[Amps] Cleaned-up and expanded YC156 constant current curves

[Jim Barber]

No real bravery here... I'm only going to have around 4100V on the 
plate, so most of that chart will be undiscovered country for me. :-)

73,
Jim N7CXI

On 10/16/2010 7:13 AM, mikea wrote:
> On Fri, Oct 15, 2010 at 08:38:29PM -0700, Jim Barber wrote:
>>    For those that may find a use for them:
>>
>> I've cleaned up the area of interest to amateurs of the YC156 constant
>> current curves and posted both that and an "expanded" version:
>>
>> Entire page, with graph reconstructed in area of interest to amateurs:
>> http://www.n7cxi.com/tubeamps/yc156/YC156_curves.gif
>>
>> "Expanded" version. (cropped to reasonable area of interest)
>> http://www.n7cxi.com/tubeamps/yc156/YC156_curves_expanded.gif
>>
>> Note these are still the Eimac measurements, not mine. I did it because
>> the original scan I have isn't readable and I wanted the information for
>> my YC156 project.
>
> Woah! I hadn't seen the YC156 curves before, and I have to doff my hat to
> the people brave enough to run them -- if, that is, the data for the plate
> current curves at/above 20 Amps weren't extrapolated. 9.9 KV at 110 Amps,
> plate-to-cathode, is pretty heavy duty; I suspect it took a fast hand on
> the switch and some chart recorders.
>
> The area interesting to us hams (the ones who stay legal, anyway) sure
> doesn't use much of that sheet.
>
> Thanks, Jim, and very 73.
>