smps transformer design calculation
_{in} \times \sqrt{2}\) (for sine wave) \(V_{in} = 230V\), so: \[ V_{peak} = 230V \times \sqrt{2} \approx 325V \] Assuming \(B_{max} = 0.3 T\), \(f = 100 kHz\): \[ A_{c} = \frac{325V}{4.2 \times 10^5Hz \times 0.3 T} \approx 2.58 \times 10^{-3} m^2 \] which