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You are the new chief PCB designer for a small company who are about to become heavily involved in the design and realisation of digital timing products. Your management wants to prove the path from design entry to final design data production. Consequently, your first task within the company is to take a design from concept through to completion. Given the nature of the company business, it has been decided the test design will be a digital clock, the block diagram of which is illustrated below. An additional requirement is miniaturisation and the board size should be as small as is practically possible.
Each of the elements can be realised from 7400-series TTL in SMD packages. The circuit below shows the internal components and connections for the divide-by-60 block above. The counters are 74160 and the 7-segment BCD is a 7447. Any additional information is readily available in data books and the internet.
Let the modulating signal m(t) be a sinusoid of the form m(t) = cos 2πf m t, f m c , and let the carrier signal be cos(2πf c t + φc). (a) Determine the conventional AM signal,
The resistance of a 5 m length of wire is 600Ω.Determine: a) the resistance of an 8 m length of the same wire, b) the length of the same wire when the resistance is 420Ω
Find out which of the two motors: Two three-phase induction motors while connected across a 400 V, 50 Hz supply are running at 1440 and 940 RPM respectively. Find out which of
Q. A silicon npn BJT is biased by the method shown in Figure, with R E = 240 , R 2 = 3000 , and V CC = 24 V. The operating point corresponds to V BEQ = 0.8V, I BQ = 110 µA,
Question: a). Draw the energy diagram of a pn junction: (i) at thermal equilibrium, (ii) when a forward bias with magnitude half the built in potential (V = φk/2) is applie
Why do potential barriers breaks when a breakdown voltage is application to semiconductor
Copy data byte 10H LDAX instruction Example : Copy data byte 10H stored at memory location 3020 H to the accumulator using LDAX instructions. Solution : To use
What are the important requirements of a good insulating material? Important requirements of good insulating materials:- The necessity of good insulating materials can be cl
Unconditional Jump JMP ( Unconditional Jump ) Instruction: This instruction is used to transfer the execution to the specified memory address unconditionally ( does not c
Q. Draw the various characterstics of a DC shunt generator and explain critical resistance. Sol. Following are three most important characterstics or curves of a d.
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