Muller Dynamo

[nul-points]

Here are the actual scope shots of the single coil pair voltage and current, with and without a load.  You can see an almost perfectly flat zero current trace with no load.  With the load the current is only drawn when the coil o/p can exceed the FWBR voltage drop + voltage in the dump cap.

The load is greater than the o/p can handle so it also greatly distorts the voltage trace.

Thanks,

M.

thanks Mondrasek - nice thorough work!

we can see now that Romero's trace was taken on load - and also that his load wasn't maxing the coil o/p!

this shows exactly why there is a sharp transition near TDC (and also visible now just before the inter-magnet gap) - the FWBR stops conducting at this point as the cap voltage fills to equal the i/p voltage from the coil

it's also possible to see the coil-collapse spike & slight ringing at this same point for each of the two current 'half-cycle' pulses

thanks
np

http://docsfreelunch.blogspot.com

[altair]

Wattsup, I never thought I would ever thank you for something, but now you really deserve it, with
your quote: "I will not post here anymore." 

This is a great news !
Bye-Bye !

[plengo]

Here are the actual scope shots of the single coil pair voltage and current, with and without a load.  You can see an almost perfectly flat zero current trace with no load.  With the load the current is only drawn when the coil o/p can exceed the FWBR voltage drop + voltage in the dump cap.

The load is greater than the o/p can handle so it also greatly distorts the voltage trace.

Thanks,

M.

Excellent work mondrasek.

I can attest to your scope shot because tonight I just did the same experiment and the wave shape was exactly the same under load according to your description. FWBR + buffer cap (no bias caps) and load.

The balancing act of those coils, magnets and distance is a work for a long time.

Fausto.

[plengo]

I am re-studying Romero self-runner video (again ) and I noticed that when he changes the voltage of the DC-to-DC from 12 to 9 volts the speed of the motor actually accelerates slightly.

Fausto.

[lanenal]

Looks like someone made it but we need the details of course....

http://www.youtube.com/watch?v=GH-1rjKbdEM&feature=feedu

@darkwanderer: Do you mean that Romero's device has already been successfully replicated by someone? (Sorry I don't have access to youtube in my country).