A full-wave bridge rectifier consists of:

Question

Question

This question was previously asked in

RRB ALP Electronics Mechanic 21 Jan 2019 Official Paper (Shift 3)

Answer 1

Concept:

A bridge rectifier is of two types:

1) Bridge Type Full Wave Rectifier

2) Center-Tap Full Wave Rectifier

A Bridge type full wave rectifier contains 4 diodes as shown:

F1 S.B Madhu 20.01.20 D3

Working:

For a positive half cycle, two diodes will act as short-circuit as shown

Rectifier

Similarly, for a negative half cycle, the other two diodes will be short-circuited resulting in a full-wave rectified output.

Center-Tap Full Wave Rectifier:

It consists of two diodes as shown:

Diagram DMRC

1ϕ full wave rectifier

The average output voltage is:

\(V_{o(avg)}={2V_m\over \pi}\)

The RMS output voltage is:

\(V_{o(RMS)}={V_m\over \sqrt{2}}\)