Version 4
SHEET 1 880 680
WIRE -480 -176 -560 -176
WIRE -384 -176 -400 -176
WIRE -320 -176 -384 -176
WIRE -160 -176 -160 -240
WIRE -160 -176 -320 -176
WIRE 80 -176 -160 -176
WIRE 80 -128 80 -176
WIRE -816 -96 -816 -144
WIRE -320 -64 -320 -176
WIRE -160 -64 -160 -176
WIRE -816 16 -816 -16
WIRE 80 16 80 -48
WIRE -560 64 -560 -176
WIRE -320 64 -320 0
WIRE -160 64 -160 0
FLAG -560 64 0
FLAG -384 -176 U
FLAG -320 64 0
FLAG -160 64 0
FLAG -160 -304 3.3v
FLAG -816 16 0
FLAG -816 -144 3.3v
FLAG 80 16 0
SYMBOL zener -304 0 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value BZX84B10VL
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky -144 0 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Zener Diode
SYMATTR Type zener
SYMBOL res -384 -192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL schottky -144 -240 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMATTR Value BAT54
SYMATTR Description Zener Diode
SYMATTR Type zener
SYMBOL voltage -816 -112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL load2 80 -128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value 1
TEXT -256 208 Left 2 ;.tran 0 2 0 0.1 startup
TEXT -592 232 Left 2 !.dc I1 -2 2 0.001
TEXT -488 -512 Left 2 ;Schutzschaltung für Analogeingang Mikrocontroller\n \nhttps://www.mikrocontroller.net/topic/467798#new