# Electronics - Diodes and Applications - Discussion

Discussion Forum : Diodes and Applications - General Questions (Q.No. 2)
2.
Which type of transformer is required to create a 180 degree input to a rectifier?
center-tapped secondary
step-down secondary
stepped-up secondary
split winding primary
Explanation:
No answer description is available. Let's discuss.
Discussion:
10 comments Page 1 of 1.

Snehanjali Basa said:   1 decade ago
Transformer having two winding. At the secondary winding, one common terminal is divided the winding into two equal half winding. The 1st half for 0-90 degree (+ve half cycle) and another half for 90-180 degree (-ve half cycle). And that common terminal is called as center tapped terminal. Like that centered tapped transformer is required for 180 degree input to rectify.
(1)

ABAR -4744 said:   5 years ago
@Snehanjali basa.

First half(0-180)..
2nd half (180-390).
Center tapped (common terminal help us to split the wave cycles). If don't use this tapp the output will be sinewave.

In center tapped transformer, it gives both positive and negative amplitudes with respect to the common terminal. So this will become 180 degree i/p to the rectifier.

The centre tap will act as a common terminal between the diode hence we will get a 180 degree input to a rectifier.

Centre tap transmformer having three terminal one common terminal so it gives 180 degree input to rectfier.

NAINA said:   10 years ago
CENTER TAP TRANSFORMER WORKS FOR ONLY HALF CYCLE OF FULL WAVE THAT IS 180.

Balwindwe singh said:   1 decade ago
If we does not use common terminal then what will be the phase shift.

Amarjit singh said:   1 decade ago
180 degree phase shift takes place due to the common terminal.