1. Potential +/- Difference Inc.
How a Bi-Toroid Transformer Outperforms a Conventional Transformer
A Bi-Toroid Transformer (BiTT) outperforms a conventional transformer by diverting secondary coil BEMF
induced magnetic flux away from the primary and using that flux to do work.
P = V x I x 0 = 0 Watts
When the PF = 0 the mean power
consumption = 0 Watts because all
primary power is Reactive Power.
Fig. 1 NO-LOAD Magnetic Flux Flow Fig. 2 No-load scope shot PF = 0 Fig. 3 No-load V, I & P
Conventional Transformer Sine Waves
P = V x I x 1 > 0 Watts
When the PF = 1 the mean
power consumption > 0 Watts
because all primary power is
Real Power.
Fig. 4 ON-LOAD Magnetic Flux Flow Fig. 5 On-load scope shot PF = 1 Fig. 6 On-load V, I & P
Conventional Transformer Sine Waves
Secondary Coil BEMF Induced Flux in the Primary Coil Causes:
1. The primary coil impedance to drop. ZT
2. Which causes the primary coil input current to increase. IP
3. Which causes the primary coil power consumption to increase. PP
4. Which causes primary coil to heat up. PT
5. Which causes transformer efficiency to decrease. EP
6. And primary coil power factor to mirror the load. PFprimary = PFload

2. Fig. 6 shows the magnetic flux flow direction in a BiTT transformer on no-load. When a load is placed on
the secondary coils the load current induces a secondary magnetic field flux which does not couple back
through the primary coil (Fig. 7).
On no-load the BiTT operates like any
conventional transformer with a zero
power factor, reactive power and zero
NET power consumption.
Fig. 6 NO-LOAD Primary to Secondary magnetic Flux Delivery in a BiTT PF = 0
On-load the BiTT operates with a zero
power factor, reactive power and zero
NET power consumption in the primary
because the secondary coil BEMF induced
magnetic flux is diverted away from the
primary coil.
The on-load induced magnetic flux from
secondary coil #1 is diverted into secondary
Fig. 7 ON-LOAD Primary to Secondary Magnetic Flux coil #2 and vice versa where it adds to the
Delivery in a BiTT PF = 0 magnetic flux delivered by the primary.
The absence of secondary induced flux
coupling back through the primary ensures
that the primary current does not increase
when placed on-load.