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Tham khảo tài liệu unit 8: từ thông độ thấm mạch, kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | MAGNETIC FLUX – PERMEABILITY – MAGNETIC CIRCUIT INDUCED ELECTROMOTIVE FORCE – SELF AND MUTUAL INDUCTANCES Magnetic Field sources www.themegallery.com Magnetic Field sources www.themegallery.com Magnetic field of a bar magnet and a solenoid www.themegallery.com Solenoid www.themegallery.com Solenoid www.themegallery.com Magnetic flux A measure of quantity of magnetism, taking account of the strength and the extent of a magnetic field Flux per unit area = flux density B = Ф / A B = H x µ µ = permeability www.themegallery.com Magnetization www.themegallery.com www.themegallery.com Magnetization curve Field strength H Flux density B Residual flux density www.themegallery.com Magnetic circuit Magnetic field of a toroid Ф = F/ S Ф = Flux F = Magnetic force S = magnetic reluctance www.themegallery.com Force created by a magnetic field on a current carrying conductor F = B*I*L www.themegallery.com Electromagnetic inductance Electromotive force E = - ΔФ/Δt www.themegallery.com Mutual inductance www.themegallery.com Mutual inductance www.themegallery.com Self inductance www.themegallery.com Self inductance Where: VL = the induced voltage in volts N = the number of turns in the coil dø/dt = the rate of change in magnetic flux in webers per second www.themegallery.com Magnetic recording / reading www.themegallery.com Variations in Hysteresis Curves . | MAGNETIC FLUX – PERMEABILITY – MAGNETIC CIRCUIT INDUCED ELECTROMOTIVE FORCE – SELF AND MUTUAL INDUCTANCES Magnetic Field sources www.themegallery.com Magnetic Field sources www.themegallery.com Magnetic field of a bar magnet and a solenoid www.themegallery.com Solenoid www.themegallery.com Solenoid www.themegallery.com Magnetic flux A measure of quantity of magnetism, taking account of the strength and the extent of a magnetic field Flux per unit area = flux density B = Ф / A B = H x µ µ = permeability www.themegallery.com Magnetization www.themegallery.com www.themegallery.com Magnetization curve Field strength H Flux density B Residual flux density www.themegallery.com Magnetic circuit Magnetic field of a toroid Ф = F/ S Ф = Flux F = Magnetic force S = magnetic reluctance www.themegallery.com Force created by a magnetic field on a current carrying conductor F = B*I*L www.themegallery.com Electromagnetic inductance Electromotive force E = - ΔФ/Δt www.themegallery.com Mutual inductance www.themegallery.com Mutual inductance www.themegallery.com Self inductance www.themegallery.com Self inductance Where: VL = the induced voltage in volts N = the number of turns in the coil dø/dt = the rate of change in magnetic flux in webers per second www.themegallery.com Magnetic recording / reading www.themegallery.com Variations in Hysteresis Curves www.themegallery.com | MAGNETIC FLUX – PERMEABILITY – MAGNETIC CIRCUIT INDUCED ELECTROMOTIVE FORCE – SELF AND MUTUAL INDUCTANCES Magnetic Field sources www.themegallery.com Magnetic Field sources www.themegallery.com Magnetic field of a bar magnet and a solenoid www.themegallery.com Solenoid www.themegallery.com Solenoid www.themegallery.com Magnetic flux A measure of quantity of magnetism, taking account of the strength and the extent of a magnetic field Flux per unit area = flux density B = Ф / A B = H x µ µ = permeability www.themegallery.com Magnetization www.themegallery.com www.themegallery.com Magnetization curve Field strength H Flux density B Residual flux density www.themegallery.com Magnetic circuit Magnetic field of a toroid Ф = F/ S Ф = Flux F = Magnetic force S = magnetic reluctance www.themegallery.com Force created by a magnetic field on a current carrying conductor F = B*I*L www.themegallery.com Electromagnetic inductance Electromotive force E = - ΔФ/Δt www.themegallery.com Mutual .
