RADIOTEL@....... on 11/08/99 09:05:37 PM

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Subject:  Re: Copper plate damping



Hi Marchal
I have tried resistive damping but with limited success.  I am currently
using copper plate damping with a 1/4x4"x2" copper plate on my Lehman with a
magnet on each side of the plate.  This arrangement has thus far proven to be
the easiest for me in obtaining adjustments, etc.  However, I do plan to
experiment with resistive damping in the future.
Lots of luck in your efforts - Let us know which method worked for you.
Jim Allen
Cerritos, Calif.

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One thing you will find about resistive damping is that if the coupling between
      the coil and the magnet is insufficient you will be unable to get enough
      damping even with the coil shorted. If this situation occurs you should
      try and improve the coupling as it will increase the sensistivity of your
      instrument also.



Jim Hannon




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