Version 4
SHEET 1 1208 1284
WIRE -880 64 -928 64
WIRE -768 64 -800 64
WIRE -432 80 -576 80
WIRE -512 144 -512 128
WIRE -848 160 -848 144
WIRE -576 160 -576 80
WIRE -544 160 -576 160
WIRE -1056 176 -1104 176
WIRE -944 176 -976 176
WIRE -928 176 -928 64
WIRE -928 176 -944 176
WIRE -880 176 -928 176
WIRE -432 176 -432 80
WIRE -432 176 -480 176
WIRE -352 176 -432 176
WIRE -272 176 -352 176
WIRE -768 192 -768 64
WIRE -768 192 -816 192
WIRE -752 192 -768 192
WIRE -720 192 -752 192
WIRE -608 192 -640 192
WIRE -544 192 -608 192
WIRE -880 208 -912 208
WIRE -608 208 -608 192
WIRE -352 208 -352 176
WIRE -512 240 -512 208
WIRE -848 256 -848 224
WIRE -608 288 -608 272
WIRE -768 336 -928 336
WIRE -416 352 -560 352
WIRE -832 400 -832 384
WIRE -768 416 -768 336
WIRE -768 416 -800 416
WIRE -480 416 -480 400
WIRE -1104 432 -1104 176
WIRE -1072 432 -1104 432
WIRE -1056 432 -1072 432
WIRE -928 432 -928 336
WIRE -928 432 -976 432
WIRE -864 432 -928 432
WIRE -416 432 -416 352
WIRE -416 432 -448 432
WIRE -1104 448 -1104 432
WIRE -752 448 -800 448
WIRE -720 448 -752 448
WIRE -672 448 -720 448
WIRE -560 448 -560 352
WIRE -560 448 -592 448
WIRE -544 448 -560 448
WIRE -512 448 -544 448
WIRE -720 464 -720 448
WIRE -400 464 -448 464
WIRE -352 464 -352 288
WIRE -352 464 -400 464
WIRE -832 496 -832 464
WIRE -352 496 -352 464
WIRE -480 512 -480 480
WIRE -1104 528 -1104 512
WIRE -720 544 -720 528
WIRE -352 576 -352 560
WIRE -928 624 -928 432
WIRE -304 624 -928 624
WIRE -1104 704 -1104 688
WIRE -1008 704 -1008 688
WIRE -1104 800 -1104 784
WIRE -1008 800 -1008 784
FLAG -512 240 0
FLAG -512 128 V+
FLAG -480 512 0
FLAG -480 400 V+
FLAG -832 496 0
FLAG -832 384 V+
FLAG -352 576 0
FLAG -848 256 0
FLAG -848 144 V+
FLAG -912 208 VH
FLAG -720 544 0
FLAG -1104 528 0
FLAG -608 288 0
FLAG -304 624 COS
IOPIN -304 624 Out
FLAG -272 176 SIN
IOPIN -272 176 Out
FLAG -1104 800 0
FLAG -1008 800 0
FLAG -1104 688 V+
FLAG -1008 688 VH
FLAG -752 192 1
FLAG -608 192 2
FLAG -400 464 3
FLAG -752 448 5
FLAG -1072 432 6
FLAG -944 176 7
FLAG -544 448 4
SYMBOL Opamps\\opamp2 -512 112 R0
SYMATTR InstName U1
SYMATTR Value LM348
SYMBOL Opamps\\opamp2 -480 384 M0
SYMATTR InstName U2
SYMATTR Value LM348
SYMBOL Opamps\\opamp2 -832 368 M0
SYMATTR InstName U3
SYMATTR Value LM348
SYMBOL Misc\\EuropeanResistor -368 192 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL cap -368 496 R0
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL Misc\\EuropeanResistor -688 464 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor -736 208 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor -1072 448 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor -896 80 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName RF
SYMATTR Value 1.5meg
SYMBOL Misc\\EuropeanResistor -1072 192 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName RG
SYMATTR Value 360k
SYMBOL Opamps\\opamp2 -848 128 R0
SYMATTR InstName U4
SYMATTR Value LM348
SYMBOL cap -624 208 R0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL cap -736 464 R0
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL cap -1120 448 R0
SYMATTR InstName C4
SYMATTR Value 10n
SYMBOL voltage -1104 688 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage -1008 688 R0
SYMATTR InstName V2
SYMATTR Value 6
TEXT -1080 -80 Left 2 !.tran 0 10m 0 10u
TEXT -1080 -56 Left 2 !.options plotwinsize=0
TEXT -1080 -24 Left 2 !.ic V(2)=5 ; start oscillation
TEXT -1080 -120 Left 2 !.inc LM348.mod
TEXT -752 -72 Left 2 ;http://www.ti.com/lit/an/sloa060/sloa060.pdf
TEXT -712 -112 Left 4 ;Bubba Oscillator