Practical Electronics/Transformers

Transformer

Transformer is an electromagnetic component consists of two coils wrap around a square magnetic material that has the capability of Step up, Step down and Buffer the voltage

Characteristic

$V_{S}=V_{P}{\frac {N_{S}}{N_{P}}}$

• Step Up Voltage when ${\frac {N_{S}}{N_{P}}}>1$
• Step Down Voltage when ${\frac {N_{S}}{N_{P}}}<1$
• Buffer Voltage when ${\frac {N_{S}}{N_{P}}}=1$

Summary

Component	Transformer
Symbol
Construction
${\frac {V_{o}}{V_{i}}}$	${\frac {V_{o}}{V_{i}}}={\frac {N_{2}}{N_{1}}}$
Function	Step Up $V_{o}>V_{i},N_{2}>N_{1}$ Step Down$V_{o}<V_{i},N_{2}<N_{1}$ Buffer $V_{o}=V_{i},N_{2}=N_{1}$

Reference

• Transformer