(kicad_sch
  (version 20230121)
  (generator eeschema)
  (uuid cefef67c-9974-472d-8d8c-d86312a7c6d2)
  (paper "A4")
  (title_block
    (title "Voltage Regulator")
    (company "EETree 电子森林 · CircuitJS 示例转换"))
  (lib_symbols
    (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)))))))
    (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 "Simulation_SPICE:VPULSE"
      (pin_numbers hide)
      (pin_names (offset 0.0254))
      (in_bom yes)
      (on_board yes)
      (property "Reference" "V"
        (at 2.54 2.54 0)
        (effects (font (size 1.27 1.27)) (justify left)))
      (property "Value" "VPULSE"
        (at 2.54 0 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" "https://ngspice.sourceforge.io/docs/ngspice-html-manual/manual.xhtml#sec_Independent_Sources_for"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "Sim.Pins" "1=+ 2=-"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "Sim.Type" "PULSE"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "Sim.Device" "V"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) (justify left) hide))
      (property "Sim.Params" "y1=0 y2=1 td=2n tr=2n tf=2n tw=50n per=100n"
        (at 2.54 -2.54 0)
        (effects (font (size 1.27 1.27)) (justify left)))
      (property "ki_keywords" "simulation"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_description" "Voltage source, pulse"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (symbol "VPULSE_0_0"
        (polyline
          (pts
            (xy -2.032 -0.762)
            (xy -1.397 -0.762)
            (xy -1.143 0.762)
            (xy -0.127 0.762)
            (xy 0.127 -0.762)
            (xy 1.143 -0.762)
            (xy 1.397 0.762)
            (xy 2.032 0.762))
          (stroke (width 0) (type default))
          (fill (type none)))
        (text "+"
          (at 0 1.905 0)
          (effects (font (size 1.27 1.27)))))
      (symbol "VPULSE_0_1"
        (circle
          (center 0 0)
          (radius 2.54)
          (stroke (width 0.254) (type default))
          (fill (type background))))
      (symbol "VPULSE_1_1"
        (pin passive line
          (at 0 5.08 270)
          (length 2.54)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27)))))
        (pin passive line
          (at 0 -5.08 90)
          (length 2.54)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27)))))))
    (symbol "Device:D_Zener"
      (pin_numbers hide)
      (pin_names (offset 1.016) hide)
      (in_bom yes)
      (on_board yes)
      (property "Reference" "D"
        (at 0 2.54 0)
        (effects (font (size 1.27 1.27))))
      (property "Value" "D_Zener"
        (at 0 -2.54 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" "diode"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_description" "Zener diode"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_fp_filters" "TO-???* *_Diode_* *SingleDiode* D_*"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (symbol "D_Zener_0_1"
        (polyline
          (pts (xy 1.27 0) (xy -1.27 0))
          (stroke (width 0) (type default))
          (fill (type none)))
        (polyline
          (pts
            (xy -1.27 -1.27)
            (xy -1.27 1.27)
            (xy -0.762 1.27))
          (stroke (width 0.254) (type default))
          (fill (type none)))
        (polyline
          (pts
            (xy 1.27 -1.27)
            (xy 1.27 1.27)
            (xy -1.27 0)
            (xy 1.27 -1.27))
          (stroke (width 0.254) (type default))
          (fill (type none))))
      (symbol "D_Zener_1_1"
        (pin passive line
          (at -3.81 0 0)
          (length 2.54)
          (name "K" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27)))))
        (pin passive line
          (at 3.81 0 180)
          (length 2.54)
          (name "A" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27)))))))
    (symbol "Amplifier_Operational:LM358"
      (pin_numbers hide)
      (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:Q_NPN_BCE"
      (pin_numbers hide)
      (pin_names (offset 0) hide)
      (in_bom yes)
      (on_board yes)
      (property "Reference" "Q"
        (at 5.08 1.27 0)
        (effects (font (size 1.27 1.27)) (justify left)))
      (property "Value" "Q_NPN_BCE"
        (at 5.08 -1.27 0)
        (effects (font (size 1.27 1.27)) (justify left)))
      (property "Footprint" ""
        (at 5.08 2.54 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" "transistor NPN"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_description" "NPN transistor, base/collector/emitter"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (symbol "Q_NPN_BCE_0_1"
        (polyline
          (pts (xy 0.635 0.635) (xy 2.54 2.54))
          (stroke (width 0) (type default))
          (fill (type none)))
        (polyline
          (pts
            (xy 0.635 -0.635)
            (xy 2.54 -2.54)
            (xy 2.54 -2.54))
          (stroke (width 0) (type default))
          (fill (type none)))
        (polyline
          (pts
            (xy 0.635 1.905)
            (xy 0.635 -1.905)
            (xy 0.635 -1.905))
          (stroke (width 0.508) (type default))
          (fill (type none)))
        (polyline
          (pts
            (xy 1.27 -1.778)
            (xy 1.778 -1.27)
            (xy 2.286 -2.286)
            (xy 1.27 -1.778)
            (xy 1.27 -1.778))
          (stroke (width 0) (type default))
          (fill (type outline)))
        (circle
          (center 1.27 0)
          (radius 2.8194)
          (stroke (width 0.254) (type default))
          (fill (type none))))
      (symbol "Q_NPN_BCE_1_1"
        (pin input line
          (at -5.08 0 0)
          (length 5.715)
          (name "B" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27)))))
        (pin passive line
          (at 2.54 5.08 270)
          (length 2.54)
          (name "C" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27)))))
        (pin passive line
          (at 2.54 -5.08 90)
          (length 2.54)
          (name "E" (effects (font (size 1.27 1.27))))
          (number "3" (effects (font (size 1.27 1.27)))))))
    (symbol "Device:R_Potentiometer"
      (pin_numbers hide)
      (pin_names (offset 1.016) hide)
      (in_bom yes)
      (on_board yes)
      (property "Reference" "RV"
        (at -4.445 0 90)
        (effects (font (size 1.27 1.27))))
      (property "Value" "R_Potentiometer"
        (at -2.54 0 90)
        (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" "resistor variable"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_description" "Potentiometer"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_fp_filters" "Potentiometer*"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (symbol "R_Potentiometer_0_1"
        (polyline
          (pts (xy 2.54 0) (xy 1.524 0))
          (stroke (width 0) (type default))
          (fill (type none)))
        (polyline
          (pts
            (xy 1.143 0)
            (xy 2.286 0.508)
            (xy 2.286 -0.508)
            (xy 1.143 0))
          (stroke (width 0) (type default))
          (fill (type outline)))
        (rectangle
          (start 1.016 2.54)
          (end -1.016 -2.54)
          (stroke (width 0.254) (type default))
          (fill (type none))))
      (symbol "R_Potentiometer_1_1"
        (pin passive line
          (at 0 3.81 270)
          (length 1.27)
          (name "1" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27)))))
        (pin passive line
          (at 3.81 0 180)
          (length 1.27)
          (name "2" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27)))))
        (pin passive line
          (at 0 -3.81 90)
          (length 1.27)
          (name "3" (effects (font (size 1.27 1.27))))
          (number "3" (effects (font (size 1.27 1.27)))))))
    (symbol "Simulation_SPICE:VPWL"
      (pin_numbers hide)
      (pin_names (offset 0.0254))
      (in_bom yes)
      (on_board yes)
      (property "Reference" "V"
        (at 2.54 2.54 0)
        (effects (font (size 1.27 1.27)) (justify left)))
      (property "Value" "VPWL"
        (at 2.54 0 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" "https://ngspice.sourceforge.io/docs/ngspice-html-manual/manual.xhtml#sec_Independent_Sources_for"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "Sim.Pins" "1=+ 2=-"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "Sim.Device" "V"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) (justify left) hide))
      (property "Sim.Params" "pwl=\"0 -1 50n -1 51n 0 97n 1 171n -1 200n -1\""
        (at 2.54 -2.54 0)
        (effects (font (size 1.27 1.27)) (justify left)))
      (property "Sim.Type" "PWL"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_keywords" "simulation"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (property "ki_description" "Voltage source, piece-wise linear"
        (at 0 0 0)
        (effects (font (size 1.27 1.27)) hide))
      (symbol "VPWL_0_0"
        (polyline
          (pts
            (xy -1.778 -1.016)
            (xy -0.762 1.016)
            (xy -0.254 0)
            (xy 0.762 0)
            (xy 1.27 1.27))
          (stroke (width 0) (type default))
          (fill (type none)))
        (text "+"
          (at 0 1.905 0)
          (effects (font (size 1.27 1.27)))))
      (symbol "VPWL_0_1"
        (circle
          (center 0 0)
          (radius 2.54)
          (stroke (width 0.254) (type default))
          (fill (type background))))
      (symbol "VPWL_1_1"
        (pin passive line
          (at 0 5.08 270)
          (length 2.54)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "1" (effects (font (size 1.27 1.27)))))
        (pin passive line
          (at 0 -5.08 90)
          (length 2.54)
          (name "~" (effects (font (size 1.27 1.27))))
          (number "2" (effects (font (size 1.27 1.27))))))))
  (junction
    (at 50.8 38.1)
    (diameter 0)
    (color 0 0 0 0)
    (uuid 47182185-a64f-4212-a5c1-24c427398489))
  (junction
    (at 50.8 30.48)
    (diameter 0)
    (color 0 0 0 0)
    (uuid fbe3ddc1-f510-4699-9341-91e589f6c5ac))
  (junction
    (at 86.36 30.48)
    (diameter 0)
    (color 0 0 0 0)
    (uuid 9454a5ff-4df0-439a-a537-2448941a35ff))
  (junction
    (at 86.36 48.26)
    (diameter 0)
    (color 0 0 0 0)
    (uuid 990f7752-fa39-4b18-a877-5ae7c39f2e9c))
  (wire
    (pts (xy 58.42 38.1) (xy 50.8 38.1))
    (stroke (width 0) (type default))
    (uuid d04b0e3a-9fa3-48dd-85af-166e3c8437cc))
  (wire
    (pts (xy 50.8 30.48) (xy 71.12 30.48))
    (stroke (width 0) (type default))
    (uuid 460a1cf5-8172-4db1-b51b-925f4d7c191a))
  (wire
    (pts (xy 73.66 35.56) (xy 73.66 40.64))
    (stroke (width 0) (type default))
    (uuid 05c96c6c-8e0f-489e-87cc-b3f705ee29b4))
  (wire
    (pts (xy 76.2 30.48) (xy 86.36 30.48))
    (stroke (width 0) (type default))
    (uuid 3745997c-0962-4e87-9e69-3e7df228cce1))
  (wire
    (pts (xy 58.42 43.18) (xy 58.42 48.26))
    (stroke (width 0) (type default))
    (uuid 73a5537d-d870-485d-92cc-864027f9b614))
  (wire
    (pts (xy 58.42 48.26) (xy 86.36 48.26))
    (stroke (width 0) (type default))
    (uuid 166be67d-b4ca-49b6-913c-6f677c43af26))
  (wire
    (pts (xy 86.36 30.48) (xy 106.68 30.48))
    (stroke (width 0) (type default))
    (uuid 9e2b64c4-3cd1-4a97-af71-83994da37181))
  (wire
    (pts (xy 109.22 43.18) (xy 109.22 48.26))
    (stroke (width 0) (type default))
    (uuid 8db2f856-ef3e-45b9-aa52-3ab1494a1ba0))
  (wire
    (pts (xy 86.36 35.56) (xy 86.36 30.48))
    (stroke (width 0) (type default))
    (uuid 212d1184-1b9a-4f09-b9ac-2ec8e213746a))
  (wire
    (pts (xy 86.36 43.18) (xy 86.36 48.26))
    (stroke (width 0) (type default))
    (uuid 18b71839-9ac7-485a-83c5-0097cdf86dd3))
  (wire
    (pts (xy 86.36 49.53) (xy 86.36 48.26))
    (stroke (width 0) (type default))
    (uuid 7b973f76-f8a0-4fdd-91d8-1e31bc9163ea))
  (wire
    (pts (xy 86.36 57.15) (xy 86.36 58.42))
    (stroke (width 0) (type default))
    (uuid 51016b5b-f9d6-41e1-b0a7-c5252ae42d20))
  (wire
    (pts (xy 50.8 46.99) (xy 50.8 48.26))
    (stroke (width 0) (type default))
    (uuid bfd96963-12d8-4a7d-a465-07e2c7af0035))
  (wire
    (pts (xy 50.8 39.37) (xy 50.8 38.1))
    (stroke (width 0) (type default))
    (uuid 05fdf73d-0e6a-4a7c-b863-a8f6aef1e60e))
  (wire
    (pts (xy 38.1 30.48) (xy 33.02 30.48))
    (stroke (width 0) (type default))
    (uuid 2f894ddd-f7a9-43b7-88ee-e946396c7177))
  (wire
    (pts (xy 45.72 30.48) (xy 50.8 30.48))
    (stroke (width 0) (type default))
    (uuid 8adb1631-4632-4663-95be-34d523f33c1b))
  (wire
    (pts (xy 73.66 38.1) (xy 73.66 35.56))
    (stroke (width 0) (type default))
    (uuid 94733dc5-d317-43b8-b8d7-a6c80b1ffa25))
  (wire
    (pts (xy 68.58 30.48) (xy 71.12 30.48))
    (stroke (width 0) (type default))
    (uuid c0e60574-d20c-431a-aa86-44f97ddd5cd4))
  (wire
    (pts (xy 78.74 30.48) (xy 76.2 30.48))
    (stroke (width 0) (type default))
    (uuid 1850c6f7-e7ea-405b-ab19-7e4dcff192d4))
  (wire
    (pts (xy 105.41 30.48) (xy 106.68 30.48))
    (stroke (width 0) (type default))
    (uuid 8d0b3910-634f-4840-8480-9635e0222740))
  (wire
    (pts (xy 113.03 30.48) (xy 111.76 30.48))
    (stroke (width 0) (type default))
    (uuid fc19103f-549b-43e4-a2b6-43371e51198c))
  (wire
    (pts (xy 109.22 34.29) (xy 109.22 33.02))
    (stroke (width 0) (type default))
    (uuid fdf2f19d-81a8-442f-8d4b-bc0119d69246))
  (text "Simulated load"
    (at 100.0125 55.72125 0)
    (effects (font (size 1.77 1.77)) (justify left bottom))
    (uuid 119f8553-1009-4f86-87de-a30c3974c35b))
  (text "Variable Current"
    (at 102.71125 57.785 0)
    (effects (font (size 1.18 1.18)) (justify left bottom))
    (uuid abd9b2a7-a230-46cc-97b0-5ae42aad4dd3))
  (text "Stable Voltage"
    (at 89.535 27.6225 0)
    (effects (font (size 1.18 1.18)) (justify left bottom))
    (uuid cee03e46-01fe-4920-b19a-e6ca486364c5))
  (text "Variable V/I"
    (at 26.67 51.7525 0)
    (effects (font (size 1.77 1.77)) (justify left bottom))
    (uuid 3970a905-e277-4521-b0e8-e6da2d3ca255))
  (symbol
    (lib_id "power:GND")
    (at 50.8 48.26 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 0657c252-02b3-4a54-84ee-55f6c2db1e0e)
    (property "Reference" "#PWR001"
      (at 50.8 48.26 0)
      (effects (font (size 1.27 1.27)) hide))
    (property "Value" "GND"
      (at 50.8 48.26 0)
      (effects (font (size 1.27 1.27)) hide))
    (property "Footprint" ""
      (at 50.8 48.26 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid cef8f410-7efb-4d4c-85f3-c718dfd1f513))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "#PWR001")
          (unit 1)))))
  (symbol
    (lib_id "power:GND")
    (at 86.36 58.42 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 4c45edc5-c5be-4cba-a5fa-c8b139391106)
    (property "Reference" "#PWR002"
      (at 86.36 58.42 0)
      (effects (font (size 1.27 1.27)) hide))
    (property "Value" "GND"
      (at 86.36 58.42 0)
      (effects (font (size 1.27 1.27)) hide))
    (property "Footprint" ""
      (at 86.36 58.42 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid cb5d852d-1cd0-4a31-8d2c-7c14c6dec944))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "#PWR002")
          (unit 1)))))
  (symbol
    (lib_id "power:GND")
    (at 109.22 48.26 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 42f4393a-e387-4f9b-b58f-3a796e3228f1)
    (property "Reference" "#PWR003"
      (at 109.22 48.26 0)
      (effects (font (size 1.27 1.27)) hide))
    (property "Value" "GND"
      (at 109.22 48.26 0)
      (effects (font (size 1.27 1.27)) hide))
    (property "Footprint" ""
      (at 109.22 48.26 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid aa25ba86-7054-4f5d-a895-1a554bf70348))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "#PWR003")
          (unit 1)))))
  (symbol
    (lib_id "Device:R")
    (at 50.8 34.29 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 52d1e11f-c94f-4de2-bef1-cb15ea31ba6b)
    (property "Reference" "R1"
      (at 55.08625 33.49625 0)
      (effects (font (size 1.27 1.27))))
    (property "Value" "10kΩ"
      (at 55.08625 35.08375 0)
      (effects (font (size 1.27 1.27))))
    (property "Footprint" ""
      (at 50.8 34.29 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 3201b838-eada-4eb4-8a6f-7f2ebd28fc2f))
    (pin "2" (uuid 9c5ff1d3-f907-4333-bdd2-24a95070db87))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "R1")
          (unit 1)))))
  (symbol
    (lib_id "Device:R")
    (at 86.36 39.37 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid e56e00d3-93bf-4d8d-8b9a-a945e0731913)
    (property "Reference" "R2"
      (at 90.64625 38.57625 0)
      (effects (font (size 1.27 1.27))))
    (property "Value" "470Ω"
      (at 90.64625 40.16375 0)
      (effects (font (size 1.27 1.27))))
    (property "Footprint" ""
      (at 86.36 39.37 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 21f3818c-44dc-40f3-8658-eeb44fd9b4fe))
    (pin "2" (uuid 680b38a6-ea8b-4805-8fd9-2d6794b2ab4a))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "R2")
          (unit 1)))))
  (symbol
    (lib_id "Device:R")
    (at 86.36 53.34 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 0ae91441-3011-4ce9-ab9d-096ca0ac9afb)
    (property "Reference" "R3"
      (at 90.64625 52.54625 0)
      (effects (font (size 1.27 1.27))))
    (property "Value" "470Ω"
      (at 90.64625 54.13375 0)
      (effects (font (size 1.27 1.27))))
    (property "Footprint" ""
      (at 86.36 53.34 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid bfe25557-7f67-46c9-9ba9-585e858295d0))
    (pin "2" (uuid b2391dfd-7188-4d23-91d9-84d3d81d9282))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "R3")
          (unit 1)))))
  (symbol
    (lib_id "Simulation_SPICE:VPULSE")
    (at 109.22 38.1 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 2ee721ef-9bb6-4798-9ab4-12f3ad2dab37)
    (property "Reference" "V1"
      (at 116.68125 37.30625 0)
      (effects (font (size 1.27 1.27))))
    (property "Value" "6V 60Hz"
      (at 116.68125 38.89375 0)
      (effects (font (size 1.27 1.27))))
    (property "Footprint" ""
      (at 109.22 38.1 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid ebdc6764-8f42-4604-90fe-b7dbfac05ce9))
    (pin "2" (uuid b76c2a3e-6653-41db-85e7-9dac0ee4989a))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "V1")
          (unit 1)))))
  (symbol
    (lib_id "Device:D_Zener")
    (at 50.8 43.18 270)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 2b7071ca-00ff-446e-9f0b-5cdfca49a1c0)
    (property "Reference" "D1"
      (at 45.72 42.38625 90)
      (effects (font (size 1.27 1.27))))
    (property "Value" "6.14V"
      (at 45.72 43.97375 90)
      (effects (font (size 1.27 1.27))))
    (property "Footprint" ""
      (at 50.8 43.18 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 60667c35-d093-4cc0-9127-44f8af433f38))
    (pin "2" (uuid e603c44b-1d0b-4f83-8f4d-aaca89e404cc))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "D1")
          (unit 1)))))
  (symbol
    (lib_id "Device:R")
    (at 41.91 30.48 90)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 308523b8-f9f5-4883-b9aa-3301ed8f4ba5)
    (property "Reference" "R4"
      (at 41.91 26.3525 90)
      (effects (font (size 1.27 1.27))))
    (property "Value" "100Ω"
      (at 41.91 27.94 90)
      (effects (font (size 1.27 1.27))))
    (property "Footprint" ""
      (at 41.91 30.48 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 2245d7a9-1636-4b38-a774-5043d60d8847))
    (pin "2" (uuid bdf92253-d758-4cb5-9e61-081faea37177))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "R4")
          (unit 1)))))
  (symbol
    (lib_id "Amplifier_Operational:LM358")
    (at 66.04 40.64 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid c0eeb701-6b46-4c4c-bcaf-a6531bdc7bde)
    (property "Reference" "U1"
      (at 66.04 33.9725 0)
      (effects (font (size 1.27 1.27))))
    (property "Value" "OpAmp"
      (at 66.04 40.64 0)
      (effects (font (size 1.27 1.27)) hide))
    (property "Footprint" ""
      (at 66.04 40.64 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 0b7b8e63-f1b6-40fd-aa3c-a021cd046f45))
    (pin "2" (uuid 38614e79-f533-4aaf-b052-aa69f34cbdcf))
    (pin "3" (uuid 87d144c6-88d7-4b7f-b0c0-3c9c0450bf6a))
    (pin "5" (uuid c04f2b52-3497-4bdb-89c2-5f44bae62e7a))
    (pin "6" (uuid 877f205e-e973-4f04-a780-ce158d9d5978))
    (pin "7" (uuid 3dac6277-6475-4303-9a2a-ad463d0130c1))
    (pin "4" (uuid 228227a7-0003-4b9a-ac5a-46a4029804e5))
    (pin "8" (uuid 4b9b1afa-b5af-4456-8123-cf65832746e3))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "U1")
          (unit 1)))))
  (symbol
    (lib_id "Device:Q_NPN_BCE")
    (at 73.66 33.02 90)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid b88f5dd7-8058-4e2c-9979-bdd9fef903bf)
    (property "Reference" "Q1"
      (at 73.66 27.305 90)
      (effects (font (size 1.27 1.27))))
    (property "Value" ""
      (at 73.66 33.02 90)
      (effects (font (size 1.27 1.27)) hide))
    (property "Footprint" ""
      (at 73.66 33.02 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid edc1fe28-fc51-4293-9d88-cf19ae22b8b6))
    (pin "2" (uuid 8240f5e2-c899-4784-a68c-03b4cf4f2c3e))
    (pin "3" (uuid 2f398351-9a9d-45fb-a260-79e583feb1ba))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "Q1")
          (unit 1)))))
  (symbol
    (lib_id "Device:R_Potentiometer")
    (at 109.22 30.48 90)
    (mirror x)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 02f2e28c-69fa-4a00-a166-da8ae9c3e4c9)
    (property "Reference" "RV1"
      (at 109.22 26.3525 90)
      (effects (font (size 1.27 1.27))))
    (property "Value" "1kΩ"
      (at 109.22 27.94 90)
      (effects (font (size 1.27 1.27))))
    (property "Footprint" ""
      (at 109.22 30.48 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 13753489-f534-4c67-b93b-8d6af2222841))
    (pin "2" (uuid 7554ffa7-c495-4928-a431-4739eb2105e8))
    (pin "3" (uuid 2292ca14-fb55-4d9b-97e1-7e986e8bf00b))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "RV1")
          (unit 1)))))
  (symbol
    (lib_id "Simulation_SPICE:VPWL")
    (at 33.02 35.56 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid fd7df597-97ef-462f-9d56-1ab552f19099)
    (property "Reference" "V2"
      (at 41.11625 34.76625 0)
      (effects (font (size 1.27 1.27))))
    (property "Value" "2V 120Hz"
      (at 41.11625 36.35375 0)
      (effects (font (size 1.27 1.27))))
    (property "Footprint" ""
      (at 33.02 35.56 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 192eb227-ff07-4db2-9fb5-5b9fe82038cb))
    (pin "2" (uuid 4b4979ad-4ad9-4ede-b963-328756ba899e))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "V2")
          (unit 1)))))
  (symbol
    (lib_id "power:GND")
    (at 33.02 40.64 0)
    (unit 1)
    (in_bom yes)
    (on_board yes)
    (dnp no)
    (uuid 685cc665-b6f2-47f8-98c6-1d9c8c93b68b)
    (property "Reference" "#PWR004"
      (at 33.02 40.64 0)
      (effects (font (size 1.27 1.27)) hide))
    (property "Value" "GND"
      (at 33.02 40.64 0)
      (effects (font (size 1.27 1.27)) hide))
    (property "Footprint" ""
      (at 33.02 40.64 0)
      (effects (font (size 1.27 1.27)) hide))
    (pin "1" (uuid 8d231226-1645-4ff0-a241-157e7563eecf))
    (instances
      (project "opamp-regulator"
        (path "/d3bb0f47-9c03-449f-8319-489b786ba985"
          (reference "#PWR004")
          (unit 1)))))
  (sheet_instances (path "/" (page "1"))))