Electronics Fundamentals/Electromagnetic Devices/Transformer

Transformer

A transformer is an electronic component that has the capability to increase, decrease or buffer voltage

Transformer is constructed from two coils wounded on two sides of a square

\frac{V_{o}}{V_{i}} = \frac{N_{2}}{N_{1}}

From above,

V_{o} = V_{i} \frac{N_{2}}{N_{1}}

Step Up Voltage

V_{o} > V_{i}

when

N_{2} > N_{1}

Step Down Voltage

V_{o} < V_{i}

when

N_{2} < N_{1}

Buffer

V_{o} = V_{i}

when

N_{2} = N_{1}