Electronics and Communication Engineering > Consumer Electronics, ETEC 406

Consumer Electronics, ETEC 406

Course Description:

Class: 4th Year                     Subject Code: ETEC 406                  Credits: 4
Total Teaching Weeks in Semester: 13+1 Weeks
Total Lecture Classes Available: 39
Total Tutorial Classes Available: 13

Instructions of Paper Setters:                         MAXIMUM MARKS: 75
1. Question No. 1 should be compulsory and cover the entire syllabus. This question should have objective or short answer type questions. It should be of 25 marks.
2. Apart from Q. No. 1 rest of the paper shall consist of four units as per the syllabus. Every unit should have two questions. However, student may be asked to attempt only 1 question from each unit. Each question should be of 12.5 marks.

Unit I
Audio System: Microphones: construction, working principles and applications of microphones, their types e.g.  i ) Carbon ii) moving coil iii) velocity iv) crystal v) condenser vi) cordless etc.
Loud speaker: Direct readiating, horn loaded woofer, tweeter, mid range, multi- speaker system, baffles and enclosures.
Sound recording on magnetic tape, its principles, block digram, and tape transport mechanism.
Digital sound recording on tape and disc.
CD system, Hi- Fi system, pre- amplifier and equalizer system, stereo amplifiers.
[No. of Hours: 11]

Unit II
Television: Monpchrome TV Communication: Elements of TV communication system; Scanning – its need for picture transmission; Need synchronizing and blanking pulses; Progressive scanning – Gross structure filters, interlaced scanning, resolution and band width requirement, tonal gradation; Composite Video signal (CVS )at the end of even and add fields. Equalizing pulses and their need; Monochrome picture tube – construction and working, comparison of magnetic and electric of Construction and working of camera tube: vidicon and plumbicon , Block diagram of TV camera and the transmitter chain.

Block diagram of a TV receiver: function of each block and wave form at the input and out put of each block; Frequency range of various VHF bands and channels used in India Major specification of the CCIR.

Concepts of positive and negative modulation VSB Transmission Turner: Typical circuits of scanning and EHT stages of TV receiver , keyed AGC , function and location of brightness contrast V- hold , H- hold of centering control; Identification of faulty stage by analyzing the symptoms and basic idea of a few important faults and there remedies.
[No. of Hours: 11]

Unit III
Color TV: Primary colors, trisimulus values, trichromitc coefficients, concepts of additive and subtracting mixing of colours, concepts of luminance, Hue and saturation, Representation of a color in colour triangle, non spectral colour , visibility curve; Compatibility of colour TV system with monochrome system . Block diagram of colour TV camera, Basic colour TV system – NTSC, SECAM, and PAL their advantages and disadvantages; Construction and working principles of Trinitron and PIL types of colour picture tubes. Concepts of convergence, purity, beam shifting; Need for luminance and band sharing by color signals, sub – carriers frequency, colour difference signal and its need synchronous quadratic modulation and representation of a color by a vector, brust signal and its need , chrominance signal; Block diagram of PAL TV receiver.
[No. of Hours: 11]

Unit IV
Explanation and working digital TV LCD TV, HDTV , Plasma TV

Cable Television: Block diagram and principle of working of cable TV and DTH, Cable TV using internet; Study of VCD and DVD , mobile phone architecture , FAX , Touch tone telephone set.
[No. of Hours: 11]

Text Books:
    R. R. Gulati, “Modern Television Practice” New Age International, 2nd Edition.
    S. P. Bali, “Consumer Electronics” Pearson Education, 1st Edition.
    R. G. Gupta, “Audio & Video Systems” TMH – 2nd Edition.

Reference Books:
    A. Dhake, “Television & Video Engineering” TMH – 2nd Edition.
    R.R. Gulati, “Monochrome & Colour Television” New age International Publisher, 2nd Edition.

Course Sessions:
  • Consumer Electronics - Microphone
  • Content Author(s): Prof. Ashwni Kumar

    Session Description:

    Unit 1 -

    • Audio Systems - Microphone

  • Consumer Electronics - Loudspeakers
  • Content Author(s): Prof. Ashwni Kumar

    Session Description:

    Unit 1 -

    • Introduction to loudspeaker
    • Components of loudspeaker
    • Working of loudspeaker
    • Direct radiating loudspeaker – Advantages, disadvantages
    • Woofers – Horn loaded woofer
    • Tweeters – Cone, Dome, Horn, Advantages
    • Mid-range speaker
    • Multispeaker system - Advantages
    • Enclosure
    • Infinite baffle

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