Thanks for the info, that's a good idea!

I saw that there are several types of resin: polyester, epoxy, polyurethane, vinyl ester, gel-coat ...: shock: it goes from the composition for the soft to the rigid, which will be the best choice: ?: Those who tinker with alternators take industrial talk as a charge for the resin, but that's more ...

Yes, alternators are not bad among Americans, it takes less work to build a wind turbine! The metal coil cores as you say, it is good against parasites, but is it more designed against heating:?: Because I see in the photo that it protrudes on the outside of ...

Hello, I come back to the subject: cheesy: so I bought a used oscilloscope which is to fully calibrate MDR but I will do with it, because it is just to see the shape of the signal ... I have magnets , which hurt my finger MDR a super tweak, always takes an accident to understand c ...

OK well received !

I come back to the first calculation giving the number of turns: "The number of turns which fixes the tension is for these dimensions of 1,5cm by (5-3) / 2 = 1,5cm" I understand that it is 1,5, 5 (3-2) / 3 but how do you get 2? Knowing that the inside diameter is 5cm and the outside is XNUMXcm, the ...

Thanks Dedeleco, I will read all of this, I hope to understand your result on the coercive demagnetization excitement. Ah hi hack! the size of the magnets, I think between 2 and 4cm in diameter but not exceeding 20kg of force because I am afraid for my fingers LOL thank you Dedeleco for the setting ...

: cheesy: good for the arrangement of the elements of the alternator I got it. Do you know how to tell if the cross section of the wire is too large for the flux density of the magnet? The magnets that interests me are 0,7 T large maxi in N45 Dedeleco you told me about hysteresis, demagnetization ...

No problem I will put pictures: cheesy: on the forum of the alternator ... Ah yes, from what you showed me the coefficient is actually lower, that will be my big problem since the alternator will require torque! I will put a low voltage regulator since I want to do 48v. For ...

Why did I choose vertical axis? This is because I do not want the wind turbine to have long blades, but if the yield is too low, I will choose horizontal axis. : cheesy: no I don't think I will exceed the laws of physics !, but the perendev can do it since the magnets c of the en ...