Version 4
SHEET 1 1080 680
WIRE 80 0 -336 0
WIRE 80 128 80 80
WIRE 192 128 80 128
WIRE 304 128 192 128
WIRE 400 128 304 128
WIRE 192 160 192 128
WIRE 400 160 400 128
WIRE -336 176 -336 0
WIRE -112 176 -208 176
WIRE -64 176 -112 176
WIRE 304 176 304 128
WIRE -336 336 -336 256
WIRE -208 336 -208 256
WIRE 80 336 80 224
WIRE 192 336 192 240
WIRE 304 336 304 240
WIRE 400 336 400 240
FLAG 80 336 0
FLAG -208 336 0
FLAG -336 336 0
FLAG 192 336 0
FLAG 192 128 Vout
FLAG -112 176 Vein
FLAG 304 336 0
FLAG 400 336 0
SYMBOL res 32 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10K
SYMBOL res 64 -16 R0
WINDOW 3 49 78 Left 2
SYMATTR InstName R2
SYMATTR Value 1K
SYMBOL voltage -336 160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 -116 102 Left 2
WINDOW 3 -65 16 Left 2
SYMATTR SpiceLine Rser=1m
SYMATTR InstName V1
SYMATTR Value 10V
SYMBOL npn 16 128 R0
SYMATTR InstName Q1
SYMATTR Value BC337-25
SYMBOL res 176 144 R0
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL voltage -208 160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 -84 126 Left 2
WINDOW 0 -56 16 Left 2
WINDOW 3 -105 105 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 7 0 0.1m 0.1m 1m 4m 3)
SYMBOL diode 320 240 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMBOL ind 384 144 R0
SYMATTR InstName L1
SYMATTR Value {L_door}
SYMATTR SpiceLine Ipk=0.9 Rser=0.248 Rpar=11054 Cpar=2.7239p mfg="Wurth Elektronik" pn="74408941100 WE-SPC 4818"
TEXT -384 392 Left 2 !.tran 10m
TEXT 416 264 Left 2 !.step param L_door list  1u  5u  10u  20u  40u 100u
TEXT -336 -80 Left 2 ;Transitor am Türschloss als Schalter