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In Reply to: RE: Wrong reply from me Naz... posted by Nickel Core on October 16, 2014 at 10:06:55
"My datasheets tells me I should expect over 45 mA when using 165V on the plate with -2.1 bias."
Looking at the plate curves I get about 160ma. Is that right?
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
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When I look at the I/V curves, I see about 50mAPlate Voltage = 167
Ec = -2.1V
Edits: 10/16/14
The decimal point is only showing up, for me, on the -3.0 and -5.0
That was silly of me.
tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
I mean I tested with 4 tubes. The tubes all give the same values more or less (12 - 15mA).
But WAY out of spec... like completely.
12mA @ 167V seems not a very linear region to me. I aimed for 25mA, but got a bit less bias than expected. Apparently the heater draws a bit less current then the data sheet says.
NC
~!
The Mind has No Firewall~ U.S. Army War College.
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Have Fun and Enjoy the Music
"Still Working the Problem"
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