Version 4 SHEET 1 1300 680 WIRE 928 -80 800 -80 WIRE 928 -32 928 -80 WIRE 800 -16 800 -80 WIRE 928 80 928 48 WIRE -192 112 -400 112 WIRE 80 112 -112 112 WIRE 112 112 80 112 WIRE 224 112 192 112 WIRE 336 112 224 112 WIRE 672 112 336 112 WIRE 800 112 800 64 WIRE 800 112 752 112 WIRE 1088 112 800 112 WIRE 1232 112 1152 112 WIRE 1088 144 1088 128 WIRE -400 160 -400 112 WIRE 224 176 224 112 WIRE 336 176 336 112 WIRE 800 176 800 112 WIRE 224 256 224 240 WIRE 336 256 336 240 WIRE 800 256 800 240 WIRE -400 272 -400 224 WIRE -400 400 -400 352 FLAG 224 256 0 FLAG 800 256 0 FLAG 928 80 0 FLAG 1232 112 out FLAG 336 256 0 FLAG -400 400 0 FLAG 1088 224 0 FLAG 80 112 in SYMBOL res 768 96 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 2.2K SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL res -96 96 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName Leitungsschleife SYMATTR Value 200 SYMBOL res 784 -32 R0 SYMATTR InstName R3 SYMATTR Value 1Meg SYMBOL polcap 784 176 R0 WINDOW 3 24 56 Left 2 SYMATTR InstName C1 SYMATTR Value 1µ SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=16 Irms=0 Rser=11 Lser=0 mfg="AVX" pn="TAJA105K016" type="Tantalum" SYMBOL polcap 208 176 R0 WINDOW 3 24 56 Left 2 SYMATTR InstName C2 SYMATTR Value 2.2µ SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=16 Irms=0 Rser=6.5 Lser=0 mfg="AVX" pn="TAJA225K016" type="Tantalum" SYMBOL zener 352 240 R180 WINDOW 0 24 64 Left 2 WINDOW 3 -142 71 Left 2 SYMATTR InstName D1 SYMATTR Value BZX84C6V2L SYMATTR Description Diode SYMATTR Type diode SYMBOL Digital\\schmtbuf 1088 48 R0 SYMATTR InstName A1 SYMATTR SpiceLine2 Trise=6n Tfall=6n Td=10n SYMATTR SpiceLine Vhigh=3.3 Vlow=0 Vt=2.0 Vh=1.2 SYMBOL voltage 928 -48 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 3.3 SYMBOL voltage -400 256 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value PWL(0 3.3 1m 3.3 1.2m 0 1.4m 0 1.6m 3.3 1.8m 3.3 2.0m 0 2.2m 0 2.4m 3.3 2.6m 3.3 2.8m 0 10m 0) SYMBOL schottky -416 160 R0 SYMATTR InstName D2 SYMATTR Value 1N5817 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 1072 128 R0 SYMATTR InstName Messwiderstand SYMATTR Value 1 SYMBOL res 208 96 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 2.2K SYMATTR SpiceLine tol=1 pwr=0.1 TEXT -432 424 Left 2 !.tran 0 100m 0