Version 4
SHEET 1 1804 680
WIRE 448 -128 272 -128
WIRE 592 -128 448 -128
WIRE 896 -128 592 -128
WIRE 1136 -128 896 -128
WIRE 1136 -96 1136 -128
WIRE 448 -80 448 -128
WIRE 592 -80 592 -128
WIRE 272 -32 272 -128
WIRE 896 0 896 -128
WIRE 1136 0 1136 -16
WIRE -160 32 -192 32
WIRE 16 32 -80 32
WIRE 128 32 80 32
WIRE 176 32 128 32
WIRE 224 32 176 32
WIRE 592 48 592 0
WIRE 624 48 592 48
WIRE 832 48 624 48
WIRE 128 64 128 32
WIRE 592 80 592 48
WIRE 272 128 272 64
WIRE 320 128 272 128
WIRE 448 128 448 0
WIRE 448 128 384 128
WIRE 480 128 448 128
WIRE 528 128 480 128
WIRE 896 144 896 96
WIRE 992 144 896 144
WIRE 1104 144 1056 144
WIRE 1136 144 1104 144
WIRE 128 160 128 144
WIRE 272 192 272 128
WIRE 448 192 448 128
WIRE 896 192 896 144
WIRE 1136 192 1136 144
WIRE 592 208 592 176
WIRE 640 208 592 208
WIRE 752 208 720 208
WIRE 592 224 592 208
WIRE 752 240 752 208
WIRE 272 320 272 272
WIRE 448 320 448 272
WIRE 592 320 592 304
WIRE 752 320 752 304
WIRE 896 320 896 272
WIRE 1136 320 1136 272
FLAG 272 320 0
FLAG 448 320 0
FLAG 896 320 0
FLAG 592 320 0
FLAG 128 160 0
FLAG 1136 0 0
FLAG -192 32 0
FLAG 1136 320 0
FLAG 176 32 A
FLAG 480 128 B
FLAG 624 48 C
FLAG 752 320 0
FLAG 1104 144 out
SYMBOL res 256 176 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL res 432 176 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 880 176 R0
SYMATTR InstName R4
SYMATTR Value 470
SYMBOL res 576 208 R0
SYMATTR InstName R5
SYMATTR Value 1.2k
SYMBOL res 112 48 R0
SYMATTR InstName R6
SYMATTR Value 4.7Meg
SYMBOL res 432 -96 R0
SYMATTR InstName R8
SYMATTR Value 33k
SYMBOL res 576 -96 R0
SYMATTR InstName R9
SYMATTR Value 2.2k
SYMBOL njf 224 -32 R0
SYMATTR InstName J1
SYMATTR Value J310
SYMBOL cap 320 144 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL npn 832 0 R0
SYMATTR InstName Q1
SYMATTR Value BF199
SYMBOL npn 528 80 R0
WINDOW 0 81 15 Left 2
WINDOW 3 45 45 Left 2
SYMATTR InstName Q2
SYMATTR Value BF199
SYMBOL cap 16 48 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 1n
SYMBOL voltage 1136 -112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 9
SYMBOL voltage -64 32 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 91 67 VBottom 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(0 10m 1Meg)
SYMATTR Value2 AC 1
SYMBOL res 1120 176 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL cap 992 160 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL res 736 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 150
SYMBOL cap 736 240 R0
SYMATTR InstName C4
SYMATTR Value 47n
TEXT -248 -136 Left 2 !;tran 0 100u 0 100n
TEXT -248 -96 Left 2 !.ac dec 1001 10k 100Meg