Muller Dynamo

[chalamadad]

I've got an interesting scopeshot today. The waveform seems to go back in time and there is a loop there.

[Khwartz]

hi! about replication of Muller's dynamo, how succeed in it, and if someone have done same than RomeoUK or even more?

[konehead]

Hi all

I made a mistake in my drawing I put up mabye month ago of way to recover backemf/recoil from a NPNmosfet motor/drive coil pulsed DC circuit. and so have re-drawn the circuit wtih steering diode in proper place, plus added the two stage output circuit to it too:

[mariuscivic]

Hi konehead!

I went ''back'' at shorting the coil at the peak of the sine.I got  a solid state relay but was very disappointed couse it does not work as i though it would( also paid a lot of money).It works good only in AC
With my stone age components i did short the coil at peak . i used extra energy for this but for now this is not impotant . I got huge spikes when shorting even at 100rpm.  The spikes lights 100 leds at 100rpm. I still get lenz couse i cant control the time that the coil is being shorted.( in my case that is 2mS and is too much).
We need some electronic module that shorts the coil at peak but also with variable time short. I belive that the less time the coil is shorted, the bigger the spike an of course less lenz

[chalamadad]

hey marius, you should try connecting the negative out to the negative in and compare the output...

killed my arduino yesterday, trying to dump many small output caps in parallel back to the battery with a transformer. that didn't happen with just one bigger cap.