<SUBMISSION>
<ACCESSION-NUMBER>0001104659-06-011509
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>2
<PERIOD>20060217
<ITEMS>2.05
<ITEMS>9.01
<FILING-DATE>20060223
<DATE-OF-FILING-DATE-CHANGE>20060223
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>ADVANCED POWER TECHNOLOGY INC
<CIK>0001114973
<ASSIGNED-SIC>3674
<IRS-NUMBER>930875072
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>001-16047
<FILM-NUMBER>06638569
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>405 SW COLUMBIA STREET
<CITY>BEND
<STATE>OR
<ZIP>97702
<PHONE>5413828028
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>405 SW COLUMBIA STREET
<CITY>BEND
<STATE>OR
<ZIP>97702
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a06-5381_38k.htm
<DESCRIPTION>CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES
<TEXT>
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<div style="border:none;border-top:double windowtext 9.0pt;padding:0in 0in 0in 0in;">

<p align="center" style="border:none;margin:0in 0in .0001pt;padding:0in;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">&nbsp;</font></b></p>

</div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED
STATES</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SECURITIES
AND EXCHANGE COMMISSION</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington, D.C.&nbsp;&nbsp; 20549</font></b></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM
8-K</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT
REPORT</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Pursuant
to Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="4" face="Times New Roman" style="font-size:14.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of Report
(Date of Earliest Event Reported): <b><font style="font-weight:bold;">February 17,
2006</font></b></font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">ADVANCED
POWER TECHNOLOGY, INC.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of
registrant as specified in its charter)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="114%" style="border-collapse:collapse;margin-left:-41.3pt;width:114.12%;">
 <tr>
  <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.18%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Delaware</font></b></p>
  </td>
  <td width="1%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:1.14%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.32%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">001-16047</font></b></p>
  </td>
  <td width="1%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:1.18%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.16%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">93-0875072</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="32%" valign="top" style="padding:0in .7pt 0in .7pt;width:32.18%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
  jurisdiction of<br>
  incorporation or organization)</font></p>
  </td>
  <td width="1%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:1.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.32%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission File
  No.)</font></p>
  </td>
  <td width="1%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:1.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.16%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer<br>
  Identification No.)</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">405
SW Columbia Street,<br>
Bend, Oregon 97702</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of
principal executive offices) (ZIP Code)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Registrant&#146;s
telephone number, including area code:</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(541)
382-8028</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the appropriate box
below if the Form 8- filing is intended to simultaneously satisfy the filing
obligation of the registrant under any of the following provisions (See General
Instruction A.2):</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr>
  <td width="100%" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;"> Written communications pursuant to
  Rule 425 under the Securities Act (17 CFR 230.425)</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr>
  <td width="100%" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;"> Soliciting material pursuant to Rule
  14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr>
  <td width="100%" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;"> Pre-commencement communications
  pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr>
  <td width="100%" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;">Pre-commencement communications
  pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="border:none;border-bottom:double windowtext 9.0pt;padding:0in 0in 0in 0in;">

<p style="border:none;margin:0in 0in .0001pt;padding:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

</div>

<div style="margin:0in 0in .0001pt;"><hr size="2" width="100%" noshade color="gray" align="left"></div>


<!-- SEQ.=1,FOLIO='',FILE='C:\JMS\ksendil\06-5381-3\task842078\5381-3-ba.htm',USER='sksivasankaran',CD='Feb 23 22:11 2006' -->
<br clear="all" style="page-break-before:always;">


<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2.05 Costs Associated with
Exit or Disposal Activities</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">As announced in
our media release attached hereto as Exhibit 99.1, on February 17, 2006 Advanced
Power Technology, Inc. finalized its decision and announced to employees the
planned closure of its facility in Montgomeryville, Pennsylvania. The business
management functions and remaining manufacturing activities currently located
in Montgomeryville will be transferred to our facility in Santa Clara,
California.&#160; This action is in addition
to the actions announced on July 21, 2005 in our second quarter 2005 earnings
release, which included the increased use of offshore manufacturing
subcontractors. We expect that this restructuring action will be completed over
the next twelve months and will lead to an additional reduction of
approximately 8% of our total workforce.&#160;
We estimate that this restructuring action will result in pretax
restructuring charges of approximately $440,000 over the 12 month time frame.&#160; The charges will include one-time severance
costs of approximately $320,000 to be settled in cash, and non-cash charges
related to other exit costs of approximately $120,000. Our media release
attached hereto as Exhibit 99.1 is being furnished under Item 2.05 of Form 8-K.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 9.01 Financial Statements
and Exhibits</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-family:Times New Roman;margin:0in 0in .0001pt .75in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Exhibits</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="8%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:8.0%;">
  <p style="margin:0in 0in .0001pt;"><a name="TableHead"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Exhibit
  No.</font></b></a></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.62%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="89%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:89.38%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Description</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:8.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:89.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Media Release dated February 23, 2006, &#147;Advanced
  Power Technology Announces Additional Consolidation Action.&#148;</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><u><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES</font></u></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the requirements of Section&nbsp;13 of the
Securities Exchange Act of 1934, as amended, the Registrant has duly caused
this report to be signed on its behalf by the undersigned; thereunto duly
authorized this 23rd day of February, 2006.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:2.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:2.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="68%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:68.26%;">
  <p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ADVANCED POWER TECHNOLOGY, INC.</font></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="43%" valign="top" style="padding:0in .7pt 0in .7pt;width:43.92%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="24%" valign="top" style="padding:0in .7pt 0in .7pt;width:24.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="43%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:43.92%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">BY:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /s/ GREG M. HAUGEN</font></p>
  </td>
  <td width="24%" valign="top" style="padding:0in .7pt 0in .7pt;width:24.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="43%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:43.92%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="24%" valign="top" style="padding:0in .7pt 0in .7pt;width:24.34%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="68%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:68.26%;">
  <p style="margin:0in 0in .0001pt 40.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Greg M. Haugen</font></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="68%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:68.26%;">
  <p style="margin:0in 0in .0001pt 40.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Vice President, Finance and Administration,</font></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="68%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:68.26%;">
  <p style="margin:0in 0in .0001pt 40.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Financial Officer and Secretary</font></p>
  </td>
 </tr>
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  <td width="31%" valign="top" style="padding:0in .7pt 0in .7pt;width:31.74%;">
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  <p style="margin:0in 0in .0001pt 40.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Principal Financial Officer)</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>

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<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>a06-5381_3ex99d1.htm
<DESCRIPTION>EXHIBIT 99
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<h1 align="right" style="margin:0in 0in .0001pt;page-break-after:avoid;text-align:right;text-decoration:underline;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;text-decoration:none;">Exhibit 99.1</font></b></h1>

<h1 style="margin:0in 0in .0001pt;page-break-after:avoid;text-decoration:underline;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;text-decoration:none;">MEDIA RELEASE</font></b></h1>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<h2 align="left" style="margin:0in 0in .0001pt;page-break-after:avoid;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></h2>

<h2 style="margin:0in 0in .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></h2>

<h2 style="margin:0in 0in .0001pt;page-break-after:avoid;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">ADVANCED POWER TECHNOLOGY</font></b></h2>

<h2 style="margin:0in 0in .0001pt;page-break-after:avoid;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">ANNOUNCES ADDITIONAL CONSOLIDATION ACTION</font></b></h2>

<h2 style="margin:0in 0in .0001pt;page-break-after:avoid;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">&nbsp;</font></b></h2>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Bend,
Oregon, February 23, 2006 &#151; Advanced Power Technology, Inc. (NASDAQ: APTI)</font></b><font size="2" style="font-size:10.0pt;">, a leading
supplier of high performance power semiconductors used in the conditioning and
control of electrical power for both switching and RF applications, today
announced the planned closure of its facility in Montgomeryville, Pennsylvania.
The business management functions and remaining manufacturing activities
currently located in Montgomeryville will be transferred to the company&#146;s
facility in Santa Clara, California.&#160;
This action is in addition to the restructuring actions announced on
July 21, 2005 in APT&#146;s second quarter 2005 earnings release, which included the
increased use of offshore manufacturing subcontractors. This restructuring
action will lead to an additional reduction of approximately 8% of APT&#146;s total
workforce and will result in pretax charges of approximately $440,000. The
charges will include one-time severance costs of approximately $320,000 to be
settled in cash, and non-cash charges related to other exit costs of approximately
$120,000. This restructuring action is expected to result in an annual cost
savings of approximately $1.6 million.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Russell Crecraft, APT&#146;s Chief Operating
Officer commented, &#147;This has been a difficult but necessary decision to make. This
consolidation will further improve our cost structure, increase the utilization
of our other facilities, and as a result enhance our worldwide competitiveness.
We believe this action will not impact our ability to develop and introduce new
products or to grow revenues.&#160; I
anticipate this consolidation will take approximately 12 months to implement.&#148;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<h6 align="left" style="margin:0in 0in .0001pt;page-break-after:avoid;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></h6>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<h4 align="left" style="margin:0in 0in .0001pt;page-break-after:avoid;text-align:left;text-decoration:underline;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;text-decoration:none;">About Advanced Power Technology:</font></b></h4>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">APT is a leading supplier of power
semiconductors for RF, Microwave, Linear, and Switchmode Applications. APT is
headquartered in Bend, Oregon and has operations and offices in North America,
France, and China. For additional information on Advanced Power Technology, visit
its Web site at www.advancedpower.com.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">About
the Acquisition of Advanced Power Technology by Microsemi Corporation:</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Microsemi Corporation (NASDAQ:MSCC) has filed a
registration statement (including a prospectus) with the SEC for the issuance
of Microsemi shares to APT shareholders in connection with the acquisition of
APT The prospectus in that registration statement, and the other documents
Microsemi has filed with the SEC in connection with that registration statement
contain additional material information about APT, Microsemi, and the terms of
the acquisition. You may get these documents for free by visiting EDGAR on the
SEC Web Site at www.sec.gov<i><font style="font-style:italic;">.</font></i>&#160;
Alternatively, you may request Microsemi to send you the prospectus by
calling 949-221-7101.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><hr size="2" width="100%" noshade color="gray" align="left"></div>

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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Safe Harbor Statement</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Except for historical information contained
herein, the matters discussed in this news release are forward-looking
statements made pursuant to safe harbor provisions of the Private Securities
Litigation Reform Act of 1995.&#160; APT cautions
that such statements, including the metrics discussed under &#147;Business Outlook&#148;
above, are subject to a number of uncertainties and actual results may differ
materially.&#160; Factors that could affect
the Company&#146;s actual results include the ability of subcontractors to meet
their delivery commitments; unfavorable changes in industry and competitive
conditions; the Company&#146;s mix of product shipments; the accuracy of customers
forecasts; the effectiveness of the Company&#146;s efforts to control and reduce
costs; the ability of the Company to integrate newly-acquired operations
efficiently and to commercialize newly-acquired technology;&#160; and other uncertainties disclosed in the
Company&#146;s filings with the Securities and Exchange Commission including our
Form 10-K filed on March 8, 2005.&#160; The
Company assumes no obligation to update the information in this release.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

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  <td width="100%" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
  <p style="margin:0in 0in .0001pt;"><a name="TableHead"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Company
  Contact:</font></b></a></p>
  </td>
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  <td width="100%" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Greg
  M. Haugen</font></p>
  </td>
 </tr>
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  <td width="100%" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Vice
  President, Finance and</font></p>
  </td>
 </tr>
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  <td width="100%" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Administration
  and CFO</font></p>
  </td>
 </tr>
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  <td width="100%" valign="top" style="padding:0in .7pt 0in .7pt;width:100.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Tel:
  (541) 382-8028 Fax: (541) 389-1241</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

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