Diode-Bridge Voltage-Controlled Attenuator - simulation/results/large_vc_1.log

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John Lauer Saif Abdessayed's diode-bridge VCA: KiCad project, Gerbers, BOM, simulations, reports, and the earlier RC filter test 45f3ff6 11d ago

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Note: No compatibility mode selected!


Circuit: * diode-bridge voltage-controlled attenuator

Doing analysis at TEMP = 27.000000 and TNOM = 27.000000

Using SPARSE 1.3 as Direct Linear Solver

Initial Transient Solution
--------------------------

Node                                   Voltage
----                                   -------
vcc                                         12
vee                                        -12
ctrl                                         1
ctrlf                                 0.990099
in                                           0
bufin                                        0
buf                                          0
out                                          0
bra                                    8.84433
bra_i                                  8.84433
brb_i                                  8.84433
brb                                    8.84433
brp                                    9.31507
brn                                    8.37367
opout                                  1.60415
sense                                 0.990083
base                                   1.59874
bop#branch                        -1.15038e-06
e_buf#branch                                 0
vin#branch                                   0
vctrl#branch                      -9.90099e-07
vee#branch                                   0
vcc#branch                        -0.000122042


No. of Data Rows : 20001

  Measurements for Transient Analysis

vout_pp             =  1.071387e+01 from=  2.000000e-02 to=  3.000000e-02
vin_pp              =  1.199998e+01 from=  2.000000e-02 to=  3.000000e-02
gain                =  8.92823e-01

Fourier analysis for v(out):
  No. Harmonics: 10, THD: 3.29864 %, Gridsize: 200, Interpolation Degree: 1

Harmonic Frequency   Magnitude   Phase       Norm. Mag   Norm. Phase
-------- ---------   ---------   -----       ---------   -----------
 0       0           0.151077    0           0           0          
 1       1000        5.28936     -0.0075477  1           0          
 2       2000        0.110017    -90.041     0.0207997   -90.033    
 3       3000        0.104595    -179.93     0.0197747   -179.93    
 4       4000        0.0219493   -90.108     0.0041497   -90.1      
 5       5000        0.0619747   -179.97     0.0117169   -179.96    
 6       6000        0.00942467  -90.175     0.00178181  -90.168    
 7       7000        0.0433804   179.994     0.00820143  180.002    
 8       8000        0.00525032  -90.237     0.000992618 -90.23     
 9       9000        0.0328237   179.954     0.00620561  179.962    




Total analysis time (seconds) = 0.246

Total elapsed time (seconds) = 0.255 

Total DRAM available = 3647.488 MB.
DRAM currently available =  561.578 MB.
Maximum ngspice program size =   22.191 MB.
Current ngspice program size =   14.301 MB.

Shared ngspice pages =   11.668 MB.
Text (code) pages =    6.156 MB.
Stack = 0 bytes.
Library pages =    2.945 MB.