What is the principle of a rectifier?

Principle of rectifier: The rectifier is a device that is capable of converting an alternating current into a unidirectional or pulsating form of direct current. The process of conversion of alternating currents into direct currents is known as rectification.

What is the theory of full-wave rectifier?

Theory. A Full Wave Rectifier is a circuit, which converts an ac voltage into a pulsating dc voltage using both half cycles of the applied ac voltage. It uses two diodes of which one conducts during one half cycle while the other conducts during the other half cycle of the applied ac voltage.

What is the theory of bridge rectifier?

Bridge Rectifiers are circuits that convert alternating current (AC) into direct current (DC) using diodes arranged in the bridge circuit configuration. Bridge rectifiers typically comprise of four or more diodes. The output wave generated is of the same polarity irrespective of the polarity at the input.

How does a rectifier convert AC to DC?

Many circuits with this technology are built with a ​bridge rectifier​. Bridge rectifiers convert AC to DC using its system of diodes made of a semiconductor material in either a half wave method that rectifiers one direction of the AC signal or a full wave method that rectifies both directions of the input AC.

What is application of rectifier?

The primary application of the rectifier is to derive DC power from AC power. Rectifiers are used inside the power supplies of almost all electronic equipment. In power supplies, the rectifier is normally placed in series following the transformer, a smoothing filter, and possibly a voltage regulator.

Why diode is used in rectifier?

In simple words, a diode allows current in just one direction. This unique property of the diode allows it to act sort of a rectifier by converting an alternating current to a DC source.

What is ripple factor?

The ripple factor, defined as the ratio of the rms value of the ac component to the dc component, increases with the firing angle. From: Control in Power Electronics, 2002.

What is the formula of ripple factor?

Calculation : Theoretical calculation (without filter) : Ripple factor = √(Vrms/Vdc)2-1=√(Vm/2/Vm/Π)2-1 = 1.21. Effieiency = (Vdc/Vrms)2 = (Vm/Π/ Vm/2)2=0.405X100= 40.5%.

Why 4 diodes are used in rectifiers?

The bridge rectifier consisting of four diodes enables full wave rectification without the need for a centre tapped transformer. The bridge rectifier is an electronic component that is widely used to provide full wave rectification and it is possibly the most widely used circuit for this application.

What is ripple and ripple factor?

Ripple factor is defined as. The ratio of RMS value of an alternating current component in the rectified output to the average value of rectified output. The ripple factor is denoted as γ. It is a dimensionless quantity and always has a value less than unity.

What is rectifier efficiency?

Rectifier efficiency is used as a parameter to determine the efficiency of the rectifier to convert AC into DC. It is the ratio of DC output power to the AC input power. The rectifier efficiency of a full-wave rectifier is 81.2%.

What are types of rectifier?

Rectifiers are mainly classified into two types as:

  • Uncontrolled Rectifier.
  • Controlled Rectifier.