Bedini replication in Germany

[zott]

  I recon my posting on anothers thread  was not as big a problem as I had figured     I will try  to fill some of the holes I left in the thread.

[zott]

 was having troubles getting up to speed without blowing transistors bd243c's . any ideas ?

[Ren]

Rick the best way to set up your machine would be with a single trigger firing all coils at once. You can link up all three triggers in series to do this but one should be enough. Try having a switch for each power winding that way you can test every one and run on lower currents too. The best way to wire up your circuit is to have all connections as short as possible, join the coils directly to the transistors. Ideally you should bunch your transistors next to your coils. Have all output diodes go to a buss bar, it could be circular around your machine, and then THICK cable for minimal losses to the + of the charge battery. Same thing goes for all the negative legs in the circuit. Same size buss bar for all the emmiter connections. There are lots of little tricks that can improve performance, have a look at JB's work on his multi coilers and note the layout.

I think you may be better off moving up to a bigger transistor too..... the bd's will suffice for now.


Rotational wise it needs to be smooth and little friction. A hard drive bearing wont spin for long by hand but it will do incredible speeds. Experiment with a different style bearing if you like.

Keep it up

[zott]

 Thank you kindly  Ren for  the input . I yanked the bearings  and split them open to clean the grease out and put a couple drops of sewing machine oil in them .  they now spin a lot easier  and am looking at cutting back  the length of the coil wires

[Ren]

Yup you're onto it mate! You can use copper strip and also copper pipe for buss bars. It looks like you may have done that already. While I like the circuit boards Albert has sourced/made I have heard varying responses from people who have tried it that way. They do look very professional though!

Yes the switch simply breaks the positive terminal from the power winding. I cant remember exactly  where the page is with the pics, it might look something like this. Ill keep looking.