Version 4
SHEET 1 1396 684
WIRE 160 320 128 320
WIRE 192 320 160 320
WIRE 352 320 336 320
WIRE 464 320 432 320
WIRE 128 352 128 320
WIRE 336 368 336 320
WIRE 128 464 128 432
WIRE 336 464 336 448
WIRE 464 464 336 464
FLAG 128 464 0
FLAG 160 320 Vpulse
FLAG 464 320 V+
FLAG 464 464 V-
SYMBOL bv 336 352 R0
WINDOW 3 -93 184 Left 2
SYMATTR InstName B1
SYMATTR Value V=min((V(Vpulse))/(600)*US, 0)
SYMBOL res 448 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Ri1
SYMATTR Value {Ri}
SYMBOL ISO7637-2 128 352 R0
WINDOW 0 -82 15 Left 2
WINDOW 38 -196 65 Left 2
WINDOW 1 -175 37 Left 2
SYMATTR InstName U1
SYMATTR SpiceModel Pulse1_24V