<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.5.0">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="83.49" y2="0" width="0" layer="20"/>
<wire x1="83.49" y1="0" x2="83.49" y2="43.17" width="0" layer="20"/>
<wire x1="83.49" y1="43.17" x2="0" y2="43.17" width="0" layer="20"/>
<wire x1="0" y1="43.17" x2="0" y2="0" width="0" layer="20"/>
<text>This work is released under the Creative
Commons Attribution-NonCommercial
Share-Alike 3.0 Unported License.
All derivative works are to be attributed
to OpenROV.</text>
<text>40kHz Ultrasonic
Transmit Amplifier
Rev 0.0</text>
<text>9-18V</text>
<text>Vin</text>
<text>Vout</text>
<text>GND</text>
<text>GND</text>
<text>GND</text>
<text>Vin</text>
</plain>
<libraries>
<library name="transistor-neu-to92">
<description>&lt;b&gt;NPN Transistors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="TO220">
<description>&lt;b&gt;TO 220 horizontal&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="transistor">
<description>&lt;b&gt;Transistors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="TO220">
<description>&lt;b&gt;TO 220 horizontal&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="AXIAL-0.4">
<description>1/4W Resistor, 0.4" wide&lt;p&gt;

Yageo CFR series &lt;a href="http://www.yageo.com/pdf/yageo/Leaded-R_CFR_2008.pdf"&gt;http://www.yageo.com/pdf/yageo/Leaded-R_CFR_2008.pdf&lt;/a&gt;</description>
</package>
<package name="CAP-PTH-SMALL2">
</package>
<package name="AXIAL-0.8">
<description>2W Resistor, 0.8" wide&lt;p&gt;

Yageo CFR series &lt;a href="http://www.yageo.com/pdf/yageo/Leaded-R_CFR_2008.pdf"&gt;http://www.yageo.com/pdf/yageo/Leaded-R_CFR_2008.pdf&lt;/a&gt;</description>
</package>
<package name="CPOL-RADIAL-100UF-25V">
</package>
</packages>
</library>
<library name="SparkFun-DiscreteSemi">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find discrete semiconductors- transistors, diodes, TRIACs, optoisolators, 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="DIODE-1N4148">
</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="dc-dc-converter">
<description>&lt;b&gt;DC-DC Converters&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="DCW08">
</package>
</packages>
</library>
<library name="pinhead">
<description>&lt;b&gt;Pin Header Connectors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="1X02">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="T1" library="transistor-neu-to92" package="TO220" value="TIP31C"/>
<element name="T2" library="transistor" package="TO220" value="TIP32C"/>
<element name="C3" library="SparkFun-Passives" package="CAP-PTH-SMALL2" value=""/>
<element name="R7" library="SparkFun-Passives" package="AXIAL-0.4" value=""/>
<element name="R4" library="SparkFun-Passives" package="AXIAL-0.4" value=""/>
<element name="R8" library="SparkFun-Passives" package="AXIAL-0.4" value=""/>
<element name="R9" library="SparkFun-Passives" package="AXIAL-0.4" value=""/>
<element name="R10" library="SparkFun-Passives" package="AXIAL-0.4" value=""/>
<element name="R6" library="SparkFun-Passives" package="AXIAL-0.4" value=""/>
<element name="R5" library="SparkFun-Passives" package="AXIAL-0.4" value=""/>
<element name="D1" library="SparkFun-DiscreteSemi" package="DIODE-1N4148" value=""/>
<element name="D2" library="SparkFun-DiscreteSemi" package="DIODE-1N4148" value=""/>
<element name="IC1" library="linear" package="DIL08" value="NE5532N"/>
<element name="R3" library="SparkFun-Passives" package="AXIAL-0.4" value=""/>
<element name="C2" library="SparkFun-Passives" package="CAP-PTH-SMALL2" value=""/>
<element name="C1" library="SparkFun-Passives" package="CAP-PTH-SMALL2" value=""/>
<element name="R2" library="SparkFun-Passives" package="AXIAL-0.4" value=""/>
<element name="R1" library="SparkFun-Passives" package="AXIAL-0.4" value=""/>
<element name="U1" library="dc-dc-converter" package="DCW08" value="DCW08"/>
<element name="JP1" library="pinhead" package="1X02" value=""/>
<element name="JP2" library="pinhead" package="1X02" value=""/>
<element name="R11" library="SparkFun-Passives" package="AXIAL-0.8" value=""/>
<element name="C4" library="SparkFun-Passives" package="CPOL-RADIAL-100UF-25V" value=""/>
<element name="C5" library="SparkFun-Passives" package="CPOL-RADIAL-100UF-25V" value=""/>
<element name="JP3" library="pinhead" package="1X02" value=""/>
</elements>
<signals>
<signal name="N$1">
<contactref element="R9" pad="P$1"/>
<contactref element="R10" pad="P$2"/>
<contactref element="C3" pad="2"/>
<contactref element="R6" pad="P$1"/>
<contactref element="R11" pad="P$1"/>
</signal>
<signal name="N$2">
<contactref element="T1" pad="3"/>
<contactref element="R9" pad="P$2"/>
</signal>
<signal name="N$3">
<contactref element="T2" pad="3"/>
<contactref element="R10" pad="P$1"/>
</signal>
<signal name="N$4">
<contactref element="T1" pad="1"/>
<contactref element="R7" pad="P$1"/>
<contactref element="D1" pad="A"/>
</signal>
<signal name="N$8">
<contactref element="C3" pad="1"/>
<contactref element="R5" pad="P$2"/>
<contactref element="R6" pad="P$2"/>
<contactref element="IC1" pad="2"/>
</signal>
<signal name="N$5">
<contactref element="T2" pad="1"/>
<contactref element="R8" pad="P$2"/>
<contactref element="D2" pad="C"/>
</signal>
<signal name="V+">
<contactref element="IC1" pad="8"/>
<contactref element="IC1" pad="8"/>
<contactref element="R7" pad="P$2"/>
<contactref element="T1" pad="2"/>
<contactref element="U1" pad="14"/>
<contactref element="C4" pad="1"/>
</signal>
<signal name="N$6">
<contactref element="R4" pad="P$2"/>
<contactref element="IC1" pad="3"/>
<contactref element="C1" pad="2"/>
<contactref element="R3" pad="P$2"/>
<contactref element="IC1" pad="7"/>
</signal>
<signal name="GND">
<contactref element="R4" pad="P$1"/>
<contactref element="R5" pad="P$1"/>
<contactref element="IC1" pad="5"/>
<contactref element="R2" pad="P$1"/>
<contactref element="U1" pad="2"/>
<contactref element="U1" pad="3"/>
<contactref element="U1" pad="9"/>
<contactref element="U1" pad="16"/>
<contactref element="JP1" pad="2"/>
<contactref element="C4" pad="2"/>
<contactref element="C5" pad="1"/>
<contactref element="JP3" pad="2"/>
<contactref element="JP2" pad="2"/>
</signal>
<signal name="V-">
<contactref element="IC1" pad="4"/>
<contactref element="IC1" pad="4"/>
<contactref element="R8" pad="P$1"/>
<contactref element="T2" pad="2"/>
<contactref element="U1" pad="11"/>
<contactref element="C5" pad="2"/>
</signal>
<signal name="N$7">
<contactref element="R1" pad="P$1"/>
<contactref element="C2" pad="1"/>
<contactref element="C1" pad="1"/>
<contactref element="R2" pad="P$2"/>
</signal>
<signal name="N$9">
<contactref element="C2" pad="2"/>
<contactref element="IC1" pad="6"/>
<contactref element="R3" pad="P$1"/>
</signal>
<signal name="VCC">
<contactref element="U1" pad="22"/>
<contactref element="U1" pad="23"/>
<contactref element="JP1" pad="1"/>
</signal>
<signal name="VIN">
<contactref element="R1" pad="P$2"/>
<contactref element="JP3" pad="1"/>
</signal>
<signal name="N$16">
</signal>
<signal name="N$10">
<contactref element="R11" pad="P$2"/>
<contactref element="JP2" pad="1"/>
</signal>
<signal name="N$11">
</signal>
<signal name="N$12">
</signal>
<signal name="N$13">
</signal>
<signal name="N$14">
<contactref element="D1" pad="C"/>
<contactref element="D2" pad="A"/>
<contactref element="IC1" pad="1"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
