The bifilar pancake coil at its resonant frequency

[synchro1]

We don't know how that so called Tesla bifilar is connected. There's a strong chance it's hairpin not serial. Secondly, "The old scientist" meant to say "Inductance" and used the term "Resistance" by mistake, largely because he has English for a second language.

I'm explaining why my Tesla bifilar picked up twice the trombone clips in my video. No one ever offered an alternative explanation, nor has anyone ever been able to replicate the test.

"When you have a bifilar pair like this, you can measure the inductance of one of the coils, ignoring the other; call that value of inductance L.

Now, if the two coils are connected in series aiding configuration, the inductance will be 4*L.

If they are connected the other way, series opposing, the inductance of the combination will be very small".

[synchro1]

MH & TK,

I just tested a biflar for inductance in Henries and resistance in Ohms. The inductance of each coil separately is 1.45 mh apiece or L. The inductance of the serial connected bifilar (Beginning of one coil wire to the end wire of the other) measured at 5.81 mh. That's four times the inductance of one individual coil. The inductance of the serial connection is 4 L. The inductance of the hairpin connection is equal to .725 mh or 1/2 L. Resistance of each coil separately is 2.5 Ohms or R. Serial and hairpin connections both equal 5 Ohms, or 2 R.

I can upload a definitive video and put an end to this controversy once and for all. Any more wise guy back talk from you two trolls?

The inductance of the hairpin (Beginning of one coil wire to the beginning of the other) is 1/2 the inductance of one individual coil. That equals 8 times the difference in inductance in Henries between the two alternative possible bifilar connections! An enormous difference. Hold the pickles!

[MileHigh]

The inductance of a coil is proportional to the square of the number of the turns.  A 100-turn coil will have four times the inductance of a 50-turn coil.

A 100-turn regular coil will have the same inductance as a series-bifilar coil consisting of 50 turns in series with 50 turns.  TK posted pictures of a regular coil and an equivalent series-bifilar coil connected to an inductance meter where the inductance meter shows the same number of Henries for each coil.

[synchro1]

The inductance of a coil is proportional to the square of the number of the turns.  A 100-turn coil will have four times the inductance of a 50-turn coil.

A 100-turn regular coil will have the same inductance as a series-bifilar coil consisting of 50 turns in series with 50 turns.  TK posted pictures of a regular coil and an equivalent series-bifilar coil connected to an inductance meter where the inductance meter shows the same number of Henries for each coil.

Milehigh,

Hey...Wind one and measure it for yourself as I just did then get back with your results. TK's inductance meter is "A Piece of Crap" China Palace back ally trash salvage midnight special!

[nelsonrochaa]

Milehigh,

Hey...Wind one and measure it for yourself as I just did then get back with your results.

Ahhh ! One of the best things i ear in that topic   Good shot synchro1 , sometimes someone need to say some trues , to some fellows that simple not show nothing all this years but only open so large their mouth to criticize the nice work of persons like TheOldScientist without even think they not contribute in nothing make that type of considerations . Seems they have special pleasure put dislike in videos and make bad considerations about valid works. Real sad see that type of behavior .

really sad