Version 4
SHEET 1 1032 680
WIRE 96 96 48 96
WIRE 240 96 176 96
WIRE 320 96 240 96
WIRE 464 96 320 96
WIRE 560 96 544 96
WIRE 240 160 240 96
WIRE 320 160 320 96
WIRE 48 192 48 96
WIRE 560 192 560 160
WIRE 240 272 240 224
WIRE 320 272 320 240
FLAG 48 272 0
FLAG 240 272 0
FLAG 320 272 0
FLAG 48 96 Vin
FLAG 320 96 Vout
FLAG 560 272 0
SYMBOL voltage 48 176 R0
WINDOW 3 -27 140 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value EXP(28v 86v 5ms 10ms 35ms 40ms)
SYMBOL res 80 112 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 100K
SYMBOL res 304 144 R0
SYMATTR InstName R2
SYMATTR Value 18K
SYMBOL cap 224 160 R0
SYMATTR InstName C1
SYMATTR Value 0.1µF
SYMBOL res 448 112 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 1R
SYMBOL voltage 560 176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL diode 544 96 R0
SYMATTR InstName D1
TEXT 12 340 Left 0 !.tran 200ms
TEXT 440 8 Left 2 ;Analog Input intrinsic diode and\nsmall R for current measurement