help .!!.. singular matrix ...

[news]

My simulator posted a message " [Warning] RF XSpice singular matrix: check
nodes netc1_1 and netc1_1 10:45:37 PM 2003/8/11 1"

Some body can tell me ,where the error.
My simulate code is following...

RF
*SPICE Netlist generated by Advanced Sim server on 2003/8/11 ¤U¤Č 10:45:01

*Schematic Netlist:
C1 NetC1_1 0 1uF
C2 0 NetC2_2 1uF
C3 NetC2_2 NetC3_2 100pF
C5 NetC5_1 0 100pF
C9 NetC9_1 NetC1_1 100pF
L1 NetC1_1 NetC2_2 10mH
Q1 NetC9_1 NetC3_2 NetC5_1 2N2222A
R1 NetR1_1 NetC3_2 470K
R2 NetR1_1 NetC9_1 51K
R3 NetC3_2 0 51K
R4 NetC5_1 0 100
V1 NetR1_1 NetV1_2 +12
V2 NetV1_2 0 DC 0 PWL() AC 1 0

..SAVE 0 NetC1_1 NetC2_2 NetC3_2 NetC5_1 NetC9_1 NetR1_1 NetV1_2 V1#branch
..SAVE V2#branch @V1[z] @V2[z] @C1 @C2 @C3 @C5 @C9 @L1
@Q1[ib]
..SAVE @Q1[ic] @Q1[ie] @R1 @R2 @R3 @R4 @C1[p] @C2[p] @C3[p]
@C5[p] @C9[p]
..SAVE @L1[p] @Q1[p] @R1[p] @R2[p] @R3[p] @R4[p] @V1[p] @V2[p]

*PLOT TRAN -1 1 A=@C? A=@C?[p] A=@C1 A=@C1[p] A=@C2 A=@C2[p]
A=@C5
*PLOT TRAN -1 1 A=@C5[p] A=@L1 A=@L1[p] A=NetC?_1 A=NetC1_1 A=NetC2_2
A=NetC5_1
*PLOT TRAN -1 1 A=NetR1_1 A=@Q1[ib] A=@Q1[ic] A=@Q1[ie] A=@Q1[p] A=@R1
A=@R1[p]
*PLOT TRAN -1 1 A=@R2 A=@R2[p] A=@R3 A=@R3[p] A=@R4 A=@R4[p]
A=V1#branch
*PLOT TRAN -1 1 A=@V1[p] A=@V1[z]
*PLOT OP -1 1 A=@C? A=@C?[p] A=@C1 A=@C1[p] A=@C2 A=@C2[p] A=@C5
*PLOT OP -1 1 A=@C5[p] A=@L1 A=@L1[p] A=NetC?_1 A=NetC1_1 A=NetC2_2
A=NetC5_1
*PLOT OP -1 1 A=NetR1_1 A=@Q1[ib] A=@Q1[ic] A=@Q1[ie] A=@Q1[p] A=@R1
A=@R1[p]
*PLOT OP -1 1 A=@R2 A=@R2[p] A=@R3 A=@R3[p] A=@R4 A=@R4[p]
A=V1#branch
*PLOT OP -1 1 A=@V1[p] A=@V1[z]

*Selected Circuit Analyses:
..TRAN 2E-8 5E-6 0 2E-8
..OP

*Models and Subcircuit:
..MODEL 2N2222A NPN(IS=8.11E-14 BF=205 VAF=113 IKF=0.5 ISE=1.06E-11 NE=2 BR=4
+ VAR=24 IKR=0.225 RB=1.37 RE=0.343 RC=0.137 CJE=2.95E-11 TF=3.97E-10
CJC=1.52E-11
+ TR=8.5E-8 XTB=1.5 )

..END

 

[Mike Engelhardt]

If you it in LTspice it sort of runs, but
its circuit topology checker notes that node
NETC2_2 is floating. Give that node a DC path
to ground an the circuit will compute fine.

--Mike

"news" <showrain@ms11.hinet.net> wrote in message news:bh8ai0$kce@netnews.hinet.net...

RF XSpice singular matrix: check
nodes netc1_1 and netc1_1 10:45:37 PM 2003/8/11 1"

Some body can tell me ,where the error.
My simulate code is following...

RF
*SPICE Netlist generated by Advanced Sim server on 2003/8/11 ¤U¤Č 10:45:01

*Schematic Netlist:
C1 NetC1_1 0 1uF
C2 0 NetC2_2 1uF
C3 NetC2_2 NetC3_2 100pF
C5 NetC5_1 0 100pF
C9 NetC9_1 NetC1_1 100pF
L1 NetC1_1 NetC2_2 10mH
Q1 NetC9_1 NetC3_2 NetC5_1 2N2222A
R1 NetR1_1 NetC3_2 470K
R2 NetR1_1 NetC9_1 51K
R3 NetC3_2 0 51K
R4 NetC5_1 0 100
V1 NetR1_1 NetV1_2 +12
V2 NetV1_2 0 DC 0 PWL() AC 1 0

.SAVE 0 NetC1_1 NetC2_2 NetC3_2 NetC5_1 NetC9_1 NetR1_1 NetV1_2 V1#branch
.SAVE V2#branch @V1[z] @V2[z] @C1 @C2 @C3 @C5 @C9 @L1
@Q1[ib]
.SAVE @Q1[ic] @Q1[ie] @R1 @R2 @R3 @R4 @C1[p] @C2[p] @C3[p]
@C5[p] @C9[p]
.SAVE @L1[p] @Q1[p] @R1[p] @R2[p] @R3[p] @R4[p] @V1[p] @V2[p]

*PLOT TRAN -1 1 A=@C? A=@C?[p] A=@C1 A=@C1[p] A=@C2 A=@C2[p]
A=@C5
*PLOT TRAN -1 1 A=@C5[p] A=@L1 A=@L1[p] A=NetC?_1 A=NetC1_1 A=NetC2_2
A=NetC5_1
*PLOT TRAN -1 1 A=NetR1_1 A=@Q1[ib] A=@Q1[ic] A=@Q1[ie] A=@Q1[p] A=@R1
A=@R1[p]
*PLOT TRAN -1 1 A=@R2 A=@R2[p] A=@R3 A=@R3[p] A=@R4 A=@R4[p]
A=V1#branch
*PLOT TRAN -1 1 A=@V1[p] A=@V1[z]
*PLOT OP -1 1 A=@C? A=@C?[p] A=@C1 A=@C1[p] A=@C2 A=@C2[p] A=@C5
*PLOT OP -1 1 A=@C5[p] A=@L1 A=@L1[p] A=NetC?_1 A=NetC1_1 A=NetC2_2
A=NetC5_1
*PLOT OP -1 1 A=NetR1_1 A=@Q1[ib] A=@Q1[ic] A=@Q1[ie] A=@Q1[p] A=@R1
A=@R1[p]
*PLOT OP -1 1 A=@R2 A=@R2[p] A=@R3 A=@R3[p] A=@R4 A=@R4[p]
A=V1#branch
*PLOT OP -1 1 A=@V1[p] A=@V1[z]

*Selected Circuit Analyses:
.TRAN 2E-8 5E-6 0 2E-8
.OP

*Models and Subcircuit:
.MODEL 2N2222A NPN(IS=8.11E-14 BF=205 VAF=113 IKF=0.5 ISE=1.06E-11 NE=2 BR=4
+ VAR=24 IKR=0.225 RB=1.37 RE=0.343 RC=0.137 CJE=2.95E-11 TF=3.97E-10
CJC=1.52E-11
+ TR=8.5E-8 XTB=1.5 )

.END