The Master Of Magnetics "Steven Mark"

[EMdevices]

the phenomenon of electricity and magnetism and fields is so complicated, so many modes of vibration/propagation etc.   Experimentation is the answer.  Thanks for posting that.  I'll have to look into that. 

[motofox]

Hey comster, fine bit of kit you made there, im doing similar but gonna use thicker wire, and want the windings more oval in shape, im just working on a duel trip circuit for safety first !! 
   I guess if lots of us are doing the same concept but slightly different, then we gonna rule out lots of possabilities and narrow it down faster !

Regards

[MeggerMan]

Hi Comster,
Good to see your progress on this device and keep them photos coming.
I can see a few cross-overs between this and the MEG device that DOES have a ferrous core where the SM device does not.
I am currently building the MEG device to the spec that JLN did.
http://jnaudin.free.fr/meg/megv21.htm

Some pictures I posted on this forum here:
http://www.overunity.com/index.php/topic,1565.70.html

I am very interested in how the results of the SM device work out as I suspect the two devices are very closely related.

I agree with Motofox about the coil shape, generally sharp corners are best avoided, but all options needs to tested to see which works best.

On the topic of pulse circuits, Texas Intruments do a whole range of pulse PWM controllers that are made for the job and the newer devices include totem-pole outputs for directly driving a power mosfet.
The UC28025 forÃ,  example has 2 x 1.5A totem-pole outputs that alternate.
You can set the frequency with a pot and cap, and also set the dead time control - pulse duration (I believe, TL598 does but I think its called something else now)Ã, 

Regards

Rob

[hartiberlin]

Hello all,

sorry, Im an old idiot. My moderator couldnt help me, so if you can, please help me to ATTACH pictures. How? Thanks.

Otto

Hi Otto,
thanks for sending the picture.
Here it is attached to this message.

It is very easy to post pictures.

Just press the
"Durchsuchen" button next to Attach formular and
then search the picture on your harddisk and press Okay.
Then when you click the
Post
button it will be uploaded with the message.

Make sure , when it is a JPEG picture, that it is not more than 300 Kbytes
in size, cause this is enough for every JPEG picture...
otherwise store your picture with more compression on your harddisk again
and use this version smaller than 300 Kbytes.


Thanks.

Regards, Stefan.

[c0mster]

I think I might change the coils. Just testing this setup.