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 Magnetic Field sources Magnetic field of a bar magnet and a solenoid Solenoid Solenoid 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 Magnetization Magnetization curve Field strength H Flux density B Residual flux density Magnetic circuit Magnetic field of a toroid Ф = F/ S Ф = Flux F = Magnetic force S = magnetic reluctance Force created by a magnetic field on a current carrying conductor F = B*I*L Electromagnetic inductance Electromotive force E = - ΔФ/Δt Mutual inductance Mutual inductance Self inductance 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 Magnetic recording / reading Variations in Hysteresis Curves . | MAGNETIC FLUX – PERMEABILITY – MAGNETIC CIRCUIT INDUCED ELECTROMOTIVE FORCE – SELF AND MUTUAL INDUCTANCES Magnetic Field sources Magnetic Field sources Magnetic field of a bar magnet and a solenoid Solenoid Solenoid 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 Magnetization Magnetization curve Field strength H Flux density B Residual flux density Magnetic circuit Magnetic field of a toroid Ф = F/ S Ф = Flux F = Magnetic force S = magnetic reluctance Force created by a magnetic field on a current carrying conductor F = B*I*L Electromagnetic inductance Electromotive force E = - ΔФ/Δt Mutual inductance Mutual inductance Self inductance 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 Magnetic recording / reading Variations in Hysteresis Curves | MAGNETIC FLUX – PERMEABILITY – MAGNETIC CIRCUIT INDUCED ELECTROMOTIVE FORCE – SELF AND MUTUAL INDUCTANCES Magnetic Field sources Magnetic Field sources Magnetic field of a bar magnet and a solenoid Solenoid Solenoid 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 Magnetization Magnetization curve Field strength H Flux density B Residual flux density Magnetic circuit Magnetic field of a toroid Ф = F/ S Ф = Flux F = Magnetic force S = magnetic reluctance Force created by a magnetic field on a current carrying conductor F = B*I*L Electromagnetic inductance Electromotive force E = - ΔФ/Δt Mutual .
