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Engineering · Electrical Engineering
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a) Log, Anti-Log and Summation circuit can be design to achieve signal multiplication, which is shown in Figure Q2a. Briefly, explain the working principles, and then identify its design limitation xLOG ANTILOG Y MULTIPLICATION Figure Q2a Multipicaion by Diodes and Op. Circuits b) Signal multiplication can be achieved by so called brute force method shown in Figure Q2b. What are its disadvantages in practice? digital multiplier-DIA V. Figure Q2b Multiplication by Digital Multiplier

c) Figure Q2c below shows an analogue four quadrant multiplier. If transistors are matched, which is to say Q1-Q2: Q,-Q4-Q5- Qprove that I.R

01 111 12 Q3 Q4 o2 02 21 22 Qs Q6 Q1 V11 41 V. Figure Q2c Four Quadrant Multiplier

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