Is the heater resistance normal. Some heaters open and then heal??
DA
-----Original Message-----
From: measures <2@vc.net>
To: AMPS <amps@contesting.com>
To: <amps@contesting.com>
Date: Tuesday, October 03, 2000 3:41 PM
Subject: [AMPS] 2nd 8877 test result
>
>The second reportedly kaput 8877 (s/n LZZ 506) that was removed from an
>AL-1500 was tested today. The positive and the negative anode/grid
>leakage was under 2uA @ 8000v - so gold-sputtering is not likely. The
>heater has continuity. The anode appears to have been quite hot -- but
>obviously not hot enough to cause seal failure. Any guesses from the
>8877-mavens as to why this tube failed?
>
>end
>
>- Rich..., 805.386.3734, www.vcnet.com/measures.
>end
>
>
>--
>FAQ on WWW: http://www.contesting.com/FAQ/amps
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
>
>
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|