Version 4
SHEET 1 1128 680
WIRE 80 -112 -96 -112
WIRE 272 -112 80 -112
WIRE 672 -112 272 -112
WIRE 80 -96 80 -112
WIRE -96 96 -96 -112
WIRE 672 96 672 -112
WIRE 272 112 272 -112
WIRE 272 128 272 112
WIRE 80 192 80 -32
WIRE 224 192 80 192
WIRE 80 224 80 192
WIRE 80 240 80 224
WIRE 80 304 80 288
WIRE -96 416 -96 176
WIRE 80 416 80 304
WIRE 80 416 -96 416
WIRE 272 416 272 208
WIRE 272 416 80 416
WIRE 672 416 672 160
WIRE 672 416 272 416
FLAG 272 416 0
SYMBOL nmos 224 112 R0
SYMATTR InstName M1
SYMATTR Value BSC050NE2LS
SYMBOL voltage -96 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR SpiceLine Rser=0.5
SYMATTR InstName V1
SYMATTR Value PULSE(0 60 3s 13s 6s 4s 5s)
SYMBOL load 656 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value PULSE(0 20 10s 10s 10s 10s 10s)
SYMBOL res 64 208 R0
SYMATTR InstName R2
SYMATTR Value 200
SYMBOL zener 96 -32 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value DFLZ33
TEXT -128 440 Left 2 !.tran 0 100s 0 100s