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.
Hans - N2JFS
-----Original Message-----
From: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
To: towertalk <towertalk@contesting.com>
Sent: Tue, Jan 13, 2015 10:09 pm
Subject: Re: [TowerTalk] Fwd: Now THIS is a tower climb!
I once visited a BC station in Trinidad that had the red "on the air"
light inside a double panel of glass between the studio and control
room. I foolishly asked "do you mean you have to remove one of those
glass panels when you have to replace a burned out lamp?" The answer was
"no...we never have to replace them since they are 240 VAC bulbs and we
power them with 120 volts." I guess it cuts back on the illumination
but extends the life of the bulbs significantly.
Herb Schoenbohm, KV4FZ
On 1/13/2015 6:15 PM, Roger (K8RI) on TT wrote:
> Now, invent a really long life bulb and you will sell at least a
> hundred !!
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|