Transformer Design Calculation Excel Site

Excel forces you to understand the relationship between flux density, copper fill, and thermal rise. And that understanding is far more valuable than any black-box software.

For 60VA, select an EI-48 core (Area ≈ 3.6 cm²). Tpv recalc: 1/(4.44 50 1.2*0.00036) ≈ 10.4 turns/volt. Primary turns: ~2,400. Secondary turns: 12 * 10.4 * 1.05 ≈ 131 turns. transformer design calculation excel

Note: Add 2-5% to the secondary turns to compensate for voltage drop under load. Excel forces you to understand the relationship between

Once Tpv is known, the turns are straightforward. the turns are straightforward.