# Toroid Inductor Question

#### ben sorenson

Joined Feb 28, 2022
154
I was just wondering if there were any instances/applications in a toroid with a single winding where both ends of the windings are tied together, so essentially having only one lead in. Then a current is passed through it? I don't understand how that would work but I saw that done on something a while back.

#### MisterBill2

Joined Jan 23, 2018
15,700
A shorted circuit transformer winding only works in cartoons. Consider that if the winding is made into a closed loop that there is no way to pass current through it. so there is the first lie. And because there is no current nor voltage there is no power. And so nothing happens. But that is not what is presented in the fake show.

Joined Jul 18, 2013
27,658
I was just wondering if there were any instances/applications in a toroid with a single winding where both ends of the windings are tied together, so essentially having only one lead in. Then a current is passed through it? I don't understand how that would work but I saw that done on something a while back.
Explain a little clearer what you are implying, how would you achieve that?

#### Ya’akov

Joined Jan 27, 2019
8,171
No.

#### BobTPH

Joined Jun 5, 2013
7,557
A shorted winding on a transformer?

#### crutschow

Joined Mar 14, 2008
32,928
I saw that done on something a while back.
Then they were blowing smoke up you know where.

Joined Jul 18, 2013
27,658
How can there be current with only one lead IN ???

#### Ya’akov

Joined Jan 27, 2019
8,171
As much as you might want to be a contrarian, the fact is the the chances you will find something that the many thousands of brilliant investigators of electromagnetism missed is so exceedingly small you could probably win the lottery while simultaneously being hit by an asteroid and struck by lightning long before your naive groping in the dark finds something novel is what has been discarded by generations of genuine experts.

This doesn’t require an orthodoxy, it’s just a practical matter. It would require a conspiracy to suppress some useful information about electromagnetism that you would somehow, by chance, uncover.

Remember there are thousands of very highly educated people (in electromagnetism, it’s principles, and math) who would jump at the chance to reveal some overlooked mechanism that could provide free energy or hyper-efficiency. It could make the billions. You’d have to believe that those people were being suppressed to imagine there is something for you to find that hasn’t been seen, evaluated and discarded.

No insult is intended by this, I am just hoping you can develop a reasonable outlook and if you’d like, pursue actual knowledge of electromagnetism before you consider every fringe idea about it more relatable than the obviously effective and rigorously tested mainstream.

#### MisterBill2

Joined Jan 23, 2018
15,700
The example referenced by the TS does prove, once again, that not everything presented on the internet as real, is true.
That is to say, there is some fiction presented as fact.

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#### DickCappels

Joined Aug 21, 2008
10,068
be nice.

#### BobTPH

Joined Jun 5, 2013
7,557
There is current in a shorted coil if there is a changing magnetic field through the coil. Isn’t that how induction motors work?

Joined Jul 18, 2013
27,658
There is current in a shorted coil if there is a changing magnetic field through the coil. Isn’t that how induction motors work?
Yes.
At the point at switch on, an induction motor is a transformer with shorted secondary's, it has to get up to operating RPM Fast, in order to reduce current.

#### MisterBill2

Joined Jan 23, 2018
15,700
An induction motor is optimized to be a motor, and the excitation is intentionally applied quite different from a transformer torroid.

Joined Jul 18, 2013
27,658
An induction motor is optimized to be a motor, and the excitation is intentionally applied quite different from a transformer torroid.
The answer I gave was meant to indicate the condition at the very moment of switch on, before motion has started.
Very high current flows in the shorted turn 'secondary's'
Response to post #11.

#### schmitt trigger

Joined Jul 12, 2010
702
Well…. If it is cooled to absolute zero, and manage to keep it that way, then the secondary current would flow forever and ever.
One small problem, though: how can you achieve absolute zero?