Version 4
SHEET 1 2236 680
WIRE 1360 -224 1248 -224
WIRE 1408 -224 1360 -224
WIRE 1504 -224 1488 -224
WIRE 1248 -208 1248 -224
WIRE 1008 -160 960 -160
WIRE 1040 -160 1008 -160
WIRE 1184 -160 1120 -160
WIRE 1360 -96 1360 -224
WIRE 1248 -48 1248 -112
WIRE 1296 -48 1248 -48
WIRE -64 16 -96 16
WIRE 1360 32 1360 0
WIRE 1440 32 1360 32
WIRE 1472 32 1440 32
WIRE 1584 32 1552 32
WIRE 1648 32 1584 32
WIRE 1680 32 1648 32
WIRE 160 48 80 48
WIRE 304 48 240 48
WIRE 352 48 304 48
WIRE 480 48 432 48
WIRE 592 48 544 48
WIRE 672 48 592 48
WIRE 720 48 672 48
WIRE 848 48 800 48
WIRE 896 48 848 48
WIRE 944 48 896 48
WIRE -64 80 -240 80
WIRE 1248 96 1248 -48
WIRE 1360 96 1360 32
WIRE -96 112 -96 16
WIRE -64 112 -96 112
WIRE 592 112 592 48
WIRE 672 112 672 48
WIRE 848 112 848 48
WIRE 1440 112 1440 32
WIRE 1584 112 1584 32
WIRE -240 144 -240 80
WIRE -240 256 -240 224
WIRE -96 256 -96 112
WIRE -96 256 -240 256
WIRE 592 256 592 192
WIRE 592 256 -96 256
WIRE 672 256 672 176
WIRE 672 256 592 256
WIRE 848 256 848 176
WIRE 848 256 672 256
WIRE 1248 256 1248 176
WIRE 1248 256 848 256
WIRE 1360 256 1360 176
WIRE 1360 256 1248 256
WIRE 1440 256 1440 176
WIRE 1440 256 1360 256
WIRE 1584 256 1584 176
WIRE 1584 256 1440 256
WIRE 1680 256 1584 256
WIRE -240 272 -240 256
FLAG 896 48 nf1
FLAG 1008 -160 zf
FLAG 1504 -224 0
FLAG 1648 32 nf2
FLAG -240 272 0
FLAG 304 48 zf
SYMBOL schottky 480 64 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value BAT41
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 448 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1
SYMBOL cap 656 112 R0
SYMATTR InstName C1
SYMATTR Value 220p
SYMBOL res 576 96 R0
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL ind 704 64 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 10m
SYMBOL cap 832 112 R0
SYMATTR InstName C2
SYMATTR Value 220p
SYMBOL npn 1184 -208 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL voltage 1392 -224 M90
WINDOW 0 -71 77 Left 2
WINDOW 3 -71 49 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 8V
SYMBOL res 1568 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 3.3k
SYMBOL cap 1568 112 R0
SYMATTR InstName C5
SYMATTR Value 2.2n
SYMBOL res 1136 -176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 1.5k
SYMBOL res 1344 80 R0
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL cap 1456 176 R180
WINDOW 0 -20 55 Left 2
WINDOW 3 -36 7 Left 2
SYMATTR InstName C8
SYMATTR Value 10n
SYMBOL npn 1296 -96 R0
SYMATTR InstName Q2
SYMATTR Value BC547C
SYMBOL res 1232 80 R0
SYMATTR InstName R11
SYMATTR Value 22k
SYMBOL SpecialFunctions\\modulate -64 16 R0
WINDOW 0 5 -83 Left 2
WINDOW 3 2 -52 Left 2
SYMATTR InstName A1
SYMATTR Value space=2Meg mark=2Meg
SYMBOL voltage -240 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value SINE({ampl} {ampl*0.7} 2k)
SYMBOL voltage 256 48 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 3V
TEXT -184 280 Left 2 !.param ampl=1V
TEXT -250 -164 Left 2 !.tran 0 10.1m 100u 20n