<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.2.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="46.025" y2="0" width="0" layer="20"/>
<wire x1="46.025" y1="0" x2="46.025" y2="33.01" width="0" layer="20"/>
<wire x1="46.025" y1="33.01" x2="0" y2="33.01" width="0" layer="20"/>
<wire x1="0" y1="33.01" x2="0" y2="0" width="0" layer="20"/>
<text>MCE </text>
<text>G Buffer </text>
<text>Ver 1.0</text>
<text>2015</text>
</plain>
<libraries>
<library name="gm-ics">
<description>&lt;b&gt;Integrated Circuits&lt;/b&gt;
&lt;ul&gt;
&lt;li&gt;mostly op amps (e.g., 4558, TL072)&lt;/li&gt;
&lt;li&gt;also CD4049 (for Anderton's Tube Sound Fuzz, the Red Llama, ...)
&lt;li&gt;generally gathered from Eagle libraries
&lt;/ul&gt;</description>
<packages>
<package name="DIL08">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="gm-supply">
<description>&lt;b&gt;Supply&lt;/b&gt;
&lt;ul&gt;
&lt;li&gt;input, output, ground, and power supply.  
&lt;li&gt;these are used on a schematic for placeholders and on a board for pads for off-board components like jacks.
&lt;/ul&gt;</description>
<packages>
<package name="SQUARE">
<description>&lt;b&gt;Square Pad&lt;/b&gt;
&lt;ul&gt;&lt;li&gt;drill diameter 0.7 mm&lt;/li&gt;&lt;/ul&gt;</description>
</package>
</packages>
</library>
<library name="gm-resistors">
<description>&lt;b&gt;Resistors&lt;/b&gt;
&lt;ul&gt;
&lt;li&gt;6mm long -- the size of 1/4 watt resistors
&lt;li&gt; all resistor values have the same size package; you choose the value of resistance 
&lt;/ul&gt;</description>
<packages>
<package name="R0207/3">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;br&gt;
&lt;br&gt;
length: 6mm&lt;br&gt;
format: 0.1" (perfboard)&lt;br&gt;
spacing: 3 holes

&lt;p&gt;This length resistor applies to 1/4 watt metal film.</description>
</package>
</packages>
</library>
<library name="gm-caps-film-box">
<description>&lt;b&gt;Capacitors, Film, Box&lt;/b&gt;
&lt;ul&gt;
&lt;li&gt;1000pF - 2.2uF  (uF = µF = mF)
&lt;li&gt;popular nonpolarized capacitors because they are small
&lt;li&gt;these have short leads so that pad spacing equals lead spacing
&lt;li&gt;e.g., WIMA capacitors
&lt;/ul&gt;</description>
<packages>
<package name="072X035">
<description>&lt;b&gt;7.2mm x 3.5mm&lt;/b&gt;
&lt;p&gt;WIMA MKP2, MKS2</description>
</package>
</packages>
</library>
<library name="gm-caps-electro-pol">
<description>&lt;b&gt;Capacitors, Polar Electrolytic, Radial &lt;/b&gt;
&lt;ul&gt;
&lt;li&gt;large value capacitors: .22 - 470uF (uF = µF = mF)
&lt;li&gt;often used in power supply filters
&lt;/ul&gt;</description>
<packages>
<package name="063_025_2">
<description>&lt;b&gt;6.3mm diameter, 2.5mm lead spacing, 0.2" pad spacing&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="gm-jacks">
<description>&lt;b&gt;Jacks&lt;/b&gt;
&lt;ul&gt;
&lt;li&gt;audio and power jacks
&lt;li&gt;off-board versions and just pads for the circuit board
&lt;/ul&gt;</description>
<packages>
<package name="NMJ4HC-S">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="TL072" library="gm-ics" package="DIL08" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="GND1" library="gm-supply" package="SQUARE" value="GND(T)">
<attribute name="NAME"/>
</element>
<element name="R1" library="gm-resistors" package="R0207/3" value="100k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R2" library="gm-resistors" package="R0207/3" value="100k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R3" library="gm-resistors" package="R0207/3" value="1M">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R4" library="gm-resistors" package="R0207/3" value="1M">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R5" library="gm-resistors" package="R0207/3" value="100k">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C1" library="gm-caps-film-box" package="072X035" value="100nF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C2" library="gm-caps-electro-pol" package="063_025_2" value="47uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C3" library="gm-caps-electro-pol" package="063_025_2" value="1uF">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="+9V1" library="gm-supply" package="SQUARE" value="+9V(T)">
<attribute name="NAME"/>
</element>
<element name="IN" library="gm-jacks" package="NMJ4HC-S" value="MONOSWS">
<attribute name="NAME"/>
</element>
<element name="OUT" library="gm-jacks" package="NMJ4HC-S" value="MONOSWS">
<attribute name="NAME"/>
</element>
<element name="+9V2" library="gm-supply" package="SQUARE" value="+9V(T)">
<attribute name="NAME"/>
</element>
</elements>
<signals>
<signal name="N$1">
<contactref element="C1" pad="2"/>
<contactref element="TL072" pad="3"/>
<contactref element="R4" pad="1"/>
</signal>
<signal name="GND">
<contactref element="TL072" pad="4"/>
<contactref element="GND1" pad="1"/>
<contactref element="R3" pad="1"/>
<contactref element="R5" pad="1"/>
<contactref element="R1" pad="1"/>
<contactref element="C2" pad="-"/>
<contactref element="IN" pad="SN"/>
<contactref element="IN" pad="S"/>
<contactref element="OUT" pad="SN"/>
<contactref element="OUT" pad="S"/>
</signal>
<signal name="N$2">
<contactref element="C3" pad="+"/>
<contactref element="TL072" pad="1"/>
<contactref element="TL072" pad="2"/>
</signal>
<signal name="+9V">
<contactref element="R2" pad="2"/>
<contactref element="+9V1" pad="1"/>
<contactref element="TL072" pad="8"/>
<contactref element="+9V2" pad="1"/>
</signal>
<signal name="N$5">
<contactref element="C2" pad="+"/>
<contactref element="R2" pad="1"/>
<contactref element="R1" pad="2"/>
<contactref element="R4" pad="2"/>
</signal>
<signal name="N$3">
<contactref element="R3" pad="2"/>
<contactref element="C1" pad="1"/>
<contactref element="IN" pad="T"/>
<contactref element="IN" pad="TN"/>
</signal>
<signal name="N$4">
<contactref element="R5" pad="2"/>
<contactref element="C3" pad="-"/>
<contactref element="OUT" pad="T"/>
<contactref element="OUT" pad="TN"/>
</signal>
<signal name="N$6">
<contactref element="TL072" pad="6"/>
<contactref element="TL072" pad="7"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
