Version 4
SHEET 1 1372 948
WIRE 464 -384 32 -384
WIRE 816 -384 464 -384
WIRE 1040 -384 816 -384
WIRE 816 -352 816 -384
WIRE 1040 -352 1040 -384
WIRE 336 -320 208 -320
WIRE 464 -320 464 -384
WIRE 464 -320 416 -320
WIRE 32 -304 32 -384
WIRE 208 -304 208 -320
WIRE 560 -240 528 -240
WIRE 656 -240 640 -240
WIRE 688 -240 656 -240
WIRE 816 -240 816 -272
WIRE 816 -240 768 -240
WIRE 1040 -224 1040 -272
WIRE 208 -208 208 -240
WIRE 816 -208 816 -240
WIRE 656 -160 656 -240
WIRE 656 -160 608 -160
WIRE 752 -160 656 -160
WIRE 208 -112 208 -144
WIRE 528 -112 528 -240
WIRE 528 -112 208 -112
WIRE 544 -112 528 -112
WIRE -192 -80 -192 -112
WIRE 32 -64 32 -224
WIRE 144 -64 32 -64
WIRE 32 -16 32 -64
WIRE 208 16 208 -16
WIRE 304 16 208 16
WIRE -144 48 -272 48
WIRE -64 48 -80 48
WIRE 208 48 208 16
WIRE 304 48 304 16
WIRE -192 144 -192 0
WIRE -416 160 -464 160
WIRE -272 160 -272 48
WIRE -272 160 -336 160
WIRE -224 160 -272 160
WIRE -64 176 -64 48
WIRE -64 176 -160 176
WIRE 80 176 -64 176
WIRE 208 176 208 128
WIRE 208 176 160 176
WIRE 304 176 304 112
WIRE 304 176 208 176
WIRE 368 176 304 176
WIRE 608 176 608 -64
WIRE 608 176 448 176
WIRE 688 176 608 176
WIRE 816 176 816 -112
WIRE 816 176 688 176
WIRE 928 176 816 176
WIRE 1040 176 928 176
WIRE -224 192 -272 192
WIRE 688 208 688 176
WIRE 1040 208 1040 176
WIRE 32 224 32 48
WIRE 32 224 -16 224
WIRE 208 224 208 176
WIRE -416 240 -496 240
WIRE -272 240 -272 192
WIRE -272 240 -336 240
WIRE 304 240 304 176
WIRE -16 256 -16 224
WIRE -192 272 -192 208
WIRE -496 288 -496 240
WIRE 688 288 688 272
WIRE 32 304 32 224
WIRE 208 336 208 304
WIRE 304 336 304 304
WIRE 304 336 208 336
WIRE 1040 336 1040 288
WIRE -272 368 -272 240
WIRE 208 368 208 336
WIRE -192 400 -192 352
WIRE 688 400 688 368
WIRE -496 416 -496 368
WIRE 32 416 32 368
WIRE 144 416 32 416
WIRE 608 416 608 176
WIRE 528 464 208 464
WIRE 544 464 528 464
WIRE 816 464 816 176
WIRE 208 496 208 464
WIRE 656 512 608 512
WIRE 752 512 656 512
WIRE 32 544 32 416
WIRE 208 592 208 560
WIRE 528 592 528 464
WIRE 560 592 528 592
WIRE 656 592 656 512
WIRE 656 592 640 592
WIRE 688 592 656 592
WIRE 816 592 816 560
WIRE 816 592 768 592
WIRE 816 624 816 592
WIRE 1040 624 1040 576
WIRE 208 688 208 656
WIRE 352 688 208 688
WIRE 464 688 432 688
WIRE 32 752 32 624
WIRE 464 752 464 688
WIRE 464 752 32 752
WIRE 816 752 816 704
WIRE 816 752 464 752
WIRE 1040 752 1040 704
WIRE 1040 752 816 752
WIRE -272 816 -272 448
WIRE 928 816 928 176
WIRE 928 816 -272 816
FLAG -192 -112 0
FLAG -192 400 0
FLAG -16 256 0
FLAG -464 160 0
FLAG -496 416 0
FLAG 1040 576 0
FLAG 1040 336 0
FLAG 1040 -224 0
FLAG 688 400 0
FLAG 1040 176 out
FLAG -496 240 in
SYMBOL voltage -192 16 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage -192 368 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL res 192 32 R0
SYMATTR InstName R1
SYMATTR Value 2k
SYMBOL res 192 208 R0
SYMATTR InstName R2
SYMATTR Value 2k
SYMBOL zener 48 48 R180
WINDOW 0 24 64 Left 2
WINDOW 3 -79 29 Left 2
SYMATTR InstName D1
SYMATTR Value 1N750
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL zener 48 368 R180
WINDOW 0 24 64 Left 2
WINDOW 3 -76 29 Left 2
SYMATTR InstName D2
SYMATTR Value 1N750
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL npn 144 -112 R0
SYMATTR InstName Q1
SYMATTR Value 2N5550
SYMBOL pnp 144 464 M180
SYMATTR InstName Q2
SYMATTR Value 2N5401
SYMBOL res -320 144 R90
WINDOW 0 -5 76 VBottom 2
WINDOW 3 -32 29 VTop 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res -320 224 R90
WINDOW 0 69 73 VBottom 2
WINDOW 3 41 29 VTop 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res -256 464 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL res 16 -320 R0
SYMATTR InstName R6
SYMATTR Value 2k7
SYMBOL res 16 528 R0
SYMATTR InstName R7
SYMATTR Value 2k7
SYMBOL voltage 1040 -368 R0
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 26 -9 Left 2
SYMATTR InstName V3
SYMATTR Value 30
SYMATTR SpiceLine Rser=0.01
SYMBOL voltage 1040 608 R0
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 17 -15 Left 2
SYMATTR InstName V4
SYMATTR Value 30
SYMATTR SpiceLine Rser=0.01
SYMBOL pnp 544 -64 M180
SYMATTR InstName Q3
SYMATTR Value 2N5401
SYMBOL npn 544 416 R0
SYMATTR InstName Q5
SYMATTR Value 2N5550
SYMBOL res 800 -368 R0
SYMATTR InstName R8
SYMATTR Value 0.33
SYMBOL res 800 608 R0
SYMATTR InstName R9
SYMATTR Value 0.33
SYMBOL res 784 -256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 180
SYMBOL res 784 576 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 180
SYMBOL res 656 -256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 750
SYMBOL res 656 576 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 750
SYMBOL diode 192 -208 R0
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode 192 -304 R0
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL diode 192 496 R0
SYMATTR InstName D5
SYMATTR Value 1N4148
SYMBOL diode 192 592 R0
SYMATTR InstName D6
SYMATTR Value 1N4148
SYMBOL res 432 -336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R14
SYMATTR Value 470
SYMBOL res 448 672 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R15
SYMATTR Value 470
SYMBOL res 1024 304 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R16
SYMATTR Value 4
SYMBOL cap 288 48 R0
SYMATTR InstName C1
SYMATTR Value 560p
SYMBOL cap 288 240 R0
SYMATTR InstName C2
SYMATTR Value 560p
SYMBOL cap -80 32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 22p
SYMBOL voltage -496 272 R0
WINDOW 0 24 96 Left 2
WINDOW 3 -60 140 VLeft 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value SINE(0 1 100)
SYMBOL Opamps\\LT1055 -192 112 R0
SYMATTR InstName U2
SYMBOL npn 752 464 R0
SYMATTR InstName Q6
SYMATTR Value MJE3055
SYMBOL pnp 752 -112 M180
SYMATTR InstName Q4
SYMATTR Value MJE2955
SYMBOL cap 672 208 R0
SYMATTR InstName C4
SYMATTR Value 100n
SYMBOL res 672 272 R0
SYMATTR InstName R17
SYMATTR Value 1
SYMBOL res 176 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R18
SYMATTR Value 1k
SYMBOL res 464 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R19
SYMATTR Value 1G
TEXT -520 -312 Left 2 !.tran 0 20m 0 10u
TEXT 56 -80 Left 2 ;4V7
TEXT 48 400 Left 2 ;-4V7
TEXT -520 -232 Left 2 ;.options gmin=1e-10 abstol=1e-10
TEXT -520 -280 Left 2 !.options plotwinsize=0
TEXT -520 -368 Left 2 !.inc model_MJE2955_MJE3055.txt
CIRCLE Normal 496 240 48 128 2
CIRCLE Normal 912 608 720 432 2
CIRCLE Normal 400 128 272 48 2
CIRCLE Normal 400 320 272 240 2