<?xml version="1.0" encoding='utf-8'?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Differential amplifier - Page 2 - Wikipedia">
<p>
<a accesskey="1" href="page.php?w=Differential_amplifier&amp;p=1">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Differential_amplifier&amp;p=3">3.Next</a>
</p>
<p>of the amplifier.</p>

<p>Single amplifiers are usually implemented by either adding the appropriate feedback <a href="page.php?w=resistor">resistor</a>s to a standard <a href="page.php?w=Operational_amplifier">op-amp</a>, or with a dedicated <a href="page.php?w=integrated_circuit">integrated circuit</a> containing internal feedback resistors. It is also a common sub-component of larger integrated circuits handling analog signals.</p>

<p><big> Mathematics of the amplifier </big></p>
<p>
: </p>

<p>where  and  are the input voltages, and  is the differential</p><p>
<a accesskey="1" href="page.php?w=Differential_amplifier&amp;p=1">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Differential_amplifier&amp;p=3">3.Next</a>
</p>

<do type="prev" label="Search">
        <go href="search.wml"/>
</do>

</card>
</wml>
