Before revision: Principles Ideal transformer equations By Faraday's law of induction: where is the instantaneous voltage, is the number of turns in a winding, dΦ/dt is the derivative of the magnetic flux Φ through one turn of the winding over time (t), and subscripts P and S denotes primary and secondary.
After revision: <div style="float:right; padding:1em; margin:0 0 0 1em; width:350px; border:1px solid; background:ivory;">Principles Ideal transformer equations By Faraday's law of induction: where is the instantaneous voltage, is the number of turns in a winding, dΦ/dt is the derivative of the magnetic flux Φ through one turn of the winding over time (t), and subscripts P and S denotes primary and secondary.