<circuit type="simulide_1.0" rev="1007" stepSize="1000" stepsPS="1000000000" NLsteps="100000" animate="0" >

<item itemtype="opAmp" CircId="opAmp-1" mainComp="false" Show_id="false" Show_Val="false" Pos="632,588" rotation="0" hflip="1" vflip="1" label="opAmp-1" idLabPos="-16,-32" labelrot="0" valLabPos="-16,20" valLabRot="0" Gain="10000" Out_Imped="1e-14 Ω" Volt_Pos="5 V" Volt_Neg="0 V" Power_Pins="true" Switch_Pins="false" />

<item itemtype="Tunnel" CircId="Tunnel-4" mainComp="false" Show_id="false" Show_Val="false" Pos="576,580" rotation="0" hflip="1" vflip="1" label="Tunnel-4" idLabPos="-16,-24" labelrot="0" valLabPos="-16,20" valLabRot="0" Name="R" Rotated="false" />

<item itemtype="Tunnel" CircId="Tunnel-9" mainComp="false" Show_id="false" Show_Val="false" Pos="576,532" rotation="0" hflip="1" vflip="1" label="Tunnel-9" idLabPos="-16,-24" labelrot="0" valLabPos="-16,20" valLabRot="0" Name="K" Rotated="false" />

<item itemtype="Tunnel" CircId="Tunnel-11" mainComp="false" Show_id="false" Show_Val="false" Pos="576,644" rotation="0" hflip="1" vflip="1" label="Tunnel-11" idLabPos="-16,-24" labelrot="0" valLabPos="-16,20" valLabRot="0" Name="A" Rotated="false" />

<item itemtype="Battery" CircId="Battery-158" mainComp="false" ShowProp="Voltage" Show_id="false" Show_Val="true" Pos="592,620" rotation="90" hflip="1" vflip="1" label="Battery-158" idLabPos="-18,-22" labelrot="0" valLabPos="-8,32" valLabRot="-90" Voltage="2.5 V" />

<item itemtype="BJT" CircId="BJT-295" mainComp="false" Show_id="false" Show_Val="false" Pos="736,588" rotation="0" hflip="1" vflip="1" label="BJT-295" idLabPos="18,0" labelrot="0" valLabPos="-16,20" valLabRot="0" PNP="false" Gain="100" />

<item itemtype="Capacitor" CircId="Capacitor-393" mainComp="false" ShowProp="Capacitance" Show_id="false" Show_Val="true" Pos="704,616" rotation="90" hflip="1" vflip="1" label="Capacitor-488" idLabPos="-16,-24" labelrot="0" valLabPos="-14,-22" valLabRot="0" Capacitance="10 nF" />

<item itemtype="Resistor" CircId="Resistor-450" mainComp="false" ShowProp="Resistance" Show_id="false" Show_Val="true" Pos="680,588" rotation="0" hflip="1" vflip="1" label="Resistor-450" idLabPos="-16,-24" labelrot="0" valLabPos="-16,6" valLabRot="0" Resistance="50 Ω" />

<item itemtype="Package" CircId="Package-487" mainComp="false" Show_id="true" Show_Val="false" Pos="556,700" rotation="0" hflip="1" vflip="1" label="Package-487" idLabPos="0,-20" labelrot="0" valLabPos="-16,20" valLabRot="0" SubcType="None" Width="4 _Cells" Height="8 _Cells" Name="TL431" Package_File="TL431.package" Logic_Symbol="false" />

<item itemtype="Node" CircId="Node-243" mainComp="false" Pos="592,644" />

<item itemtype="Node" CircId="Node-297" mainComp="false" Pos="632,532" />

<item itemtype="Node" CircId="Node-301" mainComp="false" Pos="632,644" />

<item itemtype="Node" CircId="Node-398" mainComp="false" Pos="704,644" />

<item itemtype="Node" CircId="Node-453" mainComp="false" Pos="704,588" />

<item itemtype="Connector" uid="connector-471" startpinid="Battery-158-rPin" endpinid="Node-243-0" pointList="592,636,592,644" />

<item itemtype="Connector" uid="connector-472" startpinid="opAmp-1-inputInv" endpinid="Battery-158-lPin" pointList="608,596,592,596,592,604" />

<item itemtype="Connector" uid="connector-473" startpinid="Tunnel-11-pin" endpinid="Node-243-1" pointList="576,644,592,644" />

<item itemtype="Connector" uid="connector-474" startpinid="Tunnel-4-pin" endpinid="opAmp-1-inputNinv" pointList="576,580,608,580" />

<item itemtype="Connector" uid="connector-475" startpinid="opAmp-1-powerPos" endpinid="Node-297-0" pointList="632,572,632,532" />

<item itemtype="Connector" uid="connector-476" startpinid="Node-243-2" endpinid="Node-301-0" pointList="592,644,632,644" />

<item itemtype="Connector" uid="connector-477" startpinid="Node-297-2" endpinid="Tunnel-9-pin" pointList="632,532,576,532" />

<item itemtype="Connector" uid="connector-478" startpinid="BJT-295-emiter" endpinid="Node-398-0" pointList="744,604,744,644,704,644" />

<item itemtype="Connector" uid="connector-479" startpinid="Node-301-2" endpinid="opAmp-1-powerNeg" pointList="632,644,632,604" />

<item itemtype="Connector" uid="connector-480" startpinid="Capacitor-393-rPin" endpinid="Node-398-1" pointList="704,632,704,644" />

<item itemtype="Connector" uid="connector-481" startpinid="Node-398-2" endpinid="Node-301-1" pointList="704,644,632,644" />

<item itemtype="Connector" uid="connector-482" startpinid="Node-297-1" endpinid="BJT-295-collector" pointList="632,532,744,532,744,572" />

<item itemtype="Connector" uid="connector-483" startpinid="Capacitor-393-lPin" endpinid="Node-453-0" pointList="704,600,704,588" />

<item itemtype="Connector" uid="connector-484" startpinid="Resistor-450-lPin" endpinid="opAmp-1-output" pointList="664,588,656,588" />

<item itemtype="Connector" uid="connector-485" startpinid="Resistor-450-rPin" endpinid="Node-453-1" pointList="696,588,704,588" />

<item itemtype="Connector" uid="connector-486" startpinid="Node-453-2" endpinid="BJT-295-base" pointList="704,588,720,588" />

</circuit>