Re: [EVGRAY] Re: Winding BiTT with C shape winding tool

Body

Hi Doug, 

 Here's my attempt to answer...
 "And my question is "what is it" that splits the backemf magnetic forces from the forward forces, and this split enables the backemf to take that lower resistance route back to the opposite secondary in the BiTT transformer?
 Maybe just the proper time-delay?"

 

 Usually in standard transformer Bemf flux opposes the flux which created it, in our case it's the input flux.
 So Bemf travels in opposite direction to input flux... in most cases.
 

 It doesn't matter if the total flux is 90% Bemf and only 10% input flux or 50% to 50% or what ever ratio.
 When the total flux going in a single direction 'sees' more than one path it will divide up in the ratio of how 'easy' the paths are to follow.  
 

 If one path is 80% easier than the other then 80% of total will go that way and 20% the harder way.
 

 But whatever the ratio of Bemf flux to input flux is, it will not change in either the easy or difficult paths.
 

 So whilst the paths are split the total ratio of input to Bemf flux doesn't change at all.
 

 In the BITT though,  they try to make the input flux path more difficult to follow by raising it's resistance or reluctance.
 With air gaps, different materials with different permeability values, less cross sectional area etc.
 

 So that the input flux value is governed more by input resistance of the path itself. Plus how much mmf magnetising force our input coil exerts mA Turns.
 

 Also in BITT they try to make the Bemf path from each output coil (where it is created) a very low loss path, compared to the input path.
 Almost equivalent to a short circuit to this output Bemf current or flux.
 

 The Bemf flux is travelling back the opposite way from the output coil, it 'sees' a difficult high loss way back to the input or a low loss path via the opposite output coil core and back again.
 By taking this 2nd route the Bemf flux on one core re enforces the input flux on the opposite coil core ...enhancing the output flux. And vice versa for the other output coil.
 

 

 The other part: Timing..... Maybe just the proper time-delay?"
 In a standard transformer or even a BITT we can use Bemf flux to our advantage.
 Remembering that the flux rises & falls rhythmically with the current.
 

 If we can arrange for a time delay between the input flux reaching the output coils such that. 
 The load does not try to draw current (creating a Bemf ) until after the first 1/4 cycle zero to 90 degrees has elapsed.
 After the first 90 degrees or approx 12.5 milliseconds at 50Hz the flux itself changes direction and starts to diminish.
 If our Bemf flux can arrive back at the input after this time, the the magnitude of the collapsing field will increase rather than decrease. Helping us.
 Meaning we need less input current to create this amount of flux so our input impedance goes up instead of down.
 

 That's what Tesla was doing with the patent Ole posted & what I try to do with the magnetically shielded wire.
 

 Sorry for rant but is not easy to explain in few words.
 Gerry