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Add LTspice files for Wien Bridge Oscillator
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Signed-off-by: Mark Thoren <[email protected]>
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@thorenscientific
thorenscientific committed Jul 6, 2021
1 parent 76a02ae commit a567ee1
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92 changes: 92 additions & 0 deletions m2k/ltspice/wien_bridge_osc/basic_wein_bridge.asc
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Version 4
SHEET 1 1136 792
WIRE 144 -160 -224 -160
WIRE 144 -32 144 -160
WIRE 144 -32 48 -32
WIRE 208 -32 144 -32
WIRE 240 -32 208 -32
WIRE 48 48 48 -32
WIRE 240 144 240 -32
WIRE 48 176 48 128
WIRE -224 240 -224 -160
WIRE 48 272 48 240
WIRE 48 272 -64 272
WIRE 240 272 240 224
WIRE 352 272 240 272
WIRE 48 304 48 272
WIRE 48 304 0 304
WIRE 112 304 48 304
WIRE 240 320 240 272
WIRE 112 336 112 304
WIRE 0 352 0 304
WIRE 560 400 480 400
WIRE 480 448 480 400
WIRE 0 464 0 432
WIRE 112 464 112 400
WIRE 112 464 0 464
WIRE 144 464 112 464
WIRE 208 464 144 464
WIRE 240 464 240 400
WIRE 240 464 208 464
WIRE 432 464 400 464
WIRE 432 512 400 512
WIRE -224 560 -224 320
WIRE 144 560 144 464
WIRE 144 560 -224 560
WIRE 144 592 144 560
WIRE 480 592 480 528
WIRE 480 592 144 592
WIRE 144 656 144 592
WIRE 144 768 144 720
FLAG 144 768 0
FLAG -64 272 C
IOPIN -64 272 Out
FLAG 352 272 D
IOPIN 352 272 Out
FLAG 208 -32 A
FLAG 208 464 B
FLAG 560 400 Vcd
IOPIN 560 400 Out
FLAG 400 464 D
IOPIN 400 464 Out
FLAG 400 512 C
IOPIN 400 512 Out
SYMBOL res 64 144 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 16 448 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 256 240 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 20k
SYMBOL res 256 416 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL Misc\\jumper 208 688 R90
SYMATTR InstName X1
SYMBOL voltage -224 224 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(0 1 1000)
SYMATTR Value2 AC 1
SYMBOL e 480 432 R0
SYMATTR InstName E1
SYMATTR Value 1.0
SYMBOL cap 32 176 R0
SYMATTR InstName C1
SYMATTR Value 10nF
SYMBOL cap 96 336 R0
SYMATTR InstName C2
SYMATTR Value 10nF
TEXT -200 640 Left 2 !.ac dec 100 100 10000
TEXT -88 -248 Left 4 ;Basic Wien Bridge
81 changes: 81 additions & 0 deletions m2k/ltspice/wien_bridge_osc/wheatstone_bridge.asc
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Version 4
SHEET 1 1136 792
WIRE 144 16 -224 16
WIRE 144 64 144 16
WIRE 144 64 48 64
WIRE 208 64 144 64
WIRE 240 64 208 64
WIRE 48 144 48 64
WIRE 240 144 240 64
WIRE -224 240 -224 16
WIRE 48 272 48 224
WIRE 48 272 -64 272
WIRE 240 272 240 224
WIRE 352 272 240 272
WIRE 48 320 48 272
WIRE 240 320 240 272
WIRE 544 320 480 320
WIRE 480 368 480 320
WIRE 432 384 384 384
WIRE 432 432 384 432
WIRE 48 464 48 400
WIRE 144 464 48 464
WIRE 208 464 144 464
WIRE 240 464 240 400
WIRE 240 464 208 464
WIRE -224 560 -224 320
WIRE 144 560 144 464
WIRE 144 560 -224 560
WIRE 144 592 144 560
WIRE 480 592 480 448
WIRE 480 592 144 592
WIRE 144 656 144 592
WIRE 144 768 144 720
FLAG 144 768 0
FLAG -64 272 C
IOPIN -64 272 Out
FLAG 352 272 D
IOPIN 352 272 Out
FLAG 208 64 A
FLAG 208 464 B
FLAG 544 320 Vcd
IOPIN 544 320 Out
FLAG 384 384 D
IOPIN 384 384 Out
FLAG 384 432 C
IOPIN 384 432 Out
SYMBOL res 64 240 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 64 416 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 256 240 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 9.9k
SYMBOL res 256 416 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL Misc\\jumper 208 688 R90
SYMATTR InstName X1
SYMBOL voltage -224 224 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL e 480 352 R0
SYMATTR InstName E1
SYMATTR Value 1.0
TEXT -64 664 Left 2 !.op 0.5
TEXT -104 -32 Left 4 ;Basic Wheatstone Bridge
TEXT -104 -32 Left 4 ;Basic Wheatstone Bridge
TEXT 264 640 Left 2 ;LTspice always needs a ground reference somewhere.\nA jumper lets you electrically join two nodes of different\nnames so that they're equivalent. This lets you label the\n"ground" node whatever it happens to be in your textbook circuit.
TEXT 600 456 Left 2 ;VCVS: Handy for measuring\nvoltage differences
126 changes: 126 additions & 0 deletions m2k/ltspice/wien_bridge_osc/wien_bridge_osc_complete.asc
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Version 4
SHEET 1 948 792
WIRE -560 96 -560 64
WIRE 128 96 96 96
WIRE 304 96 192 96
WIRE 448 96 384 96
WIRE -560 208 -560 176
WIRE -560 208 -640 208
WIRE 256 208 256 192
WIRE -32 224 -160 224
WIRE 96 224 96 96
WIRE 96 224 -32 224
WIRE 224 224 96 224
WIRE -560 240 -560 208
WIRE 448 240 448 96
WIRE 448 240 288 240
WIRE 560 240 448 240
WIRE -640 256 -640 208
WIRE -160 256 -160 224
WIRE -32 256 -32 224
WIRE 224 256 80 256
WIRE 256 288 256 272
WIRE -560 352 -560 320
WIRE -32 368 -32 320
WIRE 80 384 80 256
WIRE 128 384 80 384
WIRE 240 384 208 384
WIRE 304 384 240 384
WIRE 448 384 448 240
WIRE 448 384 384 384
WIRE -160 416 -160 336
WIRE 80 448 80 384
WIRE 240 496 240 384
WIRE 272 496 240 496
WIRE 448 496 448 384
WIRE 448 496 336 496
WIRE -160 560 -160 496
WIRE 240 576 240 496
WIRE 352 576 240 576
WIRE 448 576 448 496
WIRE 448 576 416 576
WIRE 80 592 80 528
WIRE 80 704 80 672
FLAG -640 256 0
FLAG -560 64 Vp
FLAG 256 288 Vp
FLAG -560 352 Vn
FLAG 256 192 Vn
FLAG -32 368 0
FLAG -160 560 0
FLAG 80 704 0
FLAG 560 240 Out
IOPIN 560 240 Out
SYMBOL Opamps\\OP07 256 304 M180
SYMATTR InstName U1
SYMBOL voltage -560 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage -560 224 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL res 400 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 400 368 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 4.7k
SYMBOL res 224 368 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 96 544 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 4.7k
SYMBOL res 96 688 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R5
SYMATTR Value 2k
SYMBOL cap 192 80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 10nF
SYMBOL cap -48 320 M180
WINDOW 0 -20 57 Left 2
WINDOW 3 -45 8 Left 2
SYMATTR InstName C2
SYMATTR Value 10nF
SYMBOL res -144 352 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL diode 336 480 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 352 592 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL voltage -160 400 R0
WINDOW 3 -410 60 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PWL(0 {vkick} 1m {vkick} 6m 0.0)
SYMATTR InstName V3
TEXT -456 776 Left 2 !.tran 0.5
TEXT -616 584 Left 2 ;"kickstart" trick. Note startup time, then\nSet vkick to zero and compare.
TEXT -568 528 Left 2 !.param vkick=0.1
TEXT -24 -24 Left 4 ;Wein Bridge Oscillator
TEXT 592 520 Left 2 ;Run time domain simulation\ntry adjusting R5, take FFT, note\ndistortion for different gains

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