Version 4
SHEET 1 1620 680
WIRE -80 160 -80 48
WIRE -80 272 -80 240
WIRE -64 48 -80 48
WIRE 32 48 16 48
WIRE 32 176 32 48
WIRE 32 272 32 208
WIRE 48 176 32 176
WIRE 48 208 32 208
WIRE 80 128 64 128
WIRE 80 160 80 128
WIRE 80 256 80 224
WIRE 96 256 80 256
WIRE 128 48 32 48
WIRE 128 80 128 48
WIRE 128 192 112 192
WIRE 128 192 128 144
WIRE 144 48 128 48
WIRE 144 192 128 192
WIRE 240 -16 240 -64
WIRE 240 48 224 48
WIRE 240 48 240 -16
WIRE 240 80 240 48
WIRE 240 192 224 192
WIRE 240 192 240 160
WIRE 240 208 240 192
WIRE 240 400 240 384
WIRE 240 496 240 480
WIRE 272 -64 240 -64
WIRE 288 -16 240 -16
WIRE 288 48 240 48
WIRE 288 272 288 176
WIRE 304 176 288 176
WIRE 304 208 240 208
WIRE 320 16 304 16
WIRE 320 80 304 80
WIRE 320 304 320 240
WIRE 320 400 320 384
WIRE 320 496 320 480
WIRE 336 144 336 128
WIRE 336 256 336 240
WIRE 352 256 336 256
WIRE 352 256 352 240
WIRE 352 272 352 256
WIRE 368 128 336 128
WIRE 384 -160 384 -192
WIRE 384 -64 352 -64
WIRE 384 -64 384 -80
WIRE 384 -16 352 -16
WIRE 384 -16 384 -64
WIRE 384 32 352 32
WIRE 384 32 384 -16
WIRE 400 176 384 176
WIRE 400 208 384 208
WIRE 416 -160 416 -176
WIRE 416 -64 416 -80
WIRE 416 -16 416 -64
WIRE 416 64 352 64
WIRE 416 64 416 -16
WIRE 432 -64 416 -64
WIRE 432 -16 416 -16
WIRE 528 -64 512 -64
WIRE 528 -16 496 -16
WIRE 528 -16 528 -64
WIRE 528 48 528 -16
WIRE 528 272 528 112
WIRE 576 208 480 208
WIRE 576 208 576 64
WIRE 576 400 576 208
WIRE 592 176 480 176
WIRE 592 176 592 -32
WIRE 592 304 592 176
WIRE 624 448 624 -80
WIRE 624 464 624 448
WIRE 640 16 640 -112
WIRE 640 160 640 16
WIRE 640 208 640 160
WIRE 640 256 640 208
WIRE 640 352 640 256
WIRE 672 -80 624 -80
WIRE 672 -32 592 -32
WIRE 672 16 640 16
WIRE 672 64 576 64
WIRE 672 112 528 112
WIRE 672 160 640 160
WIRE 672 208 640 208
WIRE 672 256 640 256
WIRE 672 304 592 304
WIRE 672 352 640 352
WIRE 672 400 576 400
WIRE 672 448 624 448
WIRE 944 16 928 16
WIRE 944 160 928 160
WIRE 944 208 928 208
WIRE 944 352 928 352
WIRE 1024 112 928 112
WIRE 1024 160 1008 160
WIRE 1024 160 1024 112
WIRE 1024 208 1008 208
WIRE 1024 208 1024 160
WIRE 1024 256 928 256
WIRE 1024 256 1024 208
WIRE 1024 448 928 448
WIRE 1024 448 1024 256
WIRE 1024 464 1024 448
WIRE 1040 -32 928 -32
WIRE 1040 -32 1040 -112
WIRE 1040 400 928 400
WIRE 1040 400 1040 -32
WIRE 1056 -192 384 -192
WIRE 1056 16 1008 16
WIRE 1056 16 1056 -192
WIRE 1056 64 928 64
WIRE 1056 64 1056 16
WIRE 1056 144 1056 64
WIRE 1056 304 928 304
WIRE 1056 304 1056 240
WIRE 1056 352 1008 352
WIRE 1056 352 1056 304
WIRE 1072 -176 416 -176
WIRE 1072 240 1056 240
WIRE 1072 240 1072 -176
WIRE 1088 144 1056 144
WIRE 1088 240 1072 240
WIRE 1184 144 1168 144
WIRE 1184 160 1184 144
WIRE 1184 240 1168 240
WIRE 1184 240 1184 224
WIRE 1216 144 1184 144
WIRE 1216 240 1184 240
WIRE 1264 64 1264 48
WIRE 1312 48 1264 48
WIRE 1312 64 1312 48
WIRE 1312 144 1296 144
WIRE 1312 144 1312 128
WIRE 1312 160 1312 144
WIRE 1312 240 1296 240
WIRE 1312 240 1312 224
WIRE 1312 256 1312 240
WIRE 1312 336 1312 320
WIRE 1376 144 1312 144
WIRE 1376 160 1376 144
WIRE 1376 240 1312 240
WIRE 1424 0 1424 -48
WIRE 1424 192 1424 80
WIRE 1424 336 1424 192
WIRE 1424 464 1424 416
WIRE 1456 192 1424 192
WIRE 1456 208 1456 192
FLAG 1456 208 0
FLAG 528 48 0
FLAG 304 16 +6
FLAG 304 80 -6
FLAG 288 272 0
FLAG 352 272 0
FLAG 32 272 0
FLAG -80 272 0
FLAG 320 304 -6
FLAG 368 128 +6
FLAG 96 256 -6
FLAG 64 128 +6
FLAG 320 496 0
FLAG 240 496 0
FLAG 320 384 -6
FLAG 240 384 +6
FLAG 1264 64 0
FLAG 1312 336 0
FLAG 1424 464 -30
FLAG 1424 -48 +30
FLAG 1024 464 -30
FLAG 624 464 -30
FLAG 640 -112 +30
FLAG 528 272 0
FLAG 1040 -112 +30
SYMBOL ind2 1184 128 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName L1
SYMATTR Value 3.75µ
SYMATTR Type ind
SYMBOL ind2 1072 256 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L2
SYMATTR Value 3.75µ
SYMATTR Type ind
SYMBOL voltage 1424 -16 M0
WINDOW 0 -11 57 Left 0
WINDOW 3 5 6 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value 30
SYMBOL voltage 1424 320 M0
WINDOW 0 -14 57 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 6 11 Left 0
SYMATTR InstName V1
SYMATTR Value 30
SYMBOL voltage -80 144 M0
WINDOW 0 -14 58 Left 0
WINDOW 3 -288 -168 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value SINE(0 1 1k)
SYMBOL cap 1296 256 R0
WINDOW 0 -17 54 Left 0
WINDOW 3 -6 114 Left 0
SYMATTR InstName C2
SYMATTR Value 150n
SYMBOL cap 1296 64 R0
WINDOW 0 -15 13 Left 0
WINDOW 3 -7 -34 Left 0
SYMATTR InstName C4
SYMATTR Value 150n
SYMBOL tda8939 800 320 R180
SYMATTR InstName U3
SYMBOL Misc\\EuropeanResistor 1360 144 R0
WINDOW 0 16 41 VRight 0
SYMATTR InstName R1
SYMATTR Value 4
SYMBOL Opamps\\LT1818 320 48 M0
WINDOW 0 -23 -2 Left 0
WINDOW 3 -184 0 Left 0
SYMATTR InstName U1
SYMBOL Misc\\EuropeanResistor 400 -176 R0
WINDOW 0 17 43 VRight 0
WINDOW 3 33 40 Left 0
SYMATTR InstName R2
SYMATTR Value 20k
SYMBOL Misc\\EuropeanResistor 400 -176 M0
WINDOW 0 17 73 VLeft 0
WINDOW 3 35 39 Left 0
SYMATTR InstName R3
SYMATTR Value 20k
SYMBOL Misc\\EuropeanResistor 368 -48 M270
WINDOW 0 4 54 VTop 0
WINDOW 3 55 54 VBottom 0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL cap 352 -32 R90
WINDOW 0 14 62 VBottom 0
WINDOW 3 -15 0 VTop 0
SYMATTR InstName C1
SYMATTR Value 3.3p
SYMBOL cap 496 -32 R90
WINDOW 0 11 8 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C6
SYMATTR Value 3.3p
SYMBOL Opamps\\LT1362 80 128 R0
WINDOW 0 -20 64 Left 0
WINDOW 3 -25 159 Left 0
SYMATTR InstName U2
SYMBOL Comparators\\LT1016 336 128 R0
WINDOW 0 -20 64 Left 0
WINDOW 3 5 181 Left 0
SYMATTR InstName U4
SYMBOL Misc\\EuropeanResistor 128 208 R270
WINDOW 0 3 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName R5
SYMATTR Value 620
SYMBOL Misc\\EuropeanResistor 256 64 M0
WINDOW 0 17 70 VLeft 0
SYMATTR InstName R6
SYMATTR Value 620
SYMBOL Misc\\EuropeanResistor 240 64 M270
WINDOW 0 2 57 VTop 0
WINDOW 3 60 56 VBottom 0
SYMATTR InstName R7
SYMATTR Value 620
SYMBOL cap 144 144 R180
WINDOW 0 18 54 Left 0
WINDOW 3 -41 52 Left 0
SYMATTR InstName C7
SYMATTR Value 560p
SYMBOL Misc\\EuropeanResistor 32 32 R90
WINDOW 0 30 56 VBottom 0
WINDOW 3 -26 56 VTop 0
SYMATTR InstName R8
SYMATTR Value 620
SYMBOL voltage 320 384 R0
WINDOW 0 -11 56 Left 0
WINDOW 3 24 23 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value -6
SYMBOL voltage 240 384 M0
WINDOW 0 -12 56 Left 0
WINDOW 3 -35 20 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 6
SYMBOL Misc\\EuropeanResistor 416 -48 R270
WINDOW 0 4 59 VTop 0
WINDOW 3 60 62 VBottom 0
SYMATTR InstName R9
SYMATTR Value 1k
SYMBOL Misc\\EuropeanResistor 384 192 R270
WINDOW 0 4 57 VTop 0
WINDOW 3 55 51 VBottom 0
SYMATTR InstName R10
SYMATTR Value 47
SYMBOL Misc\\EuropeanResistor 496 192 R90
WINDOW 0 30 52 VBottom 0
WINDOW 3 27 56 VTop 0
SYMATTR InstName R11
SYMATTR Value 47
SYMBOL cap 1168 160 R0
WINDOW 3 -2 133 Left 0
SYMATTR Value 470n
SYMATTR InstName C8
SYMBOL ind2 1312 128 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName L3
SYMATTR Value 3µ
SYMATTR Type ind
SYMBOL ind2 1200 256 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L4
SYMATTR Value 3µ
SYMATTR Type ind
SYMBOL cap 1296 160 R0
WINDOW 0 -18 13 Left 0
WINDOW 3 23 97 Left 0
SYMATTR InstName C9
SYMATTR Value 270n
SYMBOL cap 944 32 R270
WINDOW 0 20 4 VTop 0
WINDOW 3 -1 31 VBottom 0
SYMATTR InstName C3
SYMATTR Value 100n
SYMBOL cap 1008 336 R90
WINDOW 0 15 54 VBottom 0
WINDOW 3 33 31 VTop 0
SYMATTR InstName C5
SYMATTR Value 100n
SYMBOL cap 1008 144 R90
WINDOW 0 46 58 VBottom 0
WINDOW 3 -28 31 VTop 0
SYMATTR InstName C10
SYMATTR Value 100n
SYMBOL cap 1008 192 R90
WINDOW 0 13 6 VBottom 0
WINDOW 3 33 31 VTop 0
SYMATTR InstName C11
SYMATTR Value 100n
TEXT -40 -128 Left 0 !.tran 0 1.2m 0 100n uic
TEXT -40 -96 Left 0 !.four 1kHz I(R1)
TEXT -40 -160 Left 0 !.inc mylib\\tda8939.mod
TEXT 1096 48 Left 0 !K1 L1 L2 .95\nK2 L3 L4 .95