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#48389 02/10/05 05:54 PM
Joined: Feb 2005
Posts: 5
D
Junior Member
Has anyone come up with a reasonable explanation for why light bulbs keep burning out (various types)very often


DRIDE
#48390 02/10/05 06:09 PM
Joined: Jan 2005
Posts: 18
B
Member
What type of light bulbs? For incandescent bulbs, bulb life can be shortened by a supply voltage that is higher than the rated voltage (even 125V on a 120V lamp will reduce lamp life by almost 40%), excessive vibration, and frequent switching (added stress caused by applying full voltage to a cold filament).

#48391 02/10/05 09:13 PM
Joined: Jan 2005
Posts: 53
D
Member
any body else think that you plant "bulbs" in the ground to grow flowers and you put lamps in a fixture??

#48392 02/10/05 09:26 PM
Joined: Sep 2004
Posts: 86
N
Member
I put lamps in my living room and my wife puts bulbs in the garden. lol

#48393 02/10/05 10:14 PM
Joined: Feb 2005
Posts: 5
D
Junior Member
Thanks BPiersel
that helps explain what is happening to the incandescent bulbs (temperture and vibration)


DRIDE
#48394 02/10/05 10:56 PM
Joined: Apr 2002
Posts: 7,299
Likes: 6
Member
Welcome to the newcomers......

Installing a simple dimmer to control the lighting instead of a switch results in increased bulb life also.

The #1 reason the lamps 'burn out' quick is that the majority are made "CHEAP", and there is a job security issue underlying also.

John


John
#48395 02/11/05 12:36 AM
Joined: May 2003
Posts: 2,876
E
e57 Offline
Member
The government conspiracey called "Planned Obsolecence" and its the LAW!

The only things allowed to be built to last are Military and farm equipment.

Things like lightbulbs are the expendables that keep the economy going. You could make one last much longer, but you would sell fewer of them.

Anyway, resistive connection in circuit, or lamp-holder. Ohm out in 20k range.


Mark Heller
"Well - I oughta....." -Jackie Gleason
#48396 02/11/05 12:43 AM
Joined: Nov 2004
Posts: 138
C
Member
how many electrical contractors does it take to screw in a light bulb?...none, they have their apprentice do it!(and so they should, too). [Linked Image] yeah, constantly changing bulbs, too. and i have long thought the govt. let the roads get the way they so that people had to buy new cars, parts, ect.

#48397 02/11/05 01:51 AM
Joined: Jul 2004
Posts: 9,696
Likes: 11
G
Member
Somebody gave me a box of "sign bulbs" 15 years ago and I have never had one burn out. The problem is they are only 30w but I use them for soft lighting in my screen cage and they are perfect.


Greg Fretwell
#48398 02/11/05 05:26 AM
Joined: Oct 2004
Posts: 48
M
Member
... and if you really want to stop spending your hard-earned cash on lamps, this is a solution many friends have found to work a treat! You'll have to convert the figures for your side of the Pond.

M.

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