Diodes and Applications 3.
Multistage, RF, and Power Amplifiers 6. Operational Amplifiers 7.
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Op-Amp Responses 8. Basic Op-Amp Circuits 9. Active Filters Explain the operation of circuits using transistors in switching mode to achieve speed control of a DC motor. The course is designed to develop the following Elements of Competency: 1. This course will provide students with an opportunity to develop the Graduate Attribute s specified below: University Graduate Attribute Course Learning Outcome s Deep discipline knowledge informed and infused by cutting edge research, scaffolded throughout their program of studies acquired from personal interaction with research active educators, from year 1 accredited or validated against national or international standards for relevant programs Critical thinking and problem solving steeped in research methods and rigor based on empirical evidence and the scientific approach to knowledge development demonstrated through appropriate and relevant assessment 2, 3, 4, 7, 10 Teamwork and communication skills developed from, with, and via the SGDE honed through assessment and practice throughout the program of studies encouraged and valued in all aspects of learning Students are expect to be familiar with this material in preparation for lectures.
Please purchase the kit through the University online shop. The online shop link will be available during the Orientation Week lecture and through MyUni. Copies of the book are available in the Barr Smith library. This course will use a variety of online resources to support the learning process. Recorded slide presentations on key concepts, theory and methods will be made available prior to scheduled lectures, at which the content of the presentations will be discussed in more detail, in the context of applications and problem-solving exercises.
It is essential that student view the slide presentations or read the slides before attending lectures. Video recordings of lectures will normally be made available on the course website after each lecture. The use of the course discussion boards is strongly encouraged for questions relating to course material, but also for more general discussion on electrical and electronic engineering and technology. Anonymous posts will be permitted were possible, offensive posts will not.
Lecturers will make a best effort to respond promptly to questions raised on the discussion boards. The course gradebook will be used to return continuous assessment marks. Students should check the gradebook regularly and confirm their marks have been correctly entered. Students will be expected to prepare for lectures by viewing online slide presentations explaining the theory and concepts that are the foundation of learning in this course. Lectures will be largely devoted to demonstrations and active learning activites that explain the context and application of the theory, develop a deeper undersatnding of the key concepts, and provide an opporuntity to practice solving problems.
Tutorials will be used for assisted problem-solving by students, working individually or in groups. Students are expected to prepare before tutorials and this preparation will be assessed as part of the weekly online test. There is also a small assessment componet for active participation in tutorials. Activity Detail Contact Hours Workload Hours Lectures 30 lectures 30 60 Tutorials 11 tutorials 11 22 Practicals 9 3-hr sessions 27 32 On-line tests 11 tests 0 6 Mid-semester tests 4 tests 4 12 Exam 1 exam 3 24 Total 75 Laboratory clothing restrictions apply to the practical sessions: closed-toe shoes; covered shoulders; long hair must be tied back.
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There is no formal Small Group Discovery Experience identified in this course, but students will work in small groups under the guidance of academic staff, in the laboratories and in problem-solving tutorials. Mid-semester tests 4 Individual Summative Weeks 5, 7, 9, 11 1. Weekly online tests including tutorial preparation 15 Individual Formative Weeks 1.
Tutorial participation 5 Individual Formative Weeks 1. This assessment breakdown is registered as an exemption to the University's Assessment for Coursework Programs Policy. The exemption is related to the Procedures clause s : 1. This course has a hurdle requirement. Meeting the specified hurdle criteria is a requirement for passing the course.
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Light emitting diodes LEDs have become so commonly used in electronics that their importance may tend to be overlooked. Numerous avionics displays and indicators use LEDs for indicator lights, digital readouts, and backlighting of liquid crystal display LCD screens. LEDs are simple and reliable.
They are constructed of semiconductor material. When a free electron from a semiconductor drops into a semiconductor hole, energy is given off. This is true in all semiconductor materials. However, the energy released when this happens in certain materials is in the frequency range of visible light.
Figure is a table that illustrates common LED colors and the semiconductor material that is used in the construction of the diode.source
Principles of Analog Electronics
LED colors and the materials used to construct them as well as their wavelength and voltages. When the diode is forward biased, the energy given off is visible in the color characteristic for the material being used. A close up of a single LED left and the process of a semi-conductor producing light by electrons dropping into holes and giving off energy right.
The symbol for a light emitting diode is the diode symbol with two arrows pointing away from the junction. The solid-state semiconductor devices described in the previous section of this chapter can be found in both analog and digital electronic circuits. As digital electronics evolve, analog circuitry is being replaced. However, many aircraft still make use of analog electronics in radio and navigation equipment, as well as in other aircraft systems. A brief look at some of the basic analog circuits follows.
Rectifier circuits change AC voltage into DC voltage and are one of the most commonly used type of circuits in aircraft electronics. The circuit has a single semiconductor diode and a load resistor. When the AC voltage cycles below zero, the diode shuts off and does not allow current flow until the AC cycles through zero voltage again.
The result is pronounced pulsating DC. While this can be useful, half of the original AC voltage is not being used. A half wave rectifier uses one diode to produce pulsating DC current from AC. Half of the AC cycle is wasted when the diode blocks the current flow as the AC cycles below zero. One way to do this is to tap the secondary coil at its midpoint and construct two circuits with the load resistor and a diode in each circuit.
A full wave rectifier can be built by center tapping the secondary coil of the transformer and using two diodes in separate circuits. This rectifies the entire AC input into a pulsating DC with twice the frequency of a half wave rectifier. When the AC cycles so the top of the secondary coil of the transformer is positive, current flows from ground, through the load resistor VRL , Diode 1, and the upper half of the coil. Current cannot flow through Diode 2 because it is blocked. Current flow through Diode 1 is blocked. This arrangement yields positive DC from cycling AC with no wasted current.
Fundamentals of analog electronics pdf
Another way to construct a full wave rectifier uses four semiconductor diodes in a bridge circuit. Because the secondary coil of the transformer is not tapped at the center, the resultant DC voltage output is twice that of the two-diode full wave rectifier. The bridge-type four-diode full wave rectifier circuit is most commonly used to rectify single-phase AC into DC.
Current flows from it through diode D1 , then through the load resistor, and through diode D2 on its way back to the top of the secondary coil.