<circuit version="1.1.0-RC0" rev="1909" stepSize="1000000" stepsPS="1000000" NLsteps="100000" reaStep="1000000" animate="0" >

<item itemtype="Switch" CircId="Switch-37" mainComp="false" Show_id="false" Show_Val="false" Pos="-428,-236" rotation="0" hflip="-1" vflip="1" label="Switch-37" idLabPos="-16,-24" labelrot="0" valLabPos="-16,20" valLabRot="0" Norm_Close="false" DT="false" Poles="1 _Poles" />

<item itemtype="DcMotor" CircId="DcMotor-27" mainComp="false" Show_id="true" Show_Val="false" Pos="-8,-264" rotation="90" hflip="1" vflip="-1" label="DC" idLabPos="-22,-48" labelrot="0" valLabPos="-14,36" valLabRot="0" RPM_Nominal="60 _RPM" Volt_Nominal="5 V" Resistance="100 Ω" />

<item itemtype="Ground" CircId="Ground-33" mainComp="false" Show_id="false" Show_Val="false" Pos="-120,-144" rotation="0" hflip="1" vflip="1" label="Ground-33" idLabPos="-16,8" labelrot="0" valLabPos="-16,20" valLabRot="0" />

<item itemtype="Probe" CircId="Probe-48" mainComp="false" Show_id="false" Show_Val="true" Pos="-96,-228" rotation="-45" hflip="1" vflip="1" label="Probe-48" idLabPos="16,-16" labelrot="45" valLabPos="16,0" valLabRot="45" ShowVolt="true" Threshold="2.5 V" />

<item itemtype="Probe" CircId="Probe-9" mainComp="false" Show_id="false" Show_Val="true" Pos="-308,-348" rotation="-45" hflip="1" vflip="1" label="Probe-9" idLabPos="16,-16" labelrot="45" valLabPos="16,0" valLabRot="45" ShowVolt="true" Threshold="2.5 V" />

<item itemtype="Resistor" CircId="Resistor-35" mainComp="false" ShowProp="Resistance" Show_id="false" Show_Val="true" Pos="-172,-312" rotation="0" hflip="1" vflip="1" label="Resistor-35" idLabPos="-16,-24" labelrot="0" valLabPos="-13.3883,5.56472" valLabRot="0" Resistance="1000 Ω" />

<item itemtype="opAmp" CircId="opAmp-19" mainComp="false" Show_id="false" Show_Val="false" Pos="-288,-312" rotation="0" hflip="1" vflip="1" label="opAmp-19" idLabPos="-16,-32" labelrot="0" valLabPos="-16,20" valLabRot="0" Gain="1000" Out_Imped="1e-14 Ω" Power_Pins="false" Switch_Pins="false" Volt_Pos="12 V" Volt_Neg="0 V" />

<item itemtype="Probe" CircId="Probe-22" mainComp="false" Show_id="false" Show_Val="true" Pos="-220,-328" rotation="-45" hflip="1" vflip="1" label="Probe-22" idLabPos="16,-16" labelrot="45" valLabPos="16,0" valLabRot="45" ShowVolt="true" Threshold="2.5 V" />

<item itemtype="Resistor" CircId="Resistor-5" mainComp="false" ShowProp="Resistance" Show_id="false" Show_Val="true" Pos="-336,-356" rotation="90" hflip="1" vflip="1" label="Resistor-5" idLabPos="-16,-24" labelrot="0" valLabPos="-11.6472,6.43528" valLabRot="0" Resistance="1000 Ω" />

<item itemtype="Rail" CircId="Rail-39" mainComp="false" ShowProp="Voltage" Show_id="false" Show_Val="true" Pos="-472,-236" rotation="0" hflip="1" vflip="1" label="Rail-39" idLabPos="-5,-10" labelrot="-90" valLabPos="-19.3997,3.82362" valLabRot="-90" Voltage="5 V" />

<item itemtype="Rail" CircId="Rail-32" mainComp="false" ShowProp="Voltage" Show_id="false" Show_Val="true" Pos="-120,-356" rotation="90" hflip="1" vflip="1" label="Rail-32" idLabPos="-5,-10" labelrot="-90" valLabPos="-15.0469,5.56472" valLabRot="-90" Voltage="5 V" />

<item itemtype="Resistor" CircId="Resistor-4" mainComp="false" ShowProp="Resistance" Show_id="false" Show_Val="true" Pos="-388,-300" rotation="0" hflip="1" vflip="1" label="Resistor-4" idLabPos="-16,-24" labelrot="0" valLabPos="-13.3883,5.56472" valLabRot="0" Resistance="1000 Ω" />

<item itemtype="Rail" CircId="Rail-7" mainComp="false" ShowProp="Voltage" Show_id="false" Show_Val="true" Pos="-336,-392" rotation="90" hflip="1" vflip="1" label="Rail-7" idLabPos="-5,-10" labelrot="-90" valLabPos="-15.0469,5.56472" valLabRot="-90" Voltage="5 V" />

<item itemtype="opAmp" CircId="opAmp-42" mainComp="false" Show_id="false" Show_Val="false" Pos="-56,-204" rotation="0" hflip="1" vflip="1" label="opAmp-42" idLabPos="-16,-32" labelrot="0" valLabPos="-16,20" valLabRot="0" Gain="1000" Out_Imped="1e-14 Ω" Power_Pins="false" Switch_Pins="false" Volt_Pos="12 V" Volt_Neg="0 V" />

<item itemtype="Rail" CircId="Rail-2" mainComp="false" ShowProp="Voltage" Show_id="false" Show_Val="true" Pos="-472,-300" rotation="0" hflip="1" vflip="1" label="Rail-2" idLabPos="-5,-10" labelrot="-90" valLabPos="-19.3997,3.82362" valLabRot="-90" Voltage="5 V" />

<item itemtype="Ground" CircId="Ground-29" mainComp="false" Show_id="false" Show_Val="false" Pos="-44,-300" rotation="0" hflip="1" vflip="1" label="Ground-29" idLabPos="-16,8" labelrot="0" valLabPos="-16,20" valLabRot="0" />

<item itemtype="Resistor" CircId="Resistor-40" mainComp="false" ShowProp="Resistance" Show_id="false" Show_Val="true" Pos="-120,-188" rotation="90" hflip="1" vflip="1" label="Resistor-40" idLabPos="-16,-24" labelrot="0" valLabPos="-11.6472,6.43528" valLabRot="0" Resistance="1000 Ω" />

<item itemtype="Switch" CircId="Switch-1" mainComp="false" Show_id="false" Show_Val="false" Pos="-432,-300" rotation="0" hflip="-1" vflip="1" label="Switch-1" idLabPos="-16,-24" labelrot="0" valLabPos="-16,20" valLabRot="0" Norm_Close="false" DT="false" Poles="1 _Poles" />

<item itemtype="Ground" CircId="Ground-8" mainComp="false" Show_id="false" Show_Val="false" Pos="-336,-260" rotation="0" hflip="1" vflip="1" label="Ground-8" idLabPos="-16,8" labelrot="0" valLabPos="-16,20" valLabRot="0" />

<item itemtype="Resistor" CircId="Resistor-38" mainComp="false" ShowProp="Resistance" Show_id="false" Show_Val="true" Pos="-172,-236" rotation="0" hflip="1" vflip="1" label="Resistor-38" idLabPos="-16,-24" labelrot="0" valLabPos="-13.3883,5.56472" valLabRot="0" Resistance="1000 Ω" />

<item itemtype="Probe" CircId="Probe-47" mainComp="false" Show_id="false" Show_Val="true" Pos="0,-188" rotation="-45" hflip="1" vflip="-1" label="Probe-47" idLabPos="16,-16" labelrot="45" valLabPos="16,0" valLabRot="45" ShowVolt="true" Threshold="2.5 V" />

<item itemtype="BJT" CircId="BJT-3" mainComp="false" Show_id="false" Show_Val="false" Pos="-344,-300" rotation="0" hflip="1" vflip="1" label="BJT-3" idLabPos="18,0" labelrot="0" valLabPos="-16,20" valLabRot="0" PNP="false" Gain="100" Vcrit="0.670736 V" />

<item itemtype="BJT" CircId="BJT-31" mainComp="false" Show_id="false" Show_Val="false" Pos="-128,-236" rotation="0" hflip="1" vflip="1" label="BJT-31" idLabPos="18,0" labelrot="0" valLabPos="-16,20" valLabRot="0" PNP="false" Gain="100" Vcrit="0.670736 V" />

<item itemtype="BJT" CircId="BJT-30" mainComp="false" Show_id="false" Show_Val="false" Pos="-128,-312" rotation="0" hflip="1" vflip="1" label="BJT-30" idLabPos="18,0" labelrot="0" valLabPos="-16,20" valLabRot="0" PNP="false" Gain="100" Vcrit="0.670736 V" />

<item itemtype="Probe" CircId="Probe-49" mainComp="false" Show_id="false" Show_Val="true" Pos="-104,-284" rotation="-45" hflip="1" vflip="1" label="Probe-49" idLabPos="16,-16" labelrot="45" valLabPos="16,0" valLabRot="45" ShowVolt="true" Threshold="2.5 V" />

<item itemtype="Node" CircId="Node-46" mainComp="false" Pos="-120,-212" />

<item itemtype="Node" CircId="Node-14" mainComp="false" Pos="-336,-332" />

<item itemtype="Node" CircId="Node-20" mainComp="false" Pos="-336,-320" />

<item itemtype="Node" CircId="Node-45" mainComp="false" Pos="-28,-204" />

<item itemtype="Node" CircId="Node-43" mainComp="false" Pos="-264,-312" />

<item itemtype="Connector" uid="Connector-84" startpinid="Node-45-2" endpinid="DcMotor-27-lPin" pointList="-28,-204,-8,-204,-8,-224" />

<item itemtype="Connector" uid="Connector-64" startpinid="Resistor-35-rPin" endpinid="BJT-30-base" pointList="-156,-312,-144,-312" />

<item itemtype="Connector" uid="Connector-83" startpinid="opAmp-42-output" endpinid="Node-45-0" pointList="-32,-204,-28,-204" />

<item itemtype="Connector" uid="Connector-74" startpinid="Node-43-1" endpinid="Resistor-35-lPin" pointList="-264,-312,-188,-312" />

<item itemtype="Connector" uid="Connector-62" startpinid="Switch-37-pinP0" endpinid="Resistor-38-lPin" pointList="-412,-236,-188,-236" />

<item itemtype="Connector" uid="Connector-3" startpinid="Resistor-4-rPin" endpinid="BJT-3-base" pointList="-372,-300,-360,-300" />

<item itemtype="Connector" uid="Connector-51" startpinid="Rail-2-outnod" endpinid="Switch-1-switch0pinN" pointList="-456,-300,-448,-300" />

<item itemtype="Connector" uid="Connector-8" startpinid="Rail-7-outnod" endpinid="Resistor-5-lPin" pointList="-336,-376,-336,-372" />

<item itemtype="Connector" uid="Connector-85" startpinid="opAmp-42-inputNinv" endpinid="Node-46-1" pointList="-80,-212,-120,-212" />

<item itemtype="Connector" uid="Connector-63" startpinid="Rail-39-outnod" endpinid="Switch-37-switch0pinN" pointList="-456,-236,-444,-236" />

<item itemtype="Connector" uid="Connector-67" startpinid="Resistor-40-rPin" endpinid="Ground-33-Gnd" pointList="-120,-172,-120,-160" />

<item itemtype="Connector" uid="Connector-87" startpinid="Node-46-2" endpinid="Resistor-40-lPin" pointList="-120,-212,-120,-204" />

<item itemtype="Connector" uid="Connector-42" startpinid="Node-20-1" endpinid="opAmp-19-inputNinv" pointList="-336,-320,-312,-320" />

<item itemtype="Connector" uid="Connector-20" startpinid="Node-14-1" endpinid="Probe-9-inpin" pointList="-336,-332,-324,-332" />

<item itemtype="Connector" uid="Connector-76" startpinid="Node-43-2" endpinid="opAmp-19-output" pointList="-264,-312,-264,-312" />

<item itemtype="Connector" uid="Connector-56" startpinid="Ground-29-Gnd" endpinid="DcMotor-27-rPin" pointList="-44,-316,-44,-320,-8,-320,-8,-304" />

<item itemtype="Connector" uid="Connector-52" startpinid="Switch-1-pinP0" endpinid="Resistor-4-lPin" pointList="-416,-300,-404,-300" />

<item itemtype="Connector" uid="Connector-58" startpinid="BJT-30-emiter" endpinid="BJT-31-collector" pointList="-120,-296,-120,-252" />

<item itemtype="Connector" uid="Connector-65" startpinid="Resistor-38-rPin" endpinid="BJT-31-base" pointList="-156,-236,-144,-236" />

<item itemtype="Connector" uid="Connector-21" startpinid="Resistor-5-rPin" endpinid="Node-14-0" pointList="-336,-340,-336,-332" />

<item itemtype="Connector" uid="Connector-75" startpinid="opAmp-19-inputInv" endpinid="Node-43-0" pointList="-312,-304,-312,-288,-264,-288,-264,-312" />

<item itemtype="Connector" uid="Connector-91" startpinid="Rail-32-outnod" endpinid="BJT-30-collector" pointList="-120,-340,-120,-328" />

<item itemtype="Connector" uid="Connector-34" startpinid="Node-20-2" endpinid="BJT-3-collector" pointList="-336,-320,-336,-316" />

<item itemtype="Connector" uid="Connector-33" startpinid="Node-14-2" endpinid="Node-20-0" pointList="-336,-332,-336,-320" />

<item itemtype="Connector" uid="Connector-9" startpinid="BJT-3-emiter" endpinid="Ground-8-Gnd" pointList="-336,-284,-336,-276" />

<item itemtype="Connector" uid="Connector-82" startpinid="opAmp-42-inputInv" endpinid="Node-45-1" pointList="-80,-196,-80,-176,-28,-176,-28,-204" />

<item itemtype="Connector" uid="Connector-86" startpinid="BJT-31-emiter" endpinid="Node-46-0" pointList="-120,-220,-120,-212" />

</circuit>