Version 4
SHEET 1 1000 980
WIRE -240 -240 -448 -240
WIRE -80 -240 -240 -240
WIRE 176 -240 -80 -240
WIRE 368 -240 176 -240
WIRE 368 -208 368 -240
WIRE -448 -160 -448 -240
WIRE -240 -160 -240 -240
WIRE -80 -160 -80 -240
WIRE 176 -48 176 -240
WIRE -80 -32 -80 -96
WIRE -240 64 -240 -96
WIRE 368 80 368 -128
WIRE 464 80 368 80
WIRE 512 80 464 80
WIRE 560 80 512 80
WIRE 656 80 624 80
WIRE 368 112 368 80
WIRE 464 112 464 80
WIRE -448 160 -448 -96
WIRE -448 288 -448 240
WIRE -240 288 -240 144
WIRE -240 288 -448 288
WIRE -80 288 -80 48
WIRE -80 288 -240 288
WIRE 176 288 176 32
WIRE 176 288 -80 288
WIRE 368 288 368 176
WIRE 368 288 176 288
WIRE 464 288 464 192
WIRE 464 288 368 288
WIRE -448 304 -448 288
WIRE 656 368 656 80
WIRE 656 368 -416 368
WIRE -368 400 -480 400
WIRE -272 400 -368 400
WIRE -64 400 -272 400
WIRE 96 400 -64 400
WIRE 560 400 96 400
WIRE 624 400 560 400
WIRE 560 416 560 400
WIRE 96 432 96 400
WIRE -64 448 -64 400
WIRE 32 480 16 480
WIRE 256 480 192 480
WIRE 416 480 336 480
WIRE -368 512 -368 400
WIRE 624 560 624 400
WIRE 96 576 96 528
WIRE 192 576 192 480
WIRE 192 576 96 576
WIRE 272 576 192 576
WIRE 416 576 416 480
WIRE 416 576 336 576
WIRE 592 576 416 576
WIRE 688 592 656 592
WIRE -272 608 -272 400
WIRE 560 608 560 496
WIRE 592 608 560 608
WIRE -64 624 -64 528
WIRE 16 624 16 480
WIRE 16 624 -64 624
WIRE -416 656 -416 368
WIRE -368 656 -368 592
WIRE -368 656 -416 656
WIRE -336 656 -368 656
WIRE 96 656 96 576
WIRE -64 672 -64 624
WIRE -480 688 -480 400
WIRE 16 704 16 624
WIRE 32 704 16 704
WIRE 560 704 560 608
WIRE -272 720 -272 704
WIRE -128 720 -272 720
WIRE -368 736 -368 656
WIRE 416 784 416 576
WIRE -64 800 -64 768
WIRE 16 800 -64 800
WIRE -272 832 -272 720
WIRE -64 832 -64 800
WIRE 16 848 16 800
WIRE -480 944 -480 768
WIRE -368 944 -368 816
WIRE -368 944 -480 944
WIRE -272 944 -272 912
WIRE -272 944 -368 944
WIRE -64 944 -64 912
WIRE -64 944 -272 944
WIRE 16 944 16 912
WIRE 16 944 -64 944
WIRE 96 944 96 752
WIRE 96 944 16 944
WIRE 416 944 416 848
WIRE 416 944 96 944
WIRE 560 944 560 784
WIRE 560 944 416 944
WIRE 624 944 624 624
WIRE 624 944 560 944
WIRE -480 960 -480 944
FLAG -448 304 0
FLAG 512 80 Vsofmon
FLAG -480 960 0
FLAG -272 720 Vbuf
FLAG -64 624 Vamp
FLAG 688 592 Vint
FLAG 560 608 Vdetth
FLAG 96 576 Vdet
FLAG 416 576 Vdetwp
FLAG -448 -240 Vdp
SYMBOL res 352 -224 R0
SYMATTR InstName R2
SYMATTR Value 3.3k
SYMBOL cap 352 112 R0
SYMATTR InstName C1
SYMATTR Value 68p
SYMBOL npn -336 608 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL res -288 816 R0
SYMATTR InstName R3
SYMATTR Value 470
SYMBOL Misc\\battery -480 672 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL res -384 496 R0
SYMATTR InstName R5
SYMATTR Value 330k
SYMBOL res 448 96 R0
SYMATTR InstName R6
SYMATTR Value 100k
SYMBOL npn -128 672 R0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL res -384 720 R0
SYMATTR InstName R8
SYMATTR Value 330k
SYMBOL res -80 816 R0
SYMATTR InstName R9
SYMATTR Value 330
SYMBOL cap 624 64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL polcap 0 848 R0
SYMATTR InstName C3
SYMATTR Value 10u
SYMATTR SpiceLine Rser=1
SYMBOL res -80 432 R0
SYMATTR InstName R10
SYMATTR Value 1.5k
SYMBOL pnp 32 752 M180
SYMATTR InstName Q3
SYMATTR Value 2N3906
SYMBOL res 544 400 R0
SYMATTR InstName R14
SYMATTR Value 22k
SYMBOL res 544 688 R0
SYMATTR InstName R15
SYMATTR Value 22k
SYMBOL Opamps\\LM324 624 592 R0
SYMATTR InstName U1
SYMBOL npn 32 432 R0
SYMATTR InstName Q4
SYMATTR Value 2N3904
SYMBOL cap 400 784 R0
SYMATTR InstName C4
SYMATTR Value 22n
SYMBOL res 352 464 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 220k
SYMBOL schottky 336 560 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL Misc\\signal -448 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(0 0.4 0 10n 10n 10m 100m)
SYMBOL schottky -464 -96 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 160 -64 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL Misc\\signal -240 48 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 2.0 30m 10n 10n 10m 100m)
SYMBOL schottky -256 -96 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky -96 -96 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL Misc\\signal -80 -48 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value PULSE(0 0.7 60m 10n 10n 10m 100m)
TEXT -424 312 Left 2 !.tran 200m