DLE-TEST17 : FULL MEASUREMENTS on the Bi-Toroïd Transformer (BiTT v1.5)
created on february 9, 2013 - JLN Labs - last update march 20, 2013
All informations and diagrams are published freely (freeware) and are intended for a private use and a non commercial use.
Toutes les informations et schémas sont publiés gratuitement ( freeware ) et sont destinés à un usage personnel et non commercial
I am very gratefull to Thane C. Heins for his encouragements and his very helpfull technical support
Cliquez ici pour la version FRANCAISE
March 19, 2013 - DLE-TEST17 : Here is a new serie of measurements that I have conducted on my replication of the Bi-Toroïd Transformer (BiTT v1.5) fully based on the BiTT from Potential Difference Inc. Canada. This transformer has already been tested in the DLE-TEST05, in this new test, I have connected a 2 Ohm non inductive 10 W resistor at the outputs. The ouput power dissipated by Joule effect in the resistor is calculated with the voltage measured accross it with a digital scope Fluke 123. The power at the BiTT input is calculated by measuring the voltage, the current and the cosinus f.
Below the setup used for the TEST-DLE17 :
Below the 2 Ohms resistor used as the LOAD made with two non inductive 1 Ohm/10W resistors connected in serie.
TESTS RESULTS on the BiTT v1.5 :
Below, the voltage, the current and the phase shifting measurements done at the BiTT input :
Below the voltage measurement accross the 2 Ohms LOAD :
March 20, 2013 - DLE-TEST17b : Here is a new loading test on the BiTT v1.5. The load resistance has been replaced by a strong headlight for bike (High Power CMS LED) connected via a switch to the BiTT secundaries outputs.
I have used a bike headlight WhiteEye (240 lumens). It is powered through a DC rectifier bridge.
We observe that the input voltage and current on the primary remains inchanged and also that the Cos (f) doesn't change significantly when the headlight is lit or not.
My replication v1.5 of the BiTT from PDI is not yet overunity. Today, in my BiTT replication, there are a lot of hysteresis losses and eddy losses due to the type of ferromagnetic material that I have used. Un good choice of a specific ferromagnetic material with low losses will permit to greatly increase the efficiency of the BiTT. We can observe that when a 2 Ohms resistor produces 3.06 Watts at the BiTT output or when a high power bike headlight is used, the phase shifting between the voltage and the current doesn't change much. The BiTT is really not a conventional transformer...
Below the video of the full tests done on the BiTTv1.5
Documents and references (courtesy of Thane C. Heins CEO of PDI Canada ) :
MIT Dr Zahn Bi Toroid Transformer Tutorial by Thane C. Heins
visits since december 29,2012
to Thane C. Heins' projects home page