Electronics Handbook/Components/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

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

Summary

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