Some tests on mono and bifilar coils

[conradelektro]

The idea is to compare monofilar and bifilar coils which are identical besides the fact that one is wound bifilar and the other monofilar.

There was a discussion in this thread

http://www.overunity.com/13460/teslas-coil-for-electro-magnets/495/#.UuahibS1KHs (starting here)

which had originally an other topic. So, I start this new tread which should be exactly on topic.


I have done some tests with a pair of pan cake coils:

See my videos (video info contains extensive description):

http://www.youtube.com/watch?v=fC84W0PIZoE

http://www.youtube.com/watch?v=spQ9yLdb7v4

http://www.youtube.com/watch?v=gCEqnX1JsGw

http://www.youtube.com/watch?v=tvDUAcC1hbk


I also did a "speed up under load" experiment with a bifilar coil, but it does not have a monofilar equivalent. I want to do this experiment and others (like with the pan cake coils mentioned above) with a new pair of coils.

See my video (video info contains extensive description, see also the attached PDF-file "Test Beschreibung"):

http://www.youtube.com/watch?v=vAXQBpuLu68


Attached are some PDF-files with background material.


Currently I am building and winding two new coils, one bifilar and the other monifilar (otherwise identical). Once the coils are finished I will be back.


Greetings, Conrad

[synchro1]

Try running some AC current through the monofilar and series bifilar pancake and see if you can notice any difference.

[MileHigh]

Conrad:

I an offer you a suggestion about the winding of your bifilar coil.  I am going to assume that you are going to wind it on a spool.  Make a tiny hole about one-half way up on the side of the spool.  When you wind the coil and you come to the hole, just push a small loop of the pair of wires through the hole.  The wires exit the hole and then loop back inside.  Then just finish off winding the coil.

Then you can carefully strip off some of insulation and then tin the exposed wires with some solder.  You can used that as a tap point to see the voltage action going on inside the coil.  You can observe the increased voltage potential between adjacent wires like that.

MileHigh

[conradelektro]

Conrad:

I an offer you a suggestion about the winding of your bifilar coil.  I am going to assume that you are going to wind it on a spool.  Make a tiny hole about one-half way up on the side of the spool.  When you wind the coil and you come to the hole, just push a small loop of the pair of wires through the hole.  The wires exit the hole and then loop back inside.  Then just finish off winding the coil.

Then you can carefully strip off some of insulation and then tin the exposed wires with some solder.  You can used that as a tap point to see the voltage action going on inside the coil.  You can observe the increased voltage potential between adjacent wires like that.

MileHigh

@MileHigh: good idea.

To see the increased voltage potential between adjacent wires I have to lead out two adjacent wires?

In the monofilar coil, a loop of wire from two consecutive turns?

In the bifilar coil, a loop of wire from the pair of wires?

Greetings, Conrad

[Farmhand]

That is a good idea.

I would say to the questions.  1) Yes, 2) No need but would be cool and handy, 3) Yes.

Can't wait to see the results.

Cheers