Diode-Bridge Voltage-Controlled Attenuator - simulation/results/large_vc_0.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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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                                         0
ctrlf                                        0
in                                           0
bufin                                        0
buf                                          0
out                                          0
bra                                    11.8059
bra_i                                  11.8059
brb_i                                  11.8059
brb                                    11.8059
brp                                    11.9896
brn                                    11.6743
opout                             -6.27596e-06
sense                              6.27596e-11
base                              -6.22105e-06
bop#branch                         1.16835e-11
e_buf#branch                                 0
vin#branch                                   0
vctrl#branch                                 0
vee#branch                                   0
vcc#branch                         -4.7278e-07


No. of Data Rows : 20001

  Measurements for Transient Analysis

vout_pp             =  1.123799e+01 from=  2.000000e-02 to=  3.000000e-02
vin_pp              =  1.199998e+01 from=  2.000000e-02 to=  3.000000e-02
gain                =  9.36501e-01

Fourier analysis for v(out):
  No. Harmonics: 10, THD: 1.97245 %, Gridsize: 200, Interpolation Degree: 1

Harmonic Frequency   Magnitude   Phase       Norm. Mag   Norm. Phase
-------- ---------   ---------   -----       ---------   -----------
 0       0           0.151974    0           0           0          
 1       1000        5.62231     -0.0062471  1           0          
 2       2000        0.108338    -90.037     0.0192693   -90.031    
 3       3000        0.00492801  -1.0868     0.00087651  -1.0805    
 4       4000        0.0207972   -90.099     0.00369906  -90.092    
 5       5000        0.00258502  -0.7333     0.000459779 -0.72706   
 6       6000        0.00853737  -90.179     0.00151848  -90.173    
 7       7000        0.00166382  -0.38882    0.000295932 -0.38257   
 8       8000        0.00452865  -90.29      0.00080548  -90.284    
 9       9000        0.00118401  -0.075455   0.000210591 -0.069208  




Total analysis time (seconds) = 0.239

Total elapsed time (seconds) = 0.244 

Total DRAM available = 3647.488 MB.
DRAM currently available =  569.441 MB.
Maximum ngspice program size =   22.195 MB.
Current ngspice program size =   14.281 MB.

Shared ngspice pages =   11.648 MB.
Text (code) pages =    6.156 MB.
Stack = 0 bytes.
Library pages =    2.949 MB.