Version 4
SHEET 1 1172 680
WIRE 144 -176 -32 -176
WIRE 768 -176 144 -176
WIRE 896 -176 768 -176
WIRE 144 -160 144 -176
WIRE 768 -160 768 -176
WIRE 896 -144 896 -176
WIRE 144 -64 144 -80
WIRE 272 -64 144 -64
WIRE 416 -64 272 -64
WIRE 768 -64 768 -80
WIRE 896 -64 896 -80
WIRE 896 -64 768 -64
WIRE 272 -48 272 -64
WIRE 416 -48 416 -64
WIRE 896 -32 896 -64
WIRE 144 0 144 -64
WIRE 416 48 416 32
WIRE 544 48 416 48
WIRE 752 48 544 48
WIRE 848 48 752 48
WIRE 416 64 416 48
WIRE 896 80 896 64
WIRE -32 96 -32 -176
WIRE 272 112 272 32
WIRE 352 112 272 112
WIRE 272 128 272 112
WIRE 544 128 544 48
WIRE 752 128 752 48
WIRE 144 176 144 64
WIRE 208 176 144 176
WIRE 144 192 144 176
WIRE -32 288 -32 176
WIRE 80 288 -32 288
WIRE 144 288 144 272
WIRE 144 288 80 288
WIRE 272 288 272 224
WIRE 272 288 144 288
WIRE 416 288 416 160
WIRE 416 288 272 288
WIRE 544 288 544 208
WIRE 544 288 416 288
WIRE 752 288 752 208
WIRE 752 288 544 288
WIRE 896 288 896 160
WIRE 896 288 752 288
WIRE 80 304 80 288
FLAG 80 304 0
SYMBOL zener 160 64 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value BZX84C8V2L
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 128 -176 R0
SYMATTR InstName R1
SYMATTR Value 15k
SYMBOL npn 208 128 R0
SYMATTR InstName Q1
SYMATTR Value BC847A
SYMBOL npn 352 64 R0
SYMATTR InstName Q2
SYMATTR Value BC847A
SYMBOL res 128 176 R0
SYMATTR InstName R2
SYMATTR Value 4k7
SYMBOL res 256 -64 R0
SYMATTR InstName R3
SYMATTR Value 62k
SYMBOL res 400 -64 R0
SYMATTR InstName R4
SYMATTR Value 15k
SYMBOL voltage -32 80 M0
WINDOW 3 6 104 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 41 57 Left 2
SYMATTR Value PULSE(0 32 1m 3m 3m 7m)
SYMATTR SpiceLine Rser=3R
SYMATTR InstName V1
SYMBOL res 736 112 R0
SYMATTR InstName R5
SYMATTR Value {RPULL}
SYMBOL res 528 112 R0
SYMATTR InstName R6
SYMATTR Value 15k
SYMBOL cap 880 -144 R0
SYMATTR InstName C1
SYMATTR Value 150µ
SYMBOL nmos 848 -32 R0
SYMATTR InstName M1
SYMATTR Value IRLML6346
SYMBOL res 880 64 R0
SYMATTR InstName R7
SYMATTR Value 3R
SYMBOL res 752 -176 R0
SYMATTR InstName R8
SYMATTR Value 420R
TEXT 136 336 Left 2 !.tran 15m startup
TEXT 784 344 Left 2 ;.step param RPULL list 30k 88k
TEXT 368 336 Left 2 ;.step temp list -40 85
TEXT 784 312 Left 2 !.param RPULL 58k
TEXT 720 -224 Left 2 ;High Side Switch + Last
RECTANGLE Normal 1168 384 704 -208 2