Muller Dynamo

[konehead]

Hi crazycut
Amp draw is so low becasue of the litz-wire "directionally" wound coil, the bidirectional mosfets using drivers doing the swithcing plus the halleffects have their own timing disc, and the rotor magnets do not do the timing against the halleffects - there is timing disc way up on top out of the way of the fields with the halleffects on an adjusable rotating plate.... the small magnets in the timing disc that trip the halleffects are only 1/16th" wide - which is like 1.5mm or so...so pulse widht is narrow but Iwant it to be even narrower eventually to lower draw more...I had this machine down to 60ma last week when I had all generator coils in place and each had backing magnets...the backimng magnet behind generator coils speed up motor too...

[konehead]

Hi Mariusivic
Thats messed up your halls get affected by backing magnets wherever you put them...you should have a seperate timing disc for the halls, or even better some light-triggered timing method they use all the time with a dsc wiht slots cut in it would be ideal really...pulse widht could be adjusted easily by width of the slit in disc...

[crazycut06]

Hi Konehead,
    Ok, thats how you get so low amp draw, we don't have available litz wire here, maybe i'll make  my own, and your pulse width determined by the smaller magnets, you get shorter pulses, im confirming Marius saying the hall sensor are affected when a backing magnet is near, orientation of magnets makes the amp draw high or low. so a separate timing is a must.

[mariuscivic]

Hi guys!

Whille cutting my cores to my new setup i have observed this cool effect with the feritte powder on top of the rotor. It goes in the oposite way of the spinining rotor.
http://www.youtube.com/watch?v=1lB12Va2A4w&feature=youtu.be

[mariuscivic]

Great news guys!
My new setup is allmost finished and ran it quilly just to see how it behavies. I have connected only one set of driving coils:
-free spining 128mA 1140rpm
-free spining with magnets behind the driving coils 80mA 1220rpm. This is a good sign; never had it before