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Author Topic: Why Can I NOT use an energy saving bulb in a dimmer switch light fitting ?  (Read 6706 times)

Offline neilep

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Dear Light-Bulbologists,

As a sheepy I am of course the proprietor of a number of light emitting devices !....well, it goes without saying really doesn't it ?

Woolly Four Legged Ruminant Mammals of the Genus Ovis = Owner of lights !...bloody obvious really !...blatant in fact !!


So, whilst dosing some shopping recently in Tesco* (US Peeps- TESCO* is a ' store ' , A ' store ' is a place where ewe buy things from !...I think ewe may have some too...check your town center !)...anyway, TESCO* (the 'store') had a special deal going on some GE energy light bulbs for 68p each !!..Now, where I come from (a hill in Wales) that's a bargain !...so I bought a load and set upon myself the task to exchange the bulbs in my house !


Here is an example of a bulb in a lamp (I have labeled the two to assist ewe)




But *le sigh* I'm distraught !...It says on the pack that I can NOT put the bulbs in sockets where dimmer switches are used !!...

I'm so peeved off I wrote to my neighbour to complain !..he hasn't responded yet but I did notice a 'FOR SALE' board going up this morning just a few hours after banging on his door, ringing his bell, shouting through his letterbox and finally posting my complaint through his letterbox at 3am this morning...followed by the contents of my cats litter tray (which contains the contents of their little bot-bots !)


So, why can I NOT put an energy saving light bulb in a socket attched to a dimmer switch ?


I wish I knew !!..I don't though !!!.. I want to know..If I did know then I'd be rather a silly sheepy for asking ewe this then wouldn't I ?......and as ewe all know I am the height of sensibility !



Hugs and shmishes



neil
Enegery Bulb Enquirer
xxxxxxxxxxxxxxxxxxxxxxxxxxxx

mwah mwah mwah


* Energy light saving bulbs are also available at other equally good stores but if TESCO want to send me a £100 voucher and a years supply of money then that would be just simply super of them !



« Last Edit: 14/09/2008 18:08:50 by neilep »


 

Offline DoctorBeaver

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GE Energy bulbs. There's the answer. Genetically Enhanced Energy bulbs need a good kick up the fundamentals to get going. Dim and Dimmer switches are wusses and just don't cut the mustard with anything genetically enhanced and their superior attitude.
 

Offline neilep

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GE Energy bulbs. There's the answer. Genetically Enhanced Energy bulbs need a good kick up the fundamentals to get going. Dim and Dimmer switches are wusses and just don't cut the mustard with anything genetically enhanced and their superior attitude.


So, regular  switcheys have the ooompth needed to power a less powerful bulb !!

...whereas a wimpy dimmy switchy has no chutzpah to regulate the power required  eh !!

Well this is what I also thought, ...the good thing is I never saw any anti-genetically enhanced protestors donning placards in the store, nor have I witnessed them destroying crop fields of where the genetically enhanced bulbs are grown !








« Last Edit: 14/09/2008 22:05:10 by neilep »
 

Offline DoctorBeaver

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Another possibility, of course, is simply that I posted a total load of old blx  :D
 

Offline RD

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Reducing the voltage supplied, using a dimmer, drops the voltage below the threshold necessary for the arc in the fluorescent bulb, and the arc is extinguished, not dimmed. Regular (incandescent) bulbs do not have this property of requiring a threshold voltage to glow, so their light output can be continuously varied by changing the voltage. 
http://en.wikipedia.org/wiki/Fluorescent_lamp#Dimming

Dimmable domestic fluorescent bulbs are available, but cost more than 68p...
http://www.acehardwareoutlet.com/(fj2j5gi25zk0fv55coagdc55)/ProductDetails.aspx?SKU=3237120 (NB: USA 120 Volts, UK 240 Volts)
They incorporate their own dimming circuitry, i.e. do not require (incandescent) dimming "switches".
« Last Edit: 14/09/2008 20:51:34 by RD »
 

Offline Pumblechook

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Dimmer switches do not reduce the voltage supplied.

 

lyner

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Precisely; they alter the period, per mains cycle, for which the mains is supplied to the bulb / device ( on all the time for max brightness and half the time for 'half' brightness). Unfortunately, most dimmers assume that the load is a simple resistance and 'wait' to turn on at the appropriate time to let the right amount of current (hence, the charge) through that resistance.
Discharge type bulbs are not simple resistors and the average dimmer is too dim to cope. Also, the components of the bulb 'expect' to get a sinusoidal supply and they don't, so the whole system fails.
Amazingly, I have never tried the experiment as I would not be surprised to find that I had bust the dimmer. Could I try it in your house please?
 

Offline neilep

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THANK EWE ALL for your wonderful responses !

I consider myself educated and it's all thanks to ewe lot !

Please pat yourselves on the back and enjoy the moment this happiness has brought ewe !

Sophie...Of course ewe can try it at my house *goes to find JimBobs address*  ;D
 

Offline Pumblechook

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How many posters does it take to change a light bulb?
 

lyner

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Go on then.
Or was it just a rhetorical question?
 

Offline Pumblechook

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There is a long answer somewhere on the Internet.

Starts something like.... out of 1000 posters..  234 argue it should be 'lamp' and not bulb. 
 

lyner

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Well, a 'lamp' is the whole thing. The glass bulb is the thing which you replace - unless your 'er indoors and you are changing the decor.
That shows you how much posters know about things. But 76% got it right - better than New Theories would suggest.
 

Offline Pumblechook

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HOW MANY GROUP POSTERS DOES IT TAKE TO CHANGE A LIGHT BULB?

1 to change the light bulb and to post that the light bulb has been changed

14 to share similar experiences of changing light bulbs and how the light bulb could have been changed differently

7 to caution about the dangers of changing light bulbs

27 to point out spelling/grammar errors in posts about changing light bulbs

53 to flame the spell checkers

41 to correct spelling/grammar flames

6 to argue over whether it's "lightbulb" or "light bulb" ...

another 6 to condemn those 6 as anal-retentive

2 industry professionals to inform the group that the proper term is "lamp"

15 know-it-alls who claim *they* were in the industry, and that "light bulb" is perfectly correct

156 to email the participant's ISPs complaining that they are in violation of their "acceptable use policy"

109 to post that this group is not about light bulbs and to please take this discussion to a lightbulb group

203 to demand that cross posting to hardware forum, off-topic forum, and lightbulb group about changing light bulbs be stopped

111 to defend the posting to this group saying that we all use light bulbs and therefore the posts *are* relevant to this group

306 to debate which method of changing light bulbs is superior, where to buy the best light bulbs, what brand of light bulbs work best for this technique and what brands are faulty

27 to post URL's where one can see examples of different light bulbs

14 to post that the URL's were posted incorrectly and then post the corrected URL's

3 to post about links they found from the URL's that are relevant to this group which makes light bulbs relevant to this group

33 to link all posts to date, quote them in their entirety including all headers and signatures, and add "Me too"

12 to post to the group that they will no longer post because they cannot handle the light bulb controversy

19 to quote the "Me too's" to say "Me three"

4 to suggest that posters request the light bulb FAQ

44 to ask what is a "FAQ"

4 to say "didn't we go through this already a short time ago?"

143 to say "do a Google search on light bulbs before posting questions about light bulbs"
 

Offline Pumblechook

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Cuantos Bloggers hacen falta para cambiar una bombilla?
Humor friki clásico, visto en Emezeta:



14 lectores para compartir experiencias similares a los cambios de bombillas.
5 lectores para comentar cómo se podría haber hecho de forma diferente.
7 lectores para prevenir sobre los riesgos de cambiar bombillas.
 

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