Thane Heins Perepiteia.

[aether22]

Larry, Thanks very much for the method.

Though I think with a hole saw (unless I switch to a spade bit) I will need to cut the wood through to sever it and then glue the 2 pieces back together, still it's the best idea yet so I think I'll do it, just need to swap the hole saw size I just bought for one slightly smaller. (I'll ensure that the coil can be moved over the core so they coil can be pushed back to the edge of the core once the wooden holder is off it)

I just tested the largest single coil I previously made with all 18 magnets and no acceleration was apparent so it is increasingly clear my .53 (approx 23 gauge) wire is all wrong.
Though it is possible that adding more coils mas a greater effect than adding the same number of turns to a single coil.

[OilBarren]

What you have is a transformer that maintains a constant input power over a wide range of output power.  You have successfully isolated the primary from the secondaries, and this may have some practical use, but so far it comes at a high cost: the output power is considerably less than the input power.

1ST STEP - ISOLATE PRIMARY (check)
2ND STEP - EFFICIENCY OTIMIZATION (in progress)

YESTERDAY LUC MADE AN NEW PRIMARY AND AT A 1 ohm LOAD WE NOW HAVE OUR
BI-TOROID EFFICIENCY AT 65% AND WITH THE CONVENIONAL TOROID IT IS 18% AT 1 ohms.

POWER FACTOR DOES NOT DEVIATE FROM OPEN CIRCUIT TO SHORT CIRCUIT.

INCREASING THE EFFICIENCY IS NOW A "SIMPLE" MATTER OF INCREASING SECONDARY AND/OR PRIMARY TURNS RATIO.

AS LONG AS THE SECONDARY DOES NOT SATURATE AND BLEED BACK THROUGH THE PRIMARY THE EFFICIENCY CAN BE VIRTUALLY ANY NUMBER BECAUSE THE SECONDARY SELF-REGULATES ITSELF AND THE PRIMARY ONLY SUPPLIES REACTIVE CURRENT.

Thane

[OilBarren]

@Thane,
Is your new secondary core coiled soft steel? Does the clamp make a difference in performance? I noticed a large vibration in my bi-rectangular version, does the clamp improve the output?
Thanks,
Larry

LARRY,
MAGNETIC METALS WERE KIND ENOUGH TO SUPPLY LUC WITH 2 NEW SECONDARY TOROIDS. PERHAPS LUC CAN UPLOAD THE METAL SPECS AT SOME POINT.

WHAT I CAN TELL YOU IS THE SECONDARY IS SUPER PERMALLOY WITH A RELATIVE PERMEABILITY OF 200,000 WHICH IS 20 TIMES HIGHER THAN CONVENTIONAL TRANSFORMER STEEL - THIS PROVIDES THE SECONDARY WITH HIGHER FIELD MAGNIFICATION - LOWER RELUCTANCE - LOWER COERCIVE FORCE - AND LOWER REMNANT FLUX WHICH ALL ADDS UP TO A THINNER HYSTERISIS CURVE.   

AGAIN THE PRIMARY IS REMOVABLE - SO THE CLAMP DECREASES THE AIR GAP BETWEEN THE PRIMARY AND SECONDARY - REDUCES EDDY CURRENTS AND INCREASES PRIMARY TO SECONDARY FLUX TRANSFER IN OUR PROTOTYPE(which is not optimized to provide efficiency but is designed to demonstrate proof of concept - f_ck!) AND SO YES IT DOES IMPROVE THE OUTPUT.

Thane

[PerpetualLurker]

THE PRIMARY ONLY SUPPLIES REACTIVE CURRENT.

By this do you mean the current in the primary is 90 degrees out of phase with the voltage and the power factor displayed on the meter in your photos as cos theta is essentially zero?

[OilBarren]

THE PRIMARY ONLY SUPPLIES REACTIVE CURRENT.

By this do you mean the current in the primary is 90 degrees out of phase with the voltage and the power factor displayed on the meter in your photos as cos theta is essentially zero?

ONCE THE PROTOTYPE IS OPTIMIZED - THAT IS EXACTLY ONE OF THE OPERATIONAL PARAMATERS.

THE PRIMARY IS ISOLATED AND WILL OPERATE WITH A Pf = 0 AND SHOULD NOT DEVIATE FROM NO LOAD TO FULL LOAD.

Thane