bjt and diode: examples for plotting small signal parameters in a dc sweep

examples/various/bjt_ac_par.sp

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+Plot inner small signal parameter
+
+v1 1 0 dc 10.0
+rc 1 c 2k
+vb b 0 dc 0.6
+q1 c b 0 bfs17
+
+.MODEL BFS17 NPN (level=1 IS=0.48F NF=1.008 BF=99.655 VAF=90.000 IKF=0.190
++ ISE=7.490F NE=1.762 NR=1.010 BR=38.400 VAR=7.000 IKR=93.200M
++ ISC=0.200F NC=1.042
++ RB=1.500 IRB=0.100M RBM=1.200
++ RE=0.500 RC=2.680
++ CJE=1.325P VJE=0.700 MJE=0.220 FC=0.890
++ CJC=1.050P VJC=0.610 MJC=0.240 XCJC=0.400
++ TF=56.940P TR=1.000N PTF=21.000
++ XTF=68.398 VTF=0.600 ITF=0.700
++ XTB=1.600 EG=1.110 XTI=3.000
++ KF=1.000F AF=1.000)
+
+.control
+save @q1[gm] @q1[pi] @q1[go]
+save @q1[qbe] @q1[qbc]
+save @q1[cmu] @q1[cpi]
+dc vb 0.4 1 0.01
+plot @q1[gm] @q1[gpi] @q1[go]
+plot @q1[qbe] @q1[qbc]
+plot @q1[cmu] @q1[cpi]
+.endc
+
+.end

examples/various/diode_ac_par.sp

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+Plot inner small signal parameter
+
+v1 1 0 dc 0
+d1 1 0 myd
+.model myd D(IS = 1.50E-07
++ N = 1.0
++ RS = 9
++ TT = 100n
++ CJ0 = 1.01p
++ VJ = 0.44
++ M = 0.5
++ EG = 1.11
++ XTI = 3
++ KF = 0
++ AF = 1
++ FC = 0.5
++ BV = 22
++ IBV = 10u)
+
+.control
+save @d1[gd] @d1[cd] @d1[charge]
+dc v1 -5 .1 0.01
+plot @d1[gd]
+plot @d1[cd]
+plot @d1[charge]
+.endc
+*
+.END