Version 4
SHEET 1 880 680
WIRE 144 32 112 32
WIRE 448 32 224 32
WIRE 400 80 176 80
WIRE 400 96 400 80
WIRE 176 112 176 80
WIRE 112 128 112 32
WIRE 144 128 112 128
WIRE 224 144 208 144
WIRE 336 144 304 144
WIRE 144 160 112 160
WIRE 112 192 112 160
WIRE 176 192 176 176
WIRE 176 192 112 192
WIRE 448 192 448 32
WIRE 448 192 400 192
WIRE 176 240 176 192
WIRE 224 240 176 240
WIRE 400 240 400 192
WIRE 400 240 304 240
SYMBOL Opamps\\LT1001A 176 80 R0
SYMATTR InstName U1
SYMBOL npn 336 96 R0
SYMATTR InstName Q1
SYMBOL res 320 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMBOL res 128 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMBOL res 240 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMBOL res 320 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value Lüfter