电路分享基础英文PPT (40).pdf
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1、Step Functionunit step function:t(t)010 ()1 t=delay unit step function:general step function:-(0)t+(0)t 0 A()A t=-(0)t+(0)t t(t)0A00 ()1 tt=-0()tt+0()ttt(t)01t0Canyou write a general step function for delay?dynamic circuitS-+SU(0)t=ab12dynamic circuit-+S()Ut ab()sin()f ttt=()100sin()()f ttttt=()1f t
2、0tt0t0()f tfunction1 simulating the switch action2 delaying a function()20sin()ftttt=0tt()2ft0()sin()f ttt=t0()f t(t)tf(t)01t0tf(t)0t0-(t-t0)gate function10()()()f tttt=3 starting a function4 representing a piecewise constant signalAnswer:AWhich of the following is the correct expression of?()f t1t1f(t)0243A()2(1)(3)(4)f tttt=B()2(1)(3)(4)f tttt=+()2(1)(3)(4)f tttt=+C()2(1)2(3)(4)f tttt=DPractice problem:
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