<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.5.0">
<drawing>
<board>
<plain>
<wire x1="0.1016" y1="0.1016" x2="29.9468" y2="0.1016" width="0" layer="20"/>
<wire x1="29.9468" y1="0.1016" x2="29.9468" y2="39.4616" width="0" layer="20"/>
<wire x1="29.9468" y1="39.4616" x2="0.1016" y2="39.4616" width="0" layer="20"/>
<wire x1="0.1016" y1="39.4616" x2="0.1016" y2="0.1016" width="0" layer="20"/>
<text>Buffer Preamp Supreme v1.0</text>
<text>CMU ArtFab 2014</text>
</plain>
<libraries>
<library name="transistor-fet">
<description>&lt;b&gt;Field Effect Transistors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;&lt;p&gt;
&lt;p&gt;
Symbols changed according to IEC617&lt;p&gt; 
All types, packages and assignment to symbols and pins checked&lt;p&gt;
Package outlines partly checked&lt;p&gt;
&lt;p&gt;
JFET = junction FET&lt;p&gt;
IGBT-x = insulated gate bipolar transistor&lt;p&gt;
x=N: NPN; x=P: PNP&lt;p&gt;
IGFET-mc-nnn; (IGFET=insulated gate field effect transistor)&lt;P&gt;
m=D: depletion mode (Verdr&amp;auml;ngungstyp)&lt;p&gt;
m=E: enhancement mode (Anreicherungstyp)&lt;p&gt;
c: N=N-channel; P=P-Channel&lt;p&gt;
GDSB: gate, drain, source, bulk&lt;p&gt;
&lt;p&gt;
by R. Vogg  15.March.2002</description>
<packages>
<package name="TO92">
<description>&lt;b&gt;TO 92&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Passives">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find resistors, capacitors, inductors, test points, jumper pads, etc.&lt;br&gt;&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is the end user's responsibility to ensure correctness and suitablity for a given componet or application. If you enjoy using this library, please buy one of our products at www.sparkfun.com.
&lt;br&gt;&lt;br&gt;
&lt;b&gt;Licensing:&lt;/b&gt; CC v3.0 Share-Alike You are welcome to use this library for commercial purposes. For attribution, we ask that when you begin to sell your device using our footprint, you email us with a link to the product being sold. We want bragging rights that we helped (in a very small part) to create your 8th world wonder. We would like the opportunity to feature your device on our homepage.</description>
<packages>
<package name="CPOL-RADIAL-100UF-25V">
</package>
</packages>
</library>
<library name="eagle-ltspice">
<description>Default symbols for import LTspice schematics&lt;p&gt;
2012-10-29 alf@cadsoft.de&lt;br&gt;</description>
<packages>
<package name="0204/7">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
type 0204, grid 7.5 mm</description>
</package>
</packages>
</library>
<library name="linear">
<description>&lt;b&gt;Linear Devices&lt;/b&gt;&lt;p&gt;
Operational amplifiers,  comparators, voltage regulators, ADCs, DACs, etc.&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="DIL08">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Electromechanical">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find anything that moves- switches, relays, buttons, potentiometers. Also, anything that goes on a board but isn't electrical in nature- screws, standoffs, etc.&lt;br&gt;&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is the end user's responsibility to ensure correctness and suitablity for a given componet or application. If you enjoy using this library, please buy one of our products at www.sparkfun.com.
&lt;br&gt;&lt;br&gt;
&lt;b&gt;Licensing:&lt;/b&gt; CC v3.0 Share-Alike You are welcome to use this library for commercial purposes. For attribution, we ask that when you begin to sell your device using our footprint, you email us with a link to the product being sold. We want bragging rights that we helped (in a very small part) to create your 8th world wonder. We would like the opportunity to feature your device on our homepage.</description>
<packages>
<package name="TRIM_POT">
</package>
</packages>
</library>
<library name="SparkFun-Connectors">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find connectors and sockets- basically anything that can be plugged into or onto.&lt;br&gt;&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is the end user's responsibility to ensure correctness and suitablity for a given componet or application. If you enjoy using this library, please buy one of our products at www.sparkfun.com.
&lt;br&gt;&lt;br&gt;
&lt;b&gt;Licensing:&lt;/b&gt; CC v3.0 Share-Alike You are welcome to use this library for commercial purposes. For attribution, we ask that when you begin to sell your device using our footprint, you email us with a link to the product being sold. We want bragging rights that we helped (in a very small part) to create your 8th world wonder. We would like the opportunity to feature your device on our homepage.</description>
<packages>
<package name="1X02">
</package>
</packages>
</library>
<library name="aliEagleLib">
<packages>
<package name="3.5MM-STEREO-JACK">
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="Q1" library="transistor-fet" package="TO92" value="2N3819">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C1" library="SparkFun-Passives" package="CPOL-RADIAL-100UF-25V" value=".01u">
<attribute name="VALUE"/>
<attribute name="NAME"/>
</element>
<element name="R1" library="eagle-ltspice" package="0204/7" value="47K">
<attribute name="SPICEMODEL" value="NONE"/>
<attribute name="SPICEPREFIX" value="R"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R2" library="eagle-ltspice" package="0204/7" value="47K">
<attribute name="SPICEMODEL" value="NONE"/>
<attribute name="SPICEPREFIX" value="R"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C2" library="SparkFun-Passives" package="CPOL-RADIAL-100UF-25V" value="100u">
<attribute name="VALUE"/>
<attribute name="NAME"/>
</element>
<element name="C3" library="SparkFun-Passives" package="CPOL-RADIAL-100UF-25V" value="10u">
<attribute name="VALUE"/>
<attribute name="NAME"/>
</element>
<element name="C4" library="SparkFun-Passives" package="CPOL-RADIAL-100UF-25V" value="10u">
<attribute name="VALUE"/>
<attribute name="NAME"/>
</element>
<element name="C5" library="SparkFun-Passives" package="CPOL-RADIAL-100UF-25V" value="10u">
<attribute name="VALUE"/>
<attribute name="NAME"/>
</element>
<element name="R3" library="eagle-ltspice" package="0204/7" value="10M">
<attribute name="SPICEMODEL" value="NONE"/>
<attribute name="SPICEPREFIX" value="R"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="IC1" library="linear" package="DIL08" value="OPA2134PA">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R4" library="eagle-ltspice" package="0204/7" value="22K">
<attribute name="SPICEMODEL" value="NONE"/>
<attribute name="SPICEPREFIX" value="R"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R5" library="eagle-ltspice" package="0204/7" value="1k">
<attribute name="SPICEMODEL" value="NONE"/>
<attribute name="SPICEPREFIX" value="R"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="R6" library="eagle-ltspice" package="0204/7" value="57k">
<attribute name="SPICEMODEL" value="NONE"/>
<attribute name="SPICEPREFIX" value="R"/>
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="U$1" library="SparkFun-Electromechanical" package="TRIM_POT" value="10K">
<attribute name="10K-POT" value="10K-POT"/>
</element>
<element name="BATTERY" library="SparkFun-Connectors" package="1X02" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
<attribute name="9-15V" value="9-15V"/>
</element>
<element name="U$2" library="aliEagleLib" package="3.5MM-STEREO-JACK" value="3.5MM-STEREO-JACK">
<attribute name="IN" value="IN"/>
</element>
<element name="U$3" library="aliEagleLib" package="3.5MM-STEREO-JACK" value="3.5MM-STEREO-JACK">
<attribute name="OUT" value="out"/>
</element>
</elements>
<signals>
<signal name="N$1">
<contactref element="C1" pad="1"/>
<contactref element="U$2" pad="TIP2"/>
<contactref element="U$2" pad="TIP1"/>
</signal>
<signal name="N$2">
<contactref element="C1" pad="2"/>
<contactref element="Q1" pad="2"/>
<contactref element="R3" pad="2"/>
</signal>
<signal name="N$4">
<contactref element="Q1" pad="3"/>
<contactref element="U$1" pad="3"/>
<contactref element="C5" pad="1"/>
</signal>
<signal name="N$6">
<contactref element="C5" pad="2"/>
<contactref element="IC1" pad="3"/>
<contactref element="R1" pad="1"/>
<contactref element="R2" pad="2"/>
</signal>
<signal name="GND">
<contactref element="C2" pad="2"/>
<contactref element="R5" pad="1"/>
<contactref element="U$1" pad="2"/>
<contactref element="BATTERY" pad="1"/>
<contactref element="R6" pad="1"/>
<contactref element="R2" pad="1"/>
<contactref element="IC1" pad="4"/>
<contactref element="U$2" pad="SLEEVE2"/>
<contactref element="U$2" pad="SLEEVE1"/>
<contactref element="U$3" pad="SLEEVE2"/>
<contactref element="U$3" pad="SLEEVE1"/>
</signal>
<signal name="V+">
<contactref element="C2" pad="1"/>
<contactref element="IC1" pad="8"/>
<contactref element="R1" pad="2"/>
<contactref element="Q1" pad="1"/>
<contactref element="BATTERY" pad="2"/>
</signal>
<signal name="N$7">
<contactref element="IC1" pad="1"/>
<contactref element="C4" pad="1"/>
<contactref element="R4" pad="2"/>
</signal>
<signal name="N$8">
<contactref element="R4" pad="1"/>
<contactref element="C3" pad="1"/>
<contactref element="IC1" pad="2"/>
</signal>
<signal name="N$9">
<contactref element="C3" pad="2"/>
<contactref element="R5" pad="2"/>
</signal>
<signal name="N$3">
<contactref element="R3" pad="1"/>
<contactref element="U$1" pad="1"/>
</signal>
<signal name="N$10">
<contactref element="C4" pad="2"/>
<contactref element="R6" pad="2"/>
<contactref element="U$3" pad="TIP2"/>
<contactref element="U$3" pad="TIP1"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
