Question

Write the comparison center tapped between full wave rectifier and bridge rectifier.

Answer 1

We can explain the difference between center tapped full wave rectifier and a bridge rectifier by considering various factors such as use of transformer, the number of diodes used for converting AC into DC, size of transformer used, peak inverse voltage, Transformer utilization factor and efficiency.

Complete answer:
A center tapped full wave rectifier is a rectifier which uses a center tapped transformer to convert the complete AC signal into DC signal. The main advantage of a center tapped full wave rectifier is that it allows electric current during both positive and negative half cycles of the input AC signal.

A bridge rectifier which uses four or more diodes in a bridge circuit configuration to convert AC signal into DC signal. The main difference between bridge rectifier and center tapped full wave rectifier is that, bridge rectifier produces almost double the output voltage using the same secondary voltage.

The brief comparison between center tapped full wave and bridge rectifier is as follows :

Factors	Center tapped full wave rectifier	Bridge rectifier
Definition	Center tapped rectifier as the name suggests requires a center tapped transformer (secondary winding).	No center tapped transformer is required in a bridged rectifier.
Number of diodes	Center tapped rectifier uses only two diodes in its circuit.	Bridge rectifier uses four diodes in its circuit.
Peak inverse voltage	The peak inverse voltage (PIV) of the diode in the center tapped full wave rectifier is twice the transformer secondary terminal voltage.	Peak inverse voltage PIV of the diode is equal to the transformer secondary voltage. Thus this type of rectifier can be used for high voltage application.
Transformer Utilization Factor (TUF)	The transformer utilization factor (TUF) is equal to 0.672	The transformer utilization factor (TUF) is equal to 0.810 for the bridge rectifier.
Voltage drop across diodes	Voltage drop across the two diodes of the center tapped rectifier is less when compared to bridge rectifier.	The voltage drop across the 4 diodes of the bridge rectifier is more than the voltage drop across the center tapped rectifier.
Size Of Transformer	The transformer required in the bridge rectifier is smaller than that required in the center tapped rectifier in terms of kVA rating.	The transformer required in the bridge rectifier is smaller than that required in the center tapped rectifier in terms of kVA rating.
Economic efficiency	Center tapped transformer is economically efficient since it uses only two diodes in its circuit.	Bridge rectifier is economically inefficient since it uses four diodes in its circuit.

Note: We should write the differences in tabular form for better understanding and also give short descriptions about center tapped full wave and bridge rectifiers. Write at least 6 points of differences. Do not explain given rectifiers with the help of a diagram. We can also use the bullets for writing the differences.