Nulling Wire

[Melbeta]

I have a question. I looked at an older schematic, and on the coil drawing, it has two sections of windings, and between them the connecting wire is LOOPED. What does this LOOP mean? Always wondered...
Melbeta

[Carl-NC]

I have a question. I looked at an older schematic, and on the coil drawing, it has two sections of windings, and between them the connecting wire is LOOPED. What does this LOOP mean? Always wondered...
Melbeta

On the Mini Pulse?

[Melbeta]

I am not exactly sure what the Mini Pulse is speaking about. There are two windings, and between the two windings, there is a loop in the wire. I thought it might be reversing the current flow. But am not sure, so decided to ask about it and why it is there. How do I explain it? It is like one loop in the wire between two separate windings, just sitting there all by its self. So I thought "Why?", and I cannot answer the question "Why?". So I decided to ask here.

So to show what I am speaking about, I took a kitchen napkin, and drew out the two windings, and the strange single winding between the two sets of coil windings. Now I cannot recall right now, where I saw it, but it was either the Tx set of windings or the Rx set of windings, and again, I cannot recall, just remember the strange singular loop between to sets of windings. Now this isolated loop, might be what you called a Mini Pulse, I just do not know for sure, so am asking to learn...
Melbeta

[Qiaozhi]

I have a question. I looked at an older schematic, and on the coil drawing, it has two sections of windings, and between them the connecting wire is LOOPED. What does this LOOP mean? Always wondered...
Melbeta

What older schematic are you referring to?

[kt315]

What older schematic are you referring to?

George, i know an answer. what she asked. i hold THE loop in a hand moving. https://www.youtube.com/watch?v=fMBdvlNN_WA

[Qiaozhi]

George, i know an answer. what she asked. i hold THE loop in a hand moving. https://www.youtube.com/watch?v=fMBdvlNN_WA

If that's what Melbeta is referring to, then it has nothing to do with Minipulse.

[Carl-NC]

I've moved this question to a new thread. Melbeta, you posted it in a thread about the Mini Pulse (a PI detector) and I think it has nothing to do with the Mini Pulse.

Most likely what you saw was a fine nulling wire that was taken off the center tap of a differential TX coil. The nulling wire is usually connected to the ground side of the TX coil to minimize capacitive coupling to the RX coil. With a differential TX coil, ground happens to be in the middle of the coil.

[Melbeta]

Carl, thanks, now I know what it was. I was puzzled. Now I am no longer puzzled. I do not even remember what schematic it was, just that it stuck in my mind. It was off of the center of a Tx winding drawing.
Melbeta