Version 4
SHEET 1 880 680
WIRE 176 256 176 288
WIRE 176 96 176 112
WIRE 176 400 176 480
WIRE 128 240 -48 240
WIRE -48 240 -48 304
WIRE -48 384 -48 480
WIRE -48 480 176 480
WIRE 176 16 176 0
WIRE 176 0 -48 0
WIRE -48 0 -48 48
WIRE -48 128 -48 160
WIRE -48 496 -48 480
WIRE 224 256 320 256
WIRE 320 272 320 256
WIRE 320 352 320 368
WIRE 320 480 176 480
WIRE 224 160 416 160
WIRE 416 480 320 480
WIRE 176 288 144 288
WIRE 176 288 176 320
WIRE 176 128 144 128
WIRE 176 128 176 160
WIRE 320 448 320 480
WIRE 176 112 608 112
WIRE 176 112 176 128
WIRE 608 192 608 240
FLAG -48 160 0
FLAG -48 496 0
FLAG 416 160 Tj
FLAG 320 256 Tc
FLAG 144 128 d
FLAG 144 288 s
FLAG 608 240 0
SYMBOL x_models\\xnmos5 128 160 R0
SYMATTR InstName U1
SYMATTR SpiceModel BSP135
SYMBOL res 160 304 R0
SYMATTR InstName R1
SYMATTR Value 1
SYMBOL res 160 0 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL voltage -48 288 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -120 265 Left 0
SYMATTR Value PULSE(-1 1 0 100n 100n 400n 1000n)
SYMATTR InstName V1
SYMBOL voltage -48 32 R0
SYMATTR InstName V2
SYMATTR Value 40V
SYMBOL res 304 256 R0
SYMATTR InstName Rth
SYMATTR Value 50
SYMBOL voltage 320 352 R0
SYMATTR InstName V3
SYMATTR Value 25
SYMBOL res 592 96 R0
SYMATTR InstName R3
SYMATTR Value 1MEG
TEXT -456 96 Left 0 !.op
TEXT -456 8 Left 0 ;.include small_signal.lib
TEXT -456 152 Left 0 !.tran 0 20u 0 0.1u
TEXT -456 48 Left 0 !.include bsp135_small_signal.lib
TEXT -448 200 Left 0 !.options reltol=0.0001
TEXT -448 248 Left 0 ;.options trtol=7