1-20 of 538

Search Results for magnetic cores

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Book Chapter

By Douglas W. Dietrich
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001093
EISBN: 978-1-62708-162-7
..., ferrites, and stainless steels. The article also addresses corrosion resistance and provides insights on the selection of alloys for power generation applications, including motors, generators, and transformers. A short note on the design and fabrication of magnetic cores is also included. alloy...
Image
Published: 01 January 1990
Fig. 5 Effect of grain size on magnetic properties of pure iron and silicon iron. (a) Relationship between grain size and hysteresis loss for high-purity iron at B = 1 T (10 kG). (b) Variation of core loss with grain size for samples of 3.15 Si-Fe having similar cube-on-edge textures More
Image
Published: 01 January 1990
Fig. 18 Various parts that use metallic glasses. Most prominently featured are two spools of as-cast amorphous alloy for high-frequency and antitheft applications. Also shown (right side) are four wound magnetic cores made from amorphous alloy ribbon. Several high-frequency epoxy-encapsulated More
Image
Published: 09 June 2014
Fig. 12 Push-pull inverters. (a) Constant-voltage inverter. (b) Constant-current inverter. L CT is required to balance the voltages or currents delivered to both switches and must have a high coupling coefficient as suggested by the magnetic core. L, inductor; CT, center tapped More
Book Chapter

By Ray Cook, Bill Terlop
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005843
EISBN: 978-1-62708-167-2
... circuit. The turns are wound, most often, on a magnetic core that may be composed of magnetic laminations or ferrite. On radio frequency oscillators the frequency is sufficiently high to permit the elimination of the magnetic core. These transformers are called air-core transformers. Alternating...
Image
Published: 31 October 2011
Fig. 7 Cross section of tubes with coil and core for magnetic impulse welding More
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003153
EISBN: 978-1-62708-199-3
... to eliminate the wide variety in nomenclature formerly used. When originally adopted, the AISI designation number approximated ten times the maximum core loss in watts per pound, exhibited by 29 gage samples when tested at a flux density of 1.5 T (15 kG) and a magnetic circuit frequency of 60 Hz. More...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001337
EISBN: 978-1-62708-173-3
... through zero, which is important to cyclic reignition of the arc. Thyristors are employed in concert with magnetic cores to generate the square current waveform. Adjustable imbalance permits the operator to control the ratio of electrode positive (EP) to electrode negative (EN) current by dwell extension...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005846
EISBN: 978-1-62708-167-2
... cores gained widespread use in the transformer industry because they increased the amount of magnetic flux produced with the same alternating current. The higher the magnetic flux, the higher the emf, which results in an increase in energy transfer efficiency from the primary winding to the secondary...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002475
EISBN: 978-1-62708-194-8
... unit volume. Figure 4 shows dramatic reductions in the volume required for 1 MB (megabyte) of electronic memory storage from 1950 to 2010, a sixty-year interval during which the technology changed from small magnetic (ferrite) cores to IC chips ( Ref 13 ). Packaging had evolved as well...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006057
EISBN: 978-1-62708-175-7
... possible in metal injection molding parts. The article also discusses ferromagnetic cores used in alternating current applications and some permanent magnets, such as rare earth-cobalt magnets and neodymium-iron-boron (neo) magnets. ferritic stainless steel ferromagnetic cores hysteresis loss...
Image
Published: 01 January 1990
Fig. 11 Model of a single flux line considered as a single unit of magnetic flux, Φ 0 = 2 × 10 −15 Wb, filling a cylindrical volume of radius ξ, the coherence length. (a) The superelectron density rises to its maximum value within about ξ of the core of the flux line. (b) The magnetic field More
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
... core knockout machine and the A-frame core knockout machine and lists the advantages and disadvantages of these machines. The article describes the general factors in automated or manual gate removal process. It concludes with discussion on the various types of inspection, such as the liquid penetrant...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005863
EISBN: 978-1-62708-167-2
... of thickness δ. Fig. 3 A classical definition of the skin effect appearance showing distribution of current density from the surface of the cylinder workpiece toward the core. Source: Ref 1 Because electrical resistivity (ρ) is a function of temperature and relative magnetic permeability (μ r...
Book Chapter

By Vladimir Frankfurt, Philip Nash
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005857
EISBN: 978-1-62708-167-2
... that magnetic properties of the case changed greatly after induction heat treatment. For example, the coercive force of the case is 2 to 4 times greater than the coercive force of the core. This is because the core has a structure of pearlite plus ferrite that is magnetically soft (small coercivity, retentivity...
Image
Published: 09 June 2014
Fig. 2 Hysteresis loops and differential magnetic permeabilities as a function of magnetic field for (1) the core (non-heat-treated steels with 0.4% C material), (2) the case (same steel after induction heat treatment), and (3) a double-layer specimen consisting of both materials More
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005516
EISBN: 978-1-62708-197-9
..., and frequency selection. It discusses three modes of heat transfer: conduction, convection, and radiation, in induction heating. The article describes the factors affected by a distortion of the magnetic field at the coil end through a schematic illustration of distribution of three magnetic force components...
Book Chapter

By Sergio Lupi, Valery Rudnev
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005835
EISBN: 978-1-62708-167-2
.... The article also discusses the basic concepts of direct current and alternating current circuits, and reviews the theory of electromagnetic fields. alternating current circuits dc circuits electric field intensity emissivity heat transfer coefficient induction heating magnetic field physical...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005119
EISBN: 978-1-62708-186-3
... 3.15 7.65 Highly directional magnetic properties with lowest core loss and highest permeability when flux path is parallel to rolling direction; heavier thicknesses used in power transformers, thinner thicknesses generally used in distribution transformers. Energy savings improve with lower core loss...
Book Chapter

By J.R. Davis
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001306
EISBN: 978-1-62708-170-2
... Abstract Specialty steels encompass a broad range of ferrous alloys noted for their special processing characteristics (powder metallurgy alloys), corrosion resistance (stainless steels), wear resistance and toughness (tool steels), high strength (maraging steels), or magnetic properties...