[R-390] PTO -COSMOS query

Pete Williiams jupete at internode.on.net
Tue Feb 16 20:44:14 EST 2010


List....
Checking end point  and linearity on a COSMOS is time  consuming  and
everyone I've done needs the one turn off the  end point  coil.--- until
now.
The last one I've just done was very recalcitrant  and I opted to remove one
of the 10pf N300 caps  across the main coil to bring it into line. One turn
didn't make the  appropriate distance. 
There 'appears' to be no ill effects --- endpoint adjust OK and easily
achieved linearity.
I realize that clever engineers spent time and money designing/proving their
product but what ill effects might  accrue from this heresy and deletion !
I would  expect temperature stability might suffer at extremes both + and - 
Comments/dissertations welcomed .
Pete VK3IZ

 Do not think what you want to think until you know what you want to know



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