Analog Electronics Circuits ELECTRONIC ENGINEERING DIPLOMA

Government of Karnataka

Department of Technical Education Board of Technical Examinations, Bengaluru

Course Title	:	Analog	Electronics Circuits	Course Code	: 15EC31T
Semester	: Third			Course Group	: Core
Teaching Scheme in Hrs (L:T:P): 4:0:0				Credits	: 4
Type of course	: Lecture			Total Contact Hours	: 52
CIE	: 25 Marks			SEE	: 100 Marks

  Prerequisites

Basic principles of electrical and electronics engineering and knowledge of semiconductor theory and devices

  Course Objectives

1. Understand the concept and applications of regulated power supplies, SMPS and UPS.

2. Understand the concept of amplification, operating point on DC load line and amplifier applications.

3. Study the working principles of different Op-amp circuits.

4. Construct and verify working of basic wave-shaping circuits such as clipping and clamping circuits.

5. Know the different circuits of sinusoidal oscillators and their applications.

  Course Outcomes

On successful completion of the course, the students will be able to attain the following COs

Course Outcome		CL	Linked POs	Teaching Hours
CO1	Construct   and   analyse   sub-circuits   of                                                                DC regulated power supplies	R/U/A	1,2,3,5,6,10	12
CO2	Appraise the applications of SMPS and UPS	R/U/A	1,2,3,5,6,10	12
CO3	Realize amplifier applications of BJT	R/U/A	1,2,3,10	10
CO4	Construct and analyse the Op-amp application circuits	R/U/A	1,2,3,10	07
CO5	Design and analyse active filter circuits	R/U/A	1,2,3,10	06
CO6	Select and analyse simple oscillator circuits and wave-shaping circuits	R/U/A	1,2,3,10	05
Total				52

Course	Programme Outcomes
	1	2	3	4	5	6	7	8	9	10
Analog Electronics Circuits	3	3	3	--	3	3	--	--	--	3
Level 3- Highly Addressed, Level 2-Moderately Addressed, Level 1-Low Addressed. Method is to relate the level of PO with the number of hours devoted to the COs which address the given PO. If >40% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 3 If 25 to 40% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 2 If 5 to 25% of classroom sessions addressing a particular PO, it is considered that PO is addressed at Level 1 If < 5% of classroom sessions addressing a particular PO, it is considered that PO is considered not-addressed.

    Course content and pattern of marks for SEE

Unit	Unit Name	Teaching Hours	Weightage for CLs in SEE			Marks	Weightage (%)
			R	U	A
1	Power supplies	12	10	10	10	30	20
2	BJT Biasing and amplifiers	12	10	10	10	30	20
3	OP-AMP and applications	10	05	10	15	30	20
4	Active filters and instrumentation amplifier	07	05	10	10	25	18
5	Wave-shaping circuits	06	05	05	05	15	11
6	Sinusoidal oscillators	05	05	05	05	15	11
Total		52	40	50	55	145	100

   Course Contents

DC regulated power supply: Need and block diagram. Rectifiers: Ripple Factor, Ripple Frequency, Efficiency, Peak Inverse Voltage. Circuits, operations and waveforms of half- wave and full-wave (centre-tap transformer and bridge) rectifiers. Expressions for ripple factor and efficiency, simple problems. Filters: Need for filters in power supplies, working of C and PI filter with waveforms. Regulators: Need for voltage regulators in power supplies, working of voltage regulator using Zener diode, line and load regulation. IC voltage regulators: Features of 78xx, 79xx, LM 317 ICs. Basic switching regulator: Definition, working, step-down and step-up configuration, block diagram of SMPS. UPS: Block diagram and working principle of on-line and off-line UPS.

Biasing: principle of transistor as switch and amplifier, need for biasing, operating point, DC load line, stability factor, voltage divider bias for BJT. Amplifier features: direct, RC coupled and Transformer coupled; AF and RF amplifiers; and voltage and power amplifiers. Feedback in amplifiers: Types of feedback and their features. Small-signal Amplifier: Working of common emitter RC coupled amplifier and its frequency response. Large-signal

 

amplifier: Concept of AC load line, classification and principle of power amplifiers,  working of Class A–Series-fed amplifier and transformer-coupled amplifier, Class B- Push- pull amplifier and complementary-symmetry push-pull amplifier, expression for output power and maximum power efficiency of class-A and class-B power amplifiers. Working of Class AB and Class C amplifiers. Comparison of power amplifiers. Multistage amplifiers: Concept and expression for voltage gain.

Basic differential amplifier: Working principle. Op-amp: Block diagram, ideal and practical characteristics. Op-amp parameters: Input offset voltage, input offset current, power supply rejection ratio, CMRR, input and output impedance, gain, gain-bandwidth product, slew-rate. Open-loop configuration: comparator, disadvantages of open-loop mode. Closed-loop configuration: virtual ground, applications - inverting, non-inverting, voltage follower, summing & difference amplifiers, differentiator, integrator, Schmitt trigger, and concept of precision rectifier. Simple problems.

Active filter: Classification, circuits, working, expressions for cut-off frequencies and frequency response of 1st order Butterworth LPF, HPF, BPF and BEF (No Derivation). Problems to design and analyse 1st order Butterworth filters. Realization of BPF and BEF using LPF and HPF. Mention of applications of active filters. Instrumentation amplifier: Need for instrumentation amplifier, working of instrumentation amplifier circuit. Phase Locked Loop (PLL): voltage to frequency converter, PLL operation with mention of its applications.

RC Circuits: Differentiator and Integrator circuits and their response to sine and square- wave signals. Clippers: positive and negative series clippers, positive and negative shunt clippers, combinational clippers and simple problems. Clampers: positive and negative clampers. Mention on the applications of clippers and clampers.

Concept of feedback and types, open and closed-loop gains, Barkhausen criteria, LC Tank circuit and stability. Working of Hartley, Collpits and crystal oscillator using BJT. Working of RC phase-shift and Wein-bridge oscillators using Op-amp. Mention on applications and features of these oscillators.

  References

1. Electronic Devices and Circuits, S. Salivahanan , N. Sereshkumar , McGraw Hill Education (India) Private Limited, ISBN - 9781259051357

2. Op-amps and linear integrated circuits, Ramakanth A. Gayakwad, ISBN- 9780132808682

3. Principles of Electronics, Rohit Mehta and V K Mehta, S. Chand and Company Publishing, ISBN- 9788121924504

4. Electronic Devices and Circuits, David A. Bell, Oxford University Press, ISBN- 9780195693409

5. Fundamentals of Electrical and Electronics Engineering, B. L. Theraja, S. Chand and Company Publishing. REPRINT 2013, ISBN-8121926602.

 

6. e-References/URLS:

http://www.allaboutcircuits.com/ http://www.allaboutcircuits.com/videos

  Course Delivery

The course will be delivered through lectures, presentations and support of modern tools. Student activities are off-class.

  Course Assessment and Evaluation Scheme

  Master Scheme

Assessment Method	What		To Whom	Assessment mode /Frequency /timing	Max. Marks	Evidence Collected	Course Outcomes
Direct assessment	CIE	IA	Students	Three tests+	20	Blue Books	1 to 6
				Activity*	05	Activity Sheets	1 to 6
	SEE	End exam		End of the course	100	Answer Scripts at BTE	1 to 6
				Total	125
Indirect	Student feedback on course		Students	Middle of the Course	Nil	Feedback Forms	1 to 3 Delivery of course
	End of course survey			End of the Course	Nil	Question- naires	1 to 6, Effectiveness of delivery instructions & assessment methods

Legends: CIE-Continuous Internal Evaluation, SEE- Semester End-exam Evaluation

+ Every CIE/IA test shall be conducted for 20 marks. Average of three tests, by rounding off any fractional part thereof to next higher integer, shall be considered for CIE/IA.

*Students should do activity as per the list of suggested activities/ similar activities with prior approval of the teacher. Activity process must be initiated well in advance so that it can be completed well before the end of the term.

Questions for CIE and SEE will be designed to evaluate the various CLs as per the weightage shown in the following table.

Sl. No.	Cognitive Levels (CL)	Weightage (%)
1	Remembering	25
2	Understanding	35
3	Applying	40
Total		100

Continuous internal evaluation (CIE) pattern

(i) Student Activity (5 marks)

The following student activities or similar activities can be assigned for assessing CIE/IA

Sl. No.	Activity
1	Design  and  construct  simple  application  such  as  door  bell/calling  bell, blinking LED, burglar’s alarm etc. Prepare a report on its design, function, specifications and

	cost estimation.
2	Collect the technical specifications and price of at least 10 electronic components such as diode, transistor etc. and at least 5 electronics equipments such as RPS, UPS, CRO etc.
Execution Note: 1. Each batch (Maximum of 2 students) should perform the above activities independently. Students can also choose any other two similar activities/related/ innovative activities with prior approval from the concerned teacher. 2.  Teacher is expected to observe, follow-up, and record the progress of students’ activities 3.  Assessment is made based on quality of work as prescribed by the following rubrics table.

(i)    Model of rubrics for assessing student activity (For every student)

Dimension	Scale					Marks (Example)
	1 Unsatisfactory	2 Developing	3 Satisfactory	4 Good	5 Exemplary
1. Research and gathering information	Does not collect information relate to topic	Collects very limited information, some relate to topic	Collects basic information, most refer to the topic	Collects more information, most refer to the topic	Collects a great deals of information, all refer to the topic	3
2. Full-fills team roles and duties	Does not perform any duties assigned to the team role	Performs very little duties	Performs nearly all duties	Performs almost all duties	Performs all duties of assigned team roles	2
3. Shares work equality	Always relies on others to do the work	Rarely does the assigned work, often needs reminding	Usually does the assigned work, rarely needs reminding	Always does the assigned work, rarely needs reminding.	Always does the assigned work, without needing reminding	5
4. Listen to other team mates	Is always talking, never allows anyone to else to speak	Usually does most of the talking, rarely allows others to speak	Listens, but sometimes talk too much,	Listens and talks a little more than needed.	Listens and talks a fare amount	3
Total marks						ceil(13/4)= 4

(iii) CIE/IA Tests (20 Marks)

Three tests have to be conducted, during specified schedule, in accordance with the test pattern given below and their average-marks shall be considered for CIE/IA.

 

(iv) Format of CIE/IA test question paper