>
>If you do the calculations on wasted heat, this comes
>to an additional 4147 KWh per year on the Astron, and
>an additional 1175 KWh/ year on the IOTA. If you live
>in an area with 10 cents/KHh power (typical) then your
>power savings in one year will be almost $300.
We don't pay the power bill at our sites, but that is an angle I
hadn't considered.
Amusing, because I routinely design battery powered equipment, where
every milliwatt is considered.
Power factor is another issue that goes under the radar. The power
factor on those Astrons is going to be pretty bad, and if you hang
larger or better caps inside the case, it just gets worse. With a
switcher design, the power factor can easily approach 90%.
One of these days, I need to measure the astron that powers the
club's machines.
It would be interesting to know what temperature it's running at
nominally, but from calibrated thumb, I know it's pretty hot.
The club didn't want to get a switcher, because "switchers are
noisy". I've put many switchers through FCC part 15 testing, and
have yet to have anything even show up on the spectrum plots from the
switcher, either radiated or conducted.
I haven't got the harness made yet for the new machine, but when I
do, I'll be making the same measurements and more on this system.
One that I plan to do, is to set up the SA, and have a look at
exactly what noise the Iota outputs.
When I'm working on the club's machines, I have to do what they
want. On my own machines, I have no such constraints. :)
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