wrote:
On Fri, 28 Sep 2018 21:11:39 -0400, John H.
wrote:

On Fri, 28 Sep 2018 20:44:43 -0400, wrote:

On Fri, 28 Sep 2018 17:31:26 -0400, John H.
wrote:

On Fri, 28 Sep 2018 21:19:50 -0000 (UTC), Bill wrote:

John H. wrote:
On Fri, 28 Sep 2018 20:08:34 -0000 (UTC), Bill wrote:

John H. wrote:
On Fri, 28 Sep 2018 08:12:14 -0700 (PDT), Tim wrote:


9:03 AMJohn H
- show quoted text -
Good to see you understood his whine. I'm still not sure what he means
by 'same bluegrass festival
on different sites'. Maybe because the music is similar at each festival?

It gets to where the music takes second place to seeing and having fun
with good friends.

.......

At least you?re getting fresh air, exercise, and sunshine.
Btw, I rode my Guzzi 400 mi this week...so far. Might get another 200
mi in before Monday.

I think I'll take mine for a ride tomorrow. I finished installing the new
converter, and now I'm
tired. Climbing in and out of that thing is a bitch.


Dc to AC is an Inverter.

Agreed. My converter converts 120vac to 12vdc.


The one I replaced in my Palomino camper did that also was called an
inverter.

https://www.diffen.com/difference/Converter_vs_Inverter

Maybe they were just calling it the wrong name.

Weigh it ;-)
If it does not have a big transformer in it is an inverter.
Inverters turn whatever you feed them into a high frequency square
wave (20kz or more) them get the voltage they want with a tiny little
transformer.
That can be up or down.

So the site is wrong? Mine does not have a big transformer as it is not
expected to transform 120v
to 240v or vice-versa. The item I just installed is a converter. It
converts 12vdc to 120vac.

Your converter is pretty much like the "power supply" in your PC. In
fact a PC power supply can give you 12v at 20a or more if you have a
big one. (I use one for a bench supply)

Watch the video.

https://www.arrow.com/en/research-an...vs-transformer

Converters also have only job: convert AC power to DC power. But the
word “converter� is very
generic, and you may often see it being used incorrectly. For example,
if someone says “DC to AC
converter,� that makes logical sense even though the correct terminology
is “DC to AC inverter.� The
same argument can be made by saying “DC to DC converters.� AC to DC
converters are also regularly
referred to as power supplies.

Inverters ultimately have only one job – take in DC current and turn it
into AC current. In theory,
this is very easy, because a simple switch and some creative wiring can
give you an alternating
square wave operating at the frequency that you flip the switch.

But in reality, square waves are very damaging to nearly all modern
electronics that rely on AC
power. So the real question is: How do you take AC power and turn it
into something useable? The
answer is, you can filter the square wave using precisely selected
inductors and capacitors to
create a sine wave, or at least something close to a sine wave.

Oftentimes, inverters will also feature a transformer. This is done so
that the AC voltage out can
actually be different from the DC voltage in, depending on the number of
coils on the primary and
secondary winding.

Maybe that will help clear it up.



There is also a lot of arguing about nomenclature (converter,
inverter, power supply etc) and I have no opinion. "Inverter" does
imply an A/C output tho whether it is pure sine wave, modified sine
wave or just a square wave. The rest of them seem to be the same
thing.

I disagree with one thing in particular. "Modern electronics" don't
really "use" AC at all. (for the last decade or two) If it has a
switching power supply the first thing that happens is the input is
changed to DC at 1.4x the nominal line voltage (the peak to peak) and
then it is chopped to a high frequency. (I bet they would work as well
on 100-250vdc) This chopped DC is changed to the desired voltage with
a small transformer. The input can be the noisiest, most unstable
thing you throw at it and the supply cleans it right up. The noise
filter on your PC, TV or whatever is to keep the noise IN, not out.


At System Industries, one of our biggest problems on the controllers was
the Pass
Transistor power supplies passing any input line glitch through.
Especially bad in the Rockies as they had lots of terrible lighting storms
and little damping on the power lines. I tried to go to,a,much cheaper,
much better switcher, and was told by the Veep on manufacturing he had
ordered a thousand of the old supplies. Who the original manufacturer was
telling they were dropping. 4x TS price of the switchers.