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Analog Electronics

Q1:

If 1.5% of the output of an amplifier is feedback positively to the input, the minimum gain required of the amplifier for oscillations to occur, is

A 16.6

B 44.4

C 66.6

D 75

ANS:C - 66.6

AB = 1 (for oscillation) ----->1
B = 1.5%.
By puting 'B' value in eqation 1 we can find 'A'.

A = 66.6.



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