* Z:\tmp\asc_dec_bjh7r6w2\0992038df2c4_AD534_xistor2_dec0.asc
* Generated by LTspice 26.0.1 for Windows.
R19 N028 N027 77k9
R21 N016 Y2 10k
Q12 N001 N004 N006 0 NPN
R29 N030 N029 77k9
R27 N017 0 10k
R23 N007 N013 0k5
R15 N034 N039 10k6
R9 N026 N025 77k9
Q7 N002 N002 N004 0 NPN
R6 N033 N038 10k6
R1 SF V- 8k9
R2 Zener N031 18k7
R10 N020 N026 8k
R34 V+ N009 6k
G1 0 Out N003 N001 100
R31 N018 Z2 10k
R14 N039 V- 2k7
C1 Out 0 100n Rser=30m Rpar=35
R4 N038 V- 2k7
V1 Zener V- 7.7
.model NPN NPN
.model PNP PNP
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.bjt
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 1640 936
WIRE -464 336 -464 304
WIRE -464 720 -512 720
WIRE -464 720 -464 416
WIRE -416 304 -464 304
WIRE -384 304 -416 304
WIRE -384 336 -384 304
WIRE -384 448 -384 416
WIRE -384 464 -384 448
WIRE -384 560 -512 560
WIRE -384 592 -384 560
WIRE -384 720 -464 720
WIRE -384 720 -384 672
WIRE -288 448 -384 448
WIRE -288 512 -320 512
WIRE -288 512 -288 448
WIRE -256 384 -272 384
WIRE -224 272 -224 224
WIRE -224 384 -256 384
WIRE -224 384 -224 352
WIRE -208 224 -224 224
WIRE -208 448 -288 448
WIRE -144 80 -144 32
WIRE -144 176 -144 160
WIRE -144 288 -144 272
WIRE -144 384 -144 368
WIRE -144 400 -144 384
WIRE -144 512 -144 496
WIRE -144 608 -144 592
WIRE -96 384 -144 384
WIRE -64 608 -144 608
WIRE -64 624 -64 608
WIRE -64 720 -384 720
WIRE -64 720 -64 704
WIRE 16 -96 -144 -96
WIRE 16 -80 16 -96
WIRE 16 64 16 16
WIRE 16 80 16 64
WIRE 16 176 16 160
WIRE 16 288 16 272
WIRE 16 384 -16 384
WIRE 16 384 16 368
WIRE 16 400 16 384
WIRE 16 512 16 496
WIRE 16 608 -64 608
WIRE 16 608 16 592
WIRE 80 448 -208 448
WIRE 96 -96 16 -96
WIRE 96 -32 80 -32
WIRE 96 -32 96 -96
WIRE 96 224 80 224
WIRE 96 272 96 224
WIRE 96 384 96 352
WIRE 128 384 96 384
WIRE 144 384 128 384
WIRE 176 64 16 64
WIRE 176 64 176 -32
WIRE 192 -32 176 -32
WIRE 224 384 208 384
WIRE 256 -80 256 -128
WIRE 256 384 224 384
WIRE 256 384 256 352
WIRE 272 448 80 448
WIRE 336 -80 336 -96
WIRE 336 16 256 16
WIRE 336 80 336 16
WIRE 336 176 336 160
WIRE 336 288 336 272
WIRE 336 384 336 368
WIRE 336 400 336 384
WIRE 336 512 336 496
WIRE 336 608 336 592
WIRE 384 384 336 384
WIRE 416 -32 400 -32
WIRE 416 32 -144 32
WIRE 416 32 416 -32
WIRE 416 608 336 608
WIRE 416 624 416 608
WIRE 416 720 -64 720
WIRE 416 720 416 704
WIRE 432 -32 416 -32
WIRE 496 -128 256 -128
WIRE 496 -80 496 -128
WIRE 496 80 496 16
WIRE 496 176 496 160
WIRE 496 288 496 272
WIRE 496 384 464 384
WIRE 496 384 496 368
WIRE 496 400 496 384
WIRE 496 512 496 496
WIRE 496 608 416 608
WIRE 496 608 496 592
WIRE 560 448 272 448
WIRE 576 -96 336 -96
WIRE 576 -80 576 -96
WIRE 576 16 496 16
WIRE 576 224 560 224
WIRE 576 272 576 224
WIRE 576 384 576 352
WIRE 608 384 576 384
WIRE 624 384 608 384
WIRE 624 752 624 384
WIRE 656 -32 640 -32
WIRE 656 64 176 64
WIRE 656 64 656 -32
WIRE 704 384 688 384
WIRE 736 272 736 224
WIRE 736 384 704 384
WIRE 736 384 736 352
WIRE 752 224 736 224
WIRE 752 448 560 448
WIRE 768 -96 576 -96
WIRE 768 0 768 -96
WIRE 768 64 768 0
WIRE 768 160 768 144
WIRE 800 -128 496 -128
WIRE 800 -32 800 -128
WIRE 816 160 768 160
WIRE 816 176 816 160
WIRE 816 288 816 272
WIRE 816 384 816 368
WIRE 816 400 816 384
WIRE 816 512 816 496
WIRE 864 64 864 48
WIRE 864 160 816 160
WIRE 864 160 864 144
WIRE 864 384 816 384
WIRE 896 48 864 48
WIRE 896 720 416 720
WIRE 928 48 896 48
WIRE 928 64 928 48
WIRE 928 160 928 144
WIRE 976 160 928 160
WIRE 976 176 976 160
WIRE 976 288 976 272
WIRE 976 384 944 384
WIRE 976 384 976 368
WIRE 976 400 976 384
WIRE 976 512 976 496
WIRE 1024 -32 800 -32
WIRE 1024 64 1024 -32
WIRE 1024 160 976 160
WIRE 1024 160 1024 144
WIRE 1040 -96 1024 -96
WIRE 1040 448 752 448
WIRE 1056 0 768 0
WIRE 1056 224 1040 224
WIRE 1056 272 1056 224
WIRE 1056 384 1056 352
WIRE 1088 -32 1024 -32
WIRE 1088 16 1056 0
WIRE 1088 384 1056 384
WIRE 1104 384 1088 384
WIRE 1136 -96 1120 -96
WIRE 1136 -48 1136 -96
WIRE 1136 48 1120 48
WIRE 1136 48 1136 32
WIRE 1152 48 1136 48
WIRE 1216 -96 1136 -96
WIRE 1216 48 1216 -96
WIRE 1216 752 1216 48
WIRE 1264 -96 1216 -96
SYMBOL res 480 368 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R19
SYMATTR Value 77k9
SYMBOL res 560 256 R0
SYMATTR InstName R21
SYMATTR Value 10k
SYMBOL npn 192 -80 R0
SYMATTR InstName Q12
SYMBOL res 960 368 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R29
SYMATTR Value 77k9
SYMBOL res 720 256 R0
SYMATTR InstName R27
SYMATTR Value 10k
SYMBOL res 480 64 R0
SYMATTR InstName R23
SYMATTR Value 0k5
SYMBOL res 320 496 R0
SYMATTR InstName R15
SYMATTR Value 10k6
SYMBOL res 0 368 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R9
SYMATTR Value 77k9
SYMBOL npn 80 -80 M0
SYMATTR InstName Q7
SYMBOL res 0 496 R0
SYMATTR InstName R6
SYMATTR Value 10k6
SYMBOL res -400 576 R0
SYMATTR InstName R1
SYMATTR Value 8k9
SYMBOL res -400 320 R0
SYMATTR InstName R2
SYMATTR Value 18k7
SYMBOL res 0 272 R0
SYMATTR InstName R10
SYMATTR Value 8k
SYMBOL res 912 48 R0
SYMATTR InstName R34
SYMATTR Value 6k
SYMBOL g2 1136 -64 R0
WINDOW 0 32 32 Left 0
WINDOW 3 25 0 Left 0
SYMATTR InstName G1
SYMATTR Value 100
SYMBOL res 1040 256 R0
SYMATTR InstName R31
SYMATTR Value 10k
SYMBOL res 400 608 R0
SYMATTR InstName R14
SYMATTR Value 2k7
SYMBOL cap 1216 32 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
WINDOW 39 32 -32 Center 0
SYMATTR InstName C1
SYMATTR Value 100n
SYMATTR SpiceLine Rser=30m Rpar=35
SYMBOL res -80 608 R0
SYMATTR InstName R4
SYMATTR Value 2k7
SYMBOL voltage -464 320 M0
SYMATTR InstName V1
SYMATTR Value 7.7
FLAG -512 720 V-
FLAG -256 384 X1
FLAG 128 384 X2
FLAG 224 384 Y1
FLAG 608 384 Y2
FLAG 704 384 Z1
FLAG 1088 384 Z2
FLAG 1264 -96 Out
FLAG 208 384 0
FLAG 688 384 0
FLAG 144 384 0
FLAG -512 560 SF
FLAG 1120 48 0
FLAG 896 48 V+
FLAG 1024 -96 0
FLAG -416 304 Zener