Bi-Toroid Transformer (BiTT) Load Isolation Transformer

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The Bi-Toroid (Load Isolation) Transformer is a new patented transformer design which is used to isolate electric generators from their loads.

The Bi-Toroid Transformer (BiTT) operates essentially as a magnetic diode and magnetically isolates the electric generator from the load and allows the generator to deliver power without requiring an increase in prime mover input (i.e. an on-load increase in drive shaft mechanical input power to the generator).

The Bi-Toroid Transformer allows the delivery of electric power in one direction only and eliminates Generator Armature Reaction from the generator's operation.

Generator Armature Reaction is a Counter-Electromagnetic-Torque which is produced by the magnetic fields which are created around the current bearing wires inside all conventional generators when they are placed on-load and deliver electric power.

The generator's on-load induced counter torque performs negative work in opposition to the torque direction provided by the prime mover and it always necessitates in increase in the mechanical drive shaft input power to the generator which is provided by the prime mover.

80% of the cost of generating electricity is a direct result of Generator Armature Reaction as is 80% of waste and pollution produced.

PROTOTYPE VIDEO DEMONSTRATION: Bi-Toroid Transformer Operation and Conventional Transformer Operation

Conventional Transformer Operation:

As demonstrated in the video demonstration (below) at time 1.48, when the single coil generator delivers 13.5 Watts to the purely resistive load through the conventional toroid transformer the prime mover input consumption and cost increases by 16 Watts (as show on the Power Analyzer).

This prime mover increase requirement is caused by Generator Armature Reaction.

Bi-Toroid Transformer Operation:

At time 0.59 when the generator delivers 11.4 Watts to the same purely resistive load through the Bi-Toroid Transformer the input power to the prime mover is reduced by 10 Watts.

The prime mover increase requirement normally caused by Generator Armature Reaction is eliminated.

The Bi-Toroid Transformer allows the generator to deliver electrical output power to the load with less input power to the prime mover and less mechanical input power than was required at idle on no-load.

The oscilloscope demonstrates the differences in the two transformer primary coils' Power Factor when the transformer secondaries are connected to a purely resistive load with a Power Factor of 1.

The load power factor is transferred to conventional transformer's primary and the conventional transformer's primary consumes Real Power while delivering Real Power to the load.

The Bi-Toroid Transformer on the other hand delivers Real Power to the load but the primary coil consumes almost pure Reactive Power.

In conventional transformer operation the load power factor dictates the transformer primary power factor as well as the power factor of the generator coil. Real Power is delivered to the load and Real Power is consumed.

In Bi-Toroid Transformer operation the transformer primary power factor as well as the power factor of the generator coil are virtually unaffected by the load power factor. Real Power is delivered to the load and Reactive Power is consumed by the transformer primary with no Generator Armature


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  • Name:
    Thane Heins
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  • Thane is inspired by:
    Developing clean, sustainable and low cost transportation innovation alternatives to fossil fuels.

    Developing innovations that increase electric vehicle driving range, reduce the cost of electric vehicle adoption, electric vehicle purchasing and cost of ownership.
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