Version 4
SHEET 1 1420 2560
WIRE -304 -928 -464 -928
WIRE -240 -928 -304 -928
WIRE 480 -928 -144 -928
WIRE -464 -912 -464 -928
WIRE -304 -896 -304 -928
WIRE -48 -848 -48 -880
WIRE 1008 -832 960 -832
WIRE 1120 -832 1088 -832
WIRE 1200 -832 1120 -832
WIRE 224 -816 224 -832
WIRE 480 -816 480 -928
WIRE 960 -816 960 -832
WIRE 1200 -816 1200 -832
WIRE -304 -800 -304 -816
WIRE -192 -800 -192 -864
WIRE -192 -800 -304 -800
WIRE -304 -784 -304 -800
WIRE 1120 -784 1120 -832
WIRE -48 -736 -48 -768
WIRE -48 -736 -240 -736
WIRE 416 -704 208 -704
WIRE 112 -688 96 -688
WIRE 144 -688 112 -688
WIRE 480 -688 480 -736
WIRE 576 -688 480 -688
WIRE 624 -688 576 -688
WIRE 224 -672 224 -736
WIRE 224 -672 208 -672
WIRE 576 -656 576 -688
WIRE 480 -640 480 -688
WIRE -192 -624 -192 -800
WIRE 112 -608 112 -688
WIRE 224 -608 224 -672
WIRE 224 -608 192 -608
WIRE 336 -528 320 -528
WIRE 416 -528 416 -704
WIRE 480 -528 480 -576
WIRE 480 -528 416 -528
WIRE 576 -528 576 -576
WIRE 576 -528 480 -528
WIRE -304 -512 -304 -688
WIRE -192 -512 -192 -544
WIRE -48 -512 -48 -640
WIRE 224 -512 224 -528
WIRE 320 -512 320 -528
FLAG 176 -656 0
FLAG -480 -512 0
FLAG 224 -512 0
FLAG 176 -720 v+
FLAG -480 -592 v+
FLAG 224 -832 v+
FLAG 320 -512 0
FLAG -304 -512 0
FLAG -192 -512 0
FLAG -464 -832 0
FLAG -48 -512 0
FLAG -48 -880 v+
FLAG 624 -688 Ua
FLAG 1120 -720 0
FLAG 960 -736 0
FLAG 1200 -736 0
SYMBOL Opamps\\UniversalOpamp2 176 -688 M0
WINDOW 0 46 -44 Left 2
SYMATTR InstName U9
SYMBOL voltage -480 -608 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 ""
SYMATTR SpiceLine ""
SYMATTR InstName Ue2
SYMATTR Value 5V
SYMBOL res 96 -624 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 151k
SYMATTR SpiceLine ""
SYMBOL res 208 -512 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R6
SYMATTR Value 135
SYMATTR SpiceLine ""
SYMBOL res 208 -720 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R7
SYMATTR Value 10k
SYMATTR SpiceLine ""
SYMBOL res 432 -544 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rs
SYMATTR Value 1
SYMBOL res 464 -832 R0
SYMATTR InstName R1
SYMATTR Value 88
SYMATTR SpiceLine ""
SYMBOL npn -240 -864 R270
SYMATTR InstName Q1
SYMBOL res -208 -640 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMATTR SpiceLine ""
SYMBOL res -320 -912 R0
SYMATTR InstName R3
SYMATTR Value 800
SYMATTR SpiceLine ""
SYMBOL npn -240 -784 M0
SYMATTR InstName Q2
SYMBOL voltage -464 -928 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 ""
SYMATTR SpiceLine ""
SYMATTR InstName Uin
SYMATTR Value 15V
SYMBOL zener 496 -576 R180
WINDOW 0 24 64 Left 2
WINDOW 3 -280 163 Left 2
SYMATTR InstName D1
SYMATTR Value BZX79-C6V8
SYMBOL npn 16 -736 M0
SYMATTR InstName Q3
SYMBOL res -64 -864 R0
SYMATTR InstName R4
SYMATTR Value 5k
SYMATTR SpiceLine ""
SYMBOL res 112 -704 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 500
SYMATTR SpiceLine ""
SYMBOL res 560 -672 R0
SYMATTR InstName R11
SYMATTR Value 800
SYMATTR SpiceLine ""
SYMBOL zener 1136 -720 R180
WINDOW 0 24 64 Left 2
WINDOW 3 -280 163 Left 2
SYMATTR InstName D2
SYMATTR Value BZX79-C6V8
SYMBOL res 1104 -848 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 88
SYMATTR SpiceLine ""
SYMBOL voltage 960 -832 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 ""
SYMATTR SpiceLine ""
SYMATTR InstName Uin1
SYMATTR Value 15V
SYMBOL res 1184 -832 R0
SYMATTR InstName R10
SYMATTR Value 800
SYMATTR SpiceLine ""
TEXT 8 -440 Left 2 !.tran 100ms uic
TEXT 456 -424 Left 2 !.lib C:\\Program Files\\LTC\\LTspiceIV\\lib\\sub\\mydiodes.lib