1. LAB No.3 Introduction to PSpice Engr. Mian Shahzad Iqbal Lecturer Department of Telecommunication Engineering Digital Electronics

2. SPICE  SPICE is a general-purpose circuit simulator capable of performing the following types of analysis

3. Representation Codemetric prefixDecimal representation Ttera10 12 Ggiga10 9 Megmega10 6 Kkilo10 3 Mmilli10 -3 Umicro10 -6 Nnano10 -9 Ppico10 12 Ffemto10 -15

4. Dimension  Each element has a unit (dimension) which are as follows Spice SuffixUnits Vvolts Aamps Hzherts Ohm ohm (  ) Hhenry Ffarad Degreedegree

5. SPICE BASIC ELEMENTS  The basic elements of electronic circuits can be represented by the first letter 1st letterElement BGaAs Field-Effect Transistor (MESFET) CCapacitor DDiode EVoltage-Controlled Voltage Source (VCVS) FCurrent-Controlled Current Source (CCCS) GVoltage-Controlled Current Source (VCCS) HCurrent-Controlled Voltage Source (CCVS) IIndependent Current Source JJunction Field-Effect Transistor (JFET) KCoupled Inductors LInductors MMOS Field-Effect Transistor (MOSFET) QBipolar Junction Transistor (BJT) RResistor VIndependent Voltage Source

6. Thevenin's Analysis  LAB N0.3 Thevenin's Analysis  VIN 1 0 DC 10V ; Voltage source of 10 V DC  IS 4 3 DC 2A ; Current source of 2 A DC  VX 4 5 DC 0V ; Measures the current through R5  R1 1 2 5  R2 2 3 10  R3 2 0 20  R4 3 4 40  R5 5 0 10 .TF V(2,4) VIN ; Transfer function analysis .END ; End of circuit file

7. Output  NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE  ( 1) 10.0000 ( 2) 12.5000 ( 3) 23.7500 ( 4) - 11.2500  ( 5) -11.2500  VOLTAGE SOURCE CURRENTS  NAME CURRENT  VIN 5.000E-01  VX -1.125E+00  TOTAL POWER DISSIPATION -5.00E+00 WATTS  **** SMALL-SIGNAL CHARACTERISTICS  V(2,4)/VIN = 6.250E-01  INPUT RESISTANCE AT VIN = 2.000E+01  OUTPUT RESISTANCE AT V(2,4) = 1.094E+01

8. Schematic Circuit

9. Output