Version 4
SHEET 1 880 680
WIRE -304 96 -416 96
WIRE -192 96 -304 96
WIRE 16 96 -192 96
WIRE 128 96 112 96
WIRE 208 96 128 96
WIRE 288 96 208 96
WIRE 464 96 288 96
WIRE 608 96 464 96
WIRE -192 128 -192 96
WIRE 208 128 208 96
WIRE 288 144 288 96
WIRE 464 144 464 96
WIRE -256 176 -304 176
WIRE 96 192 96 144
WIRE 96 192 32 192
WIRE 128 192 128 176
WIRE 128 192 96 192
WIRE 208 192 128 192
WIRE -416 208 -416 96
WIRE -160 224 -192 224
WIRE -64 224 -80 224
WIRE 608 224 608 96
WIRE -496 256 -560 256
WIRE -240 256 -304 256
WIRE 240 256 240 224
WIRE 288 256 288 240
WIRE 288 256 240 256
WIRE 416 256 416 224
WIRE 464 256 464 240
WIRE 464 256 416 256
WIRE 288 288 288 256
WIRE 320 288 288 288
WIRE 464 288 464 256
WIRE 464 288 400 288
WIRE -240 304 -240 256
WIRE -192 304 -240 304
WIRE 32 304 32 192
WIRE 32 304 -112 304
WIRE 288 304 288 288
WIRE 464 304 464 288
WIRE -496 352 -496 256
WIRE -304 352 -496 352
WIRE -64 352 -64 224
WIRE -64 352 -96 352
WIRE -32 352 -64 352
WIRE 32 352 -32 352
WIRE -96 368 -96 352
WIRE 32 384 32 352
WIRE -560 432 -560 416
WIRE -416 432 -416 288
WIRE -416 432 -560 432
WIRE -240 432 -240 400
WIRE -240 432 -416 432
WIRE -96 432 -240 432
WIRE -64 432 -96 432
WIRE -32 432 -64 432
WIRE 16 432 -32 432
WIRE 240 432 240 384
WIRE 240 432 112 432
WIRE 288 432 288 400
WIRE 288 432 240 432
WIRE 416 432 416 384
WIRE 416 432 288 432
WIRE 464 432 464 400
WIRE 464 432 416 432
WIRE 608 432 608 304
WIRE 608 432 464 432
WIRE 240 448 240 432
WIRE -64 464 -64 432
FLAG -64 464 0
SYMBOL nmos 240 144 R0
SYMATTR InstName M2
SYMATTR Value FDS3570
SYMBOL nmos 240 304 R0
WINDOW 3 56 71 Left 2
SYMATTR InstName M3
SYMATTR Value FDS3570
SYMBOL nmos 416 144 R0
SYMATTR InstName M4
SYMATTR Value FDS3570
SYMBOL nmos 416 304 R0
SYMATTR InstName M5
SYMATTR Value FDS3570
SYMBOL voltage -416 192 R0
WINDOW 0 -14 54 Left 2
WINDOW 3 -50 -166 VRight 2
WINDOW 123 0 0 Left 2
WINDOW 39 -40 100 Left 2
SYMATTR InstName V1
SYMATTR Value PWL(0 25 0.10 5 0.2 25 0.5 0)
SYMBOL voltage -560 320 R0
WINDOW 0 -16 61 Left 2
WINDOW 3 -51 -300 VRight 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PWL(0 0 .1 0 .101 10 .2 10 .201 0 .5 0)
SYMBOL voltage 416 288 R90
WINDOW 0 2 58 VBottom 2
WINDOW 3 166 -58 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 15 54 VTop 2
SYMATTR InstName V3
SYMATTR Value PULSE(-15 15 0 2m 2m 5m 18m 100)
SYMATTR SpiceLine Rser=1
SYMBOL res 592 208 R0
SYMATTR InstName R4
SYMATTR Value 20
SYMBOL nmos 112 384 R90
WINDOW 0 66 19 VRight 2
WINDOW 3 -12 -27 VRight 2
SYMATTR InstName M6
SYMATTR Value FDS3570
SYMBOL pmos 16 144 R270
WINDOW 0 69 10 VRight 2
WINDOW 3 -13 -30 VRight 2
SYMATTR InstName M1
SYMATTR Value FDS4685
SYMBOL res 112 80 R0
WINDOW 0 33 47 Left 2
SYMATTR InstName R1
SYMATTR Value 2k
SYMBOL res -576 240 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL res -64 208 R90
WINDOW 0 11 49 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 500
SYMBOL res -48 336 R0
SYMATTR InstName R5
SYMATTR Value 2k
SYMBOL res -96 288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 500
SYMBOL npn -304 304 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL pnp -256 224 M180
WINDOW 0 37 61 Left 2
WINDOW 3 34 33 Left 2
SYMATTR InstName Q2
SYMATTR Value 2N3906
SYMBOL res -320 160 R0
SYMATTR InstName R7
SYMATTR Value 2k
SYMBOL res -320 80 R0
SYMATTR InstName R8
SYMATTR Value 5k
SYMBOL zener 224 192 R180
WINDOW 0 24 64 Left 2
WINDOW 3 -49 129 Left 2
SYMATTR InstName D1
SYMATTR Value BZX84C10L
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL zener -80 432 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 -28 Left 2
SYMATTR InstName D2
SYMATTR Value BZX84C10L
SYMATTR Description Diode
SYMATTR Type diode
TEXT -490 456 Left 2 !.tran .5 startup