CSE245 Lab 2

1
CSE245 Lab 2

• R11k
• R22k
• R33k
• C1100f
• C2200f
• L11000n
• V1 is a trapezoidal pusle voltage source. SPICE
  netlist for V1 is pulse(0 1 0n 0.50n 0.50n 4n
  10n)
• Initial conditions for C1, C2 and L1 0

2
CSE245 Lab 2

• 1) Use PowerSPICE or HSPICE to simulate the
  circuit in slide 1.
• Transient simulation from 0 to 10ns. Plot v(1),
  v(2), v(3), v(4).
• 2) Use Modified Nodal Analysis (MNA) to write the
  transient circuit matrix for the circuit. For
  capacitors and inductors, use Trapezoidal
  integration method. A sample MNA matrix could be
  found in the Matlab script of lab1.
• 3) Write a Matlab script to simulate the circuit
  in slide 1.
• Simulate the circuit (Transient simulation from 0
  to 10ns) with 3 different integration methods
  Forward Euler, Backward Euler and Trapezoidal.
• Devise a time stepping scheme that uses as few as
  time points as possible. In lab1 one we used a
  fixed time step delta, in this lab the general
  idea is to use small time steps when the circuit
  is changing and large time steps when the circuit
  is flat.
• 4) Deliverables
• MNA Matrix (trapezoidal integration).
• Matlab script, explain your time stepping scheme.
• Comparison and explanation of the results from
  Matlab and different integration methods.
• Simulation waveforms of v(1), v(2), v(3), v(4)
  from both Matlab and PowerSPICE/HSPICE. Compare
  your Matlab results with PowerSPICE / HSPICE.