What are equations for voltage ratio (primary/secondary) of...
- the action of a transformer with a turn ratio (turns primary/turns secondary) of X/Y and a toroidal core of cross-sectional radius R and inner diameter D? (fig. 1)
- Cylindrical core transformer of turn ratio (X/Y) and core diameter D (fig.2).
Optimally these should account for composition of core. Also, please let me know if I'm missing any parameters.
Many thanks in advance