* Z:\home\khalils\Downloads\files\data\raw_asc\9759abbc4484_LPS2.asc
* Generated by LTspice 26.0.1 for Windows.
D1 0 Vref 1N4735A
Q1 N002 N007 N008 0 2N4401
R3 Vout N007 270
R4 N007 0 560
XQ2 Vin N002 N001 tip102 ;pnba C)B)E
V1 Vin 0 SINE(15 3 1)
R5 Vout N001 .33
Q3 N002 N001 Vout 0 2N4401
R6 Vout 0 {R6}
D2 Vin N003 1N4148
D4 N003 N004 1N4148
Q4 Vref N004 P001 0 2N4403
R1 Vin P001 12
R8 N006 0 9.1k
R9 Vref N006 1
V2 Shutoff 0 5
Q8 N002 N004 P002 0 2N4403
R2 Vin P002 47
Q10 Vin N006 N008 0 2N4401
Q6 N009 P003 0 0 2N4401
Q12 N005 N009 0 0 MPSA14
R10 Vin N009 4.7Meg
R11 P003 Shutoff 10k
R15 N004 N005 1k
R16 N008 0 100
.model D D
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.dio
.model NPN NPN
.model PNP PNP
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.bjt
.tran 0 1 0 .1
.SUBCKT tip102 1 2 3
**************************************
* Model Generated by MODPEX *
*Copyright(c) Symmetry Design Systems*
* All Rights Reserved *
* UNPUBLISHED LICENSED SOFTWARE *
* Contains Proprietary Information *
* Which is The Property of *
* SYMMETRY OR ITS LICENSORS *
*Commercial Use or Resale Restricted *
* by Symmetry License Agreement *
**************************************
* Model generated on Jan 20, 03
* MODEL FORMAT: SPICE3
* Darlington macro model
* External node designations
* Node 1 -> Collect
* Node 2 -> Base
* Node 3 -> Emitter
Q1 1 2 4 qmodel
Q2 1 4 3 q1model area=11.2198
D1 3 1 dmodel
R1 2 4 8000
R2 4 3 120
* Default values used in dmodel
* EG=1.11 TT=0 BV=infinite
.MODEL dmodel d
+IS=1e-12 RS=10 N=1 XTI=3
+CJO=0 VJ=0.75 M=0.33 FC=0.5
.MODEL qmodel npn
+IS=2.88485e-13 BF=126.335 NF=1.2 VAF=30
+IKF=0.132527 ISE=6.51929e-12 NE=1.9601 BR=0.100001
+NR=1.5 VAR=300 IKR=0.0843484 ISC=1.01027e-13
+NC=1.92564 RB=2.61873 IRB=0.2 RBM=2.61873
+RE=0.0001 RC=2.60372 XTB=0 XTI=4 EG=1.206
+CJE=1.13087e-10 VJE=0.95 MJE=0.692676 TF=1e-09
+XTF=1 VTF=10 ITF=0.01 CJC=1.56651e-10
+VJC=0.908287 MJC=0.23 XCJC=0.897966 FC=0.5
+TR=1e-07 PTF=0 KF=0 AF=1
.MODEL q1model npn
+IS=2.88485e-13 BF=126.335 NF=1.2 VAF=30
+IKF=0.132527 ISE=6.51929e-12 NE=1.9601 BR=0.100001
+NR=1.5 VAR=300 IKR=0.0843484 ISC=1.01027e-13
+NC=1.92564 RB=2.61873 IRB=0.2 RBM=2.61873
+RE=0.0001 RC=2.60372 XTB=0 XTI=4 EG=1.206
+CJE=1.13087e-10 VJE=0.95 MJE=0.692676 TF=1e-09
+XTF=1 VTF=10 ITF=0.01 CJC=0
+VJC=0.908287 MJC=0.23 XCJC=0.897966 FC=0.5
+TR=1e-07 PTF=0 KF=0 AF=1
.ENDS tip102
.step param R6 list 6 10 15 20 25 50 100 1k 1meg
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 2016 1524
WIRE -496 -48 -576 -48
WIRE -480 -48 -496 -48
WIRE -400 -48 -480 -48
WIRE -272 -48 -400 -48
WIRE 64 -48 -272 -48
WIRE 144 -48 64 -48
WIRE 160 -48 144 -48
WIRE 288 -48 256 -48
WIRE 432 -48 368 -48
WIRE 528 -48 432 -48
WIRE 288 -32 288 -48
WIRE 432 -16 432 -48
WIRE -272 16 -272 -48
WIRE 528 16 528 -48
WIRE 208 32 208 16
WIRE 240 32 208 32
WIRE 368 32 368 -48
WIRE 368 32 336 32
WIRE -400 80 -400 16
WIRE 0 80 -96 80
WIRE 208 128 208 32
WIRE 208 128 64 128
WIRE 272 128 208 128
WIRE -480 144 -480 -48
WIRE -336 144 -400 144
WIRE -96 144 -96 80
WIRE -96 144 -336 144
WIRE -400 176 -400 144
WIRE -272 224 -272 192
WIRE -176 224 -272 224
WIRE 144 224 144 -48
WIRE 144 224 112 224
WIRE 272 224 272 128
WIRE -400 272 -400 256
WIRE -352 272 -400 272
WIRE -272 272 -272 224
WIRE 48 272 -64 272
WIRE 416 272 336 272
WIRE 432 272 432 64
WIRE 432 272 416 272
WIRE 256 320 112 320
WIRE 272 320 256 320
WIRE -272 336 -272 320
WIRE -352 352 -352 272
WIRE -176 352 -176 304
WIRE -64 352 -64 272
WIRE -64 352 -176 352
WIRE -480 368 -480 224
WIRE -416 368 -480 368
WIRE 256 368 256 320
WIRE 416 368 416 272
WIRE -176 384 -176 352
WIRE -416 400 -416 368
WIRE -560 464 -560 448
WIRE -400 496 -416 496
WIRE -352 496 -352 448
WIRE -352 496 -400 496
WIRE -496 512 -496 -48
WIRE -272 512 -272 336
WIRE -176 512 -176 464
WIRE -176 512 -272 512
WIRE 256 512 256 448
WIRE 256 512 -176 512
WIRE 416 512 416 448
WIRE 416 512 256 512
WIRE -400 592 -400 496
WIRE -272 592 -272 512
WIRE -272 592 -400 592
WIRE -560 608 -560 544
WIRE -512 608 -560 608
WIRE -496 608 -496 592
WIRE -496 608 -512 608
WIRE -512 656 -512 608
WIRE -400 656 -400 592
FLAG -576 -48 Vin
FLAG 528 -48 Vout
FLAG -176 224 Vref
FLAG -512 656 0
FLAG 528 96 0
FLAG -400 656 0
FLAG -560 448 Shutoff
SYMBOL zener -288 336 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N4735A
SYMBOL npn 336 224 M0
SYMATTR InstName Q1
SYMATTR Value 2N4401
SYMBOL res 416 -32 R0
SYMATTR InstName R3
SYMATTR Value 270
SYMBOL res 400 352 R0
SYMATTR InstName R4
SYMATTR Value 560
SYMBOL npn 160 16 R270
SYMATTR InstName Q2
SYMATTR Value tip102
SYMATTR Prefix X
SYMBOL voltage -496 496 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(15 3 1)
SYMBOL res 384 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value .33
SYMBOL npn 240 -32 M90
SYMATTR InstName Q3
SYMATTR Value 2N4401
SYMBOL res 512 0 R0
SYMATTR InstName R6
SYMATTR Value {R6}
SYMBOL diode -416 -48 R0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL diode -416 80 R0
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL pnp -336 192 M180
SYMATTR InstName Q4
SYMATTR Value 2N4403
SYMBOL res -288 0 R0
SYMATTR InstName R1
SYMATTR Value 12
SYMBOL res -192 368 R0
SYMATTR InstName R8
SYMATTR Value 9.1k
SYMBOL res -192 208 R0
WINDOW 0 36 -13 Left 2
SYMATTR InstName R9
SYMATTR Value 1
SYMBOL voltage -560 448 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL pnp 0 128 M180
SYMATTR InstName Q8
SYMATTR Value 2N4403
SYMBOL res 48 -64 R0
SYMATTR InstName R2
SYMATTR Value 47
SYMBOL npn 48 224 R0
SYMATTR InstName Q10
SYMATTR Value 2N4401
SYMBOL npn -480 400 R0
SYMATTR InstName Q6
SYMATTR Value 2N4401
SYMBOL npn -416 352 R0
SYMATTR InstName Q12
SYMATTR Value MPSA14
SYMBOL res -496 128 R0
SYMATTR InstName R10
SYMATTR Value 4.7Meg
SYMBOL res -464 432 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 10k
SYMBOL res -416 160 R0
SYMATTR InstName R15
SYMATTR Value 1k
SYMBOL res 240 352 R0
SYMATTR InstName R16
SYMATTR Value 100
TEXT 368 336 Left 2 !.tran 0 1 0 .1
TEXT 640 -56 Left 2 !.SUBCKT tip102 1 2 3\n**************************************\n*      Model Generated by MODPEX     *\n*Copyright(c) Symmetry Design Systems*\n*         All Rights Reserved        *\n*    UNPUBLISHED LICENSED SOFTWARE   *\n*   Contains Proprietary Information *\n*      Which is The Property of      *\n*     SYMMETRY OR ITS LICENSORS      *\n*Commercial Use or Resale Restricted *\n*   by Symmetry License Agreement    *\n**************************************\n* Model generated on Jan 20, 03\n* MODEL FORMAT: SPICE3\n* Darlington macro model\n* External node designations\n* Node 1 -> Collect\n* Node 2 -> Base\n* Node 3 -> Emitter\nQ1 1 2 4 qmodel\nQ2 1 4 3 q1model area=11.2198\nD1 3 1 dmodel\nR1 2 4 8000\nR2 4 3 120\n* Default values used in dmodel\n*   EG=1.11 TT=0 BV=infinite\n.MODEL dmodel d\n+IS=1e-12 RS=10 N=1 XTI=3\n+CJO=0 VJ=0.75 M=0.33 FC=0.5\n.MODEL qmodel npn\n+IS=2.88485e-13 BF=126.335 NF=1.2 VAF=30\n+IKF=0.132527 ISE=6.51929e-12 NE=1.9601 BR=0.100001\n+NR=1.5 VAR=300 IKR=0.0843484 ISC=1.01027e-13\n+NC=1.92564 RB=2.61873 IRB=0.2 RBM=2.61873\n+RE=0.0001 RC=2.60372 XTB=0 XTI=4 EG=1.206\n+CJE=1.13087e-10 VJE=0.95 MJE=0.692676 TF=1e-09\n+XTF=1 VTF=10 ITF=0.01 CJC=1.56651e-10\n+VJC=0.908287 MJC=0.23 XCJC=0.897966 FC=0.5\n+TR=1e-07 PTF=0 KF=0 AF=1\n.MODEL q1model npn\n+IS=2.88485e-13 BF=126.335 NF=1.2 VAF=30\n+IKF=0.132527 ISE=6.51929e-12 NE=1.9601 BR=0.100001\n+NR=1.5 VAR=300 IKR=0.0843484 ISC=1.01027e-13\n+NC=1.92564 RB=2.61873 IRB=0.2 RBM=2.61873\n+RE=0.0001 RC=2.60372 XTB=0 XTI=4 EG=1.206\n+CJE=1.13087e-10 VJE=0.95 MJE=0.692676 TF=1e-09\n+XTF=1 VTF=10 ITF=0.01 CJC=0\n+VJC=0.908287 MJC=0.23 XCJC=0.897966 FC=0.5\n+TR=1e-07 PTF=0 KF=0 AF=1\n.ENDS tip102
TEXT -168 648 Left 2 !.step param R6 list 6 10 15 20 25 50 100 1k 1meg