RECTIFIER

Rectifier is device which converts alternating current (AC) into direct current (DC). The component used to convert AC signal to DC signal we know it very well! Yes your guess is right, Diode.

HALF WAVE RECTIFIER

Diode allow current to pass in one direction only so only positive cycle we get at output. Check circuit diagram and wave cycle to understand it better.

Half Wave Rectifier
Circuit – Half Wave

Here you can see the output is half of the input because diode can pass only positive signal, that’s why this type of rectifiers are named as “Half wave rectifiers”.

INPUT SIGNAL

Rectifier input
Input Sine Wave

OUTPUT SIGNAL

Half wave rectifier
Output – Half wave

So can we make a full wave rectifier circuit! Yes off course.

FULL WAVE RECTIFIER

As it named this type of rectifiers gives full wave output. There are two types of full wave rectifiers one is center-tap and other is bridge. Bridge rectifiers is commonly used because of its electrical characteristics (Ripple, RMS, PIV values or factor). Output of both the circuits will be same but there is difference in circuit diagram. In center tap we are using 2 diodes and in bridge we are using 4 diodes. See diagrams

FULL WAVE

Center Tap Rectifier
Center Tap

FULL WAVE BRIDGE RECTIFIER

We can use 4 diodes to make this or we can simply use bridge rectifier IC

Bridge Rectifier IC
Bridge IC

 

CIRCUIT

Bridge Rectifier Circuit
Bridge Circuit

OUTPUT

Full wave rectifier output
Output – Full Wave

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