykimball at Tue, Sep 19, 2006, 20:24:39 You've seen the flash lights that work this way? They do exactly what you are doing and store the energy into caps and light a bright LED. Lots of neonibs (they have hords of mag-flux) and lots of turns of wire. The more wires the more flux lines cross-up in motion the more current. you, to get similar results, need many more wires to make up for many RPMS. Your bike gen set turns many RPMs so thus gets lots of magnetic flux lines crossing the wires in a hurry. : Re: Re: linear generator - what am I doing wrong - Gabbo Re: Re: Re: linear generator - what am I doing wrong They apparently generate enough juice to keep onboard batteries topped up for running nav lights and or radio beacons. The concept is used as a wave generator for bouys that bob up and down in the water. ![]() The idea is to have something that looks like a shock absorber (but not work like one). The magnets by the way are neodymium and I must admit pack a big whollop to uncareful fingers. I was hoping to see some measureable value (at least as much as the darn bike generator I am using for inspiration) but I seem to be getting nowhere. There are 8 bobbins, 4 in one phase and 4 in the other. The bobbins are wound 120 turns with 18 awg wire. In my application, the magnets on the shaft move up to 20 cm (there are 16 arranged with pole caps in an cNSNScSNSNcNSNSc and so on. I think that what I am getting is doing at least that (although I dont have a scope to prove this). I would assume then that your sensor is moving in a very minute manner to which the voltage is being seen via the computer interface. : Re: linear generator - what am I doing wrong - randykimballĪlright, your page was very informative and musical. Re: Re: linear generator - what am I doing wrong Modified by randykimball at Tue, Sep 19, 2006, 20:02:25 The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them. There you can see how you need to place the bobbins in respect to the magnets in a picture on down the page. ![]() If you go to my web page you will see my home made Lehman seismic sensors using this method.Ĭlick the Seismic stuff button. Then the current is multiplied thousands of times and is recorded on my computer as a graph. I let the earth's motion (seismic vibration cycles) move the pair of neonibs adjcent to one side of the 16,000 turn bobbin which is suspended from a Lehman pendulum arm. This is exactly how my seismic sensors work, I have a pair of 3/4" diameter neonibs facing each other in phase. Then you are only going to get a very small current. ![]() I would use neonib (slang for Neodymium) magnets and you need many-many turns of wire. ![]() Place a cheap compass (you know the ones about 1/2" in diameter that come in toys) over a thin wire that is connected to both extreme ends of your bobbins, and a good ways from the magnets.Īs you move the bar the compass needle should be effected. Here is a hoot of a way to prove if it is working. you want the magnets to pass magnetic flux through the wires on one side of the bobbins. Don't move the magnets inside the bobbins.
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