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light bulbs #48389
02/10/05 04:54 PM
02/10/05 04:54 PM
D
dride2324  Offline OP
Junior Member
Joined: Feb 2005
Posts: 5
Randolph,MA USA
Has anyone come up with a reasonable explanation for why light bulbs keep burning out (various types)very often


DRIDE
Work Gear for Electricians and the Trades
Re: light bulbs #48390
02/10/05 05:09 PM
02/10/05 05:09 PM
B
BPiersel  Offline
Member
Joined: Jan 2005
Posts: 18
Minnesota
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).

Re: light bulbs #48391
02/10/05 08:13 PM
02/10/05 08:13 PM
D
denny3992  Offline
Member
Joined: Jan 2005
Posts: 53
orwigsburg,pa USA
any body else think that you plant "bulbs" in the ground to grow flowers and you put lamps in a fixture??

Re: light bulbs #48392
02/10/05 08:26 PM
02/10/05 08:26 PM
N
Norstarr  Offline
Member
Joined: Sep 2004
Posts: 86
Wi
I put lamps in my living room and my wife puts bulbs in the garden. lol

Re: light bulbs #48393
02/10/05 09:14 PM
02/10/05 09:14 PM
D
dride2324  Offline OP
Junior Member
Joined: Feb 2005
Posts: 5
Randolph,MA USA
Thanks BPiersel
that helps explain what is happening to the incandescent bulbs (temperture and vibration)


DRIDE
Re: light bulbs #48394
02/10/05 09:56 PM
02/10/05 09:56 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,918
Brick, NJ USA
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
Re: light bulbs #48395
02/10/05 11:36 PM
02/10/05 11:36 PM
E
e57  Offline
Member
Joined: May 2003
Posts: 2,876
S.F.,CA USA
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
Re: light bulbs #48396
02/10/05 11:43 PM
02/10/05 11:43 PM
C
Clydesdale  Offline
Member
Joined: Nov 2004
Posts: 138
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.

Re: light bulbs #48397
02/11/05 12:51 AM
02/11/05 12:51 AM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,167
Estero,Fl,usa
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
Re: light bulbs #48398
02/11/05 04:26 AM
02/11/05 04:26 AM
M
marcspages  Offline
Member
Joined: Oct 2004
Posts: 48
London, UK
... 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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