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<DIV><FONT face=Arial size=2>Listers:</FONT></DIV>
<DIV><FONT face=Arial size=2>Stumbled on this by accident - go to <A
href="http://www.pat2pdf.org">www.pat2pdf.org</A> and fetch patent 4300431
(about 600K download).</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>It may be the patent for the mystery
epoxy-encapsulated P-V converter module in the ARP Avatar. The author (DeRocco)
is one of the guys who designed the Quadra phaser . The schematic includes
the ARP voltage-controlled Norton amp integrator, which is also used
in the 4072 and 4075 filters. ARP is not mentioned anywhere, but it appears
there is a connection.</FONT></DIV>
<DIV><FONT face=Arial size=2>Cheers, Mike</FONT></DIV></BODY></HTML>