[Amps] When did Grounded Grid begin?

[Carl]

That sounds like the amp that was at the dumpster during Nearfest in the 
80's that I dragged home in my workhorse 85 Dodge 3/4 ton van with the long 
wheelbase. Rohn tower sections fit just fine as I was doiing lots of 
installs.

Too rough to restore but lots of parts, including PS for a homebrew and the 
HK-254's in parallel fired right up for 160-20M AM. Those tantalum plates 
loved to glow almost white. Bill Eitel and Jack McCullough left there in 34 
to found Eimac and seriously push tantalum plates.

Carl
Ham since 1955


----- Original Message ----- 
From: "Colin Lamb" <k7fm at teleport.com>
To: "amps" <amps at contesting.com>
Sent: Friday, December 18, 2020 9:01 AM
Subject: [Amps] When did Grounded Grid begin?


> My 1940 Radio Engineers Handbook dated 1943, by Terman has an grounded 
> grid amplifier.  It also has a not that the design was called the 
> "inverted amplifier" and it came from Electronics, Vol 13, Page 14, July 
> 1940.
>
> There is a circuit in my 1937 Radio Handbook that has the meter to measure 
> plate current in the cathode of a parallel HK-254 amplifier.
>
> So these circuits may be around long before Orr.
>
> Colin Lamb  K7FM
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps 


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