0195136047.pdf

PROBLEMS 99

R 2 = 10 Ω R 4 = 5 Ω

R 1 = 20 Ω

10 V R 3 = 10 Ω

3

2

1

15 V

− +

+

−

Figure P2.2.11

1 Ω 2 A 1 Ω 2 Ω

12 V

(^12) + −
Figure P2.2.12
2 Ω
4 A 4 Ω V^0
4 V
24 V

• 
  


• 
  

  −

  
  


• 
  

  −
  − Figure P2.2.13
  2 Ω
  1 Ω 3 Ω Vx =?
  5 A
  6 V
  4 A

  
  


• 
  


• 
  

  −
  −
  Figure P2.2.14
  2.5.2Develop and execute a PSpice program to find
  the node voltages and the current through each
  element of the circuit given in Figure P2.5.2.
  2.5.3For the circuit shown in Figure P2.5.3, develop
  and execute a PSpice program to obtain the node
  voltages and the current through each element.
  2.5.4For the circuit given in Figure P2.5.4, develop and
  execute a PSpice program to solve for the node
  voltages.
  2.5.5Write and execute a PSpice program to analyze the
  resistor bridge circuit shown in Figure P2.5.5 to
  solve for the node voltages and the voltage-source
  current. Then find the voltage across the 50-
  resistor and the total power supplied by the source.
  2.6.1The current through a 2.5-mH indicator is a
  damped sine given byi(t)= 10 e−^500 tsin 2000t.
  With the aid of MATLAB, plot the waveforms
  of the inductor currenti(t), with voltagev(t)=
  Ldi/dt∫ , powerp(t)=vi, and energyw(t)=
  t
  0 p(τ) dτ. Starting att=0, the plots should
  include at least one cycle and at least 20 points per
  cycle.
  2.6.2An interface circuit consisting ofR 1 andR 2 is
  designed between the source and the load, as il-
  lustrated in Figure P2.6.2 such that the load sees
  aTh ́evenin resistance of 50between terminals
  CandD, while simultaneously the source sees a
  load resistance of 300betweenAandB. Using
  MATLAB, findR 1 , andR 2.
  Hint:solve the two nonlinear equations given by
  (R 1 + 300 )R 2
  R 1 + 300 +R 2
  = 50 ; R 1 +
  50 R 2
  R 2 + 50
  = 300