Diode-Bridge Voltage-Controlled Attenuator - simulation/results/large_vc_2.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                                         2
ctrlf                                   1.9802
in                                           0
bufin                                        0
buf                                          0
out                                          0
bra                                    6.13215
bra_i                                  6.13215
brb_i                                  6.13215
brb                                    6.13215
brp                                     6.6371
brn                                    5.62722
opout                                  2.61819
sense                                  1.98017
base                                   2.60806
bop#branch                        -2.15581e-06
e_buf#branch                                 0
vin#branch                                   0
vctrl#branch                       -1.9802e-06
vee#branch                                   0
vcc#branch                        -0.000243768


No. of Data Rows : 20001

  Measurements for Transient Analysis

vout_pp             =  1.021094e+01 from=  2.000000e-02 to=  3.000000e-02
vin_pp              =  1.199998e+01 from=  2.000000e-02 to=  3.000000e-02
gain                =  8.50913e-01

Fourier analysis for v(out):
  No. Harmonics: 10, THD: 5.69446 %, Gridsize: 200, Interpolation Degree: 1

Harmonic Frequency   Magnitude   Phase       Norm. Mag   Norm. Phase
-------- ---------   ---------   -----       ---------   -----------
 0       0           0.140422    0           0           0          
 1       1000        4.97051     -0.0083799  1           0          
 2       2000        0.109613    -90.044     0.0220526   -90.035    
 3       3000        0.20759     -179.97     0.0417643   -179.96    
 4       4000        0.021374    -90.114     0.00430015  -90.105    
 5       5000        0.120131    -179.99     0.0241687   -179.98    
 6       6000        0.00878118  -90.174     0.00176665  -90.165    
 7       7000        0.0811844   179.98      0.0163332   179.988    
 8       8000        0.00456618  -90.209     0.000918654 -90.201    
 9       9000        0.0585492   179.949     0.0117793   179.958    




Total analysis time (seconds) = 0.231

Total elapsed time (seconds) = 0.239 

Total DRAM available = 3647.488 MB.
DRAM currently available =  561.395 MB.
Maximum ngspice program size =   22.199 MB.
Current ngspice program size =   14.145 MB.

Shared ngspice pages =   11.508 MB.
Text (code) pages =    6.156 MB.
Stack = 0 bytes.
Library pages =    2.953 MB.