3-Dimensional Transformer

[poynt99]

Agreed Vortex1.

[d3x0r]

Well the high voltage spikes would be attributed to high change of magnetic field... so it sheds it's field very quickly.

[tinman]

A couple of offhand guesses for the distortion would be Miller effect soft clamping by the drive transistor, (dV/dt) or a soft clamping by Vce being exceeded. As you say Poynt, without knowing the full circuit and drive setup it's hard to say. The transistor type would be a good starting point to look at. Then maybe try to drive an equivalent coupled inductor (with equivalent leakage inductance) and see if you still get the same distortion on the first positive ring. That would throw the distortion back onto the drive circuit. The rest is quite normal for a coupled  inductor with high leakage inductance that  unloads at some point in the switching cycle.

Regards, Vortex1

It was just something i threw together,and do not know if it has anything over a standard wound transformer. The transistor is a tip3055,and it is being triggered with my SG-thats it,nothing more to it. It may be the core material i am using that is causing the distortion  -which is cast iron filings. These i get from the brake lathe at work when we machine brake disc's and drums.

I have not done any more testing,as i have been busy with something else.
Probably nothing to it-more just a spur of the moment experiment-->that i see ALVARO did some time ago anyway.

[ALVARO_CS]

enjoy