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2003 Course Electronic Product Design

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Total No. of Questions : 12] [Total No. of Pages : 3 [3664] - 196 P 1346 B.E. (E & TC) ELECTRONIC PRODUCT DESIGN (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer 3 questions from Section I and 3 questions from Section II. 2) Answers to the two sections should be written in separate books. 3) Figures to the right indicate full marks. 4) Use of electronic pocket calculator is allowed. 5) Assume suitable data, if necessary. SECTION - I Q1) a) b) Discuss in details different stages of an electronic product development. Explain importance of each stage in detail. [10] What is need of slowing down the rise/fall time of high frequency clock. Find amount of rise time offered by simple RC low pass circuit with [8] R = 56 , C = 47 PF to 20 MHz clock. OR Q2) a) b) Q3) a) b) c) With the help of a practical example of data acquisition system, establish the technocommercial feasibility of product. [8] Explain in detail how the power supply requirement for an electronic product containing 4 x 4 matrix keyboard, 16 x 2 LCD display, a micro controller, few CMOS digital ICS, OP AMP and ADC TS estimated. What is safety margin kept between calculated and actual power supply capacity. [10] A micro controller system is to be operated at 300 MHz clock frequency. What are the PCB design considerations for such a system. What type of PCB will be used to implement circuit. Justify. [8] Two tracks on PCB having laminate thickness of 3.5 mm and r = 4.7 have an overlap area of 8 cm2. What will be the capacitance between two tracks. [4] Calculate resistance of 30 cm long copper track with 2.00 mm width on standard 70 micron copper clad laminate. = 4 ohm cm for copper. [4] OR P.T.O.

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