Integrated Circuit Mixers . 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src="http://www.phoenixcomputerlabs.com/All-About-Mixers/buttons/links.gif" border="0" alt="links" width="168" height="33" hspace="3" vspace="5"> </a> </div> </center> <br> <br> </td> <td width="20"> </td> <td valign="Top"> <center> <font face="Helvetica, Arial, sans-serif"><big><big><big><big><big><br> Integrated Circuit Based Mixers<br> Page Two (2) of Four (4). </big></big></big></big></big></font><br> </center> <table border="0" width="780"> <tbody> <tr> <td valign="Top"> <p align=Left><br> <br> <font face="Arial,helvetica" color=#990033 size=4>A simple Multi-Input Active mixer circuit<br>using TL072 Op Amps<br></font> <br> </td> </tr> <br> <div align="Left">  <tr> <br> <td width=760 height=212 valign=top align="Left" bgcolor=#ffffff> <div align="Left"><img name="Simple-Multi-Input-Active-Mixer.jpg" src="http://www.phoenixcomputerlabs.com/All-About-Mixers/images/Simple-Multi-Input-Active-Mixer.jpg" border="0" alt="" align="Left" hspace="5" vspace="0"> <p align=justify><font face="Helvetica, Arial, sans-serif" color=#000000 size=3>As far as mixers go: <br>This one is an excellent example of simplicity. Not really practicle, because it "lacks" the "basic" Gain Controls needed for practical applications. <b>But,</b> this mixer <u>is</u> a viable candidate for a no-frills circuit to satisfy a requirement to simply combine multiple inputs. It also has the distinction of providing just enough gain necessary to over come insertion loss, therefore it is classified as a <u>unity gain</u> circuit.<br> <br> </table></tbody> <table border="0" width="970"> <tbody> <tr> <td width=860 height=16 valign=top align="Left"> <font face="Arial,helvetica" color=#990033 size=4>A simple Multi-Input Active Mixer<br>With Input Channel Gain Controls<br><br></font></center> </td> </tr> <tr> <td width=950 height=112 valign=top align="Left" bgcolor=#ffffff> <div align="Left"><img name="Simple-Multi-Input-Active-Mixer-w-Input-Gain-Controls.jpg" src="http://www.phoenixcomputerlabs.com/All-About-Mixers/images/Simple-Multi-Input-Active-Mixer-w-Input-Gain-Controls.jpg" border="0" alt="" align="Left" hspace="5" vspace="0"> <p align=justify><font face="Helvetica, Arial, sans-serif" color=#000000 size=3>This is a <b>"more practical"</b> application for an active mixer:<br><br> This circuit provides for individual gain controls at the inputs. This allows for adjustments of levels prior to mixing. It also <br> provides the operator with the ability to keep levels at all inputs within acceptable ranges to prevent "overdrive" and excessive volume at the output.<br> <br> This is refered to as <i>"Riding the Gain"</i> in the professional audio and broadcast industry.<br> <br> You will also notice that both of these "active Mixers" have "two" outputs.... Why, because this type of mixer is more likely to be used as an instrumental mixer. The two outputs, allow for the mixer to "feed" two separate amplifiers. This is every rocker's dream - more amps, for louder sound. It "also" allows for feeding one signal into a special effects unit to tweak the sound, and/or allow for adding the sound tweaks to the "original" sound.</font><br> </td> </tr> </table>  </td><br> </table></tbody> <table border="0" width="970"> <tbody> <tr> <font size="5" face="arial,helvetica" color="#ffffff"><br> <center>To go to page three: <b>Click</b><a href="IC-Mixers3.html"> Here</a></center></font> <br> <br> <font size="5" face="arial,helvetica" color="#ffffff"><br> <center>To go back to IC Mixer's Page one: <b>Click</b><a href="IC-Mixers1.html"> Here</a></center></font> <br> <p><font size="3" face="arial,helvetica" color="#ffffff"><br> <table border="0" width="960"> <tbody> <tr> <td valign="Top"> <div align="Center"><font size="3" face="arial,helvetica" color="#ffffff"> <table cellpadding="0" cellspacing="0" border="0"> <tbody> <tr> <td align="Center" colspan="4"><font face="TIMES"> <b>Check out these interesting Links below:<br> <br> </b></font></td> </tr> <tr> <td><font face="ARIAL" size="2"> <b><a href="http://www.phoenixcomputerlabs.com/Index1.html" style="text-decoration: none; "> Phoenix Computer Labs</a> </b></font></td> <td width="25" align="Right"> <img src="http://ivenue.com/images/content/button_multi_color.gif" vspace="5"> </td> <td width="20" align="Center" rowspan="4"> <img src="http://www.ivenue.com/images/content/white_pxl.gif" height="75" width="1"> </td> <td><font face="ARIAL" size="2"> <b><a href="http://www.phoenixcomputerlabs.com/EDS/index-eds.html" style="text-decoration: none; "> Electronic Design Systems</a> </b></font></td> <td width="25" align="Right"> <img src="http://www.ivenue.com/images/content/button_multi_color.gif" vspace="5"> </td> <td width="20" align="Center" rowspan="4"> <img src="http://www.ivenue.com/images/content/white_pxl.gif" height="75" width="1"> </td> </tr> <tr> <td><font face="ARIAL" size="2"> <b><a href="http://www.phoenixcomputerlabs.com/AZBioFuels/index-AZBioFuels.html" style="text-decoration: none; "> Arizona Bio Fuels Research</a> </b></font></td> <td width="25" align="Right"> <img src="http://www.ivenue.com/images/content/button_multi_color.gif" vspace="5"> </td> <td><font face="ARIAL" size="2"> <b><a href="http://www.worldwidewanderings.com/" style="text-decoration: none; "> World Wide Wanderings</a> </b></font></td> <td width="25" align="Right"> <img src="http://www.ivenue.com/images/content/button_multi_color.gif" vspace="5"> </td> </tr> <tr> <td><font face="ARIAL" size="2"> <b><a href="http://www.phoenixcomputerlabs.com/HFT/Index-hft.html" style="text-decoration: none; "> High Forrest Technology</a> </b></font></td> <td width="25" align="Right"> <img src="http://www.ivenue.com/images/content/button_multi_color.gif" vspace="5"> </td> <td><font face="ARIAL" size="2"> <b><a href="http://phoenixcomputerlabs.com/Hildes-Hot-Dogs/index-Hildes-Hot-Dogs.html" style="text-decoration: none; "> Great Danes Restaurant<br> (Hilde's Hot Dogs)</a> </b></font></td> <td width="25" align="Right"> <img src="http://www.ivenue.com/images/content/button_multi_color.gif" vspace="5"> </td> </tr> <tr> <td><font face="ARIAL" size="2"> <b><a href="http://www.funkyaliens.com/" style="text-decoration: none; "> Funky Aliens (Comical)</a> </b></font></td> <td width="25" align="Right"> <img src="http://www.ivenue.com/images/content/button_multi_color.gif" vspace="5"> </td> <td><font face="ARIAL" size="2"> <b><a href="http://phoenixcomputerlabs.com/LavaggioPrima/index-Lavaggio.htm" style="text-decoration: none; "> Lavaggio Prima - AZ</a> </b></font></td> <td width="25" align="Right"> <img src="http://www.ivenue.com/images/content/button_multi_color.gif" vspace="5"> </td> </tbody> </table> </font></div> </td> <td valign="Top"> </td> </tr> </tbody> </table> <br> <hr> <center> <center> <a href="index-Mixers.html">Home</a> | <a href="http://www.phoenixcomputerlabs.com/All-About-Mixers/aboutus.html"> About Us</a> | <a href="http://www.phoenixcomputerlabs.com/All-About-Mixers/contact.html"> Contact Info</a> | <a href="http://www.phoenixcomputerlabs.com/All-About-Mixers/feedback.html"> Feedback</a> <br> </center> </center> </td> </tr> </tbody> </table> </body> </html>