Version 4
SHEET 1 968 680
WIRE 32 144 0 144
WIRE 144 144 112 144
WIRE -112 208 -112 192
WIRE 0 208 0 144
WIRE 144 208 144 144
WIRE -112 336 -112 288
WIRE 0 336 0 288
WIRE 144 336 144 272
FLAG 0 336 0
FLAG 144 336 0
FLAG -112 336 0
FLAG -112 192 Volumen
FLAG 0 144 A
FLAG 144 144 B
SYMBOL cap 128 208 R0
SYMATTR InstName C1
SYMATTR Value Q =  dnlim(GefVol * (x - Vordruck) / (x + AtmDruck), 0, 1e-6 * GefVol)
SYMATTR Value2 IC=1.5e5
SYMBOL voltage 0 192 M0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 10e5
SYMBOL res 16 128 M90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1e8
SYMBOL bv -112 192 M0
SYMATTR InstName B1
SYMATTR Value V=idt(I(C1))
TEXT 288 144 Left 2 !.tran 0 2 0 startup uic
TEXT 288 192 Left 2 !.param AtmDruck=1e5, GefVol=5e-3
TEXT 288 168 Left 2 !.option plotwinsize=0
TEXT 288 216 Left 2 !.step param Vordruck list 1e5 4e5 7e5