Students will first simulate and build the rectifier to gain an understanding of the purpose of a rectifier. Diodes overview diodes are mostly used in practice for emitting light as light emitting diodes, leds or controlling voltages in various circuits. The capacitors are used to eliminate the filters and harmonics. Since scr use silicon for its construction so it is called silicon controlled rectifier.
The principle behind the diode is similar to a valve or a gate, which lets electricity flow only in one direction simple. This is the simplest rectifier that uses a single diode and a load resistor. Connect the primary side of the transformer to ac mains and the secondary side to rectifier input. It consists of two half wave rectifiers connected to a common load.
The output voltage 15v of bridge rectifier is regulated to 12dc by using voltage regulators 7812 and 7912. Rectifier applications handbook reference manual and design guide hb214d rev. Full wave rectifier with and without filters student box office. A fullwave rectifier converts the whole of the input waveform to one of constant polarity positive or negative at its output.
Figure 3 shows each circuit with associated data on peak inverse voltage, ripple voltage and current, rectifier suge current, and interpretation of symbols. Rectifier may be defined as an electronic device used to convert ac voltage or current into unidirectional voltage or current. Lab manuals for etce dedartment womens polytechnic. Finally, a voltage regulator is used to maintain a constant output from the power supply over a limited range of input. Connect the circuit as shown in the circuit diagram. It is widely used as switching device in power control applications. To plot voltampere characteristics of germanium and silicon pn junction diode.
It will also reduce the harmonic contents of the rectified waveform and reduce the requirement on the smoothing filter needed to reduce the ripple in the rectified waveform. In order to produce steady dc from a rectified ac supply, a filter circuit is required. During the negative half cycle, the diode is reverse biased and it is equivalent to an. Threephase ac power electronics college of engineering. To study ujt trigger circuit for half wave and full wave control. Ripple factor can be defined as the variation of the amplitude of dc direct current due to improper filtering of ac power supply. A practical half wave rectifier with a resistive load is shown in the circuit diagram. How rectifier circuits work in electronics dummies. The rectifier is a diode circuit that converts ac to pulsating dc. A threephase ac power electronics xi about this manual this manual, threephase ac power electronics, introduces the student to the student to power electronic circuits rectifiers and inverters used to perform acdc power conversion in threephase circuits. Lab manual power electronics ee460 page 5 of 80 lab 1. Lab manual exp 8 rectifier electrical circuit analysis. The conversion of ac into dc is called rectification.
Full wave rectifierbridge rectifiercircuit diagram with. Basic electronics lab p242 manual school of physical sciences national institute of science education and research bhubaneswar. Full wave rectifier finds uses in the construction of constant dc voltage power supplies, especially in general power supplies. To study vi characteristics of scr and measure latching and holding currents. On the other hand, fullwave rectifier improves on the conversion efficiency of ac power to dc power. The output from the rectifier is applied to a filter, which is used to reduce the variations in the rectifier output signal. A typical waveform of a fullwave rectifier is shown in fig. The rectifier circuit, which is typically made from a set of cleverly interlocked diodes, converts alternating current to direct current. Starting of a 5 hp 240v dc motor with a threestep resistance starter 39 labview. Do not take any item from the lab without permission. Using a cro, measure the maximum voltage v m of the ac input voltage of the rectifier and ac voltage at the output of the rectifier. Design the singlephase power factor correction pfc circuits to draw sinusoidal currents at unity power factor. Conventions the following conventions are used in this manual.
A bridge rectifier with an efficient filter is ideal for any type of general power supply applications like charging a battery, powering a dc device like a motor, led etc etc. Introduction to electronics ii dedication human beings are a delightful and complex amalgam of the spiritual, the emotional, the intellectual, and the physical. The output tracks the input during positive half cycle. Lab no 06 full wave bridge rectifier rectifier electrical network. For half wave rectifier with capacitor filter find line and load regulation and ripple factor. Options directs you to pull down the file menu, select the page setup item, and select options from the last dialog box. Rings and necklaces are usual excellent conductors of electricity.
One of the most common uses for rectifier diodes in electronics is to convert household alternating current into direct current that can be used as an alternative to batteries. The lab report should be segmented in to the following parts. It consists of three diodes connected back to back with gate connection or two complementary transistor connected back to back. The lab notebook does not need to repeat everything from the manual verbatim, but it does need. To study singlephase half wave controlled rectified with i resistive. After completion of experiment, return the bread board, trainer kits, wires, cro probes and other components to lab staff. Assembly and operation manual for heathkit io102 oscilloscope ca 1971 1974 topics. Power electronics lab 2010 f f a silicon controlled rectifier scr is a four layer, three terminals and three junction device, which is basically a rectifier with a control terminal called gate. Do not wear loosefitting clothing or jewellery in the lab. Half wave rectifier vin 2 0 sin0 220 50 rl 5 0 500 rs 2 1 10 l1 1 0 2000 l2 3 0 20 k1 l1 l2 0. To plot vi characteristic of junction diode and zener diode.
Two continuously variable dc regulated power supplies of 01v and 030v. Basic electronics lab manual school of physical sciences national institute of science education and research bhubaneswar. Reading graymark manual pages 2236 procedure 1 construction perform steps on page 23 of your graymark manual. To simulate three phase controlled rectifier circuit for r load and r l load in matlab ii. The course begins with the study of threephase diode rectifiers. The unidirectional conduction property of semiconductor diodes junction diodes is used for rectification. Electronic devices can convert ac power into dc power with high efficiency.
Observation book and lab record should be carried to each lab. Single phase half wave rectifier a single phase halfwave rectifier is the simplest type and normally is not used in industrial applications. To obtain the vi characteristics of scr silicon controlled rectifier. To observe the output waveform of half wave rectifier with and without filter. Singlephase controlled fullwave rectifier with r and rl loads. Half wave rectifier with and without filters student box office. Then, students will use labview to explore the individual components of the rectifier in order to visualize and understand how these components limit its operating range. Lab 2 half wave rectifiers objective to study the characteristics and operation of half wave rectifiers and filter circuits.
This lab guides students in building a fullwave bridge rectifier and in exploring the vi characteristic of a diode. Some loads require high currents, others high volta. In this experiment, we will study three different types of rectifiers with capacitor filter. Know the operation of a singlephase diode rectifier with resistive and inductive loads and their performance parameters. Symbol description danger indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury. To understand the technique available to control the speed of dc and universal motor. During the positive half cycle, the diode is forward biased and it conducts and hence a current flow through the load resistor. This icon denotes a tip, which alerts you to advisory information. Limiting circuit halfwave rectifier fullwave rectifier. Visintini elettra synchrotron light laboratory, trieste, italy abstract in particle accelerators, rectifiers are u sed to convert the ac voltage into dc or lowfrequency ac to supply loads like magnets or klystrons. Some loads require high currents, others high volta ges, and others both high current and high voltage. Answer the questions listed in the thoughtful questions section in the lab manual. Be sure of location of fire extinguishers and first aid kits in the laboratory.
To find cutin voltage for germanium and silicon pn junction diode. Besides the general rules above, specific guidelines for this lab. Pay careful attention to figure 40 on hold to solder diodes to a printed circuit board. The simple halfwave circuit minimizes rectifier cost, but suffers from poor transformer utilization, which results in a need for more copper to keep heating reasonable, and. Lab manual full wave rectifier free download as pdf file. Single phase full wave diode bridge rectifier with lc filter 31 8. Electrical simulation grietelectrical and electronics. While halfwave and fullwave rectifiers deliver a form of dc output. Diode has unidirectional property hence suitable for rectifier. Al ameen engineering college,kulappully s7 power electronics lab department of electrical and electronics experiment 4 simulation of three phase controlled rectifier converter aim. In the case of a hard electron tube, this value is not.
To rectify the ac signal and then to find out ripple factor and percentage of regulation in half wave rectifier with and without capacitor filter. No name range value quantity 1 transformer 230v 0 9v 1. Schematic, manual, heathkit, oscilloscope international rectifier manuals 3,547 3. After completion of this lab course the student could be able to. Design a half wave rectifier using tinapro and observe its output on a virtual oscilloscope.
R, thig is the forward resistance of the rectifier. Lab no 06 full wave bridge rectifier free download as pdf file. Intentional misconduct will lead to expulsion from the. Keep the labs clean at all times, no food and drinks allowed inside the lab. A rectifier is an electrical device that converts alternating current ac, which periodically reverses direction, to direct current dc, which flows in only one direction.