Hello everybody!
What am I doing wrong in attempts to simulate an example circuits with FFT? Why do my results not correspond to these ones in the book? With earlier simulations everything matched excellently!
Huge thanks for any decent explanations!
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** INPUT LISTING TEMPERATURE = 27.000 DEG C
***********************************************************************
V1 1 0 SIN(0 15 60 0 0)
RLOAD 2 3 10K
D1 1 2 MOD1
D2 0 2 MOD1
D3 3 1 MOD1
D4 3 0 MOD1
.MODEL MOD1 D
.TRAN .5M 17M
.PLOT TRAN V(1,0) V(2,3)
.FOUR 60 V(2,3)
.END
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** DIODE MODEL PARAMETERS TEMPERATURE = 27.000 DEG C
***********************************************************************
MOD1
IS 1.00E-14
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** INITIAL TRANSIENT SOLUTION TEMPERATURE = 27.000 DEG C
***********************************************************************
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
( 1) 0.0000 ( 2) 0.0000 ( 3) 0.0000
VOLTAGE SOURCE CURRENTS
NAME CURRENT
V1 2.789E-40
TOTAL POWER DISSIPATION: 0.00E+00 WATTS
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** OPERATING POINT INFORMATION TEMPERATURE = 27.000 DEG C
***********************************************************************
**** DIODES
D1 D2 D3 D4
MODEL MOD1 MOD1 MOD1 MOD1
ID 4.35E-21 4.35E-21 4.35E-21 4.35E-21
VD 0.000 0.000 0.000 0.000
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** TRANSIENT ANALYSIS TEMPERATURE = 27.000 DEG C
***********************************************************************
LEGEND:
*: V(1)
+: V(2,3)
TIME V(1)
*)------------- -2.000E+01 -1.000E+01 0.000E+00 1.000E+01 2.000E+01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+)------------- 0.000E+00 5.000E+00 1.000E+01 1.500E+01 2.000E+01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
0.000E+00 0.000E+00 + . * . .
5.000E-04 2.807E+00 . + . . * . .
1.000E-03 5.512E+00 . + . . * . .
1.500E-03 8.029E+00 . . + . * . .
2.000E-03 1.025E+01 . . + . * .
2.500E-03 1.213E+01 . . . + . * .
3.000E-03 1.354E+01 . . . + . * .
3.500E-03 1.453E+01 . . . + . * .
4.000E-03 1.494E+01 . . . + . * .
4.500E-03 1.488E+01 . . . + . * .
5.000E-03 1.424E+01 . . . + . * .
5.500E-03 1.313E+01 . . . + . * .
6.000E-03 1.154E+01 . . .+ . * .
6.500E-03 9.550E+00 . . + . *. .
7.000E-03 7.214E+00 . . + . * . .
7.500E-03 4.628E+00 . + . . * . .
8.000E-03 1.878E+00 . + . . * . .
8.500E-03 -9.415E-01 + . *. . .
9.000E-03 -3.723E+00 . + . * . . .
9.500E-03 -6.378E+00 . + * . . .
1.000E-02 -8.803E+00 . . * + . . .
1.050E-02 -1.092E+01 . *. +. . .
1.100E-02 -1.265E+01 . * . . + . .
1.150E-02 -1.392E+01 . * . . + . .
1.200E-02 -1.472E+01 . * . . + . .
1.250E-02 -1.497E+01 . * . . + . .
1.300E-02 -1.473E+01 . * . . + . .
1.350E-02 -1.392E+01 . * . . + . .
1.400E-02 -1.266E+01 . * . . + . .
1.450E-02 -1.091E+01 . *. +. . .
1.500E-02 -8.814E+00 . . * + . . .
1.550E-02 -6.374E+00 . + * . . .
1.600E-02 -3.727E+00 . + . * . . .
1.650E-02 -9.404E-01 .+ . *. . .
1.700E-02 1.880E+00 . + . . * . .
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** FOURIER ANALYSIS TEMPERATURE = 27.000 DEG C
***********************************************************************
FOURIER COMPONENTS OF TRANSIENT RESPONSE V(2,3)
DC COMPONENT = 8.294E+00
HARMONIC FREQUENCY FOURIER NORMALIZED PHASE NORMALIZED
NO (HZ) COMPONENT COMPONENT (DEG) PHASE (DEG)
1 6.000E+01 4.134E-03 1.000000 109.967 0.000
2 1.200E+02 6.213E+00 1503.001102 -75.620 -185.588
3 1.800E+02 4.711E-03 1.139608 137.077 27.109
4 2.400E+02 1.159E+00 280.425460 -61.412 -171.380
5 3.000E+02 5.575E-03 1.348548 158.142 48.174
6 3.600E+02 4.459E-01 107.855080 -47.527 -157.494
7 4.200E+02 7.568E-03 1.830629 -168.855 -278.822
8 4.800E+02 2.147E-01 51.928957 -34.592 -144.560
9 5.400E+02 7.739E-03 1.872056 -165.930 -275.898
TOTAL HARMONIC DISTORTION = ************ PERCENT
JOB CONCLUDED
TOTAL JOB TIME 0.00
What am I doing wrong in attempts to simulate an example circuits with FFT? Why do my results not correspond to these ones in the book? With earlier simulations everything matched excellently!
Huge thanks for any decent explanations!
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** INPUT LISTING TEMPERATURE = 27.000 DEG C
***********************************************************************
V1 1 0 SIN(0 15 60 0 0)
RLOAD 2 3 10K
D1 1 2 MOD1
D2 0 2 MOD1
D3 3 1 MOD1
D4 3 0 MOD1
.MODEL MOD1 D
.TRAN .5M 17M
.PLOT TRAN V(1,0) V(2,3)
.FOUR 60 V(2,3)
.END
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** DIODE MODEL PARAMETERS TEMPERATURE = 27.000 DEG C
***********************************************************************
MOD1
IS 1.00E-14
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** INITIAL TRANSIENT SOLUTION TEMPERATURE = 27.000 DEG C
***********************************************************************
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
( 1) 0.0000 ( 2) 0.0000 ( 3) 0.0000
VOLTAGE SOURCE CURRENTS
NAME CURRENT
V1 2.789E-40
TOTAL POWER DISSIPATION: 0.00E+00 WATTS
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** OPERATING POINT INFORMATION TEMPERATURE = 27.000 DEG C
***********************************************************************
**** DIODES
D1 D2 D3 D4
MODEL MOD1 MOD1 MOD1 MOD1
ID 4.35E-21 4.35E-21 4.35E-21 4.35E-21
VD 0.000 0.000 0.000 0.000
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** TRANSIENT ANALYSIS TEMPERATURE = 27.000 DEG C
***********************************************************************
LEGEND:
*: V(1)
+: V(2,3)
TIME V(1)
*)------------- -2.000E+01 -1.000E+01 0.000E+00 1.000E+01 2.000E+01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+)------------- 0.000E+00 5.000E+00 1.000E+01 1.500E+01 2.000E+01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
0.000E+00 0.000E+00 + . * . .
5.000E-04 2.807E+00 . + . . * . .
1.000E-03 5.512E+00 . + . . * . .
1.500E-03 8.029E+00 . . + . * . .
2.000E-03 1.025E+01 . . + . * .
2.500E-03 1.213E+01 . . . + . * .
3.000E-03 1.354E+01 . . . + . * .
3.500E-03 1.453E+01 . . . + . * .
4.000E-03 1.494E+01 . . . + . * .
4.500E-03 1.488E+01 . . . + . * .
5.000E-03 1.424E+01 . . . + . * .
5.500E-03 1.313E+01 . . . + . * .
6.000E-03 1.154E+01 . . .+ . * .
6.500E-03 9.550E+00 . . + . *. .
7.000E-03 7.214E+00 . . + . * . .
7.500E-03 4.628E+00 . + . . * . .
8.000E-03 1.878E+00 . + . . * . .
8.500E-03 -9.415E-01 + . *. . .
9.000E-03 -3.723E+00 . + . * . . .
9.500E-03 -6.378E+00 . + * . . .
1.000E-02 -8.803E+00 . . * + . . .
1.050E-02 -1.092E+01 . *. +. . .
1.100E-02 -1.265E+01 . * . . + . .
1.150E-02 -1.392E+01 . * . . + . .
1.200E-02 -1.472E+01 . * . . + . .
1.250E-02 -1.497E+01 . * . . + . .
1.300E-02 -1.473E+01 . * . . + . .
1.350E-02 -1.392E+01 . * . . + . .
1.400E-02 -1.266E+01 . * . . + . .
1.450E-02 -1.091E+01 . *. +. . .
1.500E-02 -8.814E+00 . . * + . . .
1.550E-02 -6.374E+00 . + * . . .
1.600E-02 -3.727E+00 . + . * . . .
1.650E-02 -9.404E-01 .+ . *. . .
1.700E-02 1.880E+00 . + . . * . .
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
******* 01/12/11 ******** SPICE 2G.6 15/3/83 ******** 14:30:07 ****
**** FULLWAVE BRIDGE RECTIFIER
**** FOURIER ANALYSIS TEMPERATURE = 27.000 DEG C
***********************************************************************
FOURIER COMPONENTS OF TRANSIENT RESPONSE V(2,3)
DC COMPONENT = 8.294E+00
HARMONIC FREQUENCY FOURIER NORMALIZED PHASE NORMALIZED
NO (HZ) COMPONENT COMPONENT (DEG) PHASE (DEG)
1 6.000E+01 4.134E-03 1.000000 109.967 0.000
2 1.200E+02 6.213E+00 1503.001102 -75.620 -185.588
3 1.800E+02 4.711E-03 1.139608 137.077 27.109
4 2.400E+02 1.159E+00 280.425460 -61.412 -171.380
5 3.000E+02 5.575E-03 1.348548 158.142 48.174
6 3.600E+02 4.459E-01 107.855080 -47.527 -157.494
7 4.200E+02 7.568E-03 1.830629 -168.855 -278.822
8 4.800E+02 2.147E-01 51.928957 -34.592 -144.560
9 5.400E+02 7.739E-03 1.872056 -165.930 -275.898
TOTAL HARMONIC DISTORTION = ************ PERCENT
JOB CONCLUDED
TOTAL JOB TIME 0.00