Version 4
SHEET 1 1364 680
WIRE 1360 -624 1008 -624
WIRE 1008 -544 1008 -624
WIRE 1008 -336 1008 -464
WIRE 144 -256 -64 -256
WIRE 640 -256 224 -256
WIRE 736 -256 640 -256
WIRE 848 -256 736 -256
WIRE 960 -256 848 -256
WIRE 640 -224 640 -256
WIRE 736 -224 736 -256
WIRE 848 -224 848 -256
WIRE 144 -96 0 -96
WIRE 320 -96 224 -96
WIRE 416 -96 320 -96
WIRE 320 -64 320 -96
WIRE 416 -64 416 -96
WIRE 320 48 320 16
WIRE 1360 48 1360 -624
WIRE 1360 48 320 48
WIRE 0 64 0 -96
WIRE 320 64 320 48
WIRE 416 224 416 16
WIRE 640 224 640 -160
WIRE 640 224 416 224
WIRE 736 224 736 -160
WIRE 736 224 640 224
WIRE 848 224 848 -160
WIRE 848 224 736 224
WIRE 1008 224 1008 -240
WIRE 1008 224 848 224
WIRE -64 240 -64 -256
WIRE 0 240 0 144
WIRE 0 240 -64 240
WIRE 144 240 0 240
WIRE 320 240 320 144
WIRE 320 240 224 240
WIRE 416 240 416 224
WIRE 416 240 320 240
WIRE 320 304 320 240
FLAG 320 304 0
SYMBOL voltage 320 48 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL Misc\\signal 0 48 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value SINE(0 325 50)
SYMBOL res 240 -112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 660k
SYMBOL res 240 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 660k
SYMBOL res 400 -80 R0
SYMATTR InstName R4
SYMATTR Value 4k7
SYMBOL res 304 -80 R0
SYMATTR InstName R3
SYMATTR Value 27k
SYMBOL res 240 -272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 2Meg
SYMBOL zener 656 -160 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value BZX84C12L
SYMBOL schottky 752 -160 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMBOL nmos 960 -336 R0
SYMATTR InstName M1
SYMATTR Value FDS2734
SYMBOL cap 832 -224 R0
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL res 992 -560 R0
SYMATTR InstName R6
SYMATTR Value 1k2
TEXT -34 328 Left 2 !.tran 1