*version 8.0 838612957
u 287
E? 3
R? 5
V? 3
@libraries
@analysis
.DC 1 0 0 0 1 1
+ 0 0 vI
+ 0 4 -1.5V
+ 0 5 1.5V
+ 0 6 10mV
.TRAN 0 0 0 0
+0 100u
+1 2m
+2 0
+3 100u
@targets
@attributes
@translators
a 0 u 13 0 0 0 hln 100 TANGO=PCB
a 0 u 13 0 0 0 hln 100 SCICARDS=PCB
a 0 u 13 0 0 0 hln 100 PROTEL=PCB
a 0 u 13 0 0 0 hln 100 PCAD=PCB
a 0 u 13 0 0 0 hln 100 PADS=PCB
a 0 u 13 0 0 0 hln 100 ORCAD=PCB
a 0 u 13 0 0 0 hln 100 EDIF=PCB
a 0 u 13 0 0 0 hln 100 CADSTAR=PCB
a 0 u 13 0 0 0 hln 100 PSPICE=PSPICE
a 0 u 13 0 0 0 hln 100 XILINX=XILINX
a 0 u 13 0 0 0 hln 100 PCBOARDS=PCB
@setup
unconnectedPins 0
connectViaLabel 0
connectViaLocalLabels 0
NoStim4ExtIFPortsWarnings 1
AutoGenStim4ExtIFPorts 1
@index
pageloc 1 0 2371 
@status
n 0 100:00:01:00:18:24;946714704 e 
s 0 100:00:01:00:18:53;946714733 e 
*page 1 0 970 720 iA
@ports
port 249 AGND 420 220 h
port 282 AGND 310 250 h
@parts
part 3 EVALUE 370 210 h
a 0 x 0:13 0 0 0 hln 100 PKGREF=E1
a 1 xp 9 0 18 2 hln 100 REFDES=E1
a 0 sp 11 0 -76 -12 hln 100 PART=EVALUE
a 0 u 13 0 -30 -12 hln 100 EXPR={10*((exp(2e4*v(2,1))-1)/(exp(2e4*v(2,1))+1))}
part 5 r 420 250 u
a 0 u 13 0 25 3 hln 100 VALUE=9k
a 0 sp 0 0 0 10 hlb 100 PART=r
a 0 s 0:13 0 0 0 hln 100 PKGTYPE=RC05
a 0 s 0:13 0 0 0 hln 100 GATE=
a 0 x 0:13 0 0 0 hln 100 PKGREF=R2
a 0 xp 9 0 27 26 hln 100 REFDES=R2
part 270 R 320 250 h
a 0 sp 0 0 0 10 hlb 100 PART=R
a 0 s 0:13 0 0 0 hln 100 PKGTYPE=RC05
a 0 s 0:13 0 0 0 hln 100 GATE=
a 0 x 0:13 0 0 0 hln 100 PKGREF=R1
a 0 xp 9 0 15 4 hln 100 REFDES=R1
part 70 vdc 310 210 h
a 0 sp 0 0 22 37 hln 100 PART=vdc
a 1 u 13 0 -11 34 hcn 100 DC=0V
a 0 x 0:13 0 0 0 hln 100 PKGREF=vI
a 1 xp 9 0 -12 15 hcn 100 REFDES=vI
part 1 titleblk 970 720 h
a 1 s 13 0 350 10 hcn 100 PAGESIZE=A
a 1 s 13 0 180 60 hcn 100 PAGETITLE=
a 1 s 13 0 340 95 hrn 100 PAGECOUNT=1
a 1 s 13 0 300 95 hrn 100 PAGENO=1
@conn
w 261
a 0 sr 0 0 0 0 hln 100 LABEL=vO
a 0 up 0:33 0 0 0 hln 100 V=
s 440 250 440 210 262
a 0 sr 3 0 442 230 hln 100 LABEL=vO
a 0 up 33 0 442 231 hlt 100 V=
s 440 210 420 210 264
s 420 250 440 250 260
w 257
a 0 sr 0 0 0 0 hln 100 LABEL=1
a 0 up 0:33 0 0 0 hln 100 V=
s 370 220 370 250 256
a 0 sr 3 0 372 235 hln 100 LABEL=1
a 0 up 33 0 372 236 hlt 100 V=
s 370 250 380 250 258
s 360 250 370 250 271
w 277
a 0 up 0:33 0 0 0 hln 100 V=
s 310 250 310 240 276
a 0 up 33 0 312 245 hlt 100 V=
s 310 250 320 250 283
w 253
a 0 sr 0 0 0 0 hln 100 LABEL=2
a 0 up 0:33 0 0 0 hln 100 V=
s 310 210 370 210 285
a 0 up 33 0 374 209 hct 100 V=
a 0 sr 3 0 374 208 hcn 100 LABEL=2
@junction
j 420 220
+ s 249
+ p 3 OUT-
j 370 210
+ p 3 IN+
+ w 253
j 370 220
+ p 3 IN-
+ w 257
j 420 210
+ p 3 OUT+
+ w 261
j 380 250
+ p 5 2
+ w 257
j 420 250
+ p 5 1
+ w 261
j 360 250
+ p 270 2
+ w 257
j 370 250
+ w 257
+ w 257
j 310 250
+ p 70 -
+ w 277
j 310 250
+ s 282
+ p 70 -
j 310 250
+ s 282
+ w 277
j 320 250
+ p 270 1
+ w 277
j 310 210
+ p 70 +
+ w 253
@attributes
a 0 s 0:13 0 0 0 hln 100 PAGETITLE=
a 0 s 0:13 0 0 0 hln 100 PAGENO=1
a 0 s 0:13 0 0 0 hln 100 PAGESIZE=A
a 0 s 0:13 0 0 0 hln 100 PAGECOUNT=1
@graphics
t 118 t 5 330 305 455 321 0 29
Circuit to Plot Fig. 1.23b.  
t 189 t 5 290 324 489 342 0 41
Top Trace: V(vO);  Bottom Trace: D(V(vO))