7/26/2019 Problemas Capitulo 7 Alexander
1/12
7/26/2019 Problemas Capitulo 7 Alexander
2/12
7/26/2019 Problemas Capitulo 7 Alexander
3/12
7/26/2019 Problemas Capitulo 7 Alexander
4/12
7/26/2019 Problemas Capitulo 7 Alexander
5/12
7/26/2019 Problemas Capitulo 7 Alexander
6/12
7/26/2019 Problemas Capitulo 7 Alexander
7/12
7/26/2019 Problemas Capitulo 7 Alexander
8/12
7/26/2019 Problemas Capitulo 7 Alexander
9/12
7/26/2019 Problemas Capitulo 7 Alexander
10/12
7/26/2019 Problemas Capitulo 7 Alexander
11/12
7/26/2019 Problemas Capitulo 7 Alexander
12/12
(b) If the output is to be an integrated form of theinput, what is the maximum value the pulsewidth can assume?
300 k
+ 200 pFi
(a)
0 T t
Vm
i
(b)
For Prob. 7.75.
7.76 An circuit may be used as a differentiator if theoutput is taken across the inductor and (say
0 1 ), where is the width of the input pulse.If is fixed at 200 k , determine the maximumvalue of required to differentiate a pulse with
10 s.
7.77 An attenuator probe employed with oscilloscopeswas designed to reduce the magnitude of the inputvoltage by a factor of 10. As shown in Fig. 7.141,the oscilloscope has internal resistance andcapacitance , while the probe has an internalresistance . If is fixed at 6 M , find and
for the circuit to have a time constant of 15 s.
oi
Probe Scope
Rp
CsRs
For Prob. 7.77.
7.78 The circuit in Fig. 7.142 is used by a biology studentto study frog kick. She noticed that the frogkicked a little when the switch was closed butkicked violently for 5 s when the switch was
opened. Model the frog as a resistor and calculateits resistance. Assume that it takes 10 mA for thefrog to kick violently.
50
2 H
+
12 V
Switch
Frog
For Prob. 7.78.
7.79 To move a spot of a cathode-ray tube across thescreen requires a linear increase in the voltageacross the deflection plates, as shown in Fig. 7.143.Given that the capacitance of the plates is 4 nF,sketch the current flowing through the plates.
Rise time = 2 ms Drop time = 5 s
t
10
(V)
(not to scale)
For Prob. 7.79.
Top Related