user TURBO?s replication of Steven Mark?s TPU ?

[giantkiller]

Hello GK,

Just curious to know if you have tried to connect anything to the output of your TPU yet?

God Bless,
Jason O

I did use a 120 light bulb. There are sparks and the scope waves diminish in voltage. But that was too premature. I made a change this morning and the overheating was almost instant. I turned it off and stopped there. I am currently doing doco. so I can continue with the hardware test. I did post about the timing drift and the problems with that.

--giantkiller

[aether22]

starcruiser, it seems you are winding your collector which it's a sausage and then making it into a rod, is that correct?

Giantkiller, how did you make yours? did you wind it as a donut (slow and laborious) or as a normal coil and them bent it into a donut.
ESIT: If so it means I misinterpreted your design, I thought it was 22 turns in series, but it is probably parallel in that case. (though I suppose you could feed it through)

I really would hate to wind over 2400 turns the hard way unnessasarily, I guess it comes down to the question: GK, when you say 22 turns, do you mean in series or parallel?

Please answer, this is quite important.

EDIT: I also want to make 100% sure that each of the 3 rings has only one segmented control coil feed by a single tip41a.
Also i want to clarify, you are driving the tip41a directly with the 555 right? Is there a reason you didn't use a MOSFET?

[starcruiser]

@aether22,

Yes, the collector is comprised of multiple strands of lamp wire (8 x 16AWG copper), I wrap  my control coils on that then I will create a loop using cork spacers. I will then wrap that with tape and then wrap the feedback coil over that (in 4 sections) wrapping the coil going in the same direction as the control coils.

For testing I will start off by using the Tesla generator wiring scheme and connect them using Otto's interconnection diagram. I have a few ideas as to variations but want to check Otto's wiring design and validate it. I will then make the few changes (one at a time) to see what happens. I already have the clocks built with the same drivers as GK (TIP31's). I also have higher power NPN's that are designed for a TV deflection yoke (they have built in diodes and are rated for 800v).

[starcruiser]

I am documenting the build with pictures so I can share the info and all can see how I did it. I believe this will help others that want to build their own.

[giantkiller]

Here is the coils specs and circuit.