(export (version "E")
  (design
    (source "C:\\Users\\gayli\\Documents\\Work\\SnorkelAI\\Ohm Bench\\kicad_InstrumentationAmp_circuit_modified\\kicad_InstrumentationAmp_circuit_modified.kicad_sch")
    (date "2026-03-01T20:14:56-1000")
    (tool "Eeschema 9.0.7")
    (sheet (number "1") (name "/") (tstamps "/")
      (title_block
        (title)
        (company)
        (rev)
        (date)
        (source "kicad_InstrumentationAmp_circuit_modified.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 "R1")
      (value "10k")
      (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_InstrumentationAmp_circuit_modified.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "485d55d8-740e-48bb-93a0-cd0bece0aa14"))
    (comp (ref "R2")
      (value "10k")
      (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_InstrumentationAmp_circuit_modified.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "6090e560-c06c-41c5-986c-260c345770f3"))
    (comp (ref "R3")
      (value "10k")
      (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_InstrumentationAmp_circuit_modified.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "d063afd1-1833-46ca-aef5-534d53e9cbb5"))
    (comp (ref "R4")
      (value "10k")
      (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_InstrumentationAmp_circuit_modified.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "1c492f50-932f-463a-a8a1-b251683f73b1"))
    (comp (ref "R5")
      (value "10k")
      (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_InstrumentationAmp_circuit_modified.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "e1417b82-4067-4767-85af-ad3eb3cf4ee6"))
    (comp (ref "R6")
      (value "10k")
      (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_InstrumentationAmp_circuit_modified.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "752af825-701a-4253-a56b-eb965aff1b55"))
    (comp (ref "R10")
      (value "2.80k")
      (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_InstrumentationAmp_circuit_modified.kicad_sch"))
      (property (name "ki_keywords") (value "R res resistor"))
      (property (name "ki_fp_filters") (value "R_*"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "dd6c55c8-51b3-40db-8e0b-cba27665fee1"))
    (comp (ref "U1")
      (value "~")
      (datasheet "https://ngspice.sourceforge.io/docs/ngspice-html-manual/manual.xhtml#sec__SUBCKT_Subcircuits")
      (description "Operational amplifier, single")
      (fields
        (field (name "Sim.Pins") "1=in+ 2=in- 3=vcc 4=vee 5=out")
        (field (name "Sim.Device") "SUBCKT")
        (field (name "Sim.Library") "${KICAD9_SYMBOL_DIR}/Simulation_SPICE.sp")
        (field (name "Sim.Name") "kicad_builtin_opamp")
        (field (name "Footprint"))
        (field (name "Datasheet") "https://ngspice.sourceforge.io/docs/ngspice-html-manual/manual.xhtml#sec__SUBCKT_Subcircuits")
        (field (name "Description") "Operational amplifier, single"))
      (libsource (lib "Simulation_SPICE") (part "OPAMP") (description "Operational amplifier, single"))
      (property (name "Sim.Pins") (value "1=in+ 2=in- 3=vcc 4=vee 5=out"))
      (property (name "Sim.Device") (value "SUBCKT"))
      (property (name "Sim.Library") (value "${KICAD9_SYMBOL_DIR}/Simulation_SPICE.sp"))
      (property (name "Sim.Name") (value "kicad_builtin_opamp"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_InstrumentationAmp_circuit_modified.kicad_sch"))
      (property (name "ki_keywords") (value "simulation"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "5d213eb8-39b4-43f8-80e1-157097510af9"))
    (comp (ref "U2")
      (value "~")
      (datasheet "https://ngspice.sourceforge.io/docs/ngspice-html-manual/manual.xhtml#sec__SUBCKT_Subcircuits")
      (description "Operational amplifier, single")
      (fields
        (field (name "Sim.Pins") "1=in+ 2=in- 3=vcc 4=vee 5=out")
        (field (name "Sim.Device") "SUBCKT")
        (field (name "Sim.Library") "${KICAD9_SYMBOL_DIR}/Simulation_SPICE.sp")
        (field (name "Sim.Name") "kicad_builtin_opamp")
        (field (name "Footprint"))
        (field (name "Datasheet") "https://ngspice.sourceforge.io/docs/ngspice-html-manual/manual.xhtml#sec__SUBCKT_Subcircuits")
        (field (name "Description") "Operational amplifier, single"))
      (libsource (lib "Simulation_SPICE") (part "OPAMP") (description "Operational amplifier, single"))
      (property (name "Sim.Pins") (value "1=in+ 2=in- 3=vcc 4=vee 5=out"))
      (property (name "Sim.Device") (value "SUBCKT"))
      (property (name "Sim.Library") (value "${KICAD9_SYMBOL_DIR}/Simulation_SPICE.sp"))
      (property (name "Sim.Name") (value "kicad_builtin_opamp"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_InstrumentationAmp_circuit_modified.kicad_sch"))
      (property (name "ki_keywords") (value "simulation"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "5ddd324a-93ce-4c73-936b-7766774e475a"))
    (comp (ref "U3")
      (value "~")
      (datasheet "https://ngspice.sourceforge.io/docs/ngspice-html-manual/manual.xhtml#sec__SUBCKT_Subcircuits")
      (description "Operational amplifier, single")
      (fields
        (field (name "Sim.Pins") "1=in+ 2=in- 3=vcc 4=vee 5=out")
        (field (name "Sim.Device") "SUBCKT")
        (field (name "Sim.Library") "${KICAD9_SYMBOL_DIR}/Simulation_SPICE.sp")
        (field (name "Sim.Name") "kicad_builtin_opamp")
        (field (name "Footprint"))
        (field (name "Datasheet") "https://ngspice.sourceforge.io/docs/ngspice-html-manual/manual.xhtml#sec__SUBCKT_Subcircuits")
        (field (name "Description") "Operational amplifier, single"))
      (libsource (lib "Simulation_SPICE") (part "OPAMP") (description "Operational amplifier, single"))
      (property (name "Sim.Pins") (value "1=in+ 2=in- 3=vcc 4=vee 5=out"))
      (property (name "Sim.Device") (value "SUBCKT"))
      (property (name "Sim.Library") (value "${KICAD9_SYMBOL_DIR}/Simulation_SPICE.sp"))
      (property (name "Sim.Name") (value "kicad_builtin_opamp"))
      (property (name "Sheetname") (value "Root"))
      (property (name "Sheetfile") (value "kicad_InstrumentationAmp_circuit_modified.kicad_sch"))
      (property (name "ki_keywords") (value "simulation"))
      (sheetpath (names "/") (tstamps "/"))
      (tstamps "876a07ad-980c-400a-a06e-76e02a005e33")))
  (libparts
    (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"))))
    (libpart (lib "Simulation_SPICE") (part "OPAMP")
      (description "Operational amplifier, single")
      (docs "https://ngspice.sourceforge.io/docs/ngspice-html-manual/manual.xhtml#sec__SUBCKT_Subcircuits")
      (fields
        (field (name "Reference") "U")
        (field (name "Value") "${SIM.PARAMS}")
        (field (name "Footprint"))
        (field (name "Datasheet") "https://ngspice.sourceforge.io/docs/ngspice-html-manual/manual.xhtml#sec__SUBCKT_Subcircuits")
        (field (name "Description") "Operational amplifier, single")
        (field (name "Sim.Pins") "1=in+ 2=in- 3=vcc 4=vee 5=out")
        (field (name "Sim.Device") "SUBCKT")
        (field (name "Sim.Library") "${KICAD9_SYMBOL_DIR}/Simulation_SPICE.sp")
        (field (name "Sim.Name") "kicad_builtin_opamp"))
      (pins
        (pin (num "1") (name "+") (type "input"))
        (pin (num "2") (name "-") (type "input"))
        (pin (num "3") (name "V+") (type "power_in"))
        (pin (num "4") (name "V-") (type "power_in"))
        (pin (num "5") (name "") (type "output")))))
  (libraries
    (library (logical "Device")
      (uri "C:\\Program Files\\KiCad\\9.0\\share\\kicad\\symbols\\/Device.kicad_sym"))
    (library (logical "Simulation_SPICE")
      (uri "C:\\Program Files\\KiCad\\9.0\\share\\kicad\\symbols\\/Simulation_SPICE.kicad_sym")))
  (nets
    (net (code "1") (name "+15V") (class "Default")
      (node (ref "U1") (pin "3") (pinfunction "V+") (pintype "power_in"))
      (node (ref "U2") (pin "3") (pinfunction "V+") (pintype "power_in"))
      (node (ref "U3") (pin "3") (pinfunction "V+") (pintype "power_in")))
    (net (code "2") (name "-15V") (class "Default")
      (node (ref "U1") (pin "4") (pinfunction "V-") (pintype "power_in"))
      (node (ref "U2") (pin "4") (pinfunction "V-") (pintype "power_in"))
      (node (ref "U3") (pin "4") (pinfunction "V-") (pintype "power_in")))
    (net (code "3") (name "GND") (class "Default")
      (node (ref "R4") (pin "2") (pintype "passive")))
    (net (code "4") (name "IN_M") (class "Default")
      (node (ref "U1") (pin "1") (pinfunction "+") (pintype "input")))
    (net (code "5") (name "IN_P") (class "Default")
      (node (ref "U2") (pin "1") (pinfunction "+") (pintype "input")))
    (net (code "6") (name "Net-(R1-Pad1)") (class "Default")
      (node (ref "R1") (pin "1") (pintype "passive"))
      (node (ref "R6") (pin "2") (pintype "passive"))
      (node (ref "U1") (pin "5") (pintype "output")))
    (net (code "7") (name "Net-(R3-Pad1)") (class "Default")
      (node (ref "R3") (pin "1") (pintype "passive"))
      (node (ref "R5") (pin "2") (pintype "passive"))
      (node (ref "U2") (pin "5") (pintype "output")))
    (net (code "8") (name "Net-(U1--)") (class "Default")
      (node (ref "R10") (pin "2") (pintype "passive"))
      (node (ref "R6") (pin "1") (pintype "passive"))
      (node (ref "U1") (pin "2") (pinfunction "-") (pintype "input")))
    (net (code "9") (name "Net-(U2--)") (class "Default")
      (node (ref "R10") (pin "1") (pintype "passive"))
      (node (ref "R5") (pin "1") (pintype "passive"))
      (node (ref "U2") (pin "2") (pinfunction "-") (pintype "input")))
    (net (code "10") (name "Net-(U3-+)") (class "Default")
      (node (ref "R3") (pin "2") (pintype "passive"))
      (node (ref "R4") (pin "1") (pintype "passive"))
      (node (ref "U3") (pin "1") (pinfunction "+") (pintype "input")))
    (net (code "11") (name "Net-(U3--)") (class "Default")
      (node (ref "R1") (pin "2") (pintype "passive"))
      (node (ref "R2") (pin "1") (pintype "passive"))
      (node (ref "U3") (pin "2") (pinfunction "-") (pintype "input")))
    (net (code "12") (name "OUTPUT") (class "Default")
      (node (ref "R2") (pin "2") (pintype "passive"))
      (node (ref "U3") (pin "5") (pintype "output")))))