Analysis and Simulation Exercises DC Circuit Analysis 2

Analysis and Simulation Exercises ~ DC Circuit Analysis (2) n n Voltage-Controlled (VCVS) Voltage-Controlled (VCCS) Current-Controlled (CCVS) Current-Controlled (CCCS) Voltage Source Current Source 1

Voltage-Controlled Voltage Source (VCVS) 2 Va 2

3

Input File Voltage-Controlled Voltage Source V 1 0 10 V E 30202 R 1 1 2 250 R 2 2 0 100 K R 3 3 4 40 K RL 4 0 1 K. OP. TF V(4) V. END 4

Output File NODE VOLTAGE ( 1) 10. 0000 ( 2) 9. 9751 ( 3) 19. 9500 ( 4). 4866 **** SMALL-SIGNAL CHARACTERISTICS V(4)/V = 4. 866 E-02 INPUT RESISTANCE AT V = 1. 003 E+05 OUTPUT RESISTANCE AT V(4) = 9. 756 E+02 5

Voltage-Controlled Current Source (VCCS) 6

Input File Voltage-Controlled Current Source V 1 0 12 V G 3 0 2 0 0. 02 R 1 1 2 300 R 2 2 0 900 R 3 3 0 200 R 4 3 0 200. OPT nopage. TF V(3) V. END 7

Output File NODE VOLTAGE ( 1) 12. 0000 ( 2) 9. 0000 ( 3) -18. 0000 **** VOLTAGE-CONTROLLED CURRENT SOURCES NAME G I-SOURCE 1. 800 E-01 **** SMALL-SIGNAL CHARACTERISTICS V(3)/V = -1. 500 E+00 INPUT RESISTANCE AT V = 1. 200 E+03 OUTPUT RESISTANCE AT V(3) = 1. 000 E+02 8

Current-Controlled Voltage Source (CCVS) 9

Input File Current-Controlled Voltage Source V 1 0 15 V V 0 2 A 2 0 V H 3 0 V 0 -400 R 1 1 2 50 R 2 2 0 500 R 3 2 A 0 500 R 4 3 4 50 R 5 4 0 150. OPT nopage. TF v(4) V. END 10

Output File NODE VOLTAGE ( 1) 15. 0000 ( 2) 12. 5000 ( 3) 10. 0000 ( ( 2 A) 12. 5000 VOLTAGE SOURCE CURRENTS NAME CURRENT V -5. 000 E-02 V 0 -2. 500 E-02 **** CURRENT-CONTROLLED VOLTAGE SOURCES NAME H V-SOURCE 1. 000 E+01 I-SOURCE -5. 000 E-02 **** SMALL-SIGNAL CHARACTERISTICS V(4)/V = 5. 000 E-01 INPUT RESISTANCE AT V = 3. 000 E+02 OUTPUT RESISTANCE AT V(4) = 3. 750 E+01 4) 7. 5000 11

Current-Controlled Current Source (CCCS) 12

Input File Current-Controlled Current Source V 1 0 20 V F 3 0 V -3 R 1 1 2 1500 R 2 2 0 2500 R 3 3 0 500 R 4 3 0 500. OPT NOPAGE. TF V(3) V. END 13

Output File NODE VOLTAGE ( 1) 20. 0000 ( 2) 12. 5000 ( 3) -3. 7500 **** CURRENT-CONTROLLED CURRENT SOURCES NAME F I-SOURCE 1. 500 E-02 **** SMALL-SIGNAL CHARACTERISTICS V(3)/V = -1. 875 E-01 INPUT RESISTANCE AT V = 4. 000 E+03 OUTPUT RESISTANCE AT V(3) = 2. 500 E+02 14

Question & Answer 15

Exercise n For the circuit in Fig. 1, find the current through the 6 - resistor and the voltage v. 16