# Equivalent model of my (real) transformer

I have created a transformer using a small cylinder (a tube) made of ferrite. The primary coil has $$\N_{1}=5\$$ turns of coil wire, while the secondary $$\N_{2}=50\$$ turns. According to a recent question of mine, a real transformer has an equivalent circuit like the following: Where:

• $$\L_{P}\$$ is the primary leakage inductance
• $$\R_{P}\$$ is the primary copper loss
• $$\R_{C}\$$ is the core losses due to eddy currents and hysteresis
• $$\L_{M}\$$ is the magnetization inductance
• $$\L_{S}\$$ is the secondary leakage inductance
• $$\R_{S}\$$ is the secondary copper loss

(taken from here)

My question is how can I determine each quantity in the above circuit, using $$\N_{1}, N_{2}\$$? If any additional information is needed please let me know (plus how can I calculate them, if it is not obvious). I don't seek to create an 100% precise model, just a circuit that works correctly (for example with an AC voltage source connected to the primary coil and a capacitor connected to the secondary coil the circuit must work like a band-pass filter).

• Thank you. What about $L_{M}, R_{C}$? Commented Dec 30, 2019 at 11:27