[AMPS] 8877 Time Delay

[William P. Osborne]

My time delay relay failed, and I turned on my 8877 keyed for
operation,
it idles at about 70 ma, and it came to 70 ma in about 30 secs and
stayed until I figured out what was up and unkeyed it, maybe 2 minutes
total. Did I damage the tube? It seems to be have low gain and be
rather
inefficient now? To get 1500 out, I need 3300 in(3300 VDC at 1 amp)
and
almost no gird current.

Thanks for your ideas Bill


-- 
William P Osborne, PhD & PE
Dean Erik Jonsson School
University of Texas-Dallas
PO BOX 830688
Richardson, TX 75083-0688
Voice 972-883-2974
Fax   972-883-2813
email wosborne@utdallas.edu

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