25% is already pretty conservative. It -would- be interesting to see a real
test case. The data may already be out there somewhere.
Jeff/KA5MIR
On Tuesday 14 November 2006 23:27, kenw2dtc wrote:
> Wow, I had the computer off for a bunch of hours and when I logged back in
> there were a number of very informative answers. I thank everyone for the
> information, and it's causing me to do more reading on Class "A".
>
> Looks like a number of responses were centered around 6000 watts based on
> 25% efficiency. (1500 watts / .25).
>
> Now lets say that one wanted to keep this amp chugging during the summer
> with possible line voltage sags, is it reasonable to assume that a tube
> with even more dissipation would be needed to maintain the desired output?
>
> In the same vein, as I look at some of the tube specs, the linear portion
> is not at the full range of plate current, it appears to be especially
> non-linear at the low end. Does this mean that it may require a much
> larger tube than one with 6000 watts of dissipation because the class "A"
> bias setting would have to be set near the middle of the curve where the
> current is higher?
>
> 73,
>
> Ken W2DTC
>
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