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003_ac_sim : AC analysis

003_ac_sim : AC analysis

003_ac_sim : AC analysis

Requires: SmartSpice & Smartview

Minimum Versions: SMARTSPICE 3.16.12.R

The input deck uses AC analysis and several sweeps in parameter values to see response in a simple circuit. The results of the .MEASURE statement are stored in a separate output file which is distinctly separate from the RAW file.

To run the simulation, Source the deck and press the green run button. When the simulation completes, the results are shown in SmartSpice log Window.

Input Files

multiple_sweep_ac.in — view contents
****** MULTI_SWEEP_AC ******

.options nomod  post=1 savemeasureout 

vin 1 0 dc 1 ac acmag= 'mag*1'  acphase='ph-2'
r1  1 2 parr 
r2  2 0 100
c1  2 0 'capac/10'
** ******************* Label Definition
.PARAM parr=100 pstart=100 incr=pstart mag=1 ph=2  capac=10n
** ******************* AC + SWEEP
.ac dec 10 10K 100meg     
+     SWEEP  parr 100 200 100  sweep capac 10n 20n 10n    

.meas ac cross_pt cross v(2) val=0.1 from=100k to=20Meg 

.end
multiple_sweep_ac_measure.out — view contents
SmartSpice v. 3.16.12.R
                      ****** MULTI_SWEEP_AC ******
AC Analysis, 27 deg C, step parr = 100, step capac = 1e-008,Thu Aug 19 18:21:29 2010

cross_pt       =  1.5640e+007
                      ****** MULTI_SWEEP_AC ******
AC Analysis, 27 deg C, step parr = 200, step capac = 1e-008,Thu Aug 19 18:21:29 2010

cross_pt       =  7.6422e+006
                      ****** MULTI_SWEEP_AC ******
AC Analysis, 27 deg C, step parr = 100, step capac = 2e-008,Thu Aug 19 18:21:29 2010

cross_pt       =  7.8231e+006
                      ****** MULTI_SWEEP_AC ******
AC Analysis, 27 deg C, step parr = 200, step capac = 2e-008,Thu Aug 19 18:21:29 2010

cross_pt       =  3.8222e+006
003_ac_sim — view contents
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