Transformer Types

Transformer Types
If the voltage output terminal is greater than the voltage that is changed, the transformer is used to function as Raising the voltage. Conversely if the voltage output terminal is smaller than the converted voltage, the transformer is used to function as lowering voltage. Thus, the transformer (transformer) can be divided into two, namely step-up transformer and step-down transformer.
Step-up transformer is a transformer that serves to raise the AC voltage.


This transformer has the characteristics:
a. the number of primary winding less than the number of secondary windings,
b. primary voltage is smaller than the secondary voltage,
c. strong primary current is greater than the stronger secondary flow.

Step-down transformer is a transformer that serves to lower the AC voltage.


This transformer has the characteristics:
a. the number of primary winding greater than the number of secondary windings,
b. primary voltage is greater than the secondary voltage,
c. strong primary current is smaller than strong secondary flows.

Ideal Transformer
Large voltages and currents depend on the number of transformer winding. Large voltage proportional to the number of loops. Greater the number of winding voltages generated greater. This applies to primary and secondary winding. The relationship between the number of primary and secondary windings with a primary voltage and secondary voltage formulated


Said transformer is ideal if there is no energy lost to heat, when the amount of energy into the primary coil equal to the amount of energy that came out in the secondary coil. The relationship between the voltage with a strong current in the coil primary and secondary formulated


If both sides are divided by t, obtained by the formula



In this case the factor (V × I) is the power (P) transformer.
Based on the above formulas, the relationship between the number of primary and secondary windings with a strong primary and secondary currents can be formulated as


Thus for an ideal transformer will apply the following equation.

By:
Vp = Primary voltage (input voltage = Vi) with units of volts (V)
Vs = secondary voltage (output voltage = Vo) with units of volts (V)
Np = number of primary winding
Ns = number of secondary winding
Primary current Ip = strong (strong input current = Ii) with the unit ampere (A)
Is = secondary current strength (strong currents output = Io), with units of amperes (A)