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Glossary of terms for the magnetics industry Select a letter: A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z B B - Magnetic Induction The magnetic field induced by a field strength, H. It is the vector sum, of each point within the substance, of the magnetic field strength and resultant intrinsic induction. Magnetic induction is the flux per unit area normal to the direction of the magnetic path. Bd - Remanent Induction Any magnetic induction that remains in a magnetic material after removal of an applied saturating magnetic field, Hs. (Bd is the magnetic induction at any point on the demagnetization curve; measured in gauss or tesla.) Bd/Hd - Slope Of The Operating Line The ratio of the remanent induction, Bd, to a demagnetizing force, Hd. It is also referred to as the permeance coefficient, shear line, load line and unit permeance. Bd x Hd - Energy Product Indicates the energy that a magnetic material can supply to an external magnetic circuit when operating at the Bd, Hd point on its demagnetization curve; measured in megaGauss-Oersteds (MGOe) or kiloJoules per cubic meter (kJ/m3). Bis (or Js) - Saturation Intrinsic Induction The maximum intrinsic induction possible in a material. Bg - Magnetic Induction In The Air Gap The average value of magnetic induction over the area of the air gap, Ag; or it is the magnetic induction measured at a specific point within the air gap; measured in Gauss. Bi (or J) - Intrinsic Induction The contribution of the magnetic material to the total magnetic induction, B. It is the vector difference between the magnetic induction in the material and the magnetic induction that would exist in a vacuum under the same field strength, H. This relation is expressed by the equation: Bi = B - Hem where; Bi = intrinsic induction in gauss (or tesla); B = magnetic induction in gauss (or tesla); Hem = field strength in oersteds (or kA/m). Br - Residual Induction (or Flux Density) The magnetic induction corresponding to zero magnetizing force in a magnetic material after saturation in a closed circuit; measured in gauss or tesla. Band Pass The frequency range over which an inductor or a capacitor exhibits low impedance. Band Stop The frequency range over which an inductor or a capacitor exhibits high impedance. BH Loop A hysteresis loop of four quadrants. In practice, usually only the first and second or, more typically, only the second quadrant is shown. Bifilar Winding Two strands of magnet wire wound side-by-side. Bm Maximum induction. Bobbin The injection molded form upon which the coil is wound on many C-cores, pot cores, and laminations. Boost Converter A switch-mode power supply (SMPS) that switches the input voltage to a higher output voltage. Also called an "up switcher." Bridge See Inductance bridge. Buck Converter A switch-mode power supply (SMPS) that switches the input voltage to a lower output voltage. Also called a "down switcher." Please send all web related questions/comments to the Webmaster. TOP | BACK | HOME | HELP | MAP | CONTACT |
