Regular Transformer connected to the Bi-toroid Transformer (possible issue)

[taleo]

Hey guys,

I've replicated the BiTT with successful results, however I found one issue which I could not explain. I have a Kill-Watt-Meter which is just a device that measure the power being consumed off the grid from an appliance that you plug into the wall outlet.

So I hooked up a Kill-Watt-Meter to the wall outlet and connected a regular step-down transformer. Then I connected the output of the regular step-down transformer to input of the BiTT. When I add load to the BiTT I measure overunity from the input of the BiTT to the output for the BiTT. However, when I see the Kill-Watt-Readings from the input of the regular step-down transformer, I see more power being consumed than the output of the BiTT.

I can't come up with an explanation as to why. I am wondering if somehow the apparent power of the input of the BiTT is being somewhat transferred to the input of the step-transformer causing increased power consumption. I don't know if that even makes sense but I just can't figure out why on one side my measurements say one thing but on another side they say something else.

Has anyone had this problem before?
Thanks.

[MarkE]

Reactance.

[taleo]

An elaboration would have been appreciated. But it's okay, I figured it out. There's a 90 degree phase shift from the input of the step-down transformer to its output, which is the input of the biTT. The input of the biTT is seen as an inductive load to the step-down transformer so it doesn't matter what the power factor is on that side because its seeing the Apparent power as the True power.

That sucks though, there's gotta be a way around it. I'm gonna look into it some more.

[Neo-X]

Good job taleo. Can you post screenshots of your bitt? What kind of core did you use?

[taleo]

Thanks Neo-X. I've attached a photo of it. The top core is silicon steel. The bottom one is metglass with double the cross sectional area. But in reality I think it should be based one surface area not cross-sectional area because ac magnetic field travel on the surface of the core, that's how the wires get induced with the voltage. And I think the name for these cores should be called field divergence cores. It sounds more appropriate but I don't really care I'm just thinking out loud.