Re: Fastest incandescent lamp?
- From: NoSpam@xxxxxxxxxxx (Bob Masta)
- Date: Tue, 22 Nov 2005 14:07:01 GMT
On 21 Nov 2005 13:38:01 -0800, "Bill Bowden" <wrongaddress@xxxxxxx>
wrote:
>> If response time is an issue, why not convert to LEDs?
>
>Yes, I thought of using white LEDs but I don't think a single LED would
>be bright enough and has a narrow viewing angle. Most of the light
>would go straight up to the ceiling. I suppose the Luxon star 1 watts
>might work, but are too expensive.
>
>Anyway, I picked up a couple 14 volt 120mA bulbs at Radio Shack today
>for $1.71. I'll give them a try and report back. They are cheap enough
>to run at higher voltage with a little less lifetime.
>
>Do you know what the reduced lifetime would be running at excessive
>voltage?
>
I have an old bicycle flasher that uses a 9V battery
to drive a 6V bulb. It is very bright, but the flashes
are very brief. At about 2 flashes per second, it
has run hundreds of hours without bulb failure,
while I've gone through many batteries over the
years. This was a complete surprise to me, since
I knew about the 12th power law, and also expected
that the power bursts would cause some sort of
thermal / mechanical fatigue.
So as long as your flashes are short, you
may likewise get a long bulb life. YMMV <g>
Best regards,
Bob Masta
dqatechATdaqartaDOTcom
D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Home of DaqGen, the FREEWARE signal generator
.
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