Bi-toroid Transformer of Thane C. Heins

[gyula]

Volt-ampere reactive - Wikipedia, the free encyclopediaAC power - Wikipedia, the free encyclopedia you can calculate the complex power S which is consumed by the primary, using the Phitagoras formula for the right triangle where P and Q are already known when the phase angle is known that is.)

Question is whether we can neglect the reactive power input to the transformer primary or not? I do not think we can because the var power must also be supplied by our power source, in your case by the signal generator or the amplifier, in other cases by the AC mains.

I am puzzled by your third test: did you mean the secondary current was 0.835 mA ie you used an AC ampermeter for doing the actual short? You may wish to repeat this test because it would be good info how this transformer behaves at higher input AC voltages like a few volts or even at some 10 volts if possible.

I cannot answer whether you go on building another transformer (a prototype as you say), this must be decided by you, sorry. What I wrote above as an evaluation of your data comes from conventional science knowledge, and it is possible that in many countries the electric meter does not register var power...

Greetings, Gyula

[kavkav]

Thank for the explanation Gyula.

Yes I made a mistake I meant 216 to 218 Micro Amperes. And yes I used an AC ammeter for measuring the secondary current of 0.835 mA or 835 micro amperes.

I'll run another test hopefully Monday and this time I'll bring capacitors to match the inductance of the secondary. I will also use higher voltages using the amplifier.

[kavkav]

Also, regarding the input reactive power, should I add a capacitor to match the inductance for the input coil?

[kavkav]

I failed to mention, my coupling is not that good due to my hand wounded cores. I have a similar configuration to Mr.Clean's BITT. The windings could be a lot tighter and I kind of messed up with the cores because my primary core has a detachable centre which is not touching the rest of the primary core which I imagine would hinder the coupling. On top of that my second secondary ripped half way of my winding and I tied it back and continued winding but for some reason its inductance is significantly lower than my other secondary. That's why I call this prototype impractical. But hopefully a good proof of concept. I managed to get lab time for next Wednesday.

[gyula]

Hi kavkav,

Okay for the answers. In the lab can you have access to a capacitor selector "box"? like shown here Build a Resistor/Capacitor Selection BoxOTTAWA UNIVERSITY - BI-TOROID DEMO July 11, 2009.mov - YouTube and for instance Naudin also tinkered with bi-toroids: Full measurements and tests on the Thane C. Heins' BiTT v1.5 (Bi-Toroid Transformer) - YouTube


Greetings, Gyula

[mr.clean]

hi all, been busy but i wanted to try the JLNaudin MEG circuit on the Bitoroid, pretty good, so im gonna do some more experiments soon...

BiToroid Resonant Driver: MEG Circuit - YouTube

[zolgar]

Ferrite BiTT, MEG Driver Circuit

Hi Mr.Clean, This new demonstration is quite interesting. It appears there is more than meets the eye to your transformer design; internal construction techniques which have apparently produced a working effect. The core thicknesses do not seem to be altered to effect permeability. Thanks for sharing, I would like to suggest all kinds of new experiments with plenty of meters all over your device, but I am sure that you are well aware of how to show the details of output energy loaded, input energy loaded and unloaded etc.

There is one specific thing I would like to ascertain - how well it produces light with a 12V filament type bulb.

[SunofFather]

I try this setup, but not with sine, with square to primary on who parralel capasitor. Seems no more out than you put in.

[mr.clean]

I try this setup, but not with sine, with square to primary on who parralel capasitor. Seems no more out than you put in.

i find that a single positive square pulse can only go so far before the core is saturated, the Mazzilli push-pull circuit worked well, but in tuning a pos and neg pulse h bridge worked best.

one thing is you really need to be able to control the duty cycle, to get as short of an on-time as possible

[zolgar]

Driver Coils

The matter of generating AC energy transfer with a dual stranded input configuration, by comparison with a single coil being switched in two directions. There are less switches; the potential of each coil builds with instant voltage supply.

[Berg]

Bi-toroid Transformer Sayings

i find that a single positive square pulse can only go so far before the core is saturated, the Mazzilli push-pull circuit worked well, but in tuning a pos and neg pulse h bridge worked best.

one thing is you really need to be able to control the duty cycle, to get as short of an on-time as possible

Thanks, mr.clean, for that bit of information.

Bi-toroid Transformer Sayings

One thing is you really need to be able to control the duty cycle, to get as short of an on-time as possible.The DC input current doesn't change with and without a load.Test of Bi-Toroid Transformer (BiTT v2.1) powered in DC - YouTube

If anybody wants to add, please feel free.

Regards

Berg

[mrtarslan]

Sorry, i dont understand, how can i calculate this bi-toroid transformer for from specific power input to output power? Is there any calcutation for cable thickness and turning and transformer core dimensions?
Thanks, good days.

[tturner]

been awhile

im a complete newbie but liked bitt bc its simplicity wondering if any new progress has happened in the last month i would like to replicate if it works bc im in a energy crisis

[tturner]

been awhile

im a complete newbie but liked bitt bc its simplicity wondering if any new progress has happened in the last month i would like to replicate if it works bc im if anyone could suggest something on the same difficulty level that they know work would be great

[tturner]

been awhile

im a complete newbie but liked bitt bc its simplicity wondering if any new progress has happened in the last month i would like to replicate if it works bc im if anyone could suggest something on the same difficulty level that they know work would be great pm me