[TowerTalk] Incandescent bulbs

[Hans Hammarquist via TowerTalk]

If 16th power, then 5.4x. Getting closer. 


I guess, though, the life improvement is not a simple function. Just increase the voltage to the point when the bulb "blows up" immediately. Even simple thinks can be rather complicated when we get in to the details.


Hans - N2JFS



-----Original Message-----
From: Jim Lux <jimlux at earthlink.net>
To: towertalk <towertalk at contesting.com>
Sent: Wed, Jan 14, 2015 2:21 pm
Subject: Re: [TowerTalk] Fwd:  Fwd:  Now THIS is a tower climb!


On 1/14/15 11:05 AM, Hans Hammarquist via TowerTalk wrote:
> It's a well know fact that the life span of incandescent light  bulbs 
increases with lower operating voltage. If I remember it right the lifespan 
increases by 7 times with a 10% decrease in voltage. I guess a 240V bulb working 
on 120V would outlast the life of the radio station. Light efficiency (power in 
- light out) is not that good though.
>
>

3.5x life if 12th power (e.g. 0.9^12 = 0.28)

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