A Photography forum. PhotoBanter.com

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » PhotoBanter.com forum » General Photography » In The Darkroom
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Safelight bulbs??



 
 
Thread Tools Display Modes
  #11  
Old May 10th 09, 12:51 AM posted to rec.photo.darkroom
David Nebenzahl
external usenet poster
 
Posts: 1,353
Default Safelight bulbs??

On 5/9/2009 2:42 PM K W Hart spake thus:

Will the series diode work with a compact fluorescent lamp? I think either
the clipped sine wave or the decereased voltage might not let the bulb work
Although the clipped sine wave might not be a problem..


*Please* don't top post.

Won't work (well) with most CFLs. Should work OK with dimmable CFLs.

By the way, it isn't a clipped sine wave; it's a half-wave rectified
sine wave.

"Murray" wrote in message
...

A 1 amp diode in series with the bulb will reduce the wattage
(but not by half). Try a 1N4004. 400V @ 1amp. About 10c or less.
Murray

Geoffrey S. Mendelson wrote:

Richard Knoppow wrote:

AKA Beehive lamp. Get the smallest wattage compact fluorescent
lamp you can obtain and use some layers of plain writing paper
over the filter or inside against the filter. The compact
fluoresent lamps have some after glow but that should not be a
problem for a safelight. I don't think they run hot enough to
cause problems with the paper.

Thanks, and to everyone who suggested something. I went to another
lighting
store today and found a bunch of GE 15 watt bulbs (made in Hungary).I
bought
six, so I am set for a long time.

I'm still thinking about the other possibilites as I need more
safelights, and I doubt that there more Beehive lamps around
(here).



--
Save the Planet
Kill Yourself

- motto of the Church of Euthanasia (http://www.churchofeuthanasia.org/)
  #12  
Old May 21st 09, 01:40 PM posted to rec.photo.darkroom
K W Hart
external usenet poster
 
Posts: 142
Default Safelight bulbs??


"Bob AZ" wrote in message
...
The smallest incadescent bulbs that are still common here are 40 watt
bulbs.

What is everyone else doing for safelights?

Thanks in advance,

Geoff.


Geoff

bulbnam.com is your best friend for bulbs. Failing that send me
some .jpgs of what you have and I am sure I have what you need.

Bob AZ USA


Shouldn't that be bulbman.com?


  #13  
Old May 23rd 09, 03:24 PM posted to rec.photo.darkroom
Murray
external usenet poster
 
Posts: 34
Default Safelight bulbs??

Sorry, been away -late answer. The quick answer is 'NO'.
Fluoros work to a completely different system.
That's why the usual dimmers warn against using them to
control fluoros. Incandescent only. Get a fluoro specific
dimmer.
A diode actually extends the lifetime of a normal bulb.
Murray

K W Hart wrote:
Will the series diode work with a compact fluorescent lamp? I think either
the clipped sine wave or the decereased voltage might not let the bulb work
Although the clipped sine wave might not be a problem..

"Murray" wrote in message
...
A 1 amp diode in series with the bulb will reduce the wattage
(but not by half). Try a 1N4004. 400V @ 1amp. About 10c or less.
Murray

Geoffrey S. Mendelson wrote:

Richard Knoppow wrote:


AKA Beehive lamp. Get the smallest wattage compact fluorescent lamp you
can obtain and use some layers of plain writing paper over the filter or
inside against the filter. The compact fluoresent lamps have some after
glow but that should not be a problem for a safelight. I don't think they
run hot enough to cause problems with the paper.

Thanks, and to everyone who suggested something. I went to another
lighting
store today and found a bunch of GE 15 watt bulbs (made in Hungary).I
bought
six, so I am set for a long time.

I'm still thinking about the other possibilites as I need more
safelights,
and I doubt that there more Beehive lamps around (here).

Geoff.


  #14  
Old May 23rd 09, 09:28 PM posted to rec.photo.darkroom
David Nebenzahl
external usenet poster
 
Posts: 1,353
Default Safelight bulbs??

On 5/23/2009 7:24 AM Murray spake thus:

Sorry, been away -late answer. The quick answer is 'NO'.
Fluoros work to a completely different system.
That's why the usual dimmers warn against using them to
control fluoros. Incandescent only. Get a fluoro specific
dimmer.
A diode actually extends the lifetime of a normal bulb.


Actually, you got it a little backwards. No such thing as a
"fluorescent-specific" dimmer. What you *can* get are dimmable
fluorescents, that work with any dimmer.

Please don't top-post.

K W Hart wrote:
Will the series diode work with a compact fluorescent lamp? I think either
the clipped sine wave or the decereased voltage might not let the bulb work
Although the clipped sine wave might not be a problem..

"Murray" wrote in message
...
A 1 amp diode in series with the bulb will reduce the wattage
(but not by half). Try a 1N4004. 400V @ 1amp. About 10c or less.

Geoffrey S. Mendelson wrote:

Richard Knoppow wrote:

AKA Beehive lamp. Get the smallest wattage compact fluorescent lamp you
can obtain and use some layers of plain writing paper over the filter or
inside against the filter. The compact fluoresent lamps have some after
glow but that should not be a problem for a safelight. I don't think they
run hot enough to cause problems with the paper.

Thanks, and to everyone who suggested something. I went to
another lighting store today and found a bunch of GE 15 watt
bulbs (made in Hungary).I bought six, so I am set for a long
time.

I'm still thinking about the other possibilites as I need more
safelights,
and I doubt that there more Beehive lamps around (here).



--
Found--the gene that causes belief in genetic determinism
  #15  
Old May 29th 09, 07:48 AM posted to rec.photo.darkroom
Murray
external usenet poster
 
Posts: 34
Default Safelight bulbs??

I see your request not to top post - unfortunately my
program displays from the top, down, and I don't have to
scroll all the way thru countless repetitions of
previous postings to get to the actual new message.

BTW - never seen dimmable fluoros here (Australia)
only dimmers labeled as suitable for fluorescent lamps,
But since I don't look all that often you are doubtless
correct.
Murray

David Nebenzahl wrote:
On 5/23/2009 7:24 AM Murray spake thus:

Sorry, been away -late answer. The quick answer is 'NO'.
Fluoros work to a completely different system.
That's why the usual dimmers warn against using them to
control fluoros. Incandescent only. Get a fluoro specific
dimmer.
A diode actually extends the lifetime of a normal bulb.


Actually, you got it a little backwards. No such thing as a
"fluorescent-specific" dimmer. What you *can* get are dimmable
fluorescents, that work with any dimmer.

Please don't top-post.

K W Hart wrote:
Will the series diode work with a compact fluorescent lamp? I think
either the clipped sine wave or the decereased voltage might not let
the bulb work Although the clipped sine wave might not be a problem..

"Murray" wrote in message
...
A 1 amp diode in series with the bulb will reduce the wattage
(but not by half). Try a 1N4004. 400V @ 1amp. About 10c or less.

Geoffrey S. Mendelson wrote:

Richard Knoppow wrote:

AKA Beehive lamp. Get the smallest wattage compact fluorescent
lamp you can obtain and use some layers of plain writing paper
over the filter or inside against the filter. The compact
fluoresent lamps have some after glow but that should not be a
problem for a safelight. I don't think they run hot enough to
cause problems with the paper.

Thanks, and to everyone who suggested something. I went to
another lighting store today and found a bunch of GE 15 watt
bulbs (made in Hungary).I bought six, so I am set for a long
time.

I'm still thinking about the other possibilites as I need more
safelights,
and I doubt that there more Beehive lamps around (here).



  #16  
Old May 29th 09, 02:20 PM posted to rec.photo.darkroom
Jean-David Beyer
external usenet poster
 
Posts: 247
Default Safelight bulbs??

Murray wrote:
I see your request not to top post - unfortunately my
program displays from the top, down, and I don't have to
scroll all the way thru countless repetitions of
previous postings to get to the actual new message.

I am sorry things work out that way for you. There are two problems, and
only one of them is yours.

1.) When responding, the responder should delete all unnecessary material
from the post to which he is responding. Usually, retaining only the context
needed to make the response understandable is enough.

2.) When responding, either respond at the bottom or, when appropriate,
immediately after the part to which you are currently responding (when you
are responding to several parts of the original message).

--
.~. Jean-David Beyer Registered Linux User 85642.
/V\ PGP-Key: 9A2FC99A Registered Machine 241939.
/( )\ Shrewsbury, New Jersey http://counter.li.org
^^-^^ 09:15:01 up 65 days, 15:29, 3 users, load average: 4.09, 4.33, 4.31
  #17  
Old May 29th 09, 08:01 PM posted to rec.photo.darkroom
Howard Lester
external usenet poster
 
Posts: 36
Default Safelight bulbs??

"Jean-David Beyer" wrote

1.) When responding, the responder should delete all unnecessary material
from the post to which he is responding. Usually, retaining only the
context needed to make the response understandable is enough.


If only they would.... Unfortunately, so many people will not snip the
countless lines of old material, making top posting almost necessary. Those
who vehemently condemn top-posting, claiming it's "against the rules," and
citing "netiquette" and all that, should instead go after the many posters
who leave 600 lines of old, already outdated and now irrelevant material
from several different previous postings... and then respond with a
two-liner. That's even worse. Having to scroll, scroll, scroll just to get
to the next response is a real nuisance, thanks to those bottom posters who
do it badly.

Regardless of all that... ;-) I remember starting out printing b&w a
million years ago at age 12 with the aid of a Kodak safelight that probably
used 4w nightlight bulbs. The kit came with three large translucent domes of
red, green, and orange. Printing my own stuff was fun.


  #18  
Old May 30th 09, 07:11 AM posted to rec.photo.darkroom
David Nebenzahl
external usenet poster
 
Posts: 1,353
Default Safelight bulbs??

On 5/29/2009 12:01 PM Howard Lester spake thus:

"Jean-David Beyer" wrote

1.) When responding, the responder should delete all unnecessary material
from the post to which he is responding. Usually, retaining only the
context needed to make the response understandable is enough.


If only they would.... Unfortunately, so many people will not snip the
countless lines of old material, making top posting almost necessary. Those
who vehemently condemn top-posting, claiming it's "against the rules," and
citing "netiquette" and all that, should instead go after the many posters
who leave 600 lines of old, already outdated and now irrelevant material
from several different previous postings... and then respond with a
two-liner. That's even worse. Having to scroll, scroll, scroll just to get
to the next response is a real nuisance, thanks to those bottom posters who
do it badly.


That's still not any justification for top-posting.

When I advise to bottom post, that *implicitly* includes trimming the
text before posting. You'd thing that would go without saying, but as
you say, too many idjits just blindly quote the entire damn previous
message, sometimes adding only a line or two at the bottom.

Like they say, it ain't rocket science ...


--
Found--the gene that causes belief in genetic determinism
  #19  
Old May 31st 09, 01:13 AM posted to rec.photo.darkroom
Frank Pittel
external usenet poster
 
Posts: 92
Default Safelight bulbs??

Jean-David Beyer wrote:
: Murray wrote:
: I see your request not to top post - unfortunately my
: program displays from the top, down, and I don't have to
: scroll all the way thru countless repetitions of
: previous postings to get to the actual new message.
:
: I am sorry things work out that way for you. There are two problems, and
: only one of them is yours.

: 1.) When responding, the responder should delete all unnecessary material
: from the post to which he is responding. Usually, retaining only the context
: needed to make the response understandable is enough.

: 2.) When responding, either respond at the bottom or, when appropriate,
: immediately after the part to which you are currently responding (when you
: are responding to several parts of the original message).

These days I find that I prefer top posting to bottom posting. It makes threads
easier to read. Back in the days before threaded newsreaders I admit it was easier
to read a post when the reply was at the bottom.
--




-------------------
Keep working millions on welfare depend on you
  #20  
Old May 31st 09, 01:15 AM posted to rec.photo.darkroom
Frank Pittel
external usenet poster
 
Posts: 92
Default Safelight bulbs??

Rebecca Ore wrote:
: In article
: ,
: Murray wrote:

: I see your request not to top post - unfortunately my
: program displays from the top, down, and I don't have to
: scroll all the way thru countless repetitions of
: previous postings to get to the actual new message.
:

: Get a real newsreader and learn how to snip.

You may try finding a newsreader capable of threading. Having to
scroll to the bottom of a post to read the new content is a pain.
It's much easier if the new content is on the top of the post.
--




-------------------
Keep working millions on welfare depend on you
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Colored safelight *bulbs* still available? Stephan Goldstein In The Darkroom 24 December 4th 04 11:26 AM
Paterson VF safelight Ian Hodge In The Darkroom 2 August 26th 04 01:38 AM
Adorama LED safelight Richard Swanson In The Darkroom 15 June 26th 04 05:44 AM
bicycle LED as safelight Luigi de Guzman In The Darkroom 3 March 7th 04 11:19 AM
bicycle LED as safelight 10x@_telus.net In The Darkroom 5 February 27th 04 12:20 AM


All times are GMT +1. The time now is 02:30 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 PhotoBanter.com.
The comments are property of their posters.