Muller Dynamo

[DeepCut]

I'm getting frustrated not being able to get 'The Effect'.

I messaged Thane Heins on youtoob he wrote back this :

"Dear Gary,

A video would be good - however a coil resistance of 19.2 ohms is NOT enough, overunityguide shows 385 ohms or so with an inductance of 2.18 Henries. A 3 k ohm coil is way TOO HIGH and will most likely consume any delayed current in the internal resistance of the coil...

My motor professor in college had a saying which said, "if first you don't succeed - go back and follow the instructions."

Why not make a 385 ohm coil with an inductance of 2 Henries and see what happens?

Cheers
Thane"

Now i have to wait until the right size of wire is in stock that will get (close to) those two values.

I did a spreadshet where you input all your details and it outputs the minimum RPM needed to achieve the effect but i'm not sure how it fits with reality !

http://www.mediafire.com/?o6op61x2elm9ryi

[konehead]

Hi Magluvin

reed swtiches usually will make double-pulse trigger, as the front ege of magnet, then back edge will trip it...(not always - if small mangets, and fast speed, then reed doesnt have time for the double-clicks)

also reed swtiches will sometimes bounce around a bit too...they are nice to use for coil-shorting because their resistance is ultra-low but it doesnt take much in a HV backspike to blow them up.

If you use hall effect, the type that are bipolar will simulate what the reed does better - but you will get better control and shorter pulse width if you use unipolar type hall effects...

when you say your magnets are diametric - does this mean for example they are small hockey puck shape  the "dominate" N-S poles are not on the flat-face, but on the rounded edge facing "sideways" ??

[neptune]

when it comes to discussion of switching methods , there is very little mention of the use of opto methods . Is this perhaps because they are too slow ?

[desa]

@ DeepCut
Ok that is nice info from Thane HeinsI. I guess I could wind it now having many sizes of the wire in my tool box.  What would be dimensions we are looking for regarding size of the coil and wire used to arrive at recommended parameters?
@all
I spent some time looking at the different type of the material for the cores. I came to conclusion that for drive coil I better stick with laminated metal core having the best acceleration and lowest milliamps draw. I know laminates are out than again all the speed ups are happening with metal. Someone correct me if I am in error. Regarding generator coils I settled at most unusual source of the material. Mind you I worked with the ferrite, graphite, laminated cores, magnetite and many more like nickel and copper or more exotic like mining industry byproducts. Material I am referring is deflector cone in older stile TV tubes. After reusing some wire from it I had some lying around. I decided to neatly smash them in powder and recast it in the core size I needed. If used as the generator cores to my surprise output was superior by minimum of 25 to 35%. I would like if someone could try it to confirm my findings. You don’t need to recast it, simply pulverize the cones and put it in the coil with the tape on two side and try. You may be pleasantly surprised.

David.

[desa]

This is so beautiful have a look. Rotating plasma it does tickle imagination doesn’t it..

http://www.youtube.com/watch?v=afQW8FT02DM&NR=1