Manfred,
I'd welcome your opinion on the design. I call it "good" because when it
works, it seems to work well, and it's quite compact. I am still learning
amplifier design, and I'm not competent to identify design flaws
like inadequate heat sink size and airflow.
Mine looks to be this design:
http://www.kg9e.net/projects/hfpacker/
It may be telling that K5OOR has resigned the amp since my kit was
built. The current one being sold appears to be physically larger than mine.
Documentation:
https://storage.googleapis.com/wzukusers/user-17403798/documents/58c313c4618a4lexQCfw/Construction%20Manual%20miniHFPA%20with%20schematics%20and%20BOM%202017%2003%2010.pdf
73,
Cathy
N5WVR
--------------------------------------------
Manfred Mornhinweg <manfred@ludens.cl> wrote:
Cathy, that "good" little amp that eats MOSFETs for breakfast, lunch and
dinner cannot really be "good". It must have a serious design flaw, to
behave like that. So it's a BAD amplifier, not a good one. The IRF510 is
a small, rather low power MOSFET, with a pretty good gate voltage range,
and it's no rocket science at all to make an amp with it that works
without blowing up such MOSFETs.
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