<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
  <title></title>
</head>
<body bgcolor="#ffffff" text="#000000">
Jerry wrote:
<blockquote
 cite="mid3.0.5.32.20070117220950.00e99298@mail.optonline.net"
 type="cite">
  <pre wrap="">
Hi
        How do they drive the gates? Push-Pull?

                de Jerry NO2T   </pre>
</blockquote>
<br>
It looks like they drive the gates through a transformer. Here is an
expanded part of that schematic :<br>
<br>
<img alt="" src="cid:part1.01090806.09080209@weaksignals.com"
 height="747" width="821"><br>
<br>
73  Alberto  I2PHD<br>
<br>
<br>
</body>
</html>