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Electronics and Communication Electronic Devices And Circuits Difficulty: Medium

A PPI cathode-ray tube as used on a radar set The Laplace transform of a function f(t) u(t), where f(t) is periodic with period T, is A(s) times the Laplace transform of its first period. Then The most commonly used amplifier in sample & hold circuits is The linear time invariant system h(t) = (e -4t + e 4t ).u(t) is . . . . . . . . and . . . . . . . . In a material characterized by a complex permittivity, the imaginary part is a measure of