Version 4
SHEET 1 2496 708
WIRE 608 -112 496 -112
WIRE 800 -112 672 -112
WIRE 1296 -112 1072 -112
WIRE 1072 -48 1072 -112
WIRE 352 0 352 -48
WIRE 320 16 288 16
WIRE 496 32 496 -112
WIRE 496 32 384 32
WIRE 608 32 496 32
WIRE 800 32 800 -112
WIRE 800 32 688 32
WIRE 1024 32 800 32
WIRE 320 48 160 48
WIRE 496 80 496 32
WIRE 352 112 352 64
WIRE 288 176 288 16
WIRE 496 176 496 144
WIRE 496 176 288 176
WIRE 608 176 496 176
WIRE 1072 176 1072 48
WIRE 1072 176 688 176
WIRE 800 240 800 32
WIRE 880 288 864 288
WIRE 912 288 880 288
WIRE 1072 288 1072 176
WIRE 1072 288 992 288
WIRE 1296 304 1296 -112
WIRE 1072 320 1072 288
WIRE 880 352 880 288
WIRE 800 464 800 336
WIRE 880 464 880 432
WIRE 880 464 800 464
WIRE 1072 464 1072 400
WIRE 1072 464 880 464
WIRE 1296 464 1296 384
WIRE 1296 464 1072 464
WIRE 1072 496 1072 464
FLAG 1072 496 0
FLAG 160 48 steuersignal
FLAG 352 -48 V+
FLAG 352 112 V-
SYMBOL res 704 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R33
SYMATTR Value 1k
SYMBOL res 704 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R41
SYMATTR Value 10k
SYMBOL cap 480 80 R0
SYMATTR InstName C5
SYMATTR Value 10n
SYMBOL nmos 1024 -48 R0
SYMATTR InstName Q1
SYMATTR Value FET
SYMBOL res 1056 304 R0
SYMATTR InstName R5
SYMATTR Value shunt
SYMBOL voltage 1296 288 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -62 48 VRight 2
SYMATTR Value 50V
SYMATTR InstName V4
SYMBOL npn 864 240 M0
SYMATTR InstName Q2
SYMBOL res 1008 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R19
SYMATTR Value 1k
SYMBOL res 864 336 R0
SYMATTR InstName R11
SYMATTR Value optional
SYMBOL Opamps\\LT1013A 352 -32 R0
SYMATTR InstName U1
SYMBOL diode 672 -128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value optional