(kicad_sch
  (version 20230121)
  (generator eeschema)
  (uuid 835a39d9-7eb8-43fb-bcd5-154dd94f67e7)
  (paper "A4")
  (title_block (title "RC 移相振荡器（运放，三节高通）") (company "EETree 电子森林"))
  (lib_symbols
    (symbol "Amplifier_Operational:LM358"
      (pin_names (offset 0.127))
      (in_bom yes)
      (on_board yes)
      (property "Reference" "U"
        (at 0 5.08 0)
        (effects (font (size 1.27 1.27)) (justify left)))
      (property "Value" "LM358"
        (at 0 -5.08 0)
        (effects (font (size 1.27 1.27)) (justify left)))
      (property "Footprint" ""
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "Datasheet" "http://www.ti.com/lit/ds/symlink/lm2904-n.pdf"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_locked" ""
        (at 0 0 0)
        (effects (font (size 1.27 1.27))))
      (property "ki_keywords" "dual opamp"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_description" "Low-Power, Dual Operational Amplifiers, DIP-8/SOIC-8/TO-99-8"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_fp_filters" "SOIC*3.9x4.9mm*P1.27mm* DIP*W7.62mm* TO*99* OnSemi*Micro8* TSSOP*3x3mm*P0.65mm* TSSOP*4.4x3mm*P0.65mm* MSOP*3x3mm*P0.65mm* SSOP*3.9x4.9mm*P0.635mm* LFCSP*2x2mm*P0.5mm* *SIP* SOIC*5.3x6.2mm*P1.27mm*"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (symbol "LM358_1_1"
        (polyline
          (pts
            (xy -5.08 5.08)
            (xy 5.08 0)
            (xy -5.08 -5.08)
            (xy -5.08 5.08))
          (stroke (width 0.254) (type default))
          (fill (type background)))
        (pin output line
          (at 7.62 0 180)
          (length 2.54)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27)))))
        (pin input line
          (at -7.62 -2.54 0)
          (length 2.54)
          (name "-" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27)))))
        (pin input line
          (at -7.62 2.54 0)
          (length 2.54)
          (name "+" (effects (font (size 1.27 1.27))))
          (number "3" (effects (font (size 1.27 1.27))))))
      (symbol "LM358_2_1"
        (polyline
          (pts
            (xy -5.08 5.08)
            (xy 5.08 0)
            (xy -5.08 -5.08)
            (xy -5.08 5.08))
          (stroke (width 0.254) (type default))
          (fill (type background)))
        (pin input line
          (at -7.62 2.54 0)
          (length 2.54)
          (name "+" (effects (font (size 1.27 1.27))))
          (number "5" (effects (font (size 1.27 1.27)))))
        (pin input line
          (at -7.62 -2.54 0)
          (length 2.54)
          (name "-" (effects (font (size 1.27 1.27))))
          (number "6" (effects (font (size 1.27 1.27)))))
        (pin output line
          (at 7.62 0 180)
          (length 2.54)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "7" (effects (font (size 1.27 1.27))))))
      (symbol "LM358_3_1"
        (pin power_in line
          (at -2.54 -7.62 90)
          (length 3.81)
          (name "V-" (effects (font (size 1.27 1.27))))
          (number "4" (effects (font (size 1.27 1.27)))))
        (pin power_in line
          (at -2.54 7.62 270)
          (length 3.81)
          (name "V+" (effects (font (size 1.27 1.27))))
          (number "8" (effects (font (size 1.27 1.27)))))))
    (symbol "Device:C"
      (pin_numbers hide)
      (pin_names (offset 0.254))
      (in_bom yes)
      (on_board yes)
      (property "Reference" "C"
        (at 0.635 2.54 0)
        (effects (font (size 1.27 1.27)) (justify left)))
      (property "Value" "C"
        (at 0.635 -2.54 0)
        (effects (font (size 1.27 1.27)) (justify left)))
      (property "Footprint" ""
        (at 0.9652 -3.81 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "Datasheet" "~"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_keywords" "cap capacitor"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_description" "Unpolarized capacitor"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_fp_filters" "C_*"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (symbol "C_0_1"
        (polyline
          (pts (xy -2.032 -0.762) (xy 2.032 -0.762))
          (stroke (width 0.508) (type default))
          (fill (type none)))
        (polyline
          (pts (xy -2.032 0.762) (xy 2.032 0.762))
          (stroke (width 0.508) (type default))
          (fill (type none))))
      (symbol "C_1_1"
        (pin passive line
          (at 0 3.81 270)
          (length 2.794)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27)))))
        (pin passive line
          (at 0 -3.81 90)
          (length 2.794)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27)))))))
    (symbol "Device:R"
      (pin_numbers hide)
      (pin_names (offset 0))
      (in_bom yes)
      (on_board yes)
      (property "Reference" "R"
        (at 2.032 0 90)
        (effects (font (size 1.27 1.27))))
      (property "Value" "R"
        (at 0 0 90)
        (effects (font (size 1.27 1.27))))
      (property "Footprint" ""
        (at -1.778 0 90)
        (effects (font (size 1.27 1.27)) hide))
      (property "Datasheet" "~"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_keywords" "R res resistor"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_description" "Resistor"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_fp_filters" "R_*"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (symbol "R_0_1"
        (rectangle
          (start -1.016 -2.54)
          (end 1.016 2.54)
          (stroke (width 0.254) (type default))
          (fill (type none))))
      (symbol "R_1_1"
        (pin passive line
          (at 0 3.81 270)
          (length 1.27)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27)))))
        (pin passive line
          (at 0 -3.81 90)
          (length 1.27)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27)))))))
    (symbol "power:GND"
      (power)
      (pin_names (offset 0))
      (in_bom yes)
      (on_board yes)
      (property "Reference" "#PWR"
        (at 0 -6.35 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "Value" "GND"
        (at 0 -3.81 0)
        (effects (font (size 1.27 1.27))))
      (property "Footprint" ""
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "Datasheet" ""
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_keywords" "global power"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_description" "Power symbol creates a global label with name \"GND\" , ground"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (symbol "GND_0_1"
        (polyline
          (pts
            (xy 0 0)
            (xy 0 -1.27)
            (xy 1.27 -1.27)
            (xy 0 -2.54)
            (xy -1.27 -1.27)
            (xy 0 -1.27))
          (stroke (width 0) (type default))
          (fill (type none))))
      (symbol "GND_1_1"
        (pin power_in line hide
          (at 0 0 270)
          (length 0)
          (name "GND" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27))))))))
  (wire
    (pts (xy 68.58 73.66) (xy 73.66 73.66))
    (stroke (width 0) (type default))
    (uuid 752c8a58-99c7-4ef5-ab0a-376c8b7ca58c))
  (wire
    (pts (xy 73.66 73.66) (xy 78.74 73.66))
    (stroke (width 0) (type default))
    (uuid 2e101084-6e87-4972-8ba6-41b3f9b1e66d))
  (wire
    (pts (xy 86.36 73.66) (xy 91.44 73.66))
    (stroke (width 0) (type default))
    (uuid d7494976-9273-41d6-9e90-c921541f656b))
  (wire
    (pts (xy 91.44 73.66) (xy 96.52 73.66))
    (stroke (width 0) (type default))
    (uuid 49df23a6-579e-4239-b19e-69ca2ade7053))
  (wire
    (pts (xy 104.14 73.66) (xy 106.68 73.66))
    (stroke (width 0) (type default))
    (uuid 8c0aba3b-056c-4b26-b04d-5b144bb428ec))
  (wire
    (pts (xy 114.3 73.66) (xy 115.57 73.66))
    (stroke (width 0) (type default))
    (uuid 357a3776-cc2a-4849-9317-46e174e7fc4e))
  (wire
    (pts (xy 115.57 73.66) (xy 119.38 73.66))
    (stroke (width 0) (type default))
    (uuid 8d4afec7-652d-4fd7-86e1-7dd599a4a15b))
  (wire
    (pts (xy 73.66 73.66) (xy 73.66 80.01))
    (stroke (width 0) (type default))
    (uuid e764a6ad-933e-4150-baac-a1df0408715d))
  (wire
    (pts (xy 91.44 73.66) (xy 91.44 80.01))
    (stroke (width 0) (type default))
    (uuid 04271329-a2b2-4fec-b777-3da60cb7d790))
  (wire
    (pts (xy 73.66 87.63) (xy 73.66 93.98))
    (stroke (width 0) (type default))
    (uuid 9d103c2a-79d6-4339-939f-99fe8366b0c4))
  (wire
    (pts (xy 91.44 87.63) (xy 91.44 93.98))
    (stroke (width 0) (type default))
    (uuid bdd2de1a-034d-4196-919d-ca5dd37d7e78))
  (wire
    (pts (xy 119.38 78.74) (xy 115.57 78.74))
    (stroke (width 0) (type default))
    (uuid 0339ec52-3453-4617-a3d9-4ae4838d54ea))
  (wire
    (pts (xy 115.57 78.74) (xy 115.57 93.98))
    (stroke (width 0) (type default))
    (uuid 567235d3-220a-48c0-8e99-c3273d0f7cb3))
  (wire
    (pts (xy 73.66 93.98) (xy 91.44 93.98))
    (stroke (width 0) (type default))
    (uuid cd6169fc-c6a2-4bf0-a725-f9409d913879))
  (wire
    (pts (xy 91.44 93.98) (xy 101.6 93.98))
    (stroke (width 0) (type default))
    (uuid 4a12ec89-575d-40fd-8c96-764f71c4a253))
  (wire
    (pts (xy 101.6 93.98) (xy 115.57 93.98))
    (stroke (width 0) (type default))
    (uuid d2ee0e9e-08cc-4d9c-89d6-e1a61fdc109e))
  (wire
    (pts (xy 115.57 73.66) (xy 115.57 63.5))
    (stroke (width 0) (type default))
    (uuid f35c197e-2386-43d7-a903-c37eb72022ee))
  (wire
    (pts (xy 115.57 63.5) (xy 123.19 63.5))
    (stroke (width 0) (type default))
    (uuid b3dd1574-ae38-4ea0-93eb-c68788fb0c4c))
  (wire
    (pts (xy 130.81 63.5) (xy 139.7 63.5))
    (stroke (width 0) (type default))
    (uuid 1c03806f-ef0f-4a7d-b9ce-ed60c25153d4))
  (wire
    (pts (xy 134.62 76.2) (xy 139.7 76.2))
    (stroke (width 0) (type default))
    (uuid e6c6d852-e7f6-4b5a-8749-043681b033ae))
  (wire
    (pts (xy 139.7 76.2) (xy 139.7 63.5))
    (stroke (width 0) (type default))
    (uuid c34cdaca-9122-42b0-890c-78c8744a28d2))
  (wire
    (pts (xy 139.7 63.5) (xy 139.7 53.34))
    (stroke (width 0) (type default))
    (uuid 6967483f-05bd-4ede-8467-5a6b67b2930e))
  (wire
    (pts (xy 139.7 53.34) (xy 58.42 53.34))
    (stroke (width 0) (type default))
    (uuid fd8e033a-8efb-4cb1-ab35-ee69ea5be384))
  (wire
    (pts (xy 58.42 53.34) (xy 58.42 73.66))
    (stroke (width 0) (type default))
    (uuid 071903d2-8dec-4da5-aebc-3a306348bef5))
  (wire
    (pts (xy 58.42 73.66) (xy 60.96 73.66))
    (stroke (width 0) (type default))
    (uuid d0f6a98a-6436-4475-b0d3-ce26a820dbc5))
  (wire
    (pts (xy 139.7 76.2) (xy 149.86 76.2))
    (stroke (width 0) (type default))
    (uuid e88dd953-a0f5-4f3f-a545-3fc720ebeb63))
  (junction
    (at 73.66 73.66)
    (diameter 0)
    (color 0 0 0 0)
    (uuid 4dca82ef-d623-4710-b5dc-2da2004db506))
  (junction
    (at 91.44 73.66)
    (diameter 0)
    (color 0 0 0 0)
    (uuid bfc65446-10d6-4633-a785-ec41f55ddf6f))
  (junction
    (at 115.57 73.66)
    (diameter 0)
    (color 0 0 0 0)
    (uuid d7062b1f-b43b-46d8-859b-585dca16a778))
  (junction
    (at 91.44 93.98)
    (diameter 0)
    (color 0 0 0 0)
    (uuid cf7a0d48-f07e-42e4-bbee-049c891d5c32))
  (junction
    (at 101.6 93.98)
    (diameter 0)
    (color 0 0 0 0)
    (uuid f19b0eb4-9bd3-4022-a805-3890a294fc1e))
  (junction
    (at 139.7 63.5)
    (diameter 0)
    (color 0 0 0 0)
    (uuid c7f8a313-33ba-4b42-b0a0-dd209ae848cd))
  (junction
    (at 139.7 76.2)
    (diameter 0)
    (color 0 0 0 0)
    (uuid 67781dcd-fad4-4eb4-bbec-0d3c439d6e45))
  (global_label "OUT"
    (shape output)
    (at 149.86 76.2 0)
    (fields_autoplaced)
    (effects (font (size 1.27 1.27)) (justify left))
    (uuid ea9d287f-76b2-407d-afec-0afa5036f09b)
    (property "Intersheetrefs" "${INTERSHEET_REFS}"
      (at 149.86 76.2 0)
      (effects (font (size 1.27 1.27)) hide)))
  (text "R3 接运放虚地，兼作反相放大器输入电阻；R1 = R2 = R3 = R，C1 = C2 = C3 = C"
    (at 58.42 104.14 0)
    (effects (font (size 1.3 1.3)) (justify left bottom))
    (uuid d538f76c-02fb-48be-bff4-0917e759f2bc))
  (text "U1 双电源 ±12 V"
    (at 142.24 88.9 0)
    (effects (font (size 1.3 1.3)) (justify left bottom))
    (uuid cced02ae-c4bf-43f6-a75f-d9d8c74cd6fb))
  (symbol
    (lib_id "Amplifier_Operational:LM358")
    (at 127.0 76.2 0)
    (mirror x)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid e9f60fde-8b70-42eb-ad3e-0219850b8af5)
    (property "Reference" "U1"
      (at 129.54 85.34400000000001 0)
      (effects (font (size 1.27 1.27)) (justify left)))
    (property "Value" "LM358"
      (at 129.54 89.408 0)
      (effects (font (size 1.27 1.27)) (justify left)))
    (pin "1" (uuid ae8bb8e3-0d2e-4d27-9ce8-5214288048a5))
    (pin "2" (uuid dce5ede1-e744-4ab3-8b9e-ad14f2dda8e4))
    (pin "3" (uuid 4d3a40b5-d83e-4513-8cb1-df0c3da86f90))
    (pin "5" (uuid df68ab4a-39ef-4e98-9d26-295a7426c363))
    (pin "6" (uuid 32d7e060-7068-470d-b394-aab5aa2d62a4))
    (pin "7" (uuid 72d2714d-e214-4848-acf2-99b9c3cd43bf))
    (pin "4" (uuid 0f33f963-3642-4398-952e-4f09d928bac4))
    (pin "8" (uuid c095ccff-e639-41ce-8da7-125cd1661909))
    (instances
      (project "phase-shift-osc"
        (path "/835a39d9-7eb8-43fb-bcd5-154dd94f67e7"
          (reference "U1")
          (unit 1)))))
  (symbol
    (lib_id "Device:C")
    (at 64.77 73.66 90)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 76247fa6-89d0-406b-bfd8-10832acff7aa)
    (property "Reference" "C1"
      (at 64.77 70.25999999999999 90)
      (effects (font (size 1.27 1.27))))
    (property "Value" "C1"
      (at 64.77 77.25999999999999 90)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 889c5972-f3b9-43a9-852b-81109ddb7ba2))
    (pin "2" (uuid 7b92c7dc-b0a0-41e2-b129-5dbffab76823))
    (instances
      (project "phase-shift-osc"
        (path "/835a39d9-7eb8-43fb-bcd5-154dd94f67e7"
          (reference "C1")
          (unit 1)))))
  (symbol
    (lib_id "Device:C")
    (at 82.55 73.66 90)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 12f3abe0-f116-43c2-a9ba-4031d1917359)
    (property "Reference" "C2"
      (at 82.55 70.25999999999999 90)
      (effects (font (size 1.27 1.27))))
    (property "Value" "C2"
      (at 82.55 77.25999999999999 90)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 7744da37-d11a-451e-92b9-3b0fd23f1599))
    (pin "2" (uuid b0e2cc39-b134-45a3-8f2e-88393b941376))
    (instances
      (project "phase-shift-osc"
        (path "/835a39d9-7eb8-43fb-bcd5-154dd94f67e7"
          (reference "C2")
          (unit 1)))))
  (symbol
    (lib_id "Device:C")
    (at 100.33 73.66 90)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 0e617565-c887-4495-82b9-b29f9d2d915c)
    (property "Reference" "C3"
      (at 100.33 70.25999999999999 90)
      (effects (font (size 1.27 1.27))))
    (property "Value" "C3"
      (at 100.33 77.25999999999999 90)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid fb4daf3e-20d9-44e5-95eb-0cac0d430209))
    (pin "2" (uuid f577dc29-cc43-40c1-9631-155313aef6d1))
    (instances
      (project "phase-shift-osc"
        (path "/835a39d9-7eb8-43fb-bcd5-154dd94f67e7"
          (reference "C3")
          (unit 1)))))
  (symbol
    (lib_id "Device:R")
    (at 110.49 73.66 90)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid c1e8f2f5-4179-4602-876a-7aaed33caa67)
    (property "Reference" "R3"
      (at 110.49 71.25999999999999 90)
      (effects (font (size 1.27 1.27))))
    (property "Value" "R3"
      (at 110.49 76.06 90)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 1daee61e-853a-4b30-b438-9429efdd1bfb))
    (pin "2" (uuid 75cb35e6-37af-4950-86a8-613cfe8235d4))
    (instances
      (project "phase-shift-osc"
        (path "/835a39d9-7eb8-43fb-bcd5-154dd94f67e7"
          (reference "R3")
          (unit 1)))))
  (symbol
    (lib_id "Device:R")
    (at 73.66 83.82 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid cc83c658-7ab2-471c-b5c3-8e53d20c94ca)
    (property "Reference" "R1"
      (at 76.25999999999999 82.82 0)
      (effects (font (size 1.27 1.27)) (justify left)))
    (property "Value" "R1"
      (at 76.25999999999999 85.41999999999999 0)
      (effects (font (size 1.27 1.27)) (justify left) hide))
    (pin "1" (uuid f23f85a3-6c1a-4760-9b96-fdabf63802e1))
    (pin "2" (uuid 464e3c1b-0792-4edc-8283-1b3c60ecbb52))
    (instances
      (project "phase-shift-osc"
        (path "/835a39d9-7eb8-43fb-bcd5-154dd94f67e7"
          (reference "R1")
          (unit 1)))))
  (symbol
    (lib_id "Device:R")
    (at 91.44 83.82 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 3f05207e-f3c7-4e15-8860-c998fc0804b1)
    (property "Reference" "R2"
      (at 94.03999999999999 82.82 0)
      (effects (font (size 1.27 1.27)) (justify left)))
    (property "Value" "R2"
      (at 94.03999999999999 85.41999999999999 0)
      (effects (font (size 1.27 1.27)) (justify left) hide))
    (pin "1" (uuid 6006f226-a2f2-40e5-a04f-b2f8ca104eef))
    (pin "2" (uuid bd53d1f2-46c8-493f-ae6e-a28e0a55bbf1))
    (instances
      (project "phase-shift-osc"
        (path "/835a39d9-7eb8-43fb-bcd5-154dd94f67e7"
          (reference "R2")
          (unit 1)))))
  (symbol
    (lib_id "power:GND")
    (at 101.6 93.98 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 054ccb60-9bdc-4788-a52b-6b2641d86c58)
    (property "Reference" "#PWR01"
      (at 101.6 93.97999999999999 0)
      (effects (font (size 1.27 1.27)) hide))
    (property "Value" "GND"
      (at 101.6 98.97999999999999 0)
      (effects (font (size 1.27 1.27))))
    (pin "1" (uuid 21afed1f-85ed-4163-be46-b0f8ed2b2082))
    (instances
      (project "phase-shift-osc"
        (path "/835a39d9-7eb8-43fb-bcd5-154dd94f67e7"
          (reference "#PWR01")
          (unit 1)))))
  (symbol
    (lib_id "Device:R")
    (at 127.0 63.5 90)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid f7fc6781-cee3-4f90-a3bb-b5da1cf761a3)
    (property "Reference" "Rf"
      (at 127.0 61.1 90)
      (effects (font (size 1.27 1.27))))
    (property "Value" "Rf"
      (at 127.0 65.9 90)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 071e9435-b065-42a6-83a6-4bc38f3e6008))
    (pin "2" (uuid 53607bcb-9ee7-4165-80dc-e0f51b9fc4a3))
    (instances
      (project "phase-shift-osc"
        (path "/835a39d9-7eb8-43fb-bcd5-154dd94f67e7"
          (reference "Rf")
          (unit 1)))))
  (sheet_instances (path "/" (page "1"))))