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[Amps] TL922A and AL80A

To: <amps@contesting.com>
Subject: [Amps] TL922A and AL80A
From: 2 at vc.net (2)
Date: Fri Mar 21 07:07:11 2003
Tom said:
 "You can find this discussed in Care and Feeding of Power Grid Tubes by
Varian, ..."

Rich replied:
"**  Not in my copy of "Care and Feeding ..."

Rich, it is in my copy.  Page 68 of the third printing,1978, under 4.3.2
What Makes a Tube Linear.  Seems to me that was one of the points of the
book.

Colin  K7FM
-------------------
Rich's reply:
**  "Care and Feeding of Power Grid Tubes", p. 68, 4.3.2, "What Makes a 
Tube Linear" refers to p.69, "Ideal grid-plate (anode) transfer curve for 
class AB operation".  After looking at the curves for a 3-500Z, it seems 
to me that the 3-500Z does not have ideal transfer characteristics 
because its emission begins to limit above the 1.2A-peak curve (c.400mA 
avg) due to the emissive limit of its 75w filament.    

Colin -- life would be easier on the AMPS group if you enabled the 
auto-attribution markers option in your e-mailler app.

-  R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, 
www.vcnet.com/measures.  
end

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