Version 4
SHEET 1 1276 680
WIRE -432 480 -464 480
WIRE -432 480 -432 160
WIRE -304 80 -432 80
WIRE -304 240 -304 80
WIRE -304 480 -432 480
WIRE -304 480 -304 304
WIRE -240 80 -304 80
WIRE -208 80 -240 80
WIRE -128 160 -240 160
WIRE -128 160 -128 128
WIRE -128 192 -128 160
WIRE -128 240 -128 192
WIRE -128 400 -128 336
WIRE -128 480 -304 480
WIRE -32 192 -128 192
WIRE -32 224 -32 192
WIRE -32 288 -64 288
WIRE 48 352 48 224
WIRE 48 480 -128 480
WIRE 48 480 48 432
WIRE 112 288 -32 288
WIRE 112 288 112 272
WIRE 112 400 112 384
WIRE 112 480 48 480
WIRE 192 80 -112 80
WIRE 192 176 112 176
WIRE 192 176 192 160
WIRE 208 336 176 336
WIRE 208 336 208 288
WIRE 224 336 208 336
WIRE 288 176 192 176
WIRE 288 288 208 288
WIRE 288 288 288 272
WIRE 288 400 288 384
WIRE 288 480 112 480
WIRE 368 80 192 80
WIRE 368 112 368 80
WIRE 368 224 352 224
WIRE 368 224 368 192
WIRE 368 256 368 224
WIRE 368 480 288 480
WIRE 368 480 368 336
WIRE 400 480 368 480
WIRE 400 496 400 480
WIRE 432 80 368 80
WIRE 432 128 432 80
WIRE 432 224 368 224
WIRE 432 224 432 192
WIRE 464 80 432 80
WIRE 464 240 464 80
WIRE 464 480 400 480
WIRE 464 480 464 304
WIRE 576 80 464 80
WIRE 576 224 576 80
WIRE 576 480 464 480
WIRE 576 480 576 288
FLAG 400 496 0
SYMBOL voltage -432 64 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR SpiceLine Rser=0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL res 176 64 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMATTR SpiceLine tol=0 pwr=0.5
SYMBOL pnp 352 272 R180
WINDOW 3 14 114 Left 0
SYMATTR InstName Q1
SYMATTR Value Q2sa1015
SYMBOL pnp 48 272 M180
WINDOW 3 -14 113 Left 0
SYMATTR InstName Q2
SYMATTR Value Q2sa1015
SYMBOL voltage 48 336 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR SpiceLine Rser=0
SYMATTR InstName V2
SYMATTR Value 2.5
SYMBOL res 272 384 R0
SYMATTR InstName R2
SYMATTR Value 820
SYMATTR SpiceLine tol=0 pwr=0.5
SYMBOL res 96 384 R0
SYMATTR InstName R3
SYMATTR Value 820
SYMATTR SpiceLine tol=0 pwr=0.5
SYMBOL npn 224 288 R0
SYMATTR InstName Q3
SYMATTR Value Q2sc1815
SYMBOL npn 176 288 M0
WINDOW 3 -69 108 Left 0
SYMATTR InstName Q4
SYMATTR Value Q2sc1815
SYMBOL res 352 96 R0
SYMATTR InstName R4
SYMATTR Value 2k
SYMATTR SpiceLine tol=0 pwr=0.5
SYMBOL res 352 240 R0
SYMATTR InstName R5
SYMATTR Value 2k
SYMATTR SpiceLine tol=0 pwr=0.5
SYMBOL nmos -208 128 R270
SYMATTR InstName M1
SYMATTR Value FDS6680A
SYMBOL npn -64 240 M0
SYMATTR InstName Q5
SYMATTR Value Q2sc1815
SYMBOL current -240 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value 2m
SYMBOL res -144 384 R0
SYMATTR InstName R6
SYMATTR Value 390
SYMATTR SpiceLine tol=0 pwr=0.5
SYMBOL polcap 448 240 R0
SYMATTR InstName C1
SYMATTR Value 100u
SYMBOL cap -48 224 R0
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL polcap 416 128 R0
SYMATTR InstName C3
SYMATTR Value 10u
SYMBOL polcap -320 240 R0
SYMATTR InstName C4
SYMATTR Value 2200u
SYMBOL load 560 224 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I2
SYMATTR Value PULSE(0.05 0.1 0 1p 1p 0.005 0.01)
TEXT -496 504 Left 0 !.tran 0 0.02 0 10