Diode-Bridge Voltage-Controlled Attenuator - simulation/results/large_vc_1p5.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                                       1.5
ctrlf                                  1.48515
in                                           0
bufin                                        0
buf                                          0
out                                          0
bra                                     7.4854
bra_i                                   7.4854
brb_i                                   7.4854
brb                                     7.4854
brp                                    7.97611
brn                                    6.99474
opout                                  2.11269
sense                                  1.48513
base                                   2.10492
bop#branch                        -1.65412e-06
e_buf#branch                                 0
vin#branch                                   0
vctrl#branch                      -1.48515e-06
vee#branch                                   0
vcc#branch                        -0.000182904


No. of Data Rows : 20001

  Measurements for Transient Analysis

vout_pp             =  1.046220e+01 from=  2.000000e-02 to=  3.000000e-02
vin_pp              =  1.199998e+01 from=  2.000000e-02 to=  3.000000e-02
gain                =  8.71851e-01

Fourier analysis for v(out):
  No. Harmonics: 10, THD: 4.43732 %, Gridsize: 200, Interpolation Degree: 1

Harmonic Frequency   Magnitude   Phase       Norm. Mag   Norm. Phase
-------- ---------   ---------   -----       ---------   -----------
 0       0           0.145786    0           0           0          
 1       1000        5.12967     -0.0079083  1           0          
 2       2000        0.109944    -90.042     0.0214329   -90.034    
 3       3000        0.156563    -179.96     0.030521    -179.95    
 4       4000        0.0217736   -90.11      0.00424464  -90.102    
 5       5000        0.0917895   -179.99     0.0178938   -179.98    
 6       6000        0.00920715  -90.173     0.00179488  -90.165    
 7       7000        0.0632696   179.982     0.0123341   179.99     
 8       8000        0.00500737  -90.224     0.000976158 -90.216    
 9       9000        0.0468919   179.948     0.00914131  179.956    




Total analysis time (seconds) = 0.284

Total elapsed time (seconds) = 0.289 

Total DRAM available = 3647.488 MB.
DRAM currently available =  561.613 MB.
Maximum ngspice program size =   22.195 MB.
Current ngspice program size =   14.160 MB.

Shared ngspice pages =   11.523 MB.
Text (code) pages =    6.156 MB.
Stack = 0 bytes.
Library pages =    2.949 MB.