STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[lumen]

Hi Ossie,

I wonder what causes , but the small (0.35V) negative going 'bump' between the normal on-off pulses?

Thanks, Gyula

I'm not sure but it could be that there is only one serial winding on the core and not two passes.
This is like a single loop of wire passing the magnet so it generates a small pulse.

[hartiberlin]

This very good page  about magnetic amplifier buildings
could help  here probably:

http://sparkbangbuzz.com/mag-amp/mag-amp.htm

[powercat]

Hello ALL,

Below is the first idea I have been stewing on all day, as I wind toroids.  I am now working on my fourth and last one.  Tomorrow the electronics.  I will use Ossies circuit, seeing it uses the least power thus far.

I have one more CRAZY idea that I am drawing up and will post in a few minutes... It incorporates some of ya'lls ideas in a unique way.

Cheers,

Bruce

Thanks Bruce that answers my question (reply 954)
do you have the same energy saving with one rotor if there were two lines of magnets,
here is your original design with my badly edited one underneath
cat

[Groundloop]

Stefan,

I have posted this before but here it is again.

If you put two Toroids next to each other then you can
switch on or off the power transfer with a third winding
as shown. You can also control the power output in a linear
way with a variable resistance on the center winding.
This will also work for pulsed DC input and output.

Alex.

[samedsoft]

GroundLoop,

  By this way do you eliminate BEMF?

  Have you made any experiments so far ?

  Why do you need resistance in the middle?

  In order to couse delay in the middle current dont you need inductor?