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Wel-come SWAMI SACHCHIDANAND POLYTECHNIC COLLEGE, VISNAGAR Prepaid by :Oza Akshay V. Modi Vishal J. Panchal Rajesh P. Mansuri Sohil I. Patel Dhruv A. Guided by:Miss.H.V.Momin Half-Wave & full wave Rectifier with filter circuit Group Members Oza Akshay Modi vishal Panchal Rajesh Mansuri Sohil Patel Dhruv 106500309046 106500309047 106500309063 106500309049 106500309071 Rectifier The rectifier converts the ac input voltage to a pulsating dc voltage There are two types of rectifier. 1. 2. . Half-wave rectifier Full-wave rectifier Half-Wave Rectifier When a diode is connected to a source alternating voltage, it will be of alternately forward-biased, and then reverse-biased, during each cycle of the AC sine-wave. When a single diode is used in a rectifier circuit, current will flow through the circuit only during one-half of the input voltage cycle. For this reason, this rectifier circuit is called a half-wave rectifier. The output of a half-wave rectifier circuit is pulsating DC. Half wave rectifier Wave form of Half wave rectifier Full-wave Rectifier The output of a full-wave rectifier is driven by both the positive and negative cycles of the sinusoidal input, unlike the half-wave rectifier which uses only one cycle. Full wave rectifier Wave form of full wave rectifier Power Supplies Consist 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. 2. 3. 4. 5. Shunt capacitor filter Series inductor filter Choke input LC filter Capacitor input LC filter and 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 you…………….