At Speedofer Components Pvt. Ltd., our commitment to excellence is reflected in our Quality Policy. We are dedicated to manufacturing products that align with the specific requirements of our customers. Additionally, our pledge extends beyond the production phase, as we are equally devoted to providing outstanding after-sales service. We believe in achieving this through a continuous process of improvement within our Quality Management system.

Our pursuit of excellence is guided by specific Quality Objectives, including :-

Adapting to Changing Technology :- We are committed to staying
abreast of the ever-evolving technology landscape in the soft ferrite core industry. This
commitment drives us to continually enhance our Quality Measurement System to meet the
challenges posed by changing technologies.

Continuous Improvement :- Embracing a philosophy of continuous improvement, we strive to refine and enhance our processes to ensure the highest quality in our soft ferrite core products. This dedication is pivotal in maintaining our position at the forefront of technological advancements.

At Speedofer Components Pvt. Ltd., our Company Philosophy revolves around the principles of
continual improvement and adapting to technological changes in the soft ferrite core
industry. We emphasize the creation of a healthy working environment for our employees and
nurturing strong relationships with our business partners.

In essence, our Company Philosophy encapsulates our commitment to growth, innovation, and
the creation of a positive and sustainable impact within the soft ferrite core industry.
Speedofer Components Pvt. Ltd. is dedicated to being a dynamic force that embraces change,
ensures quality, and builds lasting relationships.

1) Initial Permeability, µ_{i}This is the limit value of B/H where H is indefinitely close to

zero at the initial magnetization curve of a ferromagnetic substance. µ_{i}= 1 lim B µ_{0}(H--->0) H Where µ_{0}Permeability in Vacuum (4πx10-^{7}H/m) H Magnetic Field Strength (A/m) B Magnetic Flux Density (T) 2) Effective Permeability, µ_{e}Effective Permeability of a core forming a closed circuit where

leakage flux is negligibly small. µ_{e}= L_{e}µ_{0}A_{e}N^{2}Where L Self Inductance of Coil with Core (H) N Number of Turns in Coil L_{e}Effective Magnetic Path Length of Core (m) A_{e}Effective cross sectional area of Core (m^{2}) 3) Saturation Flux Density, B_{s}(T) Saturation flux density is the maximum attainable flux density when a very high magnetic field is applied to a soft magnetic material as shown in the figure below. 4) Residual Magnetic Flux Density, B_{r}(T) This is the amount of residual magnetic flux density retained by the

core after the magnetic field is weakened and finally removed, as shown in the figure above. 5) Coercivity, H_{c}(A/m) This is the strength of the magnetic field whereby the residual flux

density becomes zero under the intensification in the opposite direction of the magnetic field, as shown in the figure above. 6) Loss Factor, tanδ The loss factor can be split up into three parts as tanδ= tanδh+

tanδe+ tanδr Where tanδh Hysteresis loss tanδe Eddy-current loss tanδr Residual loss 7) Relative Loss Factor, tanδ/µ This is the amount of loss per unit permeability and is defined as

below. tanδ/µ_{i}(for magnetic material) tanδ/µ_{e}(where gaps are added to the magnetic circuit) 8) Hysteresis Material Constant, ηB (10-^{6}/mT) Hysteresis material constant characterizes the change of the

hysteresis loss of the material when the flux density is increased. ηB = Δtanδ µeΔB Where tanδ Loss factor µe Effective Permeability B Magnetic Flux Density (mT)

9) Temperature Coefficient, α_{µ}(K-^{1}) This is the fractional difference of permeability per oK in a

temperature range from T1 to T2 (T2 >T1) α_{µ}= (µ2-µ1)/µ1(T2－T1) Where µ_{1}Permeability at temperature T1 µ_{2}permeability at temperature T2 10) Relative Temperature Coefficient, α_{µ}_{r}(K-^{1}) This is the temperature coefficient per unit permeability α_{µ}_{r}= (µ2-µ1)/µ1^{2}(T2－T1) The temperature coefficient of an actual core is obtained from below α_{µ}= a_{µ}_{p}x µ_{e}11) Curie Temperature, Tc (℃) The Curie temperature Tc is defined as the temperature at which the magnetic core changes from the ferromagnetic to the paramagnetic state. 12) Resistivity, ρ (Ωm) This is the electrical resistance per unit length and cross-sectional

area of a magnetic core. 13) Density, d (kg/ms^{3}) This is the weight per unit volume of a magnetic core. d = W/V Where： W Weight of magnetic core (kg) V Volume of magnetic core (m^{3}) 14) Power Loss density, Pc (kw/m^{3}) Power loss denotes the loss under a magnetization condition featuring

a high frequency and a large amplitude. Operating magnetic flux density is generally expressed for a sinusoidal wave as below. Bm = E/(4.44f NAe) Where Bm Peak value of magnetic flux density (T) EV oltage effective value applied to test coil (V) f Frequency (Hz) N Number of coil turns Ae Effective cross-sectional area of core (m2) 15) Inductance Factor, AL (nH/N2) AL= L/N2 Where AL Self-inductance of coil with core (H) N Number of coil turns The inductance factor is generally united by 10-9H/N2 (nH/N2)

1) µ_{i}(Initial Permeability) µ_{i}= 1 lim ΔB µ_{0}(ΔH->0) (ΔH) µ_{0}(4πx10-^{7}H/m) 2) Toroidal Permeability µ = 1000Ll_{e}4πN^{2}A^{e}Where L Inductance(µH) µ Permeability N No of Turns A_{e}Effective cross sectional area (cm^{2}) l_{e}Effective Magnetic Path Length (cm) 3) µ_{e}Effective Permeability µ_{e}= 1000L 4πN^{2}Σ = l A Where L Inductance(µH) µ Permeability N No of Turns l Effective Magnetic Path Length (cm) A Effective cross sectional area (cm^{2}) 4) µ_{e}AL Inductance Factor A_{L}= L/N^{2}A_{L}: nH/N^{2}Inductance Factor Where L Inductance N No of Turns 5) Magnetic Field Strength H = 0.4πNl l^{e}Where H Magnetic Force(Oe) N No of Turns l Current(A) l_{e}Effective Magnetic Path Length (cm)

6) Peak Ac Flux Density B_{max}= E_{rms}10^{8}4.44fA^{e}N Where B Peak Ac Flux Density (Gauss) F Frequency (Hz) A_{e}Effective Cross-Sectional Area cm^{2}E_{rms}RMS Voltage (V) 7) L_{e}Effective Magnetic Path Length of Toroidal Cores l_{e}= π(OD_ID)_{ln }OD (ID) Where OD Outer Diameter (cm) ID Inner Diameter (cm) l_{e}Effective Magnetic Path Length (cm) 8) A_{e}Effective Cross-Sectional Area A_{e}= (OD_ID) xHtXK 2 Where OD Outer Diameter (cm) ID Inner Diameter (cm) HT Height (cm) K Coefficent Relative to the Shape of the edges (cm) 9) Quality Factor (Q) Q = ωL R_{dc}+R_{ac}+R_{cd}Where Q Quality Factor L Inductance (H) ω=2πf Frequency (Hz) R_{dc}Dc Winding Resistance (Ω) R_{ac}Resistance due to core loss (Ω) R_{cd}Resistance due to dielectric loss of Winding (Ω)

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