A green and clean environment is a human right!

Projects by members => Projects by members => Steve => Topic started by: Steve on December 29, 2013, 13:46:18 pm

Title: Bifilar coil or normal coil test results.
Post by: Login to see usernames on December 29, 2013, 13:46:18 pm

Dear all,

I like to share my humble test results of today.
The goal of the test was to create my own reference measurements of an air core, wound in different ways.
3 options: 1 normal coil, 2 bifilar coil in parallel and 3 bifilar coil in serie.
I took one string of wire, which i used in all tests. First i wounded the normal coil and then i cut it in half for the bifilar coil tests.
Not so much done in a test like this is to use a strong magnet with a scale for to measure the strength of the magnetfield of the coils.

Coil diameter of 45mm, single layer
128 turns
Wire 0,5mm

Single coil        : pulled 0,77kg       at  5,3V/2,95A     0,216uH   0,374mH   2,0 ohm   15,6W   
Bif coil parallel: pulled 0,53kg       at  1,3V/2,95A     0,155uH   0,098mH   0,6 ohm    3,83W 
Bif coil series    : pulled 0,78kg      at  5,3V/2,95A     0,270uH   0,368mH   2,0 ohm   15,6W   
Bif coil series    : pulled 0,51kg      at  2,6V/1,47A                                                              3,83W   

From an electromagnet point of view this test was a little surprise, but on the other hand, it might have been my silly test method.
I expected that the bif coil in series would have been stronger.
Maybe that with a core the results might be different. Or maybe smaller coil, but thicker…..


Steve

Title: Re: Bifilar coil or normal coil test results.
Post by: Login to see usernames on December 29, 2013, 14:09:36 pm

Thanks Steve,but how this will apply to hho?I read your thread ''Pulsed signal 60% more effective then strait DC'' and i think you got something there but in the end you said was a wast of time because your meters was inacurate or something...dont understand clearly the end results on that.

Title: Re: Bifilar coil or normal coil test results.
Post by: Login to see usernames on December 29, 2013, 18:13:26 pm

This test was just for me to get inside on the bifilar coil.
For my HHO project and for my magnet current generator project.
I thought that some of you are also working with bifilar coils. Thats why i shared this info.
Its clearly that you gain on capacitance, if you wind a COIL bifilar and put them in series.
Meyer stated that your coil capacitance must have a higher capacitance then your cell.

cheers

I ll try to answer your other question in my other topic.. ;)