Transformer Design Calculation Excel May 2026

Transformer Design Calculation Excel

1. Power Rating ($P_out$)

Part 3: Calculation Formulas (Paste These into Column C)

Phase I: Core Design and Magnetic Circuit

Row F – Total loss & performance

F1: Total loss = 0.73+0.675+0.27 = 1.675 W F2: Output power = 12 1.5 = 18 W F3: Efficiency = 18/(18+1.675) = 91.5% F4: Regulation = (IpRp cosφ + IsRs)/Vs * 100 (assume resistive load cosφ=1) = (0.087 96 + 1.5*0.30)/12 * 100 = (8.35+0.45)/12 *100 ≈ 73% → This is too high! → Means our wire size is too thin (Rp high) or we need larger core to reduce turns.

. In Excel, this can be calculated as =(Voltage * Current) / 1000 . transformer design calculation excel