Hey Bolt

good stuff..  i suspected that what we are calculating may not be. You are the man.  ;] 

What do you think about the difficulties in people getting it going?  is it that they are not multifilar coils? Would you recommend all 7 strands in series?

thanks Bolt  Yer doin a good job here. ;]

Magsleeps finally

Mags,  Yep if I ever get mine built that will be a good first test to see the output without cap.  And as usual bolt has some good explanations of why this will work and why I knew better than to try the math conventionally.   Now you are barred from posting for at least 8 hours.    

Quote from: Magluvin on June 30, 2011, 01:42:04 AM

What do you think about the difficulties in people getting it going?  is it that they are not multifilar coils? Would you recommend all 7 strands in series?

Tuning is critical because the tuning in bifilar set-up is then all in the core inductance versus cap tuning of conventional coil. Need to be balanced so that its a perfect null on the air gap and back end magnet needs tiny tweaks.  I already suggested 3 pairs from 7 wire litz  first pair will produce around 4v the next pair will double it to 8v and double again to 16v should be relatively easy. ONLY MEASURE THE POWER AT THE DUMP CAP NOT THE COILS. This must be done by calculating the final load then dividing out the number of coils to find the correct test load resistor. If the final load is too far different from design then chances are it wont work.

Quote
Let's talk "strands"....(litz)  Funny, how I mentioned this over 200 pages ago (and in the last few pages of my thread) and it has come up again. 

Penno and all, how many turns did Romero say he had on his bobbin?  Over 300 turns.  Everyone's comment was, "he is mistaken, that many turns can't fit!"  Wrong!  As I explained in my thread, before Romero ever had his device working, as I explored the statement's of Steven Mark, about parallel wires, you can take litz wires and wire them in series or parallel.  The "potential" (total wattage) will not change, but wired in series you end up with MUCH HIGHER VOLTAGE.  And I think a few of you were wondering "how" Romero achieved this.

In the experiments presented by Slider (yes, I have been reading while on my journeys...) and spoken of by Penno, what they are calling a "bifilar" wound, is what I call "series" wound.  Some are in parallel but some are in series.  Let's assume that your 7 strands gives you just over 100 turns on your bobbin.  Now, let's say you connect the wires, 123 ends to start of 4567, you now have 200 turns and have doubled your inductance (air core, then adding inductance of ferrite core)but raised your resistance.  Inductance trumps resistance for wanting higher voltage.  Now, let's go with Romero's winding, of say 300 turns, then to achieve that, please do the following, and you too will end up with MUCH higher voltage (lower current.  Current causes LENZ, NOT voltage).

Bruce

Bruce, it one thing to formulate ideas and inspiring concepts and another thing just mixing  standard workings things and giving imaginary directions (help me understand if i do not).

First of all, i have not being unable to wind 300 turns of 0.125x7 litz wire Romero has suggested to those sewing bobbins. Actually with the help of a battery drill and a screw ala clanzer (thanks for that tip) is a piece of cake. (other did that also)

Secondly, the "going for voltage and not amperage is not that valid there". What creates the opposing Lenz is not current alone, but the amp x turns.
So by cutting current to half (by using biffilar series connected) you will end up with double voltage, half current but same amp x turns and lenz effect for same power draw from pickup coils.

am i missing something?

@bolt & baroutologos :
Say we have 2 coils, coilA wound with litz normally and coilB wound bifilar with the wire mod (123 to 4567 in series)
If coilA outputs 5v at 1amp = 5w
and coilB outputs 25v at 0.2mA = 5w
which would have the most lenz lagging?
Jim