Hi Tomm, and amps people,
Thanks, the validation is very helpful. Sometimes I think about something over
and over enough and get myself lost in the forest. I also read last night
that the square wave has a pk value = avg value = rms value. This does seem to
line up with what I have measured on my scope with the 3.4v pk-pk input. ....
marching forward now, thanks!
Now that this point is solved, how about a more "amp related" question?
I'm using a 3cx800a7 as the tube. This tube has a max plate voltage of 2250
VDC. According to Tim W9QQ's article, he gets about 100 V drop on full
load. It is very easy for me to add turns in increments of 5 to the
transformer so I could easily go from 2040 to 2380. If my supply follows with
-100 V keydown it is at 2280 V under load, still above the mfgr maximum rated
voltage.
Would it be better to add the extra turn and get the higher plate voltage? I
see the AL-800 has a no load voltage of around 2600 V.
About the chopper...yes, that is exactly the plan. I've built the chopper
circuit, the handful of components, on a separate board with the idea to
redesign/remove that module later in order to incorporate a feedback loop to
control the duty cycle/frequency to adjust the output voltage; we're on the
same path.
thanks,
Paul, kg7hf
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