Version 4
SHEET 1 880 680
WIRE -160 -16 -304 -16
WIRE -64 -16 -64 -32
WIRE -64 -16 -160 -16
WIRE 592 -16 -64 -16
WIRE -304 16 -304 -16
WIRE -352 32 -432 32
WIRE 32 64 32 48
WIRE 32 64 -64 64
WIRE 160 64 32 64
WIRE 272 64 240 64
WIRE 352 64 272 64
WIRE 496 64 352 64
WIRE 624 64 496 64
WIRE 736 64 704 64
WIRE 784 64 736 64
WIRE -432 80 -432 32
WIRE -352 80 -368 80
WIRE -160 80 -160 -16
WIRE 352 112 352 64
WIRE 496 112 496 64
WIRE -304 128 -304 96
WIRE -64 128 -64 64
WIRE 736 128 736 64
WIRE 272 160 272 64
WIRE 288 160 272 160
WIRE 592 160 592 -16
WIRE 592 160 560 160
WIRE -432 256 -432 160
WIRE -368 256 -368 80
WIRE -368 256 -432 256
WIRE -304 256 -304 208
WIRE -304 256 -368 256
WIRE -160 256 -160 160
WIRE -160 256 -304 256
WIRE -64 256 -64 208
WIRE -64 256 -160 256
WIRE -16 256 -64 256
WIRE 352 256 352 208
WIRE 352 256 -16 256
WIRE 496 256 496 208
WIRE 496 256 352 256
WIRE 736 256 736 192
WIRE 736 256 496 256
WIRE -16 272 -16 256
FLAG -16 272 0
FLAG 784 64 ADC
FLAG 32 48 VIN
FLAG -64 -32 VDD
SYMBOL voltage -304 112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V1
SYMATTR Value 3.3V
SYMATTR SpiceLine Rser=1R
SYMBOL voltage -64 112 R0
WINDOW 3 10 112 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(-30 +30 1m 2m 2m 1m 6m)
SYMBOL res 256 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 3k
SYMBOL pnp 288 112 R0
WINDOW 0 50 26 Left 2
WINDOW 3 51 61 Left 2
SYMATTR InstName Q1
SYMATTR Value BC856B
SYMBOL pnp 560 208 R180
WINDOW 0 51 34 Left 2
WINDOW 3 46 61 Left 2
SYMATTR InstName Q2
SYMATTR Value BC857B
SYMBOL res 720 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 18k
SYMBOL cap 720 128 R0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL sw -304 112 M180
SYMATTR InstName S1
SYMBOL voltage -432 64 M0
WINDOW 3 10 112 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(0 5 6.5m)
SYMBOL res -176 64 R0
SYMATTR InstName R3
SYMATTR Value 3k
TEXT 62 296 Left 2 !.tran 15m startup
TEXT -536 296 Left 2 !.model sw sw (vt=2.5 vh=1 roff=1e9 ron=1)