Diode-Bridge Voltage-Controlled Attenuator - simulation/results/small_vc_0p5.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                                       0.5
ctrlf                                  0.49505
in                                           0
bufin                                        0
buf                                          0
out                                          0
bra                                     10.217
bra_i                                   10.217
brb_i                                   10.217
brb                                     10.217
brp                                    10.6536
brn                                    9.78053
opout                                  1.08807
sense                                 0.495039
base                                   1.08511
bop#branch                        -6.29348e-07
e_buf#branch                                 0
vin#branch                                   0
vctrl#branch                       -4.9505e-07
vee#branch                                   0
vcc#branch                        -6.11985e-05


No. of Data Rows : 10001

  Measurements for Transient Analysis

vout_pp             =  4.185565e-02 from=  2.000000e-02 to=  3.000000e-02
vin_pp              =  9.999938e-02 from=  2.000000e-02 to=  3.000000e-02
gain                =  4.18559e-01

Fourier analysis for v(out):
  No. Harmonics: 10, THD: 0.259817 %, Gridsize: 200, Interpolation Degree: 1

Harmonic Frequency   Magnitude   Phase       Norm. Mag   Norm. Phase
-------- ---------   ---------   -----       ---------   -----------
 0       0           4.25891e-05 0           0           0          
 1       1000        0.0208848   -0.032714   1           0          
 2       2000        3.36654e-05 -90.015     0.00161196  -89.982    
 3       3000        4.25554e-05 -179.96     0.00203763  -179.93    
 4       4000        2.37061e-07 89.1326     1.13509e-05 89.1653    
 5       5000        7.46421e-08 0.103751    3.57399e-06 0.136465   
 6       6000        2.34866e-09 -12.036     1.12458e-07 -12.003    
 7       7000        2.05338e-09 6.44355     9.83196e-08 6.47626    
 8       8000        1.72318e-09 7.30784     8.25087e-08 7.34055    
 9       9000        1.54164e-09 7.31165     7.38164e-08 7.34436    




Total analysis time (seconds) = 0.129

Total elapsed time (seconds) = 0.132 

Total DRAM available = 3647.488 MB.
DRAM currently available =  571.852 MB.
Maximum ngspice program size =   21.945 MB.
Current ngspice program size =   14.023 MB.

Shared ngspice pages =   11.590 MB.
Text (code) pages =    6.156 MB.
Stack = 0 bytes.
Library pages =    2.699 MB.