The heating of the core in the unit is due, IMO, to eddy-type currents, let's face it we have metal inside a moving magnetic field, the solenoids. The metal must not be iron or any other magnetic metal or it would destroy itself in no time at all, paramagnetic is ok. I believe SM used what he had in the speaker business. I think he used tin-coated copper wire with ordinary PVC insulation, this is why he was monitoring the temperature all the time, more than half an hour and the PVC would be so soft it would start the break down. Going back to the multiple phase shifting or delay. When returning the resonance back into the "front end", the chokes come into play. In the big TPU of SM all the wires of the chokes go too and from the coils of the TPU and not one goes to the driver!!!! when you know how the "b" coils are connected (SM left those out as well as the others of the "c" coils, you will understand how he "looped" the TPU to keep it going)  Think of the child on the swing oscillating and every so many oscillations you give it a kick, the famous kick, it is all revolved around the coils "b" and the "B" mosfet with it's separate ground reference because the source of "B" is + except when "B" is ON and oscillating, when OFF the accumulated charge in the capacitors feed the kick through the internal and external Mosfet diode and into the center tapping of the "b" coils to charge the chokes. You see I have done a lot of homework on this, I needed to get inside the head of SM, these things are not easy to explain as he said many times. Regards Mike
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Topic: STEAP and the TPU (Read 18187 times)
