N:Vision CFL's

["Robert Green" <ROBERT_GREEN1963@xxxxxxxxx>]

Some very interesting discussion of the very same topics we covered here at:

http://en.wikipedia.org/wiki/Talk:Compact_fluorescent_lamp

"Norway, which generates over 99% of its electrical power by hydroelectric
[12]would actually see an increase in mercury emissions if they move to
CFLs."

It seems that the cost equations are still being worked on!

There are lots of competing claims, the most interesting among them being
CFL equivalency ratings are overblown.  A poster to the discussion at
wikipedia says that his tests show that CFL's claimed to be equivalent to a
100W lightbulb are actually noticeably dimmer.  This is something I mean to
test since I "scored" a number of the N-Vision CFL's at Home Depot tonight:

762148549236.....9R4023 floodlight.....$7.47
762148582328.....23W 2Pk..................$7.97
762148581925.....19W 2Pk..................$7.97
762148581444.....14W Mini 4Pk...........$7.97
762148588429.....42W Bulb.................$9.97

Even though it's bigger than the bulb it's going to replace (and that's an
issue) the 42W does indeed "snap on" to near full brightness much faster
than the older bulb, a Lights of America triaxial bulb.  The 42W bulb comes
with two plastic clips that are not mentioned anywhere on the package.  The
look like they could be used the way some lampshades have a wire clamp for
the bulb that supports the shade, but it's hard to tell.

The Nvoice in-store display had a staggering variety.  Some of the warnings
on the bulbs are new to me (do not use near marine radios or in emergency
exit signs).  I'll have to dig out my Gossen Luna Pro lightmeter so I can
make some meaningful measurement if the CHA research committee stipulates it
to be accurate enough for the purpose!  (-:

(Some more preliminary results - I guess I am not going to bed tonight, but
playing with lightbulbs instead!)

The N:Vision bulbs work in my porch light, a fixture controlled by a generic
X-10 wall switch.  No other CFL has been able to do that without flashing at
about 4 on/off cycles per second.  I detect a slight pulsing but it's my
wife, who's TDY, who will decide if that's objectionable.

The Monterey detects no "signal sucker" effects from the bulbs when used in
a table lamp, but I've had to change the way I test due to the strong
signals emitted by the XTB.  I locate an outlet that's far enough away from
the lamp and the test transmitter (both plugged into the same outlet strip)
to register under 4 volts.  Then I swap out bulbs, looking for any change in
readings. There were none.  Noise was reported to be about  10-12 millivolts
in both bands that are tested.  That's quite acceptable.

The light from the bulb appears much dimmer than the 60W incandescent it
replaced, but that's understandable because it's 14W and that's equivalent
to a 40W incandescent, IIRC.  Hard to describe the difference in lighting
quality but the front door cam view has changed.  I'll probably test the 19W
in that fixture next because I want good lighting for the front door cams.

I've found that the bulbs are dimmable - sort of - even though that use is
disclaimed.  I'm amazed at how low they will dim - just a ghostly glow - but
there's a dual pronged problem of both flicker and noise.  I'm going to run
one for a few hundred hours in a dimmed mode to see if it causes early
failure.  I have found that there are dim levels that minimize the buzz and
flicker.  I suspect I'm seeing and hearing the beat frequency oscillation
that Jeff discussed earlier at the levels that flicker or hum badly.

I hear a slight buzz on the front door audio that is not present with an
incandescent but I think that will end up being a cable re-routing issue.

The spotlight is an interesting beast as well, and it's very odd shape
actually fits into one of the table lamps that so far has rejected all but
the tiniest of CFL bulbs.  That meant that CFL's were unusable because of
the heavy lampshade.  The light's not even enough to use as is in that lamp,
but I can see other interesting possibilities since the reflector diffuses
the harsh shadows some other lamps have produced.

On the whole, my impression is that these will be a great asset to X-10
users as they appear to be the most X-10 friendly CFL's I've run across to
date.  The price is entirely comparable to Target and War-Mart.  Thanks for
the heads up, Marc.  CHA at its best!

OK - last report.  I started this message at 11PM and now it's 5AM.  The
police just stopped by because the neighbors called and said they thought
someone was stealing my porch lightbulb or trying to break in!  Now it's
time to get an hour or two of sleep.

Now for the bad news! The new N:Vision bulb will NOT turn off remotely and I
noticed the wall switch was humming loudly, even undimmed.  <sigh>  The 14W
runs cheaply enough that I could afford to run it 24/7 and it would still
cost less than an incandescent, but that's not what I wanted.  I don't want
to go after that switch, either, because it's on an outside wall and it
won't stand any more tugging on the sixty year old wires without serious
risk of breaking. That means digging out the wires, replastering,
repainting, yada, yada, yada and that's not going to be happening,
especially around tax time!  I'll bet there's no neutral at that switch.
Back to incandescents or forward to forever-burning CFLs.  Or even WORSE,
*manual* control of the light!!!!!!

Tomorrow I will trace the circuit to see if putting an XTB as close to the
porchlight as possible on that circuit leg will "blast" through whatever's
blocking the signal, mostly for curiosity's sake.  The porchlights are a
really bizarre run that goes up to the attic, across and down at the front
and IIRC, there may be no other outlets or lights on that circuit to easily
tap into.

Nuts!  )-:

On the plus side, near-instant on, good cold weather performance, limited
dimming, no X-10 EMI and no X-10 signal sucking are nothing to sneeze at!

--
Bobby G.