Squared hystressis loop iron-silicon alloy, expressly developed to provide lower core loss with higher permeability in the rolling direction. The elementar patters of crystals in the material are "oriented", or so arranged that the axis of easiest magnetization is nearly parallel and aligned in the direction of rolling. The alignment is accomplished by special cold -rolling and annealing processes.
Audio amplifiers; current, output, power transformers; chokes and saturable reactors; ferro-resonant regulators.
- Lower core losses as a consequence of design.
- Higher initial permeability.
- Higher permeability at higher inductions.
- Controlled gauge uniformity.
- More compact design - easier installation and mounting of transformers.
- More economical than cut, tape-wound "C" cores.
- VA/Temperature relationship is much more stable over a wide range of ambient temperatures as compared to cut, tape-wound "C" cores.
- Withstandes more severe vibration and shock than cur, tape-wound "C" cores.
Estimated Laminations per Weight
Characteristics of Core Stack Having Square Center
Magnetic Path Dimensions and Design Formulas
ℓ = 5.25 in. = 13.34 cm.
A = 0.766 in.2 = 4.94 cm.2
60 Hertz Reactance (N=number of turns)
Bmax = (76 x 103)/K1N Gauss per volt
Ho = (0.094 x 103) N Oersteds per milliampere of direct current
La = (0.49 x 10-8K1N2µac Henrys
These Laminations are tested under standard set up by ASTM A-346. A reprint of the standard method of test entitled "Alternating-current Magnetic Performance Of Laminated Core Specimens Using The Modified Hay Bridge Method" is available from ASTM. For reprints and prices, visit www.astm.org.