Tallinn University of Technology Department of Electrical Drives and Power Electronics Report on Exercises 2 on Electronics and Semiconductor Engineering Filters Student AAVB-41 Tallinn 2008 Exercise 2.1. Low-pass filter Circuit diagram Timing diagram and frequency responses High-pass filter Circuit diagram
Tallinn University of Technology Department of Electrical Engineering ELECTRONICS AND SEMICONDUCTOR ENGINEERING Exercises Linear circuits Student: xxxxxxxx Code: xxxxxx Group: xxxxxx TALLINN
Tallinn University of Technology Department of Electrical Drives and Power Electronics Report on Exercises 3 on Electronics and Semiconductor Engineering Diode circuits Student AAVB-41 Tallinn 2008 Exercise 3.1. Diode characteristics Fig. 3.1. Circuit diagram Timing diagram Output characteristic (forward bias only) Forward Bias Reverse Bias Umax, V UAC, Vrms Measured Calculated IA, Arms IA, Arms 0,5 0,35 0,006 0 1 0,64 0,1 0
Tallinn University of Technology Department of Electrical Drives and Power Electronics Report on Exercises 5 On Electronics and Semiconductor Engineering Op amps AAVB-41 Tallinn 2008 Exercise 5.1. Non-Inverting Voltage Amplifier Fig. 5.2. Diagrams of bandwidth versus gain Data table R1,k Measur ed Calculated
Tallinn University of Technology Department of Electrical Engineering Filters Report on Exercise 5 in AAR3320 Electronics and Semiconductor Engineering Student: Student Code: Study Group: Instructor: Prof. Valery Vodovozov Tallinn 1. RC filter R Vnoise 1000Ω 15 Vrms 11kHz
Tallinn University of Technology Department of Electrical Drives and Power Electronics Report on Electronics and Semiconductor Engineering OP AMPS Student AAAB-41 Tallinn 2011 Exercise 5.1. Non.Inverting Voltage Amplifier Fig . Circuit diagram Fig . Diagrams of bandwidth versus gain. Data table Measur
Tallinn University of Technology Department of Electrical Drives and Power Electronics Report on Exercises 2 Diodes Student ******* Code ****96 Group AAVB41 Tallinn 2012 2.1. Diode rectifier VD f = 9 kHz U=6V U = 19.7 V
Tallinn University of Technology Department of Electricl Power Engineering and Mechatronics Report on Exercises 1 on Power Electronics Single-Phase Half-Wave Rectifiers Tallinn 2017 Given parameters: Output voltage, Ud = 10 V Input frequency, fin = 50 Hz Load resistance, Rload = 70 kOhm Calculations: u1 10 I d= = =0.143 mA R L 70000 πUd 3.14∗10 US= = =22.2 V √2 √2 PIV =π∗Ud=3.14∗10=31.42V U max =√ 2∗U s=√ 2∗22.2=31.4 V Table 1. Value comparison table.
Tallinn University of Technology Department of Electricl Power Engineering and Mechatronics Report on Exercises 2 on Power Electronics Single-Phase Full-Wave Rectifiers Tallinn 2017 Given parameters: Output voltage, Ud = 10 V Input frequency, fin = 50 Hz Load resistance, Rload = 70 kOhm Calculations: u1 10 I d= = =0.143 mA R L 70000 πUd 3.14∗10 US= = =11.1 V 2 √2 2 √2 U Smax =U S∗√ 2=11.1∗√ 2=15.7 V PIV =2∗U smax =2∗15.7=31.4 V I max=I d∗√ 2=0
Tallinn University of Technology Department of Electricl Power Engineering and Mechatronics Report on Exercises 3 on Power Electronics Three-Phase Rectifiers Tallinn 2017 Given parameters: Output voltage, Ud = 10 V Input frequency, fin = 50 Hz Load resistance, Rload = 70 kOhm Calculations: M3 rectifier: u1 10 I d= = =0.143 mA R L 70000 2π Ud 2 π∗10 U ¿max = = =12.09 V 3 √3 3 √3 U ¿ max 12.09
INSTITUTO POLITECNICO DO PORTO INSTITUTO SUPERIOR DE ENGENHARIA DO PORTO CHEMICAL ENGINEERING DEPARTMENT PORTUGAL Marvin Üürike Tallinn University of Technology Faculty of Chemical and Materials Technology Department of Chemical Engineering Estonia ERASMUS PROJECT STUDY OF THE HEAT TRANSFER COEFFICIENT IN A HELICAL COIL Supervisor: Albina Ribeiro Porto 2015 2 Abstract The following work investigates overall heat transfer coefficient of a helical coil and how it changes in different situations. The variables investigated were flow rate inside a submerged helical coil and agitation of the bath.
I hope it proves useful. ix Introduction Modern electronic systems are increasingly digital: digital microprocessors, digital logic, digital interfaces. Digital logic is easier to design and understand, and it is much more flexible than the equivalent analog circuitry would be. As an example, imagine trying to implement any kind of sophisticated micro- processor with analog parts. Digital electronics lets the PC on your desk execute different programs at different times, perform complex calculations, and communicate via the World Wide Web. While the electronic world is nearly all digital, the real world is not. The temperature in your office is not just hot or cold, but varies over a wide range. You can use a thermometer to determine what the temperature is, but how do you convert the temperature to a digital value for use in a microprocessor- controlled thermostat
Electrical drives and power electronics TESTS · The synchronous machines are associated with the names of Ferraris · Name the scientists who first studied electrical phenomena Coulomb · The DC machines are associated with the names of Jacobi Henry · The leading companies in the world market of electrical drive engineering are Mitsubishi · · The electromagnetic torque is born in air gap · What kind of drives the majority of drive systems present low accuracy · The induction machines are associated with the names of Dolivo-Dobrovolsky Tesla · One of the first eletrical motors has been built by Jacobi · Electromagnetic efficiency is measured in tesla · Time constants are measured by ms s hours · Who is the author of the first electrical motor Henry · Which rectifier cannot be built without a transformer 3-phase midpoint
An Anode has positive potential and therefore collects electrons in the device. Cathode has negative potential and therefore emits electrons to anode. The symbol looks like an arrow that ponts from the anode to the cathode, and reminds that conventional current flows easily from the p side(anode) to the n side(cathode). BIASING. Forward biasing. If the current in a diode is too large, excessive heat will destroy the device. Even approaching the burnout current value without reaching it can shorten its life. Therefore manufacturer's data sheet specifies the maximum forward current, that diode can withstand. This average current IF is the rate a diode can handle up to the forward direction when used as a rectifier. Another entry of interest in the data sheet is the forward voltade drop UF(max) when the maximum forward current occurs. An usual diode has this value 0.7-2.0V. Diode conducts easily when forward biased. Reverse biasing
Tallinn University of Technology Department of Electrical Engineering Report on laboratory work 3 on General Course of Electrical Drive SERVO DRIVE (FESTO) Jüri Lina 666BMW Group M16 Variant 2 Tallinn 2014 1. Functional Diagram Component list: PC with Wmmemoc software SEC-AC-305 controller MTR-AC-55 servo motor with encoder External 24VDC power supply unit Test stand with slide and limit switches
Tallinn University of Technology Department of Electrical Drives and Power Electronics Report Diodes Tallinn 2011 + A VS RV V D -
Tallinn University of Technology Department of Electrical Engineering Report on laboratory work 4 on General Course of Electrical Drive INDUCTION MOTOR DRIVE (LUCAS-NÜLLE) Jüri Lina 666BMW Group M16 Variant 2 Tallinn 2014 1. Functional Diagram Nameplate data: Loading Machine SO3636- VDE 0530 IP:5 Is.KL: 6V 4 F U: 390V I: 4,4 A 4Nm/1.7k cos:
Vaata näited ja proovi ka muuta: http://math.hws.edu/TMCM/java/labs/xTurtleLab3.html http://math.hws.edu/TMCM/java/xTurtle/index.html Tutvu Tanel Tammeti näidetega: http://www.lambda.ee/images/7/77/Itsissejuhatus_calc.html http://www.lambda.ee/images/6/61/Itsissejuhatus_xmcssjscriptnaited.zip Tutvu e-Government Academy´ga: http://www.ega.ee/?lang=ee kuula helisalvestisi: http://www.tehnokratt.net/2006/06/09 Kas JavaScript on W3C standard? Student Value Correct Answer Feedback Response 1. Jah 0% 2. Ei 100% Score: 0/10 2. Milline allolevatest tagidest defineerib tabeli välja? Student Value Correct Answer Feedback Response 1.
Introduction to wave energy There are several possibilities to harvest different forms of energy from the sea. One of these options is the usage of waves for the generation of electricity. The devices needed to perform this task are called wave energy converters. Wave energy is indirect solar energy in twice. At first there is the wind, which is caused by variations in atmospheric pressure due to a differential solar heating of earth's surface by the sun. Different regions of pressure drives a force which rises a movement of atmospheric air masses that causes the earths wind system. If wind strikes over the surface of an open water, waves are induced. First they are very flat with only a low level of energy. When there is a long distance over the water on which wind can attack the small ones, they became bigger and bigger with a lot of energy inside them. Physics of wave energy To have a better understanding of the technical possibilities to harvest the energy
Manual regarding the Customs Treatment of Gifts and Items of Negligible Value Customs Procedures Branch Nenagh Date of Issue: December 2008 Date Updated March 2010 Queries: [email protected] VPN 63229/63234/63235
Tallinn University of Technology Department of Electricl Power Engineering and Mechatronics Report on Exercises 4 on Power Electronics AC Voltage Regulators Tallinn 2017 Given parameters: Output voltage, Ud = 20 V Input frequency, fin = 50 Hz Load resistance, Rload = 70 kOhm Calculations: U ¿ =2∗U out =2∗20=40V U max U rms = =17.09 V √2 Period = pulse width + delay => 10 ms = 5 ms + 5 ms Table 1. Control curve data.
Even if the reader is an expert, he or she will appreciate a comprehensive review of the field. The review has two parts. The first part is a more detailed background to the field. For example, if you are developing a medical device, the background would be a tutorial on the medical condition being treated by the device. The second part describes the prior art relevant to the problem, which means all of the existing technology and methods relevant to the problem, including the ways the problem is dealt with now. The review can include commercial products, academic journal articles and theses, and patents. The technical review will likely have many citations to the source of the information with citations listed in the Reference section. Citations and references should follow ASME, IEEE or APA style.
The following are some examples of applications for which particular attention must be given. This is not ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses listed may be suitable for the products: ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ • Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ or uses not described in this manual. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ • Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ equipment, amusement machines, vehicles, safety equipment, and installations subject to separate
Intragenomic Profiling Using Multicopy Genes: The rDNA Internal Transcribed Spacer Sequences of the Freshwater Sponge Ephydatia fluviatilis Liisi Karlep, To~nu Reintamm, Merike Kelve* Department of Gene Technology, Tallinn University of Technology, Tallinn, Estonia Abstract Multicopy genes, like ribosomal RNA genes (rDNA), are widely used to describe and distinguish individuals. Despite concerted evolution that homogenizes a large number of rDNA gene copies, the presence of different gene variants within a genome has been reported. Characterization of an organism by defining every single variant of tens to thousands of rDNA repeat units present in a eukaryotic genome would be quite unreasonable
Advanced Communications Function ACH Automated Clearing House ACIAS Automated Calibration Interval Analysis System ACIS American Committee for Interoperable Systems ACK Acknowledgment ACL Access Control List + Asynchronous Connection-Less (link) ACM Association for Computing Machinery Audio Compression Manager [Microsoft] ACMS Application Control Management System ACP Ancillary Control Program + Auxiliary Control Process ACPI Advanced Configuration and Power Interface ACR Allowed Cell Rate ACROSS Automated Cargo Release and Operations Service System ACS Access + Access Control Set + Access Control System + * Advanced Computer System [IBM] + Anti Curl System + Asynchronous Communication Server ACSS Audio Cascading Style Sheets ACTLU Active Logical Unit ACTPU Active Physical Unit ACTS Automated Computer Time Service ACTT Advanced Communication and Timekeeping Technology [Seiko] ACU Automatic Calling Unit
Modulus Temperature Hoop stress Variation Ring Bending Strain Design Life Creep Toxicity & Taint Stiffness Abrasion Resistance Chemical Resistance Ultraviolet Resistance Modulus Published as Strain rate & loading 2200MPa at 20ºC changes modulus (instantaneous) values Resin properties Value determined change modulus values by ASTM test Modulus affects Standard dog wavespeed in surge bone test events specimen Modulus important in Fixed strain rate buried pipeline design Modulus is needed to Modulus values at determine deflection other temperatures and buckling from and design life are design loads required for design
research question, we have a specification error. In other words, the construct implied in the survey question differs from the intended construct that should be measured. This is also referred to as a measurement that has low construct validity. As a result, the wrong parameter is estimated and the research objective is not met. A clear example of a specification error is given by Biemer and Lyberg (2003, p. 39). The intended concept to be measured was “…the value of a parcel of land if it were sold on a fair market today.” A potential operationalization in a survey question would be “For what price would you sell this parcel of land?” Closer inspection of this question reveals that this question asks what the parcel of land is subjectively worth to the farmer. Perhaps it is worth so much to the farmer that she/he would never sell it at all. There are several ways in which one can investigate whether specification errors occur. First of all,
All about High Tech High tech is technology that is at the cutting edge--the most advanced technology currently available. There is no specific class of technology that is high tech--the definition shifts over time--so products hyped as high tech in the 1960s would now be considered, if not exactly low tech, then at least somewhat obsolete. This fuzzy definition has led to marketing departments describing nearly all new products as high tech. Economy Because the high-tech sector of the economy develops or uses the most advanced technology known, it is often seen as having the most potential for future growth. This perception has led to
per minute. Karamitroglou published the article entitled "A Proposed Set of Subtitling Standards in Europe" in issue number 2 of Translation Journal in 1998. This art- icle covers many aspects in relation with subtitles, their format and the profession- al conventions at stake. With a somewhat prescriptive intention, the author pro- poses some linguistic "best practices", as far as creation of subtitles is concerned. In terms of reading speed, he mentions that a tested value for "average readers" (i.e. aged 1465 years, and who belong to a middle-high social class from an edu- Babel 59:4 (2013), 406420. © Fédération des Traducteurs (fit) Revue Babel doi 10.1075/babel.59.4.02mar issn 05219744 e-issn 15699668 Subtitle reading speed407 cational and social standpoint) oscillates between 150 and 180 words per minute.
F2 genotypes C C C C C C C C F2 phenotypes red pink (pink) white; F2 ratio 1:2:1; accept other symbols if key given. accept r and w as symbols without key. 6 (c) (i) 65; 130; 65; 3 (ii) 0.138 + 0.007 + 0.061; (or other suitable working) 0.206 – 0.208; 2 marks for correct value if no working shown ecf for both marks but calculated value must be to three decimal places 2 (iii) support, figure lower than 5.991 / figure lower than critical value; R ‘support’ on its own. ecf applies if value in (ii) is incorrect 1
..................8-9 Conclusion.........................................................................................................................10 2 Introduction This chapter documents the advent and rise of automated essay scoring (AES) as a means of both assessment and instruction. The first section discusses what AES is, how it works, and who the major purveyors of the technology are. The second section describes outgrowths of the technology as it applies to on-going projects in measurement and education. In 1973, the late Ellis Page and colleagues at the University of Connecticut programmed the first successful automated essay scoring engine, "Project Essay Grade (PEG)" (1973). The technology was foretold some six years earlier in a landmark Phi Delta Kappan article entitled, "The Imminence of Grading Essays by Computer" (Page, 1966)
Ergo Pikas Integration of Lean Construction and Building Information Modelling DISSERTATION Tallinn 2010 2 UNIVERSITY OF APPLIED SCIENCES Author: Ergo Pikas- Civil Engineering student, Faculty of Construction, Tallinn University of Applied Sciences Supervisor: Rafael Sacks- Associate Professor, Faculty of Civil and Env. Engineering, Technion Israel Institute of Technology Consultant: Roode Liias- Professor and Dean, Faculty of Civil Engineering, Tallinn University of Technology Title: Integration of Lean Construction and Building Information Modelling Archived: University of Applied Sciences, Faculty of Construction
...........................................15 Conclusion.....................................................................................................................................16 Used materials:...............................................................................................................................17 2 Introduction With the advancement of technology ideas that used to be futuristic are nowadays already being researched with impressive headway made. One such research project is the railgun. I picked this topic because railguns are a childhood dream of every kid who watched sci- fi movies or something related to space. I wanted to learn more about how they're supposed to work and it is important because the research has done great leaps since 2009. Metaphorically it
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