[2 pc] Toroid Core, Powdered Iron, 0.94" 24mm for inductor/flyback transformer

Description

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Toroid-24PI
Case:
Lot Size: 2 units
0.94" Toroid
Qty: 4
Powdered Iron Core
NOS Arnold Engineering part nr PT940-LL
OD: 0.94" (24mm)
ID: 0.56" (14.3mm)
Height: 0.32"  (8.0mm)
Magnetic path length:  5.73cm
Effective Core Area:  0.374cm^2
Effective Core Volume:  2.14cm^3
Inductance Index:  57.0 nH/N^2
Material: Arnold  Mix nr "LL"  (low loss)
Permeability:  70 +/-10%
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
Combined S&H savings on this item is limited by actual USPS chargeable weight
I only ship to buyer's EBAY shipping address
Purchases can only be changed or cancelled before payment.
Best Genuine USA parts from USA distribution.
Avoid Chinese counterfeit parts and Chinese seller problems!
Transit time 5-7 bus days in USA, however USPS does not guarantee these times, and can exceed them. If you have any time constraints, contact seller before bidding / buying, so we can both come to an agreement.
No cancellation possible after Payment.  PAYMENT CLOSES ORDER AND COMMITS IT FOR SHIPPING. Your shipping label is created and billed along with insurance the moment you click "PAY". Paypal and insurance charges are non-recoverable.
Any returns not resulting from seller wrongdoing will be assessed a restocking fee of 18% and will forfeit shipping costs.
International transit times can reach 8 weeks, 10 weeks for Italy and Brazil. You need to contact seller for alternate shipping options at extra cost if this is not acceptable to you.