*The output of rectifier has both dc and ac components. The performance of rectifiers are evaluated using the following*

*parameters:*

*The average value of output (load) voltage given as V*_{dc}

*The average value of output (load) current given by I*_{dc}

*The output dc power given by P*_{dc}= V_{dc}I_{dc}

*The rms value of output voltage given as V*_{rms}

*The rms value of output current given as I*_{rms}

*The output ac power given by Pac = V*_{rms}I_{rms}

*The efficiency or rectification ratio of a rectifier given by**The output voltage consists of two components an ac component and a dc component. The effective or (rms) value of the ac component of output voltage is given by*

*The form factor which is a measure of the shape of the output voltage is given by*

The ripple factor which is a measure of the ripple content is given by

By substituting the equation for the effective value of the qac component of the output voltage into the ripple factor equation, we can express the ripple factor as

*The transformer utilization factor is defined as*

**where Vs and Is are the rms voltage and current of the transformer secondary**

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**Controlled Rectifiers**
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**Performance Parameters (Input AC side)**
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