Rectifier
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This presentation introduces rectifiers and was presented by Md. Tanvir Hossain Tushar, a first year Applied Chemistry and Chemical Engineering student. It defines a rectifier as an electrical device that converts alternating current to direct current using diodes. The presentation discusses half-wave and full-wave rectifiers, the types of full-wave rectifiers, and common uses of rectifiers such as in DC power supplies, radio signal detection, and high voltage DC power transmission.
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The document describes a three-phase, full-wave rectifier circuit using 6 diodes arranged in a bridge configuration. The upper diodes (D1, D3, D5) form the positive group and conduct during the positive half cycles of the input voltage. The lower diodes (D2, D4, D6) form the negative group and conduct during the negative half cycles. Calculations are provided for the output voltage, current, power, ripple, efficiency and transformer utilization factor of the three-phase full-wave rectifier.
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If the input dc is a voltage source, the inverter is called a Voltage Source Inverter (VSI). One can similarly think of a Current Source Inverter (CSI), where the input to the circuit is a current source. The VSI circuit has direct control over ‘output (ac) voltage’ whereas the CSI directly controls ‘output (ac) current.
Inverter is a device which convert a DC input supply voltage into symmetric AC voltage of desired magnitude and frequency at the output side. It is also know as DC-AC converter.
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Diode
Diodes are semiconductor components that allow current to flow in only one direction. They have two terminals called the anode and cathode. Current can flow from the anode to the cathode but not in the reverse direction. When a forward bias is applied, the depletion region collapses and current can flow through the diode. When a reverse bias is applied, the depletion region expands and blocks current flow. Diodes are used in applications such as rectifiers, reverse current protection, logic gates, and voltage spike suppression.
Ac bridge and its application
The bridge uses for measuring the value of unknown resistance, inductance and capacitance, is known as the AC Bridge. The AC bridges are very convenient and give the accurate result of the measurement.The construction of the bridges is very simple. The bridge has four arms, one AC supply source and the balance detector. It works on the principle that the balance ratio of the impedances will give the balance condition to the circuit which is determined by the null detector.
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Ideal and practical inverter have sinusoidal and no-sinusoidal waveforms at output respectively.
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Inverter is a device which convert a DC input supply voltage into symmetric AC voltage of desired magnitude and frequency at the output side. It is also know as DC-AC converter.
Ideal and practical inverter have sinusoidal and no-sinusoidal waveforms at output respectively.
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Diode
Diodes are semiconductor components that allow current to flow in only one direction. They have two terminals called the anode and cathode. Current can flow from the anode to the cathode but not in the reverse direction. When a forward bias is applied, the depletion region collapses and current can flow through the diode. When a reverse bias is applied, the depletion region expands and blocks current flow. Diodes are used in applications such as rectifiers, reverse current protection, logic gates, and voltage spike suppression.
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The bridge uses for measuring the value of unknown resistance, inductance and capacitance, is known as the AC Bridge. The AC bridges are very convenient and give the accurate result of the measurement.The construction of the bridges is very simple. The bridge has four arms, one AC supply source and the balance detector. It works on the principle that the balance ratio of the impedances will give the balance condition to the circuit which is determined by the null detector.
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- AC can transmit power over longer distances with less power loss than direct current. AC voltages can be increased or decreased using transformers.
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This document discusses common diode applications and basic power supply circuits. It covers half-wave and full-wave rectifiers, and how they convert alternating current to pulsating direct current. Filters are described which reduce voltage and current ripples in rectified outputs. Voltage regulators are also summarized, which maintain a constant direct current output voltage despite varying loads. Zener diodes are commonly used for voltage regulation.
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This document discusses uncontrolled rectifiers, which use diodes to convert alternating current (AC) to direct current (DC). It covers the operation and analysis of single-phase half-wave and full-wave rectifiers, as well as three-phase rectifiers, with both resistive and inductive loads. Key points covered include the output voltage and current calculations, effects of adding capacitors or inductors, and how source inductance can affect rectifier operation. The objectives are to understand different rectifier circuits and analyze their performance parameters.
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1. The document discusses AC circuits and components including inductors, capacitors, resistors, and transformers.
2. Key concepts covered include inductive and capacitive reactance, impedance, phase relationships between voltage and current, and calculations of effective voltage and current.
3. Transformers can be used to step up or down voltages in an AC circuit by changing the ratio of turns in the primary and secondary coils. An ideal transformer does not lose energy.
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2) Key concepts covered include root mean square (RMS) voltage and current values, phase relationships between voltage and current, and reactance of inductors and capacitors.
3) Reactance is the opposition to current flow in inductors and capacitors, and depends on frequency - inductive reactance increases with frequency while capacitive reactance decreases.
AE UNIT II.ppt
This document discusses different types of rectifiers and filters used in analog electronics. It describes:
1) Half-wave and full-wave rectifiers, explaining how they work using diodes to convert AC to DC. Full-wave rectifiers provide higher output voltage and efficiency.
2) Capacitor input filters, which use a capacitor after the rectifier to filter ripple from the DC output. The capacitor charges during one half-cycle and discharges through the load during the other half-cycle.
3) Equations for calculating ripple factor and voltage. Larger capacitors and resistors reduce ripple. Capacitor filters are suitable for lighter loads due to poor regulation at higher currents.
Chapter 1.
This document provides information on different types of power supplies and their components. It discusses linear power supplies and their block diagrams. It explains the operation of half wave and bridge rectifiers. It also describes filters like L-type and Pi-type filters. Voltage regulators such as Zener diode regulators, series regulators, IC voltage regulators (IC 723), and IC 78XX/79XX regulators are explained. Finally, it provides a block diagram of an uninterruptible power supply (UPS) system.
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Rectifier
- 1. Welcome To My Presentation
- 2. The Rectifiers. Presented by Name: Md. Tanvir Hossain Tushar Id no: 16ACE049 Year: 1st Semester: 1st Department: Applies Chemistry & Chemical Engineering
- 3. Contents: Definition. Type of Rectifiers. Half Wave Rectifiers. Full wave rectifiers. Type of Full Wave Rectifiers. Use of Rectifiers.
- 4. Definition: A rectifier is an eleltrical device composed of one of more diodes that converts alternating current(AC) to direct current(DC).
- 5. Type of Rectifiers: Rectifier Half-wave Full wave
- 6. Half wave Rectifier: The rectifiers conduct current only during the positive half cycle of AC input signal & suppressed it during the half-cycle i.e. There is no current conduct and hence no voltage appears across the load.
- 7. Full Wave Rectifiers: Current flows through the load in the same direction for both cycles of the input AC voltage.
- 8. Type of Full Wave Rectifiers: Full wave rectifier are in two type
- 9. Use of Rectifier: DC power supplies. Radio signal or detectors. A source of power instead of generating current. High Voltage direct current power transmission system.
- 10. Thanks To All