(export (version "E")
  (design
    (source "C:\\Users\\gayli\\Documents\\Work\\SnorkelAI\\Ohm Bench\\Review\\MicPreamp\\kicad_Mic PreampV2_circuit\\kicad_Mic PreampV2_circuit.kicad_sch")
    (date "2026-03-25T21:22:22-1000")
    (tool "Eeschema 9.0.7")
    (sheet (number "1") (name "/") (tstamps "/")
      (title_block
        (title)
        (company)
        (rev)
        (date)
        (source "kicad_Mic PreampV2_circuit.kicad_sch")
        (comment (number "1") (value ""))
        (comment (number "2") (value ""))
        (comment (number "3") (value ""))
        (comment (number "4") (value ""))
        (comment (number "5") (value ""))
        (comment (number "6") (value ""))
        (comment (number "7") (value ""))
        (comment (number "8") (value ""))
        (comment (number "9") (value "")))))
  (components
    (comp (ref "C1")
      (value "4.7uF")
      (datasheet "~")
      (description "Polarized capacitor")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Polarized capacitor"))
      (libsource (lib "Device") (part "C_Polarized") (description "Polarized capacitor"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "cap capacitor"))
      (property (name "ki_fp_filters") (value "CP_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "19f15bfa-cb87-4746-b187-ee81eb8c2143"))
    (comp (ref "C2")
      (value "4.7uF")
      (datasheet "~")
      (description "Polarized capacitor")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Polarized capacitor"))
      (libsource (lib "Device") (part "C_Polarized") (description "Polarized capacitor"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "cap capacitor"))
      (property (name "ki_fp_filters") (value "CP_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "d02c14f3-eaac-46c5-ba80-dfed2604ea88"))
    (comp (ref "C3")
      (value "4.7uF")
      (datasheet "~")
      (description "Polarized capacitor")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Polarized capacitor"))
      (libsource (lib "Device") (part "C_Polarized") (description "Polarized capacitor"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "cap capacitor"))
      (property (name "ki_fp_filters") (value "CP_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "18504931-1bbb-41b9-bb76-b0048b3a2ee8"))
    (comp (ref "D1")
      (value "D_Schottky")
      (datasheet "~")
      (description "Schottky diode")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Schottky diode"))
      (libsource (lib "Device") (part "D_Schottky") (description "Schottky diode"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "diode Schottky"))
      (property (name "ki_fp_filters") (value "TO-???* *_Diode_* *SingleDiode* D_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "9c1f1bb2-9e9b-4b62-8e43-602749270454"))
    (comp (ref "D2")
      (value "D_Schottky")
      (datasheet "~")
      (description "Schottky diode")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Schottky diode"))
      (libsource (lib "Device") (part "D_Schottky") (description "Schottky diode"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "diode Schottky"))
      (property (name "ki_fp_filters") (value "TO-???* *_Diode_* *SingleDiode* D_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "56b7d90c-bbff-46a0-863e-ceee7a21842f"))
    (comp (ref "J2")
      (value "MIC_IN")
      (datasheet "~")
      (description "Audio Jack, 2 Poles (Mono / TS), Switched Pole (Normalling)")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Audio Jack, 2 Poles (Mono / TS), Switched Pole (Normalling)"))
      (libsource (lib "Connector_Audio") (part "AudioJack2_Switch") (description "Audio Jack, 2 Poles (Mono / TS), Switched Pole (Normalling)"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "audio jack receptacle mono headphones phone TS connector"))
      (property (name "ki_fp_filters") (value "Jack*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "cde6d4ae-e158-43af-bace-d30b692def80"))
    (comp (ref "R1")
      (value "56k")
      (datasheet "~")
      (description "Resistor, US symbol")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Resistor, US symbol"))
      (libsource (lib "Device") (part "R_US") (description "Resistor, US symbol"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "26c5ef79-8b3b-4e5f-9f39-acde522d705e"))
    (comp (ref "R2")
      (value "56k")
      (datasheet "~")
      (description "Resistor, US symbol")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Resistor, US symbol"))
      (libsource (lib "Device") (part "R_US") (description "Resistor, US symbol"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "d241578c-83a5-4f7d-8fdc-97ebd83c25c3"))
    (comp (ref "R3")
      (value "56k")
      (datasheet "~")
      (description "Resistor, US symbol")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Resistor, US symbol"))
      (libsource (lib "Device") (part "R_US") (description "Resistor, US symbol"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "5ad8773c-5d68-4d83-8153-32441b717ce7"))
    (comp (ref "R4")
      (value "1k1")
      (datasheet "~")
      (description "Resistor, US symbol")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Resistor, US symbol"))
      (libsource (lib "Device") (part "R_US") (description "Resistor, US symbol"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "07462a38-9026-4b01-8ea1-10cacd5ef1d0"))
    (comp (ref "R6")
      (value "1k1")
      (datasheet "~")
      (description "Resistor, US symbol")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Resistor, US symbol"))
      (libsource (lib "Device") (part "R_US") (description "Resistor, US symbol"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "4b428963-6f25-473c-a607-0658f4437f06"))
    (comp (ref "R7")
      (value "1k1")
      (datasheet "~")
      (description "Resistor, US symbol")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Resistor, US symbol"))
      (libsource (lib "Device") (part "R_US") (description "Resistor, US symbol"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "18daf6ba-4933-438f-ae83-acce98491d56"))
    (comp (ref "R8")
      (value "18k")
      (datasheet "~")
      (description "Resistor, US symbol")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Resistor, US symbol"))
      (libsource (lib "Device") (part "R_US") (description "Resistor, US symbol"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "69dc0478-efd7-4b98-9315-b33b9fab144f"))
    (comp (ref "RV1")
      (value "50k")
      (datasheet "~")
      (description "Potentiometer, US symbol")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Potentiometer, US symbol"))
      (libsource (lib "Device") (part "R_Potentiometer_US") (description "Potentiometer, US symbol"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "resistor variable"))
      (property (name "ki_fp_filters") (value "Potentiometer*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "70124630-435e-4828-bd81-3366f191df97"))
    (comp (ref "U1")
      (value "LM741")
      (datasheet "http://www.ti.com/lit/ds/symlink/lm741.pdf")
      (description "Operational Amplifier, DIP-8/TO-99-8")
      (fields
        (field (name "Footprint"))
        (field (name "Datasheet") "http://www.ti.com/lit/ds/symlink/lm741.pdf")
        (field (name "Description") "Operational Amplifier, DIP-8/TO-99-8"))
      (libsource (lib "Amplifier_Operational") (part "LM741") (description "Operational Amplifier, DIP-8/TO-99-8"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_Mic PreampV2_circuit.kicad_sch"))
      (property (name "ki_keywords") (value "single opamp"))
      (property (name "ki_fp_filters") (value "SOIC*3.9x4.9mm*P1.27mm* DIP*W7.62mm* TSSOP*3x3mm*P0.65mm*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "bef4b309-8bbc-4a92-a50b-8818c4aa8af6")))
  (libparts
    (libpart (lib "Amplifier_Operational") (part "LM741")
      (description "Operational Amplifier, DIP-8/TO-99-8")
      (docs "http://www.ti.com/lit/ds/symlink/lm741.pdf")
      (footprints
        (fp "SOIC*3.9x4.9mm*P1.27mm*")
        (fp "DIP*W7.62mm*")
        (fp "TSSOP*3x3mm*P0.65mm*"))
      (fields
        (field (name "Reference") "U")
        (field (name "Value") "LM741")
        (field (name "Footprint"))
        (field (name "Datasheet") "http://www.ti.com/lit/ds/symlink/lm741.pdf")
        (field (name "Description") "Operational Amplifier, DIP-8/TO-99-8"))
      (pins
        (pin (num "1") (name "NULL") (type "input"))
        (pin (num "2") (name "-") (type "input"))
        (pin (num "3") (name "+") (type "input"))
        (pin (num "4") (name "V-") (type "power_in"))
        (pin (num "5") (name "NULL") (type "input"))
        (pin (num "6") (name "") (type "output"))
        (pin (num "7") (name "V+") (type "power_in"))
        (pin (num "8") (name "NC") (type "no_connect"))))
    (libpart (lib "Connector_Audio") (part "AudioJack2_Switch")
      (description "Audio Jack, 2 Poles (Mono / TS), Switched Pole (Normalling)")
      (docs "~")
      (footprints
        (fp "Jack*"))
      (fields
        (field (name "Reference") "J")
        (field (name "Value") "AudioJack2_Switch")
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Audio Jack, 2 Poles (Mono / TS), Switched Pole (Normalling)"))
      (pins
        (pin (num "S") (name "") (type "passive"))
        (pin (num "SN") (name "") (type "passive"))
        (pin (num "T") (name "") (type "passive"))
        (pin (num "TN") (name "") (type "passive"))))
    (libpart (lib "Device") (part "C_Polarized")
      (description "Polarized capacitor")
      (docs "~")
      (footprints
        (fp "CP_*"))
      (fields
        (field (name "Reference") "C")
        (field (name "Value") "C_Polarized")
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Polarized capacitor"))
      (pins
        (pin (num "1") (name "") (type "passive"))
        (pin (num "2") (name "") (type "passive"))))
    (libpart (lib "Device") (part "D_Schottky")
      (description "Schottky diode")
      (docs "~")
      (footprints
        (fp "TO-???*")
        (fp "*_Diode_*")
        (fp "*SingleDiode*")
        (fp "D_*"))
      (fields
        (field (name "Reference") "D")
        (field (name "Value") "D_Schottky")
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Schottky diode"))
      (pins
        (pin (num "1") (name "K") (type "passive"))
        (pin (num "2") (name "A") (type "passive"))))
    (libpart (lib "Device") (part "R_Potentiometer_US")
      (description "Potentiometer, US symbol")
      (docs "~")
      (footprints
        (fp "Potentiometer*"))
      (fields
        (field (name "Reference") "RV")
        (field (name "Value") "R_Potentiometer_US")
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Potentiometer, US symbol"))
      (pins
        (pin (num "1") (name "1") (type "passive"))
        (pin (num "2") (name "2") (type "passive"))
        (pin (num "3") (name "3") (type "passive"))))
    (libpart (lib "Device") (part "R_US")
      (description "Resistor, US symbol")
      (docs "~")
      (footprints
        (fp "R_*"))
      (fields
        (field (name "Reference") "R")
        (field (name "Value") "R_US")
        (field (name "Footprint"))
        (field (name "Datasheet") "~")
        (field (name "Description") "Resistor, US symbol"))
      (pins
        (pin (num "1") (name "") (type "passive"))
        (pin (num "2") (name "") (type "passive")))))
  (libraries
    (library (logical "Amplifier_Operational")
      (uri "C:\\Program Files\\KiCad\\9.0\\share\\kicad\\symbols\\/Amplifier_Operational.kicad_sym"))
    (library (logical "Connector_Audio")
      (uri "C:\\Program Files\\KiCad\\9.0\\share\\kicad\\symbols\\/Connector_Audio.kicad_sym"))
    (library (logical "Device")
      (uri "C:\\Program Files\\KiCad\\9.0\\share\\kicad\\symbols\\/Device.kicad_sym")))
  (nets
    (net (code "1") (name "+3.3VADC") (class "Default")
      (node (ref "D1") (pin "1") (pinfunction "K") (pintype "passive"))
      (node (ref "R8") (pin "1") (pintype "passive")))
    (net (code "2") (name "+12V") (class "Default")
      (node (ref "R1") (pin "1") (pintype "passive"))
      (node (ref "R2") (pin "1") (pintype "passive"))
      (node (ref "U1") (pin "7") (pinfunction "V+") (pintype "power_in")))
    (net (code "3") (name "GND") (class "Default")
      (node (ref "C2") (pin "2") (pintype "passive"))
      (node (ref "D2") (pin "2") (pinfunction "A") (pintype "passive"))
      (node (ref "J2") (pin "S") (pintype "passive"))
      (node (ref "R3") (pin "2") (pintype "passive"))
      (node (ref "R6") (pin "2") (pintype "passive"))
      (node (ref "R7") (pin "2") (pintype "passive"))
      (node (ref "U1") (pin "4") (pinfunction "V-") (pintype "power_in")))
    (net (code "4") (name "Net-(C1-Pad1)") (class "Default")
      (node (ref "C1") (pin "1") (pintype "passive"))
      (node (ref "J2") (pin "T") (pintype "passive"))
      (node (ref "R1") (pin "2") (pintype "passive")))
    (net (code "5") (name "Net-(C2-Pad1)") (class "Default")
      (node (ref "C2") (pin "1") (pintype "passive"))
      (node (ref "R4") (pin "2") (pintype "passive")))
    (net (code "6") (name "Net-(C3-Pad1)") (class "Default")
      (node (ref "C3") (pin "1") (pintype "passive"))
      (node (ref "R6") (pin "1") (pintype "passive"))
      (node (ref "RV1") (pin "1") (pinfunction "1") (pintype "passive"))
      (node (ref "U1") (pin "6") (pintype "output")))
    (net (code "7") (name "Net-(J2-PadSN)") (class "Default")
      (node (ref "J2") (pin "SN") (pintype "passive"))
      (node (ref "J2") (pin "TN") (pintype "passive")))
    (net (code "8") (name "Net-(U1-+)") (class "Default")
      (node (ref "C1") (pin "2") (pintype "passive"))
      (node (ref "R2") (pin "2") (pintype "passive"))
      (node (ref "R3") (pin "1") (pintype "passive"))
      (node (ref "U1") (pin "3") (pinfunction "+") (pintype "input")))
    (net (code "9") (name "Net-(U1--)") (class "Default")
      (node (ref "R4") (pin "1") (pintype "passive"))
      (node (ref "RV1") (pin "2") (pinfunction "2") (pintype "passive"))
      (node (ref "U1") (pin "2") (pinfunction "-") (pintype "input")))
    (net (code "10") (name "Vout") (class "Default")
      (node (ref "C3") (pin "2") (pintype "passive"))
      (node (ref "D1") (pin "2") (pinfunction "A") (pintype "passive"))
      (node (ref "D2") (pin "1") (pinfunction "K") (pintype "passive"))
      (node (ref "R7") (pin "1") (pintype "passive"))
      (node (ref "R8") (pin "2") (pintype "passive")))
    (net (code "11") (name "unconnected-(RV1-Pad3)") (class "Default")
      (node (ref "RV1") (pin "3") (pinfunction "3") (pintype "passive+no_connect")))
    (net (code "12") (name "unconnected-(U1-NC-Pad8)") (class "Default")
      (node (ref "U1") (pin "8") (pinfunction "NC") (pintype "no_connect")))
    (net (code "13") (name "unconnected-(U1-NULL-Pad1)") (class "Default")
      (node (ref "U1") (pin "1") (pinfunction "NULL") (pintype "input+no_connect")))
    (net (code "14") (name "unconnected-(U1-NULL-Pad5)") (class "Default")
      (node (ref "U1") (pin "5") (pinfunction "NULL") (pintype "input+no_connect")))))