Muller Dynamo

Cherryman · May 14, 2011, 05:32:29 PM

Quote from: CLaNZeR on May 14, 2011, 05:29:50 PM
Hi Cherryman

Yep and later then he corrected himself saying:

************
Hi,
I have measured the rotor and it is 20cm, sorry. I had so many changes and I also had a 25cm and a
35 cm rotor in another setup.
************

I spent about 4 hours today reading every post in this thread, before I started to draw up, so hope it is right

Cheers

Sean.

Oops, now am I sorry

Happy building.

CLaNZeR · May 14, 2011, 05:32:45 PM

Quote from: Staffman on May 14, 2011, 05:27:36 PM
@ Clanzer

I think he said it was close to 2 Ohms (between 1.5 and 2), although I can't find the post. If I remember correctly, he said that each coil was different because they were hand wound with twisted litz. His wire (7 x 0.125) would be closer to 0.375 diameter if you bunch the 7 wires together....

Hi Staffman

I have ordered the stuff Romero quoted

7 X 0.125MM SOLDERABLE STRAND EN.Cu = 0.875mm
Ref: ST01250007-500

So he does seem to state it is 0.875mm overall.

Thanks mate

Cheers

Sean.

CLaNZeR · May 14, 2011, 05:35:08 PM

Quote from: Cherryman on May 14, 2011, 05:32:29 PM
Oops, now am I sorry

Happy building.

hehehe never be sorry, good to have a sanity check in all areas, so appreciatted mate

Cheers

Sean.

erikbuch · May 14, 2011, 05:37:36 PM

Here is the post from R.
Quote:
Hi all,
i see that many questions are about the resistance of the coil.
I don't have the generator at home but as I remember I maeasured it few day ago it was arround 1.7-2 ohms.I have removed one of the pair coils and replaced with a larger one and that has improved the system.

Best Regards
Erik

CLaNZeR · May 14, 2011, 05:44:44 PM

Quote from: erikbuch on May 14, 2011, 05:37:36 PM
Here is the post from R.
Quote:
Hi all,
i see that many questions are about the resistance of the coil.
I don't have the generator at home but as I remember I maeasured it few day ago it was arround 1.7-2 ohms.I have removed one of the pair coils and replaced with a larger one and that has improved the system.

Cool , thanks Erik

Be good to compare the first coil and see how close we are.

So if running 2 coils at say 2 ohms each in series and 12 volt supply we would be pulling 3amps or 36 watts if fully turned on, but we are pulsing so the RMS would be lower.

I understand we are pulsing two sets at different stages, so be interesting to see the power pulled on the scope when it is up and running.

Cheers

Sean.