Muller Dynamo

[Magneticitist]

oops well @ Stefan the magnets were only on one side, the side facing the run coil. the rotor was the aluminum disc from a HD.
the setup was just a very common HD rotor Bedini type deal.
4 magnets, one coil.
interesting about the LEDs.. maybe.. cant say for sure. looking back into this again though..

but as i said a certain amount of load caused a speed up, even more caused no change, and even more than that like a full load caused a good deal of slow-down..

however i should note i know that in the position that coil was at it had no problem catching the backspikes from the run coil cause it would light LEDs during self oscillation.  that gave me the idea maybe something is going on between the two.. and the fact that one coils resistance and inductance differed so much from the other maybe that explained the very small load i could pull but no more.

but.. yea.. i know more now then i did then and have more stuff to experiment with so im going to get back at it.
maybe with all these people working we can figure it out who knows. theres bound to be one of us that gets it working that can provide a real explanation that makes sense to the point we can be like "ohhhhh"

[neptune]

@magneticist . I seem to remember , 50 years ago that a source feeds maximum current to a load when the resistance [or in AC circuits , impedance] of the load is equal to that of the source .This more or less ties in with what you are saying .

[hartiberlin]

We did it also:

http://www.youtube.com/watch?v=e-yWi3VApbk
we are making adjustments
using light bulb for load and getting closer to regaining full speed of the rotor w/ each adjustment.
this is getting better...

Are you still using the coil shorting, when you have shortcircuited your cap ?
So you still shortcircuit your coil in ONE time spot and the BackEMF pulses are then shorted out via your diode and in front of the cap ?

Maybe you can post a circuit diagram to make it all clearer ?
Many thanks.
Regards, Stefan.

[hadcat]

oops well @ Stefan the magnets were only on one side, the side facing the run coil. the rotor was the aluminum disc from a HD.
the setup was just a very common HD rotor Bedini type deal.
4 magnets, one coil.
interesting about the LEDs.. maybe.. cant say for sure. looking back into this again though..

but as i said a certain amount of load caused a speed up, even more caused no change, and even more than that like a full load caused a good deal of slow-down..

however i should note i know that in the position that coil was at it had no problem catching the backspikes from the run coil cause it would light LEDs during self oscillation.  that gave me the idea maybe something is going on between the two.. and the fact that one coils resistance and inductance differed so much from the other maybe that explained the very small load i could pull but no more.

but.. yea.. i know more now then i did then and have more stuff to experiment with so im going to get back at it.
maybe with all these people working we can figure it out who knows. theres bound to be one of us that gets it working that can provide a real explanation that makes sense to the point we can be like "ohhhhh"

Aluminum disc from a HD?
Maybe the problem is eddy currents from the rotor itself....just a thought.

[4Tesla]

@magneticist . I seem to remember , 50 years ago that a source feeds maximum current to a load when the resistance [or in AC circuits , impedance] of the load is equal to that of the source .This more or less ties in with what you are saying .

So for tuning use a 3ohm 5w resistor for a load?  I don't believe there is any shorting circuit in Romero's build?

Can anyone answer my question about drilling acrylic in my previous post?  Thanks!

I was wondering what to use to drill large holes in acrylic.. would this hole saw work?..
http://www.sears.com/shc/s/p_10153_12605_00966287000P?sid=IDx20070921x00003a&ci_src=14110944&ci_sku=00966287000P

Thanks!

I'm still confused about the difference in a short vs a full load.. can someone help explain this to me?.. Thanks!