<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.2">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="74.168" y2="0" width="0" layer="20"/>
<wire x1="74.168" y1="0" x2="74.168" y2="51.308" width="0" layer="20"/>
<wire x1="74.168" y1="51.308" x2="0" y2="51.308" width="0" layer="20"/>
<wire x1="0" y1="51.308" x2="0" y2="0" width="0" layer="20"/>
<text>MRP</text>
<text>2-ch</text>
<hole x="5.08" y="5.08" drill="3.9624"/>
<hole x="69.088" y="5.588" drill="3.9624"/>
<hole x="69.088" y="45.72" drill="3.9624"/>
<hole x="5.08" y="45.72" drill="3.9624"/>
<text>POWER</text>
<text>-15-30</text>
<text>+15-30</text>
<text>PGND</text>
<text>MUTE (5V)</text>
<text>GND</text>
<text>APM 2012</text>
<text>OFFSET SEL.-&gt;</text>
<text>LEFT: BIPOLAR</text>
<text>RIGHT: 1-SIDED</text>
<text>C4DM, QMUL</text>
<text>rev. C2</text>
<text>1</text>
<text>2</text>
<text>+12</text>
<text>-12</text>
<text>1</text>
<text>2</text>
</plain>
<libraries>
<library name="custom">
<packages>
<package name="MULTIWATT15">
<description>Multiwatt15V package for the L298 dual full bridge driver</description>
</package>
<package name="CUI-3533">
</package>
<package name="SOT-89R">
</package>
</packages>
</library>
<library name="linear">
<packages>
<package name="SO08">
<description>&lt;b&gt;Small Outline Package 8&lt;/b&gt;&lt;br&gt;
NS Package M08A</description>
</package>
<package name="SO14">
<description>&lt;b&gt;Small Outline Package 14&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="rcl">
<packages>
<package name="R0603">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;</description>
</package>
<package name="R2512">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;</description>
</package>
<package name="C0603">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;</description>
</package>
<package name="UD-10X10_NICHICON">
<description>&lt;b&gt;ALUMINUM ELECTROLYTIC CAPACITORS&lt;/b&gt; UD Series 10 x 10 mm&lt;p&gt;
Source: http://products.nichicon.co.jp/en/pdf/XJA043/e-ud.pdf</description>
</package>
<package name="UD-5X5,8_NICHICON">
<description>&lt;b&gt;ALUMINUM ELECTROLYTIC CAPACITORS&lt;/b&gt; UD Series 5 x 5.8 mm&lt;p&gt;
Source: http://products.nichicon.co.jp/en/pdf/XJA043/e-ud.pdf</description>
</package>
</packages>
</library>
<library name="con-molex">
<packages>
<package name="22-23-2021">
<description>.100" (2.54mm) Center Headers - 2 Pin</description>
</package>
<package name="KK-156-3">
<description>&lt;b&gt;KK 156 HEADER&lt;/b&gt;&lt;p&gt;
Source: http://www.molex.com/pdm_docs/sd/026604100_sd.pdf</description>
</package>
</packages>
</library>
<library name="pinhead">
<packages>
<package name="1X03">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="diode">
<packages>
<package name="SOT23">
<description>&lt;B&gt;DIODE&lt;/B&gt;</description>
</package>
</packages>
</library>
<library name="testpad">
<description>&lt;b&gt;Test Pins/Pads&lt;/b&gt;&lt;p&gt;
Cream on SMD OFF.&lt;br&gt;
new: Attribute TP_SIGNAL_NAME&lt;br&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="TP10SQ">
<description>&lt;b&gt;TEST PAD&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="IC1" library="custom" package="MULTIWATT15" value="LM1876"/>
<element name="IC6" library="linear" package="SO08" value="TL072D"/>
<element name="R1" library="rcl" package="R2512" value="0.1, 2W"/>
<element name="R2" library="rcl" package="R2512" value="0.1, 2W"/>
<element name="R33" library="rcl" package="R0603" value="100k"/>
<element name="R34" library="rcl" package="R0603" value="820"/>
<element name="R9" library="rcl" package="R0603" value="18k"/>
<element name="R10" library="rcl" package="R0603" value="1k"/>
<element name="R11" library="rcl" package="R0603" value="18k"/>
<element name="R12" library="rcl" package="R0603" value="1k"/>
<element name="R35" library="rcl" package="R0603" value="100k"/>
<element name="R36" library="rcl" package="R0603" value="820"/>
<element name="R13" library="rcl" package="R0603" value="18k"/>
<element name="R14" library="rcl" package="R0603" value="1k"/>
<element name="R15" library="rcl" package="R0603" value="18k"/>
<element name="R16" library="rcl" package="R0603" value="1k"/>
<element name="C12" library="rcl" package="C0603" value="0.1uF"/>
<element name="C13" library="rcl" package="C0603" value="0.1uF"/>
<element name="C11" library="rcl" package="C0603" value="0.1uF"/>
<element name="C2" library="rcl" package="UD-10X10_NICHICON" value="220uF"/>
<element name="C1" library="rcl" package="UD-10X10_NICHICON" value="220uF"/>
<element name="J1" library="con-molex" package="22-23-2021" value="22-23-2021">
<attribute name="OC_NEWARK" value="25C3832"/>
<attribute name="MPN" value="22-23-2021"/>
<attribute name="MF" value="MOLEX"/>
<attribute name="OC_FARNELL" value="1462926"/>
</element>
<element name="J2" library="con-molex" package="22-23-2021" value="22-23-2021">
<attribute name="OC_NEWARK" value="25C3832"/>
<attribute name="MPN" value="22-23-2021"/>
<attribute name="MF" value="MOLEX"/>
<attribute name="OC_FARNELL" value="1462926"/>
</element>
<element name="R37" library="rcl" package="R0603" value="100k"/>
<element name="R19" library="rcl" package="R0603" value="100k"/>
<element name="C9" library="rcl" package="UD-5X5,8_NICHICON" value="33uF"/>
<element name="C10" library="rcl" package="UD-5X5,8_NICHICON" value="33uF"/>
<element name="J21" library="con-molex" package="KK-156-3" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="C3" library="rcl" package="C0603" value="0.1uF"/>
<element name="C4" library="rcl" package="C0603" value="0.1uF"/>
<element name="R3" library="rcl" package="R0603" value="0"/>
<element name="IC4" library="linear" package="SO14" value="TL074D"/>
<element name="D1" library="diode" package="SOT23" value="BAV99"/>
<element name="R4" library="rcl" package="R0603" value="10k"/>
<element name="R5" library="rcl" package="R0603" value="10k"/>
<element name="C6" library="rcl" package="C0603" value="0.22uF"/>
<element name="R6" library="rcl" package="R0603" value="3.3M"/>
<element name="R7" library="rcl" package="R0603" value="100"/>
<element name="R8" library="rcl" package="R0603" value="10k"/>
<element name="R17" library="rcl" package="R0603" value="10k"/>
<element name="R18" library="rcl" package="R0603" value="10k"/>
<element name="R20" library="rcl" package="R0603" value="10k"/>
<element name="R21" library="rcl" package="R0603" value="10k"/>
<element name="R22" library="rcl" package="R0603" value="1M (DNI)"/>
<element name="C7" library="rcl" package="C0603" value="0.1uF"/>
<element name="JP2" library="pinhead" package="1X03" value=""/>
<element name="IC5" library="linear" package="SO14" value="TL074D"/>
<element name="D2" library="diode" package="SOT23" value="BAV99"/>
<element name="R23" library="rcl" package="R0603" value="10k"/>
<element name="R24" library="rcl" package="R0603" value="10k"/>
<element name="C5" library="rcl" package="C0603" value="0.22uF"/>
<element name="R25" library="rcl" package="R0603" value="3.3M"/>
<element name="R26" library="rcl" package="R0603" value="100"/>
<element name="R27" library="rcl" package="R0603" value="10k"/>
<element name="R28" library="rcl" package="R0603" value="10k"/>
<element name="R29" library="rcl" package="R0603" value="10k"/>
<element name="R30" library="rcl" package="R0603" value="10k"/>
<element name="R31" library="rcl" package="R0603" value="10k"/>
<element name="R32" library="rcl" package="R0603" value="1M (DNI)"/>
<element name="C8" library="rcl" package="C0603" value="0.1uF"/>
<element name="JP3" library="pinhead" package="1X03" value=""/>
<element name="X7" library="con-molex" package="22-23-2021" value="22-23-2021">
<attribute name="OC_NEWARK" value="25C3832"/>
<attribute name="MPN" value="22-23-2021"/>
<attribute name="MF" value="MOLEX"/>
<attribute name="OC_FARNELL" value="1462926"/>
</element>
<element name="U$3" library="custom" package="CUI-3533" value="CUI-3533"/>
<element name="IC3" library="custom" package="SOT-89R" value="78L12-SOT"/>
<element name="IC2" library="custom" package="SOT-89R" value="79L12-SOT"/>
<element name="TP1" library="testpad" package="TP10SQ" value="TPTP10SQ">
<attribute name="TP_SIGNAL_NAME" value=""/>
</element>
<element name="TP2" library="testpad" package="TP10SQ" value="TPTP10SQ">
<attribute name="TP_SIGNAL_NAME" value=""/>
</element>
</elements>
<signals>
<signal name="N$1">
<contactref element="J1" pad="1"/>
<contactref element="IC1" pad="3"/>
<contactref element="R33" pad="1"/>
</signal>
<signal name="N$2">
<contactref element="IC1" pad="7"/>
<contactref element="R34" pad="1"/>
<contactref element="R33" pad="2"/>
</signal>
<signal name="N$3">
<contactref element="IC6" pad="2"/>
<contactref element="R10" pad="2"/>
<contactref element="R9" pad="1"/>
</signal>
<signal name="N$4">
<contactref element="IC6" pad="3"/>
<contactref element="R12" pad="2"/>
<contactref element="R11" pad="1"/>
</signal>
<signal name="N$5">
<contactref element="R9" pad="2"/>
<contactref element="IC6" pad="1"/>
<contactref element="R34" pad="2"/>
</signal>
<signal name="GND">
<contactref element="R11" pad="2"/>
<contactref element="R15" pad="1"/>
<contactref element="R37" pad="2"/>
<contactref element="R19" pad="2"/>
<contactref element="R3" pad="2"/>
<contactref element="IC4" pad="3"/>
<contactref element="R6" pad="2"/>
<contactref element="C6" pad="2"/>
<contactref element="IC4" pad="12"/>
<contactref element="IC4" pad="10"/>
<contactref element="IC5" pad="3"/>
<contactref element="R25" pad="2"/>
<contactref element="C5" pad="2"/>
<contactref element="IC5" pad="12"/>
<contactref element="IC5" pad="10"/>
<contactref element="X7" pad="2"/>
<contactref element="U$3" pad="P$1"/>
</signal>
<signal name="N$7">
<contactref element="R1" pad="2"/>
<contactref element="J1" pad="2"/>
<contactref element="R12" pad="1"/>
</signal>
<signal name="PE">
<contactref element="R1" pad="1"/>
<contactref element="IC1" pad="10"/>
<contactref element="IC1" pad="5"/>
<contactref element="C1" pad="+"/>
<contactref element="C2" pad="-"/>
<contactref element="C11" pad="1"/>
<contactref element="C13" pad="2"/>
<contactref element="R2" pad="1"/>
<contactref element="C9" pad="-"/>
<contactref element="C10" pad="+"/>
<contactref element="J21" pad="3"/>
<contactref element="R10" pad="1"/>
<contactref element="R14" pad="1"/>
<contactref element="C4" pad="2"/>
<contactref element="C3" pad="2"/>
<contactref element="R3" pad="1"/>
<contactref element="IC3" pad="2"/>
<contactref element="IC2" pad="1"/>
</signal>
<signal name="N$6">
<contactref element="IC1" pad="12"/>
<contactref element="R36" pad="1"/>
<contactref element="R35" pad="2"/>
</signal>
<signal name="N$8">
<contactref element="R35" pad="1"/>
<contactref element="IC1" pad="1"/>
<contactref element="J2" pad="1"/>
</signal>
<signal name="N$9">
<contactref element="R13" pad="1"/>
<contactref element="R14" pad="2"/>
<contactref element="IC6" pad="6"/>
</signal>
<signal name="N$10">
<contactref element="IC6" pad="5"/>
<contactref element="R15" pad="2"/>
<contactref element="R16" pad="2"/>
</signal>
<signal name="N$11">
<contactref element="R13" pad="2"/>
<contactref element="IC6" pad="7"/>
<contactref element="R36" pad="2"/>
</signal>
<signal name="N$12">
<contactref element="R2" pad="2"/>
<contactref element="J2" pad="2"/>
<contactref element="R16" pad="1"/>
</signal>
<signal name="+12V">
<contactref element="C12" pad="1"/>
<contactref element="IC6" pad="8"/>
<contactref element="C9" pad="+"/>
<contactref element="C4" pad="1"/>
<contactref element="R22" pad="1"/>
<contactref element="IC4" pad="4"/>
<contactref element="C7" pad="1"/>
<contactref element="R32" pad="1"/>
<contactref element="IC5" pad="4"/>
<contactref element="C8" pad="1"/>
<contactref element="IC3" pad="1"/>
<contactref element="TP1" pad="TP"/>
</signal>
<signal name="-12V">
<contactref element="IC6" pad="4"/>
<contactref element="C12" pad="2"/>
<contactref element="C10" pad="-"/>
<contactref element="C3" pad="1"/>
<contactref element="IC4" pad="11"/>
<contactref element="C7" pad="2"/>
<contactref element="IC5" pad="11"/>
<contactref element="C8" pad="2"/>
<contactref element="IC2" pad="3"/>
<contactref element="TP2" pad="TP"/>
</signal>
<signal name="+24V">
<contactref element="C2" pad="+"/>
<contactref element="IC1" pad="15"/>
<contactref element="IC1" pad="2"/>
<contactref element="C13" pad="1"/>
<contactref element="J21" pad="2"/>
<contactref element="IC3" pad="3"/>
</signal>
<signal name="-24V">
<contactref element="IC1" pad="4"/>
<contactref element="C1" pad="-"/>
<contactref element="C11" pad="2"/>
<contactref element="J21" pad="1"/>
<contactref element="IC2" pad="2"/>
</signal>
<signal name="N$13">
<contactref element="IC1" pad="8"/>
<contactref element="R37" pad="1"/>
<contactref element="JP2" pad="2"/>
</signal>
<signal name="N$14">
<contactref element="IC1" pad="13"/>
<contactref element="R19" pad="1"/>
<contactref element="JP3" pad="2"/>
</signal>
<signal name="MUTE">
<contactref element="IC1" pad="6"/>
<contactref element="IC1" pad="9"/>
<contactref element="IC1" pad="11"/>
<contactref element="IC1" pad="14"/>
<contactref element="X7" pad="1"/>
</signal>
<signal name="N$82">
<contactref element="D1" pad="3"/>
<contactref element="IC4" pad="1"/>
</signal>
<signal name="N$83">
<contactref element="R4" pad="1"/>
<contactref element="IC4" pad="2"/>
<contactref element="D1" pad="1"/>
<contactref element="R5" pad="2"/>
</signal>
<signal name="N$85">
<contactref element="C6" pad="1"/>
<contactref element="R6" pad="1"/>
<contactref element="R7" pad="2"/>
<contactref element="IC4" pad="5"/>
</signal>
<signal name="N$78">
<contactref element="D1" pad="2"/>
<contactref element="R7" pad="1"/>
</signal>
<signal name="N$87">
<contactref element="IC4" pad="6"/>
<contactref element="IC4" pad="7"/>
<contactref element="R5" pad="1"/>
<contactref element="R21" pad="1"/>
</signal>
<signal name="N$89">
<contactref element="R18" pad="1"/>
<contactref element="IC4" pad="9"/>
<contactref element="R20" pad="2"/>
</signal>
<signal name="N$91">
<contactref element="R21" pad="2"/>
<contactref element="R22" pad="2"/>
<contactref element="IC4" pad="13"/>
<contactref element="R8" pad="1"/>
<contactref element="R17" pad="2"/>
</signal>
<signal name="CH1_OUT_INV">
<contactref element="R17" pad="1"/>
<contactref element="IC4" pad="14"/>
<contactref element="R18" pad="2"/>
</signal>
<signal name="CH1_OUT">
<contactref element="R20" pad="1"/>
<contactref element="IC4" pad="8"/>
<contactref element="JP2" pad="1"/>
</signal>
<signal name="CH1_IN">
<contactref element="JP2" pad="3"/>
<contactref element="R4" pad="2"/>
<contactref element="R8" pad="2"/>
<contactref element="U$3" pad="P$2"/>
</signal>
<signal name="N$15">
<contactref element="D2" pad="3"/>
<contactref element="IC5" pad="1"/>
</signal>
<signal name="N$16">
<contactref element="R23" pad="1"/>
<contactref element="IC5" pad="2"/>
<contactref element="D2" pad="1"/>
<contactref element="R24" pad="2"/>
</signal>
<signal name="N$17">
<contactref element="C5" pad="1"/>
<contactref element="R25" pad="1"/>
<contactref element="R26" pad="2"/>
<contactref element="IC5" pad="5"/>
</signal>
<signal name="N$18">
<contactref element="D2" pad="2"/>
<contactref element="R26" pad="1"/>
</signal>
<signal name="N$19">
<contactref element="IC5" pad="6"/>
<contactref element="IC5" pad="7"/>
<contactref element="R24" pad="1"/>
<contactref element="R31" pad="1"/>
</signal>
<signal name="N$20">
<contactref element="R29" pad="1"/>
<contactref element="IC5" pad="9"/>
<contactref element="R30" pad="2"/>
</signal>
<signal name="N$21">
<contactref element="R31" pad="2"/>
<contactref element="R32" pad="2"/>
<contactref element="IC5" pad="13"/>
<contactref element="R27" pad="1"/>
<contactref element="R28" pad="2"/>
</signal>
<signal name="CH2_OUT_INV">
<contactref element="R28" pad="1"/>
<contactref element="IC5" pad="14"/>
<contactref element="R29" pad="2"/>
</signal>
<signal name="CH2_OUT">
<contactref element="R30" pad="1"/>
<contactref element="IC5" pad="8"/>
<contactref element="JP3" pad="1"/>
</signal>
<signal name="CH2_IN">
<contactref element="R23" pad="2"/>
<contactref element="R27" pad="2"/>
<contactref element="JP3" pad="3"/>
<contactref element="U$3" pad="P$3"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
