0
\$\begingroup\$

I am studying transformers and I am not completely understanding a basic detail, but it is annoying me.

When we draw the equivalent circuit of a transformer, why is the secondary voltage referred to the primary written as \$V_{2}'=\frac{N_1}{N_2}V_2\$ ?

\$\endgroup\$
2
  • \$\begingroup\$ What do V2 and V'2 represent? \$\endgroup\$ Mar 18, 2017 at 16:49
  • \$\begingroup\$ \$V_2\$ is the voltage on secondary and \$V_{2}'\$ is the voltage \$V_2\$ referred to the primary. \$\endgroup\$ Mar 18, 2017 at 16:54

1 Answer 1

2
\$\begingroup\$

These currents --- in primary or secondary --- develop a flux in the core that is common to all windings. The response of each winding to the common flux is proportional to #turns in that winding. Thus a transformer is a self-regulating machine, with back-electromotive-force (back EMF) providing the negative feedback.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.