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wowmeter
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DIY WOW and Flutter meter from Audio issue of june 1983
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wowmeter/wowmeter.sch

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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "Wow and Flutter meter"
Date "06/1983"
Rev ""
Comp ""
Comment1 "See \"Audio-1983-06.pdf\" Pages 66-71"
Comment2 "Extracted from \"Audio\" Issue of June 1983"
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L d_power:RAC10-15DK_277 U1
U 1 1 5F26D025
P 1600 7050
F 0 "U1" H 1575 7375 50 0000 C CNN
F 1 "RAC10-15DK_277" H 1575 7284 50 0000 C CNN
F 2 "d_power:RAC10-15DK_277" H 1650 7300 50 0001 C CNN
F 3 "" H 1650 7300 50 0001 C CNN
1 1600 7050
1 0 0 -1
$EndComp
$Comp
L power:+15V #PWR0101
U 1 1 5F26D550
P 2400 7150
F 0 "#PWR0101" H 2400 7000 50 0001 C CNN
F 1 "+15V" H 2415 7323 50 0000 C CNN
F 2 "" H 2400 7150 50 0001 C CNN
F 3 "" H 2400 7150 50 0001 C CNN
1 2400 7150
-1 0 0 1
$EndComp
$Comp
L power:-15V #PWR0102
U 1 1 5F26DBDB
P 2400 6950
F 0 "#PWR0102" H 2400 7050 50 0001 C CNN
F 1 "-15V" H 2415 7123 50 0000 C CNN
F 2 "" H 2400 6950 50 0001 C CNN
F 3 "" H 2400 6950 50 0001 C CNN
1 2400 6950
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR0103
U 1 1 5F26E09A
P 2400 7050
F 0 "#PWR0103" H 2400 6800 50 0001 C CNN
F 1 "GND" V 2405 6922 50 0000 R CNN
F 2 "" H 2400 7050 50 0001 C CNN
F 3 "" H 2400 7050 50 0001 C CNN
1 2400 7050
0 -1 -1 0
$EndComp
Wire Wire Line
2100 6950 2400 6950
Wire Wire Line
2400 7050 2100 7050
Wire Wire Line
2100 7150 2400 7150
Text Notes 1100 6400 0 118 ~ 0
Power
$Comp
L Connector:Conn_Coaxial J1
U 1 1 5F271C83
P 650 2000
F 0 "J1" H 578 2238 50 0000 C CNN
F 1 "Audio IN" H 578 2147 50 0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 650 2000 50 0001 C CNN
F 3 " ~" H 650 2000 50 0001 C CNN
F 4 "RCA" H 650 2000 50 0001 C CNN "Note"
1 650 2000
-1 0 0 -1
$EndComp
$Comp
L Device:R R1
U 1 1 5F2732A1
P 1150 2150
F 0 "R1" H 1220 2196 50 0000 L CNN
F 1 "100k" H 1220 2105 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 1080 2150 50 0001 C CNN
F 3 "~" H 1150 2150 50 0001 C CNN
1 1150 2150
1 0 0 -1
$EndComp
$Comp
L Device:R R2
U 1 1 5F273522
P 1150 2650
F 0 "R2" H 1220 2696 50 0000 L CNN
F 1 "4.7k" H 1220 2605 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 1080 2650 50 0001 C CNN
F 3 "~" H 1150 2650 50 0001 C CNN
1 1150 2650
1 0 0 -1
$EndComp
$Comp
L Connector:TestPoint TP1
U 1 1 5F273AE0
P 1150 2400
F 0 "TP1" V 1104 2588 50 0000 L CNN
F 1 "TestPoint" V 1195 2588 50 0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical" H 1350 2400 50 0001 C CNN
F 3 "~" H 1350 2400 50 0001 C CNN
1 1150 2400
0 1 1 0
$EndComp
Wire Wire Line
1150 2300 1150 2400
Wire Wire Line
1150 2400 1150 2500
Connection ~ 1150 2400
$Comp
L Device:C C2
U 1 1 5F2744F1
P 1700 3000
F 0 "C2" V 1448 3000 50 0000 C CNN
F 1 "0.022uF cerdisc" V 1539 3000 50 0000 C CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 1700 3000 50 0001 C CNN
F 3 "~" H 1700 3000 50 0001 C CNN
F 4 "Ceramic disc" H 1700 3000 50 0001 C CNN "Note"
1 1700 3000
0 1 1 0
$EndComp
$Comp
L power:GND #PWR0104
U 1 1 5F275FBC
P 650 3000
F 0 "#PWR0104" H 650 2750 50 0001 C CNN
F 1 "GND" H 655 2827 50 0000 C CNN
F 2 "" H 650 3000 50 0001 C CNN
F 3 "" H 650 3000 50 0001 C CNN
1 650 3000
1 0 0 -1
$EndComp
Wire Wire Line
650 2200 650 3000
Wire Wire Line
650 3000 1150 3000
Connection ~ 650 3000
Wire Wire Line
1150 2800 1150 3000
Connection ~ 1150 3000
Wire Wire Line
1150 3000 1550 3000
Wire Wire Line
850 2000 1150 2000
$Comp
L Switch:SW_SPST S2
U 1 1 5F276E52
P 1650 2000
F 0 "S2" H 1650 2235 50 0000 C CNN
F 1 "???" H 1650 2144 50 0000 C CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical" H 1650 2000 50 0001 C CNN
F 3 "~" H 1650 2000 50 0001 C CNN
1 1650 2000
1 0 0 -1
$EndComp
$Comp
L d_opamp:LF351 IC1
U 1 1 5F278787
P 2550 1900
F 0 "IC1" H 2200 1900 50 0000 L CNN
F 1 "LF351" H 2100 1750 50 0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 2600 1950 50 0001 C CNN
F 3 "https://www.st.com/resource/en/datasheet/lf351.pdf" H 2700 2050 50 0001 C CNN
F 4 "Or LF13741" H 2550 1900 50 0001 C CNN "Note"
1 2550 1900
1 0 0 -1
$EndComp
NoConn ~ 2550 2200
NoConn ~ 2650 2200
Wire Wire Line
1150 2000 1450 2000
Connection ~ 1150 2000
Wire Wire Line
1850 2000 2250 2000
Wire Wire Line
2250 1800 2150 1800
Wire Wire Line
2150 1800 2150 1500
Wire Wire Line
2150 1500 2950 1500
Wire Wire Line
2950 1500 2950 1900
Wire Wire Line
2950 1900 2850 1900
Wire Wire Line
1850 3000 2450 3000
Wire Wire Line
2450 3000 2450 2200
$Comp
L Device:C C1
U 1 1 5F27A626
P 1700 1200
F 0 "C1" V 1448 1200 50 0000 C CNN
F 1 "0.022uF cerdisc" V 1539 1200 50 0000 C CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 1700 1200 50 0001 C CNN
F 3 "~" H 1700 1200 50 0001 C CNN
F 4 "Ceramic disc" H 1700 1200 50 0001 C CNN "Note"
1 1700 1200
0 1 1 0
$EndComp
$Comp
L power:GND #PWR0105
U 1 1 5F27AE37
P 1300 1300
F 0 "#PWR0105" H 1300 1050 50 0001 C CNN
F 1 "GND" H 1305 1127 50 0000 C CNN
F 2 "" H 1300 1300 50 0001 C CNN
F 3 "" H 1300 1300 50 0001 C CNN
1 1300 1300
1 0 0 -1
$EndComp
Wire Wire Line
1300 1300 1300 1200
Wire Wire Line
1300 1200 1550 1200
Wire Wire Line
1850 1200 2450 1200
Wire Wire Line
2450 1200 2450 1600
$Comp
L d_pll:NE565 IC2
U 1 1 5F27E70C
P 3900 2050
F 0 "IC2" H 4600 2100 50 0000 L CNN
F 1 "NE565" H 4600 2000 50 0000 L CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 3900 2050 50 0001 C CNN
F 3 "" H 3900 2050 50 0001 C CNN
F 4 "Or LM565" H 3900 2050 50 0001 C CNN "Note"
1 3900 2050
1 0 0 -1
$EndComp
Wire Wire Line
2950 1900 3400 1900
Connection ~ 2950 1900
$Comp
L power:GND #PWR0106
U 1 1 5F27F8D0
P 3300 2350
F 0 "#PWR0106" H 3300 2100 50 0001 C CNN
F 1 "GND" H 3305 2177 50 0000 C CNN
F 2 "" H 3300 2350 50 0001 C CNN
F 3 "" H 3300 2350 50 0001 C CNN
1 3300 2350
1 0 0 -1
$EndComp
Wire Wire Line
3300 2350 3300 2250
Wire Wire Line
3300 2250 3400 2250
Wire Wire Line
3800 2450 3800 2550
Wire Wire Line
3800 2550 4050 2550
Wire Wire Line
4050 2550 4050 2450
$Comp
L Device:CP1 C5
U 1 1 5F280DCC
P 4350 2600
F 0 "C5" H 4150 2650 50 0000 L CNN
F 1 "0.01uF +-10% sty/mica" H 3500 2500 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 4350 2600 50 0001 C CNN
F 3 "~" H 4350 2600 50 0001 C CNN
F 4 "styrene or silver-mica" H 4350 2600 50 0001 C CNN "Note"
1 4350 2600
1 0 0 -1
$EndComp
Wire Wire Line
2450 3000 4350 3000
Wire Wire Line
4350 3000 4350 2750
Connection ~ 2450 3000
$Comp
L Device:D_Zener D2
U 1 1 5F282415
P 4350 3150
F 0 "D2" V 4396 3070 50 0000 R CNN
F 1 "6V 500mW zener" V 4305 3070 50 0000 R CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 4350 3150 50 0001 C CNN
F 3 "~" H 4350 3150 50 0001 C CNN
1 4350 3150
0 -1 -1 0
$EndComp
Connection ~ 4350 3000
$Comp
L power:GND #PWR0107
U 1 1 5F282F67
P 4350 3300
F 0 "#PWR0107" H 4350 3050 50 0001 C CNN
F 1 "GND" H 4355 3127 50 0000 C CNN
F 2 "" H 4350 3300 50 0001 C CNN
F 3 "" H 4350 3300 50 0001 C CNN
1 4350 3300
1 0 0 -1
$EndComp
Wire Wire Line
4550 2450 4550 3000
Wire Wire Line
4550 3000 4350 3000
$Comp
L Device:R_POT_US R3
U 1 1 5F283EF1
P 3850 1400
F 0 "R3" H 3783 1446 50 0000 R CNN
F 1 "10k, 15T" H 3783 1355 50 0000 R CNN
F 2 "Potentiometer_THT:Potentiometer_Bourns_3006P_Horizontal" H 3850 1400 50 0001 C CNN
F 3 "~" H 3850 1400 50 0001 C CNN
F 4 "Weston 830P, Spectrol 43P" H 3850 1400 50 0001 C CNN "Note"
1 3850 1400
1 0 0 -1
$EndComp
$Comp
L Device:R R4
U 1 1 5F285A5B
P 3850 1000
F 0 "R4" H 3920 1046 50 0000 L CNN
F 1 "5.6k" H 3920 955 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 3780 1000 50 0001 C CNN
F 3 "~" H 3850 1000 50 0001 C CNN
1 3850 1000
1 0 0 -1
$EndComp
Wire Wire Line
3850 1150 3850 1250
Wire Wire Line
3850 1550 3850 1600
Wire Wire Line
4000 1400 4100 1400
Wire Wire Line
4100 1400 4100 1600
Wire Wire Line
4100 1600 3850 1600
Connection ~ 3850 1600
Wire Wire Line
3850 1600 3850 1700
Wire Wire Line
3850 850 3850 750
Wire Wire Line
3850 750 4550 750
Wire Wire Line
4550 750 4550 1200
Connection ~ 2450 1200
Wire Wire Line
2450 1200 4550 1200
Connection ~ 4550 1200
Wire Wire Line
4550 1200 4550 1700
$Comp
L Device:CP1 C4
U 1 1 5F288FD0
P 5350 1600
F 0 "C4" V 5602 1600 50 0000 C CNN
F 1 "0.001uF" V 5511 1600 50 0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 5350 1600 50 0001 C CNN
F 3 "~" H 5350 1600 50 0001 C CNN
1 5350 1600
0 -1 -1 0
$EndComp
$Comp
L Device:CP1 C3
U 1 1 5F28A66F
P 5600 1000
F 0 "C3" H 5715 1046 50 0000 L CNN
F 1 "0.1uF" H 5715 955 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 5600 1000 50 0001 C CNN
F 3 "~" H 5600 1000 50 0001 C CNN
1 5600 1000
1 0 0 -1
$EndComp
Wire Wire Line
4550 750 5600 750
Wire Wire Line
5600 750 5600 850
Connection ~ 4550 750
Wire Wire Line
5600 1150 5600 1600
Wire Wire Line
5600 1600 5500 1600
Wire Wire Line
5200 1600 4100 1600
Connection ~ 4100 1600
Wire Wire Line
5050 1900 5600 1900
Wire Wire Line
5600 1900 5600 1600
Connection ~ 5600 1600
$Comp
L Device:D_Zener D1
U 1 1 5F28E6C5
P 6050 1000
F 0 "D1" V 6004 1080 50 0000 L CNN
F 1 "6V 500mW zener" V 5950 800 50 0000 L CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 6050 1000 50 0001 C CNN
F 3 "~" H 6050 1000 50 0001 C CNN
1 6050 1000
0 1 1 0
$EndComp
$Comp
L power:GND #PWR0108
U 1 1 5F28F3BB
P 6050 1350
F 0 "#PWR0108" H 6050 1100 50 0001 C CNN
F 1 "GND" H 6055 1177 50 0000 C CNN
F 2 "" H 6050 1350 50 0001 C CNN
F 3 "" H 6050 1350 50 0001 C CNN
1 6050 1350
1 0 0 -1
$EndComp
$Comp
L Device:R R6
U 1 1 5F290035
P 6400 1250
F 0 "R6" V 6193 1250 50 0000 C CNN
F 1 "13k" V 6284 1250 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 6330 1250 50 0001 C CNN
F 3 "~" H 6400 1250 50 0001 C CNN
1 6400 1250
0 1 1 0
$EndComp
$Comp
L Device:R R5
U 1 1 5F290C35
P 6400 750
F 0 "R5" V 6193 750 50 0000 C CNN
F 1 "560R 1/2w" V 6284 750 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 6330 750 50 0001 C CNN
F 3 "~" H 6400 750 50 0001 C CNN
1 6400 750
0 1 1 0
$EndComp
Wire Wire Line
5600 750 6050 750
Connection ~ 5600 750
Wire Wire Line
6050 850 6050 750
Connection ~ 6050 750
Wire Wire Line
6050 750 6250 750
Wire Wire Line
6050 1350 6050 1250
Wire Wire Line
6250 1250 6050 1250
Connection ~ 6050 1250
Wire Wire Line
6050 1250 6050 1150
$Comp
L Device:R R8
U 1 1 5F294517
P 6500 1900
F 0 "R8" V 6293 1900 50 0000 C CNN
F 1 "120k" V 6384 1900 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 6430 1900 50 0001 C CNN
F 3 "~" H 6500 1900 50 0001 C CNN
1 6500 1900
0 1 1 0
$EndComp
$Comp
L Device:R R7
U 1 1 5F295485
P 6000 1900
F 0 "R7" V 5793 1900 50 0000 C CNN
F 1 "120k" V 5884 1900 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 5930 1900 50 0001 C CNN
F 3 "~" H 6000 1900 50 0001 C CNN
1 6000 1900
0 1 1 0
$EndComp
$Comp
L Device:CP1 C6
U 1 1 5F295CF4
P 6250 2050
F 0 "C6" H 6365 2096 50 0000 L CNN
F 1 "0.01uF +-10% sty/mica" H 6100 1950 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 6250 2050 50 0001 C CNN
F 3 "~" H 6250 2050 50 0001 C CNN
F 4 "styrene or silver-mica" H 6250 2050 50 0001 C CNN "Note"
1 6250 2050
1 0 0 -1
$EndComp
$Comp
L Device:CP1 C7
U 1 1 5F296CC8
P 6750 2050
F 0 "C7" H 6865 2096 50 0000 L CNN
F 1 "0.01uF +-10% sty/mica" H 6700 1850 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 6750 2050 50 0001 C CNN
F 3 "~" H 6750 2050 50 0001 C CNN
F 4 "styrene or silver-mica" H 6750 2050 50 0001 C CNN "Note"
1 6750 2050
1 0 0 -1
$EndComp
Wire Wire Line
5850 1900 5600 1900
Connection ~ 5600 1900
Wire Wire Line
6150 1900 6250 1900
Wire Wire Line
6250 1900 6350 1900
Connection ~ 6250 1900
Wire Wire Line
6650 1900 6750 1900
$Comp
L power:GND #PWR0109
U 1 1 5F29A896
P 6750 2200
F 0 "#PWR0109" H 6750 1950 50 0001 C CNN
F 1 "GND" H 6755 2027 50 0000 C CNN
F 2 "" H 6750 2200 50 0001 C CNN
F 3 "" H 6750 2200 50 0001 C CNN
1 6750 2200
1 0 0 -1
$EndComp
$Comp
L d_opamp:µA747 IC3
U 1 1 5F29F651
P 7300 1800
F 0 "IC3" H 7400 2215 50 0000 C CNN
F 1 "µA747" H 7400 2124 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 7150 1950 50 0001 C CNN
F 3 "" H 7150 1950 50 0001 C CNN
F 4 "Or LM747 in 14pin package" H 7300 1800 50 0001 C CNN "Note"
1 7300 1800
1 0 0 -1
$EndComp
Wire Wire Line
6750 1900 7050 1900
Connection ~ 6750 1900
Wire Wire Line
7050 1700 6750 1700
Wire Wire Line
6750 1700 6750 1250
Wire Wire Line
6750 1250 6550 1250
$Comp
L Device:R R10
U 1 1 5F2A4537
P 7950 1500
F 0 "R10" H 8020 1546 50 0000 L CNN
F 1 "9.1k" H 8020 1455 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 7880 1500 50 0001 C CNN
F 3 "~" H 7950 1500 50 0001 C CNN
1 7950 1500
1 0 0 -1
$EndComp
Wire Wire Line
7750 1800 7950 1800
Wire Wire Line
7950 1800 7950 1650
Wire Wire Line
6750 1250 7950 1250
Wire Wire Line
7950 1250 7950 1350
Connection ~ 6750 1250
$Comp
L d_opamp:µA747 IC3
U 3 1 5F2A7712
P 4350 7000
F 0 "IC3" H 4450 7415 50 0000 C CNN
F 1 "µA747" H 4450 7324 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 4200 7150 50 0001 C CNN
F 3 "" H 4200 7150 50 0001 C CNN
F 4 "Or LM747 in 14pin package" H 4350 7000 50 0001 C CNN "Note"
3 4350 7000
1 0 0 -1
$EndComp
Wire Wire Line
6250 2200 6250 2500
Wire Wire Line
6250 2500 7950 2500
Wire Wire Line
7950 2500 7950 1800
Connection ~ 7950 1800
$Comp
L power:-15V #PWR0110
U 1 1 5F2AA034
P 3950 6850
F 0 "#PWR0110" H 3950 6950 50 0001 C CNN
F 1 "-15V" H 3965 7023 50 0000 C CNN
F 2 "" H 3950 6850 50 0001 C CNN
F 3 "" H 3950 6850 50 0001 C CNN
1 3950 6850
1 0 0 -1
$EndComp
Wire Wire Line
3950 6850 3950 6900
Wire Wire Line
3950 6900 4100 6900
$Comp
L power:-15V #PWR0111
U 1 1 5F2ABAC2
P 9500 3000
F 0 "#PWR0111" H 9500 3100 50 0001 C CNN
F 1 "-15V" H 9515 3173 50 0000 C CNN
F 2 "" H 9500 3000 50 0001 C CNN
F 3 "" H 9500 3000 50 0001 C CNN
1 9500 3000
0 1 1 0
$EndComp
$Comp
L Device:LED D3
U 1 1 5F2AC33C
P 6000 3000
F 0 "D3" H 5993 2745 50 0000 C CNN
F 1 "LED" H 5993 2836 50 0000 C CNN
F 2 "LED_THT:LED_D5.0mm" H 6000 3000 50 0001 C CNN
F 3 "~" H 6000 3000 50 0001 C CNN
1 6000 3000
-1 0 0 1
$EndComp
$Comp
L Device:R R9
U 1 1 5F2ACF7F
P 6500 3000
F 0 "R9" V 6293 3000 50 0000 C CNN
F 1 "430R 1/2w" V 6384 3000 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 6430 3000 50 0001 C CNN
F 3 "~" H 6500 3000 50 0001 C CNN
1 6500 3000
0 1 1 0
$EndComp
Wire Wire Line
4550 3000 5850 3000
Connection ~ 4550 3000
Wire Wire Line
6150 3000 6350 3000
$Comp
L Device:C C8
U 1 1 5F2B1B4D
P 3800 7250
F 0 "C8" H 3915 7296 50 0000 L CNN
F 1 "0.022uF cerdisc" H 3915 7205 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 3800 7250 50 0001 C CNN
F 3 "~" H 3800 7250 50 0001 C CNN
F 4 "Ceramic disc" H 3800 7250 50 0001 C CNN "Note"
1 3800 7250
1 0 0 -1
$EndComp
$Comp
L power:+15V #PWR0112
U 1 1 5F2B2631
P 3550 7100
F 0 "#PWR0112" H 3550 6950 50 0001 C CNN
F 1 "+15V" H 3565 7273 50 0000 C CNN
F 2 "" H 3550 7100 50 0001 C CNN
F 3 "" H 3550 7100 50 0001 C CNN
1 3550 7100
0 -1 -1 0
$EndComp
Wire Wire Line
3800 7100 4100 7100
Wire Wire Line
3550 7100 3800 7100
Connection ~ 3800 7100
$Comp
L power:GND #PWR0113
U 1 1 5F2B7583
P 3800 7400
F 0 "#PWR0113" H 3800 7150 50 0001 C CNN
F 1 "GND" V 3805 7272 50 0000 R CNN
F 2 "" H 3800 7400 50 0001 C CNN
F 3 "" H 3800 7400 50 0001 C CNN
1 3800 7400
1 0 0 -1
$EndComp
$Comp
L Device:C C12
U 1 1 5F2BA1E5
P 3550 6750
F 0 "C12" H 3435 6704 50 0000 R CNN
F 1 "0.022uF cerdisc" H 3900 6600 50 0000 R CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 3550 6750 50 0001 C CNN
F 3 "~" H 3550 6750 50 0001 C CNN
F 4 "Ceramic disc" H 3550 6750 50 0001 C CNN "Note"
1 3550 6750
-1 0 0 1
$EndComp
$Comp
L power:GND #PWR0114
U 1 1 5F2BBD9B
P 3550 6600
F 0 "#PWR0114" H 3550 6350 50 0001 C CNN
F 1 "GND" V 3555 6472 50 0000 R CNN
F 2 "" H 3550 6600 50 0001 C CNN
F 3 "" H 3550 6600 50 0001 C CNN
1 3550 6600
-1 0 0 1
$EndComp
Wire Wire Line
3550 7100 3550 7000
Connection ~ 3550 7100
Wire Wire Line
4100 7000 3550 7000
Connection ~ 3550 7000
Wire Wire Line
3550 7000 3550 6900
NoConn ~ 4800 7000
NoConn ~ 4200 1700
NoConn ~ 4250 1700
NoConn ~ 4300 1700
NoConn ~ 4350 1700
NoConn ~ 7350 2050
NoConn ~ 7450 2000
$Comp
L Device:CP1 C10
U 1 1 5F2CAD57
P 8250 1800
F 0 "C10" V 8502 1800 50 0000 C CNN
F 1 "0.22uF" V 8411 1800 50 0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 8250 1800 50 0001 C CNN
F 3 "~" H 8250 1800 50 0001 C CNN
1 8250 1800
0 -1 -1 0
$EndComp
Wire Wire Line
8100 1800 7950 1800
$Comp
L d_opamp:LF351 IC4
U 1 1 5F2E5054
P 8800 1700
F 0 "IC4" H 8750 1950 50 0000 L CNN
F 1 "LF351" H 8800 2050 50 0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 8850 1750 50 0001 C CNN
F 3 "https://www.st.com/resource/en/datasheet/lf351.pdf" H 8950 1850 50 0001 C CNN
F 4 "Or LF13741" H 8800 1700 50 0001 C CNN "Note"
1 8800 1700
1 0 0 -1
$EndComp
$Comp
L Device:R R11
U 1 1 5F2E63B2
P 8450 2250
F 0 "R11" H 8520 2296 50 0000 L CNN
F 1 "4.7M" H 8520 2205 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 8380 2250 50 0001 C CNN
F 3 "~" H 8450 2250 50 0001 C CNN
1 8450 2250
1 0 0 -1
$EndComp
$Comp
L Device:R_POT_US R12
U 1 1 5F2E684C
P 8950 2300
F 0 "R12" V 8850 2300 50 0000 C CNN
F 1 "10k single-turn" V 9050 2650 50 0000 C CNN
F 2 "Potentiometer_THT:Potentiometer_Bourns_3386P_Vertical" H 8950 2300 50 0001 C CNN
F 3 "~" H 8950 2300 50 0001 C CNN
1 8950 2300
0 1 1 0
$EndComp
$Comp
L Device:C C9
U 1 1 5F2E878A
P 8600 2650
F 0 "C9" V 8348 2650 50 0000 C CNN
F 1 "0.022uF cerdisc" V 8450 2450 50 0000 C CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 8600 2650 50 0001 C CNN
F 3 "~" H 8600 2650 50 0001 C CNN
F 4 "Ceramic disc" H 8600 2650 50 0001 C CNN "Note"
1 8600 2650
0 1 1 0
$EndComp
$Comp
L Device:R R14
U 1 1 5F2E92C5
P 9200 1450
F 0 "R14" H 9270 1496 50 0000 L CNN
F 1 "43k" H 9270 1405 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 9130 1450 50 0001 C CNN
F 3 "~" H 9200 1450 50 0001 C CNN
1 9200 1450
1 0 0 -1
$EndComp
$Comp
L Device:R R13
U 1 1 5F2E99DD
P 9500 1700
F 0 "R13" V 9293 1700 50 0000 C CNN
F 1 "4.7k" V 9384 1700 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 9430 1700 50 0001 C CNN
F 3 "~" H 9500 1700 50 0001 C CNN
1 9500 1700
0 1 1 0
$EndComp
$Comp
L Device:C C11
U 1 1 5F2EC8C8
P 9900 1900
F 0 "C11" V 9650 1900 50 0000 C CNN
F 1 "0.022uF cerdisc" V 9750 1900 50 0000 C CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 9900 1900 50 0001 C CNN
F 3 "~" H 9900 1900 50 0001 C CNN
F 4 "Ceramic disc" H 9900 1900 50 0001 C CNN "Note"
1 9900 1900
0 -1 -1 0
$EndComp
$Comp
L Device:R R15
U 1 1 5F2F1F8C
P 9500 1100
F 0 "R15" V 9293 1100 50 0000 C CNN
F 1 "1k" V 9384 1100 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 9430 1100 50 0001 C CNN
F 3 "~" H 9500 1100 50 0001 C CNN
1 9500 1100
0 1 1 0
$EndComp
Wire Wire Line
8400 1800 8450 1800
Wire Wire Line
8450 2100 8450 1800
Connection ~ 8450 1800
Wire Wire Line
8450 1800 8500 1800
$Comp
L power:GND #PWR0115
U 1 1 5F2F6529
P 8450 2700
F 0 "#PWR0115" H 8450 2450 50 0001 C CNN
F 1 "GND" H 8455 2527 50 0000 C CNN
F 2 "" H 8450 2700 50 0001 C CNN
F 3 "" H 8450 2700 50 0001 C CNN
1 8450 2700
1 0 0 -1
$EndComp
Wire Wire Line
8450 2400 8450 2650
Wire Wire Line
8450 2650 8450 2700
Connection ~ 8450 2650
Wire Wire Line
8950 2450 8950 2650
Wire Wire Line
8950 2650 8750 2650
Wire Wire Line
8750 2650 8750 2500
Wire Wire Line
8750 2500 8700 2500
Wire Wire Line
8700 2500 8700 2000
Connection ~ 8750 2650
Wire Wire Line
8800 2300 8800 2000
Wire Wire Line
8900 2000 9100 2000
Wire Wire Line
9100 2000 9100 2300
Wire Wire Line
8750 2650 8750 3000
Wire Wire Line
8750 3000 9500 3000
Wire Wire Line
6650 3000 8750 3000
Connection ~ 8750 3000
Wire Wire Line
9500 750 8700 750
$Comp
L power:+15V #PWR0116
U 1 1 5F2BB018
P 9500 750
F 0 "#PWR0116" H 9500 600 50 0001 C CNN
F 1 "+15V" H 9515 923 50 0000 C CNN
F 2 "" H 9500 750 50 0001 C CNN
F 3 "" H 9500 750 50 0001 C CNN
1 9500 750
0 1 1 0
$EndComp
Wire Wire Line
8700 1400 8700 750
Connection ~ 8700 750
Wire Wire Line
8700 750 6550 750
Wire Wire Line
8500 1600 8450 1600
Wire Wire Line
8450 1600 8450 1100
Wire Wire Line
8450 1100 9200 1100
$Comp
L power:GND #PWR0117
U 1 1 5F31DC46
P 9800 1150
F 0 "#PWR0117" H 9800 900 50 0001 C CNN
F 1 "GND" H 9805 977 50 0000 C CNN
F 2 "" H 9800 1150 50 0001 C CNN
F 3 "" H 9800 1150 50 0001 C CNN
1 9800 1150
1 0 0 -1
$EndComp
Wire Wire Line
9800 1150 9800 1100
Wire Wire Line
9800 1100 9650 1100
Wire Wire Line
9200 1300 9200 1100
Connection ~ 9200 1100
Wire Wire Line
9200 1100 9350 1100
Wire Wire Line
9100 1700 9200 1700
Wire Wire Line
9200 1700 9200 1600
Wire Wire Line
9200 1700 9350 1700
Connection ~ 9200 1700
Wire Wire Line
9650 1700 9700 1700
Wire Wire Line
9750 1900 9700 1900
Wire Wire Line
9700 1900 9700 1700
Connection ~ 9700 1700
Wire Wire Line
9700 1700 10200 1700
$Comp
L power:GND #PWR0118
U 1 1 5F335654
P 10450 1900
F 0 "#PWR0118" H 10450 1650 50 0001 C CNN
F 1 "GND" H 10455 1727 50 0000 C CNN
F 2 "" H 10450 1900 50 0001 C CNN
F 3 "" H 10450 1900 50 0001 C CNN
1 10450 1900
1 0 0 -1
$EndComp
Wire Wire Line
10050 1900 10450 1900
$Comp
L d_opamp:µA747 IC3
U 2 1 5F33D286
P 6850 4000
F 0 "IC3" H 6950 4415 50 0000 C CNN
F 1 "µA747" H 6950 4324 50 0000 C CNN
F 2 "Package_DIP:DIP-14_W7.62mm" H 6700 4150 50 0001 C CNN
F 3 "" H 6700 4150 50 0001 C CNN
F 4 "Or LM747 in 14pin package" H 6850 4000 50 0001 C CNN "Note"
2 6850 4000
1 0 0 -1
$EndComp
$Comp
L d_opamp:LF351 IC5
U 1 1 5F33E403
P 8800 3900
F 0 "IC5" H 8800 4150 50 0000 L CNN
F 1 "LF351" H 9000 3800 50 0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 8850 3950 50 0001 C CNN
F 3 "https://www.st.com/resource/en/datasheet/lf351.pdf" H 8950 4050 50 0001 C CNN
F 4 "Or LF13741" H 8800 3900 50 0001 C CNN "Note"
1 8800 3900
1 0 0 -1
$EndComp
$Comp
L Device:R_POT_US R17
U 1 1 5F33EDFC
P 5600 3800
F 0 "R17" H 5533 3846 50 0000 R CNN
F 1 "47k single-turn" H 5900 3600 50 0000 R CNN
F 2 "Potentiometer_THT:Potentiometer_Bourns_3386P_Vertical" H 5600 3800 50 0001 C CNN
F 3 "~" H 5600 3800 50 0001 C CNN
1 5600 3800
1 0 0 -1
$EndComp
$Comp
L Device:R R16
U 1 1 5F33F6F9
P 6150 3350
F 0 "R16" V 5943 3350 50 0000 C CNN
F 1 "10k" V 6034 3350 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 6080 3350 50 0001 C CNN
F 3 "~" H 6150 3350 50 0001 C CNN
1 6150 3350
0 1 1 0
$EndComp
$Comp
L Device:R R18
U 1 1 5F33F944
P 6000 4700
F 0 "R18" V 5793 4700 50 0000 C CNN
F 1 "10k" V 5884 4700 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 5930 4700 50 0001 C CNN
F 3 "~" H 6000 4700 50 0001 C CNN
1 6000 4700
0 1 1 0
$EndComp
$Comp
L Device:R R19
U 1 1 5F33FB51
P 6500 4900
F 0 "R19" H 6430 4854 50 0000 R CNN
F 1 "750k" H 6430 4945 50 0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 6430 4900 50 0001 C CNN
F 3 "~" H 6500 4900 50 0001 C CNN
1 6500 4900
-1 0 0 1
$EndComp
$Comp
L power:GND #PWR0119
U 1 1 5F33FF2F
P 6500 5050
F 0 "#PWR0119" H 6500 4800 50 0001 C CNN
F 1 "GND" H 6505 4877 50 0000 C CNN
F 2 "" H 6500 5050 50 0001 C CNN
F 3 "" H 6500 5050 50 0001 C CNN
1 6500 5050
1 0 0 -1
$EndComp
$Comp
L Device:R_POT_US R20
U 1 1 5F34038E
P 7050 4500
F 0 "R20" V 6950 4500 50 0000 C CNN
F 1 "10k single-turn" V 7150 4850 50 0000 C CNN
F 2 "Potentiometer_THT:Potentiometer_Bourns_3386P_Vertical" H 7050 4500 50 0001 C CNN
F 3 "~" H 7050 4500 50 0001 C CNN
1 7050 4500
0 1 1 0
$EndComp
$Comp
L Device:R R22
U 1 1 5F34097A
P 7400 3800
F 0 "R22" H 7330 3754 50 0000 R CNN
F 1 "750k" H 7330 3845 50 0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 7330 3800 50 0001 C CNN
F 3 "~" H 7400 3800 50 0001 C CNN
1 7400 3800
-1 0 0 1
$EndComp
$Comp
L Device:R R21
U 1 1 5F340E48
P 7750 4000
F 0 "R21" V 7543 4000 50 0000 C CNN
F 1 "4.7M" V 7634 4000 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 7680 4000 50 0001 C CNN
F 3 "~" H 7750 4000 50 0001 C CNN
1 7750 4000
0 1 1 0
$EndComp
$Comp
L Device:CP1 C13
U 1 1 5F341116
P 8400 4300
F 0 "C13" H 8150 4350 50 0000 L CNN
F 1 "0.22uF" H 8050 4250 50 0000 L CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.50mm" H 8400 4300 50 0001 C CNN
F 3 "~" H 8400 4300 50 0001 C CNN
1 8400 4300
1 0 0 -1
$EndComp
$Comp
L Device:C C14
U 1 1 5F3417F5
P 8700 4850
F 0 "C14" H 8450 4900 50 0000 L CNN
F 1 "0.022uF cerdisc" H 8450 4800 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 8700 4850 50 0001 C CNN
F 3 "~" H 8700 4850 50 0001 C CNN
F 4 "Ceramic disc" H 8700 4850 50 0001 C CNN "Note"
1 8700 4850
1 0 0 -1
$EndComp
Wire Wire Line
6300 3350 6500 3350
Wire Wire Line
6500 3350 6500 3900
Wire Wire Line
6500 3900 6600 3900
Wire Wire Line
7300 4000 7400 4000
Wire Wire Line
7400 4000 7400 3950
Wire Wire Line
7400 4000 7600 4000
Connection ~ 7400 4000
Wire Wire Line
7400 3650 7400 3350
Wire Wire Line
7400 3350 6500 3350
Connection ~ 6500 3350
Wire Wire Line
5600 3350 6000 3350
Wire Wire Line
5600 1900 5600 3350
Connection ~ 5600 3350
Wire Wire Line
5600 3350 5600 3650
Wire Wire Line
5750 3800 5800 3800
Wire Wire Line
5800 3800 5800 4100
Wire Wire Line
5800 4100 5600 4100
Wire Wire Line
5600 4100 5600 3950
Wire Wire Line
5600 4100 5600 4700
Wire Wire Line
5600 4700 5850 4700
Connection ~ 5600 4100
Wire Wire Line
5050 2250 5300 2250
Wire Wire Line
5300 2250 5300 4700
Connection ~ 5600 4700
Wire Wire Line
6600 4100 6500 4100
Wire Wire Line
6500 4100 6500 4700
Wire Wire Line
6150 4700 6500 4700
Connection ~ 6500 4700
Wire Wire Line
6500 4700 6500 4750
Wire Wire Line
6900 4500 6900 4250
Wire Wire Line
7000 4200 7000 4250
Wire Wire Line
7000 4250 7200 4250
Wire Wire Line
7200 4250 7200 4500
$Comp
L power:-15V #PWR0120
U 1 1 5F3925AE
P 9500 4700
F 0 "#PWR0120" H 9500 4800 50 0001 C CNN
F 1 "-15V" H 9515 4873 50 0000 C CNN
F 2 "" H 9500 4700 50 0001 C CNN
F 3 "" H 9500 4700 50 0001 C CNN
1 9500 4700
0 1 1 0
$EndComp
Wire Wire Line
9500 4700 8700 4700
Wire Wire Line
7050 4700 7050 4650
Connection ~ 8700 4700
Wire Wire Line
8700 4700 7050 4700
Wire Wire Line
8700 4700 8700 4200
$Comp
L power:GND #PWR0121
U 1 1 5F39DE75
P 8700 5000
F 0 "#PWR0121" H 8700 4750 50 0001 C CNN
F 1 "GND" H 8705 4827 50 0000 C CNN
F 2 "" H 8700 5000 50 0001 C CNN
F 3 "" H 8700 5000 50 0001 C CNN
1 8700 5000
1 0 0 -1
$EndComp
$Comp
L power:GND #PWR0122
U 1 1 5F39E5E0
P 8400 4450
F 0 "#PWR0122" H 8400 4200 50 0001 C CNN
F 1 "GND" H 8405 4277 50 0000 C CNN
F 2 "" H 8400 4450 50 0001 C CNN
F 3 "" H 8400 4450 50 0001 C CNN
1 8400 4450
1 0 0 -1
$EndComp
Wire Wire Line
8400 4150 8400 4000
Wire Wire Line
8400 4000 8500 4000
Wire Wire Line
7900 4000 8400 4000
Connection ~ 8400 4000
$Comp
L power:+15V #PWR0123
U 1 1 5F3AA3C6
P 9500 3350
F 0 "#PWR0123" H 9500 3200 50 0001 C CNN
F 1 "+15V" H 9515 3523 50 0000 C CNN
F 2 "" H 9500 3350 50 0001 C CNN
F 3 "" H 9500 3350 50 0001 C CNN
1 9500 3350
0 1 1 0
$EndComp
Wire Wire Line
8700 3350 9500 3350
Wire Wire Line
8700 3350 8700 3600
NoConn ~ 8800 4200
NoConn ~ 8900 4200
Wire Wire Line
9100 3900 9400 3900
Wire Notes Line
500 6200 6900 6200
Wire Notes Line
6900 6200 6900 7750
$Comp
L Device:Amperemeter_DC M1
U 1 1 5F43EC97
P 2900 3850
F 0 "M1" V 3190 3850 50 0000 C CNN
F 1 "50-0-50µA microammeter" V 3099 3850 50 0000 C CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical" V 2900 3950 50 0001 C CNN
F 3 "~" V 2900 3950 50 0001 C CNN
F 4 "39LK416" H 2900 3850 50 0001 C CNN "Note"
1 2900 3850
0 -1 -1 0
$EndComp
Text GLabel 9500 3900 2 50 Input ~ 0
SPEED_METER
Text GLabel 1700 3850 0 50 Output ~ 0
SPEED_METER
$Comp
L Device:R R23
U 1 1 5F4406C6
P 2050 3850
F 0 "R23" V 1843 3850 50 0000 C CNN
F 1 "100k" V 1934 3850 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 1980 3850 50 0001 C CNN
F 3 "~" H 2050 3850 50 0001 C CNN
1 2050 3850
0 1 1 0
$EndComp
$Comp
L power:GND #PWR0124
U 1 1 5F441B2A
P 3100 3850
F 0 "#PWR0124" H 3100 3600 50 0001 C CNN
F 1 "GND" H 3105 3677 50 0000 C CNN
F 2 "" H 3100 3850 50 0001 C CNN
F 3 "" H 3100 3850 50 0001 C CNN
1 3100 3850
0 -1 -1 0
$EndComp
Wire Wire Line
1700 3850 1900 3850
Wire Wire Line
2200 3850 2700 3850
$Comp
L d_opamp:LF351 IC8
U 1 1 5F46D2E0
P 2050 5000
F 0 "IC8" H 2250 4950 50 0000 L CNN
F 1 "LF351" H 2250 4850 50 0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 2100 5050 50 0001 C CNN
F 3 "https://www.st.com/resource/en/datasheet/lf351.pdf" H 2200 5150 50 0001 C CNN
F 4 "Or LF13741" H 2050 5000 50 0001 C CNN "Note"
1 2050 5000
1 0 0 -1
$EndComp
$Comp
L d_opamp:LF353 IC9
U 1 1 5F4764C6
P 3150 4900
F 0 "IC9" H 3250 4750 50 0000 L CNN
F 1 "LF353" H 3250 4650 50 0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 3150 4900 50 0001 C CNN
F 3 "" H 3150 4900 50 0001 C CNN
F 4 "Or LM1458, RC4558, TL072 or TL082 dual op-amp" H 3150 4900 50 0001 C CNN "Note"
1 3150 4900
1 0 0 -1
$EndComp
$Comp
L Device:C C21
U 1 1 5F478153
P 1500 5100
F 0 "C21" V 1248 5100 50 0000 C CNN
F 1 "0.22uF +=10%" V 1350 5100 50 0000 C CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 1538 4950 50 0001 C CNN
F 3 "~" H 1500 5100 50 0001 C CNN
1 1500 5100
0 1 1 0
$EndComp
$Comp
L Device:C C20
U 1 1 5F4786FD
P 1200 5100
F 0 "C20" V 948 5100 50 0000 C CNN
F 1 "0.22uF +=10%" V 1050 4800 50 0000 C CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 1238 4950 50 0001 C CNN
F 3 "~" H 1200 5100 50 0001 C CNN
1 1200 5100
0 1 1 0
$EndComp
Wire Wire Line
1650 5100 1700 5100
$Comp
L Device:R R26
U 1 1 5F481560
P 1700 5300
F 0 "R26" H 1770 5346 50 0000 L CNN
F 1 "1.5M" H 1770 5255 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 1630 5300 50 0001 C CNN
F 3 "~" H 1700 5300 50 0001 C CNN
1 1700 5300
1 0 0 -1
$EndComp
Wire Wire Line
1700 5150 1700 5100
Connection ~ 1700 5100
Wire Wire Line
1700 5100 1750 5100
$Comp
L Device:R R25
U 1 1 5F4886B4
P 1350 5300
F 0 "R25" H 1420 5346 50 0000 L CNN
F 1 "1.5M" H 1420 5255 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 1280 5300 50 0001 C CNN
F 3 "~" H 1350 5300 50 0001 C CNN
1 1350 5300
1 0 0 -1
$EndComp
Wire Wire Line
1350 5150 1350 5100
Connection ~ 1350 5100
NoConn ~ 2050 5300
NoConn ~ 2150 5300
$Comp
L Device:R R24
U 1 1 5F4A63A3
P 1550 4550
F 0 "R24" V 1343 4550 50 0000 C CNN
F 1 "13k" V 1434 4550 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 1480 4550 50 0001 C CNN
F 3 "~" H 1550 4550 50 0001 C CNN
1 1550 4550
0 1 1 0
$EndComp
$Comp
L power:GND #PWR0125
U 1 1 5F4A6D8D
P 1300 4600
F 0 "#PWR0125" H 1300 4350 50 0001 C CNN
F 1 "GND" H 1305 4427 50 0000 C CNN
F 2 "" H 1300 4600 50 0001 C CNN
F 3 "" H 1300 4600 50 0001 C CNN
1 1300 4600
1 0 0 -1
$EndComp
Wire Wire Line
1300 4600 1300 4550
Wire Wire Line
1300 4550 1400 4550
Wire Wire Line
1700 4550 1750 4550
Wire Wire Line
1750 4550 1750 4900
$Comp
L Device:R R27
U 1 1 5F4B65ED
P 2450 4850
F 0 "R27" H 2520 4896 50 0000 L CNN
F 1 "9.1k" H 2520 4805 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 2380 4850 50 0001 C CNN
F 3 "~" H 2450 4850 50 0001 C CNN
1 2450 4850
1 0 0 -1
$EndComp
Wire Wire Line
2350 5000 2450 5000
Wire Wire Line
2450 4700 2450 4550
Wire Wire Line
2450 4550 1750 4550
Connection ~ 1750 4550
NoConn ~ 2150 4700
Wire Wire Line
2450 5000 2900 5000
Connection ~ 2450 5000
Wire Wire Line
1350 5450 1350 5800
Wire Wire Line
1350 5800 2450 5800
Wire Wire Line
2450 5800 2450 5000
$Comp
L power:GND #PWR0126
U 1 1 5F4EEE6B
P 1700 5550
F 0 "#PWR0126" H 1700 5300 50 0001 C CNN
F 1 "GND" H 1705 5377 50 0000 C CNN
F 2 "" H 1700 5550 50 0001 C CNN
F 3 "" H 1700 5550 50 0001 C CNN
1 1700 5550
1 0 0 -1
$EndComp
Wire Wire Line
1700 5550 1700 5500
$Comp
L Device:C_Small C22
U 1 1 5F500AF3
P 1800 5500
F 0 "C22" V 1900 5500 50 0000 C CNN
F 1 "0.022uF cerdisc" V 1900 5950 50 0000 C CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 1800 5500 50 0001 C CNN
F 3 "~" H 1800 5500 50 0001 C CNN
F 4 "Ceramic disc" H 1800 5500 50 0001 C CNN "Note"
1 1800 5500
0 1 1 0
$EndComp
Connection ~ 1700 5500
Wire Wire Line
1700 5500 1700 5450
Wire Wire Line
1900 5500 1950 5500
Wire Wire Line
1950 5500 1950 5300
Wire Wire Line
1950 5500 3100 5500
Wire Wire Line
3100 5500 3100 5200
Connection ~ 1950 5500
Wire Wire Line
3100 5500 3300 5500
Connection ~ 3100 5500
Wire Wire Line
1950 4700 1950 4250
Wire Wire Line
1950 4250 3100 4250
Wire Wire Line
3100 4250 3100 4600
Wire Wire Line
3100 4250 3300 4250
Connection ~ 3100 4250
$Comp
L power:-15V #PWR0127
U 1 1 5F539DE2
P 3300 5500
F 0 "#PWR0127" H 3300 5600 50 0001 C CNN
F 1 "-15V" H 3315 5673 50 0000 C CNN
F 2 "" H 3300 5500 50 0001 C CNN
F 3 "" H 3300 5500 50 0001 C CNN
1 3300 5500
0 1 1 0
$EndComp
$Comp
L power:+15V #PWR0128
U 1 1 5F53A300
P 3300 4250
F 0 "#PWR0128" H 3300 4100 50 0001 C CNN
F 1 "+15V" H 3315 4423 50 0000 C CNN
F 2 "" H 3300 4250 50 0001 C CNN
F 3 "" H 3300 4250 50 0001 C CNN
1 3300 4250
0 1 1 0
$EndComp
$Comp
L Device:C C19
U 1 1 5F53ADCC
P 1800 4250
F 0 "C19" V 2052 4250 50 0000 C CNN
F 1 "0.022uF cerdisc" V 1961 4250 50 0000 C CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 1838 4100 50 0001 C CNN
F 3 "~" H 1800 4250 50 0001 C CNN
F 4 "Ceramic disc" H 1800 4250 50 0001 C CNN "Note"
1 1800 4250
0 -1 -1 0
$EndComp
Connection ~ 1950 4250
Wire Wire Line
1650 4250 1300 4250
Wire Wire Line
1300 4250 1300 4550
Connection ~ 1300 4550
$Comp
L Diode:1N4148 D6
U 1 1 5F551394
P 2850 5350
F 0 "D6" H 2850 5133 50 0000 C CNN
F 1 "1N4148" H 2850 5224 50 0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 2850 5175 50 0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 2850 5350 50 0001 C CNN
1 2850 5350
-1 0 0 1
$EndComp
$Comp
L Diode:1N4148 D7
U 1 1 5F552900
P 3700 5350
F 0 "D7" H 3700 5133 50 0000 C CNN
F 1 "1N4148" H 3700 5224 50 0000 C CNN
F 2 "Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal" H 3700 5175 50 0001 C CNN
F 3 "https://assets.nexperia.com/documents/data-sheet/1N4148_1N4448.pdf" H 3700 5350 50 0001 C CNN
1 3700 5350
-1 0 0 1
$EndComp
Wire Wire Line
2700 4800 2900 4800
Wire Wire Line
2700 4800 2700 5350
Wire Wire Line
3000 5350 3500 5350
Wire Wire Line
3500 4900 3500 5350
Connection ~ 3500 5350
Wire Wire Line
3500 5350 3550 5350
$Comp
L Device:C C23
U 1 1 5F574DBE
P 3500 4600
F 0 "C23" H 3615 4646 50 0000 L CNN
F 1 "100pF cerdisc" H 3350 4500 50 0000 L CNN
F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 3538 4450 50 0001 C CNN
F 3 "~" H 3500 4600 50 0001 C CNN
F 4 "Ceramic disc" H 3500 4600 50 0001 C CNN "Note"
1 3500 4600
1 0 0 -1
$EndComp
Wire Wire Line
3500 4750 3500 4900
Connection ~ 3500 4900
Wire Wire Line
3500 4450 3500 4400
Wire Wire Line
3500 4400 2700 4400
Wire Wire Line
2700 4400 2700 4800
Connection ~ 2700 4800
$Comp
L Device:R R28
U 1 1 5F58C1FF
P 3700 4400
F 0 "R28" V 3493 4400 50 0000 C CNN
F 1 "10k" V 3584 4400 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 3630 4400 50 0001 C CNN
F 3 "~" H 3700 4400 50 0001 C CNN
1 3700 4400
0 1 1 0
$EndComp
Wire Wire Line
3550 4400 3500 4400
Connection ~ 3500 4400
Wire Wire Line
3850 5350 3950 5350
Wire Wire Line
3950 5350 3950 5000
Wire Wire Line
3950 4800 3950 4400
Wire Wire Line
3950 4400 3850 4400
$Comp
L Device:R R29
U 1 1 5F5B062C
P 4250 4400
F 0 "R29" V 4043 4400 50 0000 C CNN
F 1 "10k" V 4134 4400 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 4180 4400 50 0001 C CNN
F 3 "~" H 4250 4400 50 0001 C CNN
1 4250 4400
0 1 1 0
$EndComp
Wire Wire Line
3950 4400 4100 4400
Connection ~ 3950 4400
Wire Wire Line
4400 4400 4600 4400
Wire Wire Line
4600 4900 4550 4900
$Comp
L Device:R R30
U 1 1 5F5C96EE
P 3950 5500
F 0 "R30" H 4020 5546 50 0000 L CNN
F 1 "4.7k" H 4020 5455 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 3880 5500 50 0001 C CNN
F 3 "~" H 3950 5500 50 0001 C CNN
1 3950 5500
1 0 0 -1
$EndComp
Connection ~ 3950 5350
$Comp
L power:GND #PWR0129
U 1 1 5F5C9FE6
P 3950 5650
F 0 "#PWR0129" H 3950 5400 50 0001 C CNN
F 1 "GND" H 3955 5477 50 0000 C CNN
F 2 "" H 3950 5650 50 0001 C CNN
F 3 "" H 3950 5650 50 0001 C CNN
1 3950 5650
1 0 0 -1
$EndComp
$Comp
L Device:R R31A1
U 1 1 5F5CACCD
P 4600 5150
F 0 "R31A1" H 4670 5196 50 0000 L CNN
F 1 "5.1k" H 4670 5105 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 4530 5150 50 0001 C CNN
F 3 "~" H 4600 5150 50 0001 C CNN
1 4600 5150
1 0 0 -1
$EndComp
$Comp
L Device:R R31B1
U 1 1 5F5CB00E
P 4600 5450
F 0 "R31B1" H 4670 5496 50 0000 L CNN
F 1 "200R" H 4670 5405 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 4530 5450 50 0001 C CNN
F 3 "~" H 4600 5450 50 0001 C CNN
1 4600 5450
1 0 0 -1
$EndComp
$Comp
L d_opamp:LF353 IC9
U 2 1 5F476C1C
P 4200 4900
F 0 "IC9" H 4250 5267 50 0000 C CNN
F 1 "LF353" H 4250 5176 50 0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm" H 4200 4900 50 0001 C CNN
F 3 "" H 4200 4900 50 0001 C CNN
F 4 "Or LM1458, RC4558, TL072 or TL082 dual op-amp" H 4200 4900 50 0001 C CNN "Note"
2 4200 4900
1 0 0 -1
$EndComp
Wire Wire Line
4600 4900 4600 5000
Wire Wire Line
4600 4900 4600 4400
Connection ~ 4600 4900
Wire Wire Line
5300 4700 5600 4700
$Comp
L d_rotary:SW_Rotary_3P S4
U 1 1 5F640E3D
P 5900 5900
F 0 "S4" H 5900 5900 50 0000 C CNN
F 1 "W & F scale" H 5950 6050 50 0000 C CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical" H 5900 6000 50 0001 C CNN
F 3 "" H 5900 6000 50 0001 C CNN
1 5900 5900
-1 0 0 1
$EndComp
Wire Wire Line
5450 5950 4600 5950
Wire Wire Line
4600 5950 4600 5600
$Comp
L Device:R R32
U 1 1 5F675F61
P 4950 5300
F 0 "R32" H 5020 5346 50 0000 L CNN
F 1 "33k" H 5020 5255 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 4880 5300 50 0001 C CNN
F 3 "~" H 4950 5300 50 0001 C CNN
1 4950 5300
1 0 0 -1
$EndComp
$Comp
L Device:R R33A1
U 1 1 5F67631D
P 5350 5150
F 0 "R33A1" H 5420 5196 50 0000 L CNN
F 1 "160k" H 5420 5105 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 5280 5150 50 0001 C CNN
F 3 "~" H 5350 5150 50 0001 C CNN
1 5350 5150
1 0 0 -1
$EndComp
$Comp
L Device:R R33B1
U 1 1 5F676AB8
P 5350 5450
F 0 "R33B1" H 5420 5496 50 0000 L CNN
F 1 "8.2k" H 5420 5405 50 0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal" V 5280 5450 50 0001 C CNN
F 3 "~" H 5350 5450 50 0001 C CNN
1 5350 5450
1 0 0 -1
$EndComp
Wire Notes Line
4500 5000 4700 5000
Wire Notes Line
4700 5000 4700 5600
Wire Notes Line
4700 5600 4500 5600
Wire Notes Line
4500 5600 4500 5000
Wire Notes Line
5250 5000 5450 5000
Wire Notes Line
5450 5000 5450 5600
Wire Notes Line
5450 5600 5250 5600
Wire Notes Line
5250 5600 5250 5000
Text Notes 4500 5500 1 50 ~ 0
5.3k total
Text Notes 5250 5550 1 50 ~ 0
168.5k total
Wire Wire Line
4600 4900 4950 4900
Wire Wire Line
4950 4900 4950 5150
Wire Wire Line
4950 4900 5350 4900
Wire Wire Line
5350 4900 5350 5000
Connection ~ 4950 4900
Wire Wire Line
4950 5450 4950 5850
Wire Wire Line
4950 5850 5450 5850
Wire Wire Line
5450 5750 5350 5750
Wire Wire Line
5350 5750 5350 5600
Text Label 4800 5950 2 50 ~ 0
0.2%
Text Label 5100 5850 2 50 ~ 0
1%
Text Label 5450 5750 2 50 ~ 0
5%
$Comp
L Device:Amperemeter_DC M2
U 1 1 5F6D9128
P 6550 5850
F 0 "M2" V 6840 5850 50 0000 C CNN
F 1 "0-50µA microammeter" V 6749 5850 50 0000 C CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical" V 6550 5950 50 0001 C CNN
F 3 "~" V 6550 5950 50 0001 C CNN
F 4 "39LK414" H 6550 5850 50 0001 C CNN "Note"
1 6550 5850
0 -1 -1 0
$EndComp
$Comp
L power:GND #PWR0130
U 1 1 5F6DA1A2
P 6750 5850
F 0 "#PWR0130" H 6750 5600 50 0001 C CNN
F 1 "GND" H 6755 5677 50 0000 C CNN
F 2 "" H 6750 5850 50 0001 C CNN
F 3 "" H 6750 5850 50 0001 C CNN
1 6750 5850
0 -1 -1 0
$EndComp
Wire Notes Line
500 3500 5150 3500
Wire Notes Line
5150 3500 5150 4800
Wire Notes Line
5150 4800 6400 4800
Wire Notes Line
6400 4800 6400 5300
Wire Notes Line
6400 5300 7050 5300
Wire Notes Line
7050 5300 7050 6500
Text Notes 3800 3700 0 118 ~ 0
Displays
Text Notes 7300 5950 0 79 ~ 0
All resistors are 5% 1/4w carbon-film unless noted.\nThe W & F accuracy part could uses <5% precision perhaps.\nAll capacitors 20V min unless noted.\n\nInput needs 10mV and be within +-30% of 3150Hz or 3000Hz.
Wire Notes Line
7100 5300 11150 5300
Text Notes 5650 3700 0 50 ~ 0
speed out\ncalibration
Text GLabel 10250 1700 2 50 Input ~ 0
WOW_METER
Text GLabel 1050 5100 0 50 Output ~ 0
WOW_METER
$Comp
L Connector:TestPoint TP2
U 1 1 5F79B14F
P 10200 1700
F 0 "TP2" V 10154 1888 50 0000 L CNN
F 1 "WOW_OUT" V 10245 1888 50 0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical" H 10400 1700 50 0001 C CNN
F 3 "~" H 10400 1700 50 0001 C CNN
1 10200 1700
1 0 0 -1
$EndComp
Connection ~ 10200 1700
Wire Wire Line
10200 1700 10250 1700
Connection ~ 9400 3900
Wire Wire Line
9400 3900 9500 3900
$Comp
L Connector:TestPoint TP3
U 1 1 5F79BD3B
P 9400 3900
F 0 "TP3" V 9354 4088 50 0000 L CNN
F 1 "SPEED-_OUT" V 9445 4088 50 0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical" H 9600 3900 50 0001 C CNN
F 3 "~" H 9600 3900 50 0001 C CNN
1 9400 3900
-1 0 0 1
$EndComp
$Comp
L Connector:TestPoint TP4
U 1 1 5F7B5877
P 8500 3800
F 0 "TP4" V 8454 3988 50 0000 L CNN
F 1 "SPEED+_OUT" V 8545 3988 50 0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical" H 8700 3800 50 0001 C CNN
F 3 "~" H 8700 3800 50 0001 C CNN
1 8500 3800
0 -1 -1 0
$EndComp
Text Notes 9150 2300 0 50 ~ 0
D.C Bal W&F\ncalibration
$Comp
L Connector_Generic:Conn_01x02 J2
U 1 1 5F7B7964
P 5250 2000
F 0 "J2" H 5330 1992 50 0000 L CNN
F 1 "CAL_JMP" H 5330 1901 50 0000 L CNN
F 2 "Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical" H 5250 2000 50 0001 C CNN
F 3 "~" H 5250 2000 50 0001 C CNN
1 5250 2000
1 0 0 -1
$EndComp
Wire Wire Line
5050 2000 5050 1900
Connection ~ 5050 1900
Wire Wire Line
5050 2100 5050 2250
Connection ~ 5050 2250
Text Notes 4900 2550 0 50 ~ 0
Jumper to uses for d.c bal\nof speed channel
Text Notes 7250 4500 0 50 ~ 0
D.C Bal speed\ncalibration
Text Notes 3950 1300 0 50 ~ 0
hz calibration
$Comp
L Connector:Screw_Terminal_01x02 J3
U 1 1 5F8465F2
P 850 7050
F 0 "J3" H 768 6725 50 0000 C CNN
F 1 "AC IN" H 768 6816 50 0000 C CNN
F 2 "TerminalBlock_Altech:Altech_AK300_1x02_P5.00mm_45-Degree" H 850 7050 50 0001 C CNN
F 3 "~" H 850 7050 50 0001 C CNN
1 850 7050
-1 0 0 1
$EndComp
$Comp
L Mechanical:MountingHole H2
U 1 1 5F87BE3C
P 5200 6700
F 0 "H2" H 5300 6746 50 0000 L CNN
F 1 "MountingHole" H 5300 6655 50 0000 L CNN
F 2 "MountingHole:MountingHole_3.2mm_M3" H 5200 6700 50 0001 C CNN
F 3 "~" H 5200 6700 50 0001 C CNN
1 5200 6700
1 0 0 -1
$EndComp
$Comp
L Mechanical:MountingHole H3
U 1 1 5F87C1DE
P 5200 6900
F 0 "H3" H 5300 6946 50 0000 L CNN
F 1 "MountingHole" H 5300 6855 50 0000 L CNN
F 2 "MountingHole:MountingHole_3.2mm_M3" H 5200 6900 50 0001 C CNN
F 3 "~" H 5200 6900 50 0001 C CNN
1 5200 6900
1 0 0 -1
$EndComp
$Comp
L Mechanical:MountingHole H4
U 1 1 5F87C3AA
P 5200 7100
F 0 "H4" H 5300 7146 50 0000 L CNN
F 1 "MountingHole" H 5300 7055 50 0000 L CNN
F 2 "MountingHole:MountingHole_3.2mm_M3" H 5200 7100 50 0001 C CNN
F 3 "~" H 5200 7100 50 0001 C CNN
1 5200 7100
1 0 0 -1
$EndComp
$Comp
L Mechanical:MountingHole H5
U 1 1 5F87C665
P 5200 7300
F 0 "H5" H 5300 7346 50 0000 L CNN
F 1 "MountingHole" H 5300 7255 50 0000 L CNN
F 2 "MountingHole:MountingHole_3.2mm_M3" H 5200 7300 50 0001 C CNN
F 3 "~" H 5200 7300 50 0001 C CNN
1 5200 7300
1 0 0 -1
$EndComp
$Comp
L Mechanical:MountingHole H6
U 1 1 5F87C89C
P 5200 7500
F 0 "H6" H 5300 7546 50 0000 L CNN
F 1 "MountingHole" H 5300 7455 50 0000 L CNN
F 2 "MountingHole:MountingHole_3.2mm_M3" H 5200 7500 50 0001 C CNN
F 3 "~" H 5200 7500 50 0001 C CNN
1 5200 7500
1 0 0 -1
$EndComp
$Comp
L Mechanical:MountingHole H1
U 1 1 5F87CAB8
P 5200 6500
F 0 "H1" H 5300 6546 50 0000 L CNN
F 1 "MountingHole" H 5300 6455 50 0000 L CNN
F 2 "MountingHole:MountingHole_3.2mm_M3" H 5200 6500 50 0001 C CNN
F 3 "~" H 5200 6500 50 0001 C CNN
1 5200 6500
1 0 0 -1
$EndComp
$EndSCHEMATC