EXCLUSIVE FORUM FOR MACHINE DISMANTLERS AND REPAIR PEOPLE > Gary Indiana
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> Toroid core, powdered iron .94" 24MM, for power coil X4
Toroid core, powdered iron .94" 24MM, for power coil X4
NOS Arnold Engineering part nr PT940-LL
OD: 0.94" (24mm) ID: 0.56" (14.3mm) Height: 0.32" (8.0mm)
Effective Core Area: 0.374cm^2
Effective Core Volume: 2.14cm^3
Material: Arnold Mix nr "LL" (low loss)
Grey and blue epoxy enamel coated
This material is powdered iron, not ferrite. It is not suitable for transformers, only inductors. It has a distributed air gap inside the core, and thus stores energy (ideal transformer must not store energy).
It is suitable for high power filters and chokes, carrying large ripple currents and/or large DC current components, which would otherwise saturate a ferrite core.
It is not suitable for transformers in the forward transfer mode, only inductors. OK for FLYBACK transformer ( which is not a real x-former, but a coupled inductor). Not OK for Forward, Push-Pull, Half-Bridge or Full Bridge transformers
NOTE: POWDERED IRON IS HEAVIER THAN FERRITE
