I picked one of these up at Lowes to temporarily power some incandescent
lights. With a couple of hundred watts of load I notice that the lights
flicker slightly but annoyingly. For a normal generator I'd let it slide,
but I thought the point of these inverter designs was "clean" power. Is
slight flickering typical of the iX2000 or did I get a bad one?
Mark snipped-for-privacy@Yahoo.com (ransley) writes:
| On Jun 20, 3:51 am, ddl@danlan.*com (Dan Lanciani) wrote:
| > I picked one of these up at Lowes to temporarily power some incandescent
| > lights. With a couple of hundred watts of load I notice that the light| s
| > flicker slightly but annoyingly. For a normal generator I'd let it sli| de,
| > but I thought the point of these inverter designs was "clean" power. I| s
| > slight flickering typical of the iX2000 or did I get a bad one?
| > Dan Lanci| ani
| > ddl@danla| n.*com
| Did you check the voltage it puts out loaded, is that unit like the
| Honda inverter that varies rpm to keep voltage constant. On constant
| speed units to get 120v 60hz you need 3600 rpm .
It is basically a clone of the Honda, but the equavalent of econo-throttle
was off. The voltage was something reasonable, 118V I think. I actually
have a smaller Honda (1000VA) but I never used it for lights. I suppose I
could take it to the site for comparison. I was tempted to order the larger
Honda, but the Generac was available and in stock on a direct line from
where I live to where I needed it. :)
I use a light bulb to load UPCs that I'm testing, and noticed that the
bulb brightness is very sensitive to the voltage and width of the
square output pulse. The bulb responds to changes that are barely
visible on the scope.
email@example.com (Jim Wilkins) writes:
| > ...
| > that shouldnt affect an -incandescent- .
| > at 60hz,the filament will average out the waveform.
| > Jim Yanik
| I use a light bulb to load UPCs that I'm testing, and noticed that the
| bulb brightness is very sensitive to the voltage and width of the
| square output pulse. The bulb responds to changes that are barely
| visible on the scope.
Indeed. I once got a Best FERRUPS online UPS because everybody told me
the quality was spectacular. The first thing I tried was a 100W light
bulb, and interrupting mains power caused something way beyond a flicker,
almost to the point of a double blink. I was disappointed, but then the
same everybody told me that lights were very sensitive and I shouldn't
worry about it. If this is the same kind of thing I don't want to spend
a lot of time trying to "fix" it. In particular, I don't want to end
up with the maufacturer swapping a "reconditioned" unit (that behaves
the same but is all beat up) for my nice new one because they don't want
to admit that the lights flicker...
a square wave is MUCH different than a quasi-sinewave output.
(like the OP was discussing)
an entirely different matter.
your PC doesn't mind it because the first thing the PS does is rectify and
filter the input into DC,for the switching circuitry.
--Next time you buy a genny (and there will be a next time!)
research the brand, re: service and spare parts. I bought a used RV with an
ailing Generac and I found it was *impossible* to get a response from
Generac. Best I've been able to determine: the company's been absorbed into
another company and new co doesn't give a shit. Also there's no place in
*my* neck of the woods that will service it. Get a better brand next time;
what's that quote... '..the bitterness of poor quality remains long after
the sweetness of low price is forgotten'. Heh.
"Steamboat Ed" Haas : Didja see my stuff
Hacking the Trailing Edge! : at 2010 Maker Faire??
By "stepped" you mean a square wave, no?
But even if the inverter outputs a square wave, that still shouldn't
cause flickering with incandescent lights. I'm going to guess that
you're going to need a signal with a frequency down around 10 Hz or less
to see that. Dunno what that could be.
OP: you don't happen to have access to a 'scope or a signal analyzer, do
you? Maybe know someone who owns one? It'd be interesting to connect a
scope and see what the waveform actually looks like.
The fashion in killing has an insouciant, flirty style this spring,
with the flaunting of well-defined muscle, wrapped in flags.
No, it's all choppy. Taking a bunch of little square waves to make up
one complete cycle. On a scope it looks like steps going up and then
down. The more steps the closer it gets to a sine wave. Not just one
up and one down like a square wave. It sounds good in theory, but
unless it's really a good one, it isn't worth the money.
I've run a few different computers and other electronic equipment off my
plain Jane generator (alternator) without any problems. No electronics,
just a cheap generator (alternator) at about 60 Hz. Most electronic
equipment is marked for 50 to 60 Hz showing that it isn't as sensitive
to frequency as one might think.
On Jun 20, 4:51 am, ddl@danlan.*com (Dan Lanciani) wrote:
Before you adjust the Governor, or change anything...............You
might want to put more of a load on it. A couple hundred watts isn't
much. Mine ( 3500 watt) did the same thing with only a couple lights
on it. I added more load and the flicker went away.
ddl@danlan.*com (Dan Lanciani) wrote in
return it ASAP. You bought it to run some simple lights and it didn't do
the job -- so the various reasons why it failed don't help your lights.
Get another one and if it fails get a different brand.
just saying what i'd do is all.. best of luck
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