Re: Fluorescent lights (Was: Full immersion emulation)

[Ed via cctalk]

have no idea...  wife bought them at  home depot  they were  not cheap but 
just twisted ino fixture and  done.
I am going to  do dame in some of the  rooms at  SMECC  museum too.
 
I like a simple  fix and this was!
 
 
 
In a message dated 3/7/2017 12:43:24 P.M. US Mountain Standard Time,  
cctalk@classiccmp.org writes:



On 3/7/2017 11:04 AM, Ed via cctalk wrote:
> we  had   tubes  with LEDs in them... took oldflorescent  tube out of
> fixture.. twisted in the   thing  with the  LEDs in it  that hacked  
wight  into
> the lighting  fixture and  done!  Ed#
>   
I've asked about those and have no sources of  such.  They do have to 
work thru ballasts and deal with starter  issues that are no longer 
relevant, unless you remove and rewire the  ballasts / starters out of 
the old fixtures.

The things I've seen  are the same form factor as a 4' dual tube dual 40 
watt fixture with 110  in and light out.  Pull and toss an old dual tube 
fixture and replace  with new LED.  But I've not seen the tube solution.  
I've got a  couple of spots the tube thing would be desirable, but no 
source of  such.  If you do have a source I'd be  interested.

thanks
Jim

Re: Fluorescent lights (Was: Full immersion emulation)

[Jon Elson via cctalk]

On 03/07/2017 01:04 PM, Ed via cctalk wrote:

we had   tubes  with LEDs in them... took old   florescent  tube out of
fixture.. twisted in the  thing  with the  LEDs in it  that hacked  wight into
the lighting  fixture and  done! Ed#

We had hideous 30-year old magnetic ballasts in the 
kitchen.  A 2-tube 48" fixture consumed 103 W.
So, I really wanted to get those ballasts out of the 
system.  The new system with commercial LED lighting power 
supply uses 21 W.  The light output seems to be about the same.


Jon

RE: Fluorescent lights (Was: Full immersion emulation)

[Dave Wade G4UGM via cctalk]

> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of jim
> stephens via cctalk
> Sent: 07 March 2017 19:43
> To: General Discussion: On-Topic and Off-Topic Posts
> <cctalk@classiccmp.org>
> Subject: Re: Fluorescent lights (Was: Full immersion emulation)
> 
> 
> 
> On 3/7/2017 11:04 AM, Ed via cctalk wrote:
> > we had   tubes  with LEDs in them... took old   florescent  tube out of
> > fixture.. twisted in the  thing  with the  LEDs in it  that hacked
> > wight into the lighting  fixture and  done! Ed#
> >
> I've asked about those and have no sources of such.  They do have to work
> thru ballasts and deal with starter issues that are no longer relevant,
unless
> you remove and rewire the ballasts / starters out of the old fixtur
> 
> The things I've seen are the same form factor as a 4' dual tube dual 40
watt
> fixture with 110 in and light out.  Pull and toss an old dual tube fixture
and
> replace with new LED.  But I've not seen the tube solution.
> I've got a couple of spots the tube thing would be desirable, but no
source of
> such.  If you do have a source I'd be interested.
> 
> thanks
> Jim

I have just replaced two tubes in my shack with LED tubes. They came with
"dummy" starters, went straight into the existing fittings.
I am on 240v rather than 110v but GE seems to make similar devices for the
USA...

Dave

Re: Fluorescent lights (Was: Full immersion emulation)

[jim stephens via cctalk]

On 3/7/2017 11:04 AM, Ed via cctalk wrote:

we had   tubes  with LEDs in them... took old   florescent  tube out of
fixture.. twisted in the  thing  with the  LEDs in it  that hacked  wight into
the lighting  fixture and  done! Ed#
  
I've asked about those and have no sources of such.  They do have to 
work thru ballasts and deal with starter issues that are no longer 
relevant, unless you remove and rewire the ballasts / starters out of 
the old fixtures.


The things I've seen are the same form factor as a 4' dual tube dual 40 
watt fixture with 110 in and light out.  Pull and toss an old dual tube 
fixture and replace with new LED.  But I've not seen the tube solution.  
I've got a couple of spots the tube thing would be desirable, but no 
source of such.  If you do have a source I'd be interested.


thanks
Jim

Re: Fluorescent lights (Was: Full immersion emulation)

[Ed via cctalk]

we had   tubes  with LEDs in them... took old   florescent  tube out of 
fixture.. twisted in the  thing  with the  LEDs in it  that hacked  wight into 
the lighting  fixture and  done! Ed#
 
 
 
 
In a message dated 3/7/2017 10:23:36 A.M. US Mountain Standard Time,  
cctalk@classiccmp.org writes:

> From: Jon Elson

> I have converted our  kitchen to LEDs. 

Yeah, I've already done ours, too. Our fixtures are  let into the ceiling, 
so
just replacing them with LED ones wasn't an  option; I couldn't find ones 
that
took the same opening. But I bought an  under-ceiling fluorescent-sized LED
fixture, made by a company called  Hampton Bay, to replace an under-ceiling
fixture in another room, and I  noticed it was just enough smaller than the
ones in the kitchen. So I  gutted the kitchen fixtures, took Hampton Bay
units, discarded the plastic  light-shields, and with a bit of trimming,
convinced the base plates (which  holds the power supply, LEDs, etc) to fit
into the existing  fixtures.

I'm now currently wanting to do my shop, and I'm looking for  something 
which
is a bit less work - tubes that I simply plug in, or  something like that, 
are
what I'm looking for!

Noel

Re: Fluorescent lights (Was: Full immersion emulation)

[Noel Chiappa via cctalk]

> From: Jon Elson

> I have converted our kitchen to LEDs. 

Yeah, I've already done ours, too. Our fixtures are let into the ceiling, so
just replacing them with LED ones wasn't an option; I couldn't find ones that
took the same opening. But I bought an under-ceiling fluorescent-sized LED
fixture, made by a company called Hampton Bay, to replace an under-ceiling
fixture in another room, and I noticed it was just enough smaller than the
ones in the kitchen. So I gutted the kitchen fixtures, took Hampton Bay
units, discarded the plastic light-shields, and with a bit of trimming,
convinced the base plates (which holds the power supply, LEDs, etc) to fit
into the existing fixtures.

I'm now currently wanting to do my shop, and I'm looking for something which
is a bit less work - tubes that I simply plug in, or something like that, are
what I'm looking for!

Noel

Re: Fluorescent lights (Was: Full immersion emulation)

[Jon Elson via cctalk]

On 03/06/2017 08:57 PM, Eric Christopherson via cctalk wrote:


I assume the kind of LEDs under discussion doesn't have the problem of
overheating that some LEDs have when placed in enclosures without heat
sinks, right?

The 48" LED fluorescent retrofits have a lot of surface 
area, so they probably do OK.  The retrofits I made are
electrically isolated from the line, and have 88 square 
inches of copper PC board material to act as a heat sink.
They still run quite warm, although when on, the optical 
output of these things is stronger than full sunlight, so 
they appear to be REALLY warm on the skin, so that fools 
you.  You have to test the temperature just one second after 
they are turned off to get a better idea of the real 
temperature.


I'm running about 19 W total into 20 1W LEDs, replacing TWO 
48" tubes.  Previous input to a 2-lamp ancient ballast was 
103 W, the LED supply draws 21 W, as measured with a real 
power meter.


Jon

Re: Fluorescent lights (Was: Full immersion emulation)

[Eric Christopherson via cctalk]

On Mon, Mar 06, 2017, Paul Koning via cctalk wrote:
> 
> > On Mar 6, 2017, at 2:11 PM, Noel Chiappa via cctalk  
> > wrote:
> > 
> >> From: Paul Koning
> > 
>  terrible fluorescent lighting.
> > 
> >>> There's another kind? :-)
> > 
> >> in fact you can get LEDs that fit in fluorescent fixtures, either as is
> > 
> > I've been looking for LED replacements, but I haven't seen them; I'd have
> > thought that that would be a pretty popular item, but I haven't seen them in
> > any local stores. Are they only available as an online option?
> 
> The Home Depot website lists both "remove ballast" and "keep the ballast" 
> flavors, in stock at my local store.
> 
> A much larger selection can be found online.  I've used 1000bulbs.com in the 
> past, good people.
> 
>   paul
> 

I assume the kind of LEDs under discussion doesn't have the problem of
overheating that some LEDs have when placed in enclosures without heat
sinks, right?

-- 
Eric Christopherson

Re: Fluorescent lights (Was: Full immersion emulation)

[Jon Elson via cctalk]

On 03/06/2017 01:11 PM, Noel Chiappa via cctalk wrote:

 > in fact you can get LEDs that fit in fluorescent fixtures, either as is

I've been looking for LED replacements, but I haven't seen them; I'd have
thought that that would be a pretty popular item, but I haven't seen them in
any local stores. Are they only available as an online option?



I have converted our kitchen to LEDs.  See :
http://pico-systems.com/Lighting.html

Not exactly cheap (the LED lighting power supplies are 
pretty expensive) but they are working quite well.


Jon

Re: Fluorescent lights (Was: Full immersion emulation)

[Peter Corlett via cctalk]

On Mon, Mar 06, 2017 at 02:11:45PM -0500, Noel Chiappa via cctalk wrote:
[...]
> I've been looking for LED replacements, but I haven't seen them; I'd have
> thought that that would be a pretty popular item, but I haven't seen them in
> any local stores. Are they only available as an online option?

I've seen people I trust on such matters rave about Osram SubstiTUBE:

https://www.osram.com/osram_com/products/led-technology/lamps/led-tubes/

Whether they're online-only mainly comes down to how good your local shops are.

Re: Fluorescent lights (Was: Full immersion emulation)

[Chuck Guzis via cctalk]

On 03/06/2017 11:23 AM, Richard Cini via cctalk wrote:

> I bought 4x2 (4', 2 bulb) replacement LED fixtures on Amazon to swap
> out some of the fluorescent fixtures in my shop. You can get 3 color
> temperatures (I got 2700k I think). Hard-wired, but an easy install
> and the light is very bright. $53/per.

I've got the T8 lights in my shop running from solid-state (GE) ballasts
that I picked up perhaps 20 years ago.   When I get to the bottom of the
box, I'll probably replace the fixtures with LED ones, so any
information like this is good to know.

FWIW, they're 4-lamp fixtures (2 ballast).   Replacements needn't fit
the original form factor--I suspect that there are smaller, more compact
LED fixtures with equivalent light output.

--Chuck

Re: Fluorescent lights (Was: Full immersion emulation)

[Richard Cini via cctalk]

I bought 4x2 (4', 2 bulb) replacement LED fixtures on Amazon to swap out some 
of the fluorescent fixtures in my shop. You can get 3 color temperatures (I got 
2700k I think). Hard-wired, but an easy install and the light is very bright. 
$53/per. 

Rich

Sent from my iPhone

On Mar 6, 2017, at 2:11 PM, Noel Chiappa via cctalk  
wrote:

>> From: Paul Koning
> 
 terrible fluorescent lighting.
> 
>>> There's another kind? :-)
> 
>> in fact you can get LEDs that fit in fluorescent fixtures, either as is
> 
> I've been looking for LED replacements, but I haven't seen them; I'd have
> thought that that would be a pretty popular item, but I haven't seen them in
> any local stores. Are they only available as an online option?
> 
>> or (probably a better choice) with the ballast removed.
> 
> Definitely - ballasts are such a pain. Actually, let me be more accurate: the
> ballasts in 4' (40W) lights (where they put the two bulbs in series) are a
> pain.
> 
> The new ballasts for the 8' lights (a couple of decades back, in the US,
> regulations mandated a change) are actually a delight; you have to re-wire old
> fixtures a bit to install them (since the new ones no longer run the lights in
> series), but the upside is that 8' bulbs now either work - or don't.
> 
> This is distinctly unlike the 4' ones, where bulb X will work when paired with
> bulb Y, but not when paired with bulb Z. (Because 40W bulbs are wired in
> series pairs, and as they age, their characteristics change.)
> 
> I don't suppose there are ballasts for 40W bulbs that _don't_ wire them in
> series?
> 
>Noel

Re: Fluorescent lights (Was: Full immersion emulation)

[Paul Koning via cctalk]

> On Mar 6, 2017, at 2:11 PM, Noel Chiappa via cctalk  
> wrote:
> 
>> From: Paul Koning
> 
 terrible fluorescent lighting.
> 
>>> There's another kind? :-)
> 
>> in fact you can get LEDs that fit in fluorescent fixtures, either as is
> 
> I've been looking for LED replacements, but I haven't seen them; I'd have
> thought that that would be a pretty popular item, but I haven't seen them in
> any local stores. Are they only available as an online option?

The Home Depot website lists both "remove ballast" and "keep the ballast" 
flavors, in stock at my local store.

A much larger selection can be found online.  I've used 1000bulbs.com in the 
past, good people.

paul

RE: Fluorescent lights (Was: Full immersion emulation)

[Bill Gunshannon via cctalk]

I have replaced all of the incandescent and CFL bulbs in my house with LED 
bulbs.
I have 2 full boxes of fluorescent tubes but by the time I have used them up 
(not
as long as some folks might think) LED replacements should be readily available
and priced well enough to change all of them, too.  Oh yeah, I have also 
replaced
all my  outdoor Christmas lights with LED as well.  :-)

bill


From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Noel Chiappa via 
cctalk [cctalk@classiccmp.org]
Sent: Monday, March 6, 2017 2:11 PM
To: cctalk@classiccmp.org
Cc: j...@mercury.lcs.mit.edu
Subject: Re: Fluorescent lights (Was: Full immersion emulation)

> From: Paul Koning

>>> terrible fluorescent lighting.

>> There's another kind? :-)

> in fact you can get LEDs that fit in fluorescent fixtures, either as is

I've been looking for LED replacements, but I haven't seen them; I'd have
thought that that would be a pretty popular item, but I haven't seen them in
any local stores. Are they only available as an online option?

> or (probably a better choice) with the ballast removed.

Definitely - ballasts are such a pain. Actually, let me be more accurate: the
ballasts in 4' (40W) lights (where they put the two bulbs in series) are a
pain.

The new ballasts for the 8' lights (a couple of decades back, in the US,
regulations mandated a change) are actually a delight; you have to re-wire old
fixtures a bit to install them (since the new ones no longer run the lights in
series), but the upside is that 8' bulbs now either work - or don't.

This is distinctly unlike the 4' ones, where bulb X will work when paired with
bulb Y, but not when paired with bulb Z. (Because 40W bulbs are wired in
series pairs, and as they age, their characteristics change.)

I don't suppose there are ballasts for 40W bulbs that _don't_ wire them in
series?

Noel

Re: Fluorescent lights (Was: Full immersion emulation)

[Noel Chiappa via cctalk]

> From: Paul Koning

>>> terrible fluorescent lighting.

>> There's another kind? :-)

> in fact you can get LEDs that fit in fluorescent fixtures, either as is

I've been looking for LED replacements, but I haven't seen them; I'd have
thought that that would be a pretty popular item, but I haven't seen them in
any local stores. Are they only available as an online option?

> or (probably a better choice) with the ballast removed.

Definitely - ballasts are such a pain. Actually, let me be more accurate: the
ballasts in 4' (40W) lights (where they put the two bulbs in series) are a
pain.

The new ballasts for the 8' lights (a couple of decades back, in the US,
regulations mandated a change) are actually a delight; you have to re-wire old
fixtures a bit to install them (since the new ones no longer run the lights in
series), but the upside is that 8' bulbs now either work - or don't.

This is distinctly unlike the 4' ones, where bulb X will work when paired with
bulb Y, but not when paired with bulb Z. (Because 40W bulbs are wired in
series pairs, and as they age, their characteristics change.)

I don't suppose there are ballasts for 40W bulbs that _don't_ wire them in
series?

Noel