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

Body

Hi Doug,
Yes I agree & hear what you're saying.

The drawing captures all the circles all at their peak positive value.
If the magnetic path length is long in terms of time to traverse the
distance..... or there is some delaying device used in the circuit.

All those circles in the diagrams will not be at their peak value at the
same moment in time.
Those circles go from positive peak down to zero then to a negative peak at
a certain rate.

When properly arranged with suitable delay,  the Back emf flux can arrive
back at the input coil to re enforce the original input flux.

In this case though it isn't desirable to try to cancel out the Bemf
because it's put to good use another way.
So likely it does not apply to the BITT design.

Eg:
In Yagi style television aerials ...the longest element right at the back
of our TV antenna is called a "reflector".
They work out the timing of how far back to place this element .....so that
it "reflects" the signals which have already passed through the antenna
once.
So that the reflected signal bounces back again... in phase to re enforce
the new incoming signal at the "driven element" (the one the co ax cable is
connected to).
Producing an increased signal gain at the co ax cable.

Or if there is a long power train between a car engine and the wheels,
there's a delay in the power from the engine reaching the wheels.
So when the wheel's feel the load there's another delay before the wheels
re transmit that load back to the engine.
The delay ends up getting added together twice because of this effect.

Am I confusing the issue?
Gerry




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On Tue, Jan 30, 2018 at 1:36 AM, [email protected] [EVGRAY] <
[email protected]> wrote:

>
>
> Hi Gerry
>
> I understand the drawing show half an AC cycle, and understand what the
> circles represent, what the boxes represent...
>
> Still, there is that time period between polarity shifts not represented
> in the drawings!
>
> Imagine this to be one millisecond or one nano second- perhaps it is even
> a bit of  "negative time" who knows but the polarity shift event has
> something special to it I think and I think this is the time where it is
> "possible" to split the backemf forces that are "inherent" to forward
> current flow away from the forward current flow, and the backemf forces are
> now free to go wherever the resistance is less, and in case of BiTT, this
> decision which road to take happens at either the top two three-way
> junctions next to secondaries, or when polarity shifts with AC, the bottom
> two three way junctions...
>
> ciao
>
> Kone
>
>
> 
>