Version 4
SHEET 1 896 688
WIRE -320 -112 -320 -128
WIRE -320 -16 -320 -32
WIRE -96 -16 -320 -16
WIRE -320 0 -320 -16
WIRE -96 0 -96 -16
WIRE 240 0 128 0
WIRE 432 0 320 0
WIRE -320 80 -320 64
WIRE -96 96 -96 64
WIRE 128 96 128 0
WIRE 128 96 -96 96
WIRE 256 96 128 96
WIRE 432 96 432 0
WIRE 432 96 320 96
WIRE -96 128 -96 96
WIRE -320 160 -320 144
WIRE 480 160 304 160
WIRE 192 208 192 192
WIRE -272 224 -528 224
WIRE -96 224 -96 192
WIRE -96 224 -192 224
WIRE 96 224 96 208
WIRE 96 224 -96 224
WIRE 160 224 96 224
WIRE -528 240 -528 224
WIRE 304 240 304 160
WIRE 304 240 224 240
WIRE 336 240 304 240
WIRE 432 240 432 96
WIRE 432 240 416 240
WIRE 656 240 432 240
WIRE 160 256 128 256
WIRE 432 272 432 240
WIRE 656 272 656 240
WIRE 192 288 192 272
WIRE -528 336 -528 320
WIRE 32 352 16 352
WIRE 128 352 128 256
WIRE 128 352 112 352
WIRE 176 352 128 352
WIRE 304 352 304 240
WIRE 304 352 240 352
WIRE 304 368 304 352
WIRE 432 368 432 336
WIRE 544 368 432 368
WIRE 656 368 656 336
WIRE 656 368 608 368
WIRE 432 400 432 368
WIRE 656 400 656 368
WIRE -96 416 -96 224
WIRE 80 464 -32 464
WIRE 304 464 304 448
WIRE 304 464 80 464
WIRE 80 480 80 464
WIRE 304 480 304 464
WIRE 432 480 432 464
WIRE 656 480 656 464
WIRE -416 512 -416 496
WIRE -288 512 -288 496
WIRE -96 528 -96 512
WIRE 80 560 80 544
WIRE 304 560 304 544
WIRE -416 608 -416 592
WIRE -288 608 -288 592
FLAG -288 608 0
FLAG 192 192 +V
FLAG -288 496 +V
FLAG 192 288 -V
FLAG -416 608 0
FLAG -416 496 -V
FLAG 432 480 0
FLAG 656 480 0
FLAG 96 144 0
FLAG -320 160 0
FLAG -320 -128 +V
FLAG 16 352 0
FLAG -528 336 0
FLAG 80 560 0
FLAG 304 560 0
FLAG -96 528 -V
FLAG 480 160 OUT
FLAG -528 224 IN
SYMBOL voltage -288 496 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage -416 496 R0
SYMATTR InstName V2
SYMATTR Value -15
SYMBOL cap 240 336 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 33p
SYMBOL res 320 256 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 1.5K
SYMBOL diode 416 336 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 416 400 R0
WINDOW 3 28 63 Left 2
SYMATTR Value 1N4148
SYMATTR InstName D2
SYMBOL diode 640 272 R0
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode 640 464 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL zener 544 384 R270
WINDOW 0 36 32 VTop 2
WINDOW 3 -4 32 VBottom 2
SYMATTR InstName D5
SYMATTR Value LM329
SYMBOL cap 320 80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value .001µ
SYMBOL res 336 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 3Meg
SYMBOL cap 80 208 M180
WINDOW 0 36 49 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C3
SYMATTR Value .1µ
SYMBOL diode -112 192 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D6
SYMATTR Value 1N4148
SYMBOL diode -112 64 M180
WINDOW 0 30 62 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D7
SYMATTR Value 1N4148
SYMBOL diode -336 80 R0
WINDOW 0 36 16 Left 2
WINDOW 3 23 61 Left 2
SYMATTR InstName D9
SYMATTR Value 1N4148
SYMBOL res -336 -128 R0
SYMATTR InstName R2
SYMATTR Value 4.7K
SYMBOL res 128 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 22K
SYMBOL diode -336 0 R0
WINDOW 0 36 16 Left 2
WINDOW 3 23 61 Left 2
SYMATTR InstName D8
SYMATTR Value 1N4148
SYMBOL res -176 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 75K
SYMBOL pnp -32 512 R180
WINDOW 0 51 110 Right 2
WINDOW 3 40 -10 Right 2
SYMATTR InstName Q1
SYMATTR Value 2N3906
SYMBOL diode 64 480 R0
WINDOW 0 36 16 Left 2
WINDOW 3 23 61 Left 2
SYMATTR InstName D10
SYMATTR Value 1N4148
SYMBOL cap 288 480 R0
WINDOW 3 33 50 Left 2
SYMATTR Value .1µ
SYMATTR InstName C4
SYMBOL res 288 352 R0
SYMATTR InstName R6
SYMATTR Value 3.3Meg
SYMBOL voltage -528 224 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(1 9 0 50m 50m 0 100m)
SYMBOL opamps\\LT1055A 192 176 R0
WINDOW 3 9 101 Left 2
SYMATTR InstName U1
TEXT 112 616 Left 2 !.model LM329 D(Ron=1 Vrev=6.95)
TEXT 480 544 Left 2 !.tran 100m
TEXT 104 -72 Bottom 2 ;1Hz to 10KHz Voltage-to-Frequency Converter