Pulse Transformer

Post Reply New Topic

This one is for all of you electronics obsessors. How would one go about winding a pulse transformer such that the secondary coil is separated horizontally and not vertically? That is to say, that there are not complete windings across the whole transformer core, and then a layer of wax paper and a following set of windings on top of the initial ones, but rather a set of windings positioned in such a way that they reach a maximum height, then the secondary wire jumps over a spacer and begins a whole new set of windings.

---------------------------- ||=||=||=||=||=||=||=||=||
---------------------------- Not this. ||=||=||=||=||=||=||=||=|| This. (if it helps any)
---------------------------- ||=||=||=||=||=||=||=||=||
---------------------------- ||=||=||=||=||=||=||=||=||

been way too long since ive messed with it, i am gonna have to think on it for a while. (Its been maybe 5-6 years since I had my electronics courses, so yeah :/

I'm not certain what you mean by horizontal instead of vertical in this instance.

Maybe if instead you described whether you want the separate windings as being concentric (one inside, outside) or stacked (one above, one below) or interleaved (wrap wire A once, then wire B twice, repeat)?

No, not concentric, here is a photograph of what I want to achieve:
http://www.jetcham.com.tw/pics/TR04-S010-b.jpg
Something like that, but with more windings. Also, would anyone happen to know if, when superimposing secondary coils, the direction of turning matters (that is, going from one side of the core to the other in the same way that the first coil did). Why or why not?

Not sure I'm grasping the configuration. It sounds like you mean that the secondaries are extend axially (secondary stacked axially on top of the primary),
rather than the secondaries extending radially (secondary wound on top of the primary).

IOW, if you cut it in half along it's axis it would look like this (where P=cut end of a primary wire, S=cut end of a secondary, -core- = core material or air):

#1

P|S|S|S
-core-
P|S|S|S

rather than this:

#2

S|S|S|S
P|P|P|P
-core-
P|P|P|P
S|S|S|S

There's no reason that I know of why the former (#1) wouldn't work. As for which way to wind the secondary, if the helix of the primary is one way and helix of the secondary is the other way, then the secondary's output will be inverted. So, it doesn't matter (you just swap the leads that go to whatever the secondary is connected to).

Thanks everyone, this should help.