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SWAMISWAMI SACHCHIDANANDSACHCHIDANAND POLYTECHNICPOLYTECHNIC COLLEGECOLLEGE, , VISNAGAR VISNAGAR

Guided by:-Miss.H.V.Momin

Prepaid by :-

Oza Akshay V.Modi Vishal J. Panchal Rajesh P.Mansuri Sohil I.Patel Dhruv A.

Half-Wave & full wave Half-Wave & full wave Rectifier with filter Rectifier with filter

circuit circuit

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Oza Akshay 106500309046Oza Akshay 106500309046 Modi vishal 106500309047Modi vishal 106500309047 Panchal Rajesh 106500309063Panchal Rajesh 106500309063 Mansuri Sohil 106500309049Mansuri Sohil 106500309049 Patel Dhruv 106500309071Patel Dhruv 106500309071

RectifierRectifier

The rectifier converts the ac input The rectifier converts the ac input voltage to a pulsating dc voltage voltage to a pulsating dc voltage There are two types of rectifier.There are two types of rectifier.

1.1. Half-wave rectifierHalf-wave rectifier

2.2. Full-wave rectifierFull-wave rectifier

. .

Half-Wave RectifierHalf-Wave Rectifier

When a diode is connected When a diode is connected to a source alternating voltage, it to a source alternating voltage, it will be of alternately forward-biased, and then will be of alternately forward-biased, and then reverse-biased, during each cycle of the AC reverse-biased, during each cycle of the AC sine-wave. sine-wave.

When a single diode is used in a rectifier When a single diode is used in a rectifier circuit, current will flow through the circuit only circuit, current will flow through the circuit only during one-half of the input voltage cycle. during one-half of the input voltage cycle.

For this reason, this rectifier For this reason, this rectifier circuit is called a half-wave rectifier. The output circuit is called a half-wave rectifier. The output of a half-wave rectifier circuit is pulsating DC.of a half-wave rectifier circuit is pulsating DC.

Half wave rectifier Half wave rectifier

Wave form of Half wave rectifierWave form of Half wave rectifier

Full-wave RectifierFull-wave Rectifier

The output of a The output of a full-wave rectifier is full-wave rectifier is driven by both the driven by both the positive and positive and negative cycles of negative cycles of the sinusoidal the sinusoidal input, unlike the input, unlike the half-wave rectifier half-wave rectifier which uses only which uses only one cycle.one cycle.

Full wave rectifier Full wave rectifier

Wave form of full wave rectifier Wave form of full wave rectifier

Power SuppliesConsist of:

1. Transformer – steps ac voltage up or down.

2. Rectifier Diodes – change ac to “bumpy” dc.

3. Filter Network – includes capacitors and inductors, smooths out the bumps.

4. Voltage Regulator – keeps the voltage constant.

5. Protection – usually a crowbar circuit.

Types of filter circuits:-

1. Shunt capacitor filter2. Series inductor filter3. Choke input LC filter4. Capacitor input LC filter and5. Π filter

Shunt capacitor filter

Series inductor filter

Choke input LC filter

Capacitor input LC filter

Π filter

Important Concepts

• Half Wave Rectifier:– Simplest.– Hard to filter well.

• Full Wave Rectifier:– Easier to filter.– Requires transformer with center-tap.– Transformer secondary must be twice

intended voltage.

thank thank you…………….you…………….