[time-nuts] Isolated +20V for lamp supply

[timeok at timeok.it]

   Corby,

   so why did HP use a coaxial cable for the lamp power? it seems nonsense.

   Luciano

   Luciano P. S. Paramithiotti
   timeok at timeok.it
   www.timeok.it

   Da "time-nuts" time-nuts-bounces at lists.febo.com
   A time-nuts at lists.febo.com
   Cc
   Data Thu, 13 Aug 2020 10:46:01 -0700
   Oggetto [time-nuts] Isolated +20V for lamp supply
   Luciano,

   You should "Ohm out" the lamp connector shield to the chassis with
   nothing connected to the connector.
   Depending on how your optical unit is mounted there is a good chance the
   lamp assy is grounded to the chassis through the threaded stud!
   Especially so if the optical is the newer unpainted one.
   If so isolating it as you detailed does not change anything!

   Cheers,
   Corby


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