[AG-TECH] Single computer node and good projectors
bowman at mvoice.com
Thu Dec 11 23:32:23 CST 2003
Is this different from the 'econo' setting?
Richard Naylor wrote:
> At 12:35 p.m. 11/12/2003 -0500, Gurcharan S. Khanna wrote:
>> our mitsubishis have a "low lamp" mode, but it only reduces the
>> lumens from 2300 to 2100, not sure what increase in lamp life
>> that translates to.
> In an earlier part of life I used to service some large projectors
> that used film for advertising in malls, airports etc. Philips only
> made the bulbs twice a year, and they were expesnive - about $50 each
> in 1983. They lasted a week.
> So I dropped the voltage from 230 to 210 and the bulbs lasted a month
> (I swapped them every month when I changed the film - they actually
> last 6 weeks. If you want your bulbs to last, drop teh voltage by 5%.
> easiest way is to use a 230/24V transformer and wire the secondary to
> reduce the 230 by 24V. (sort of like an autotransformer in reverse).
> Power utilities do it all the time at transmission voltages.
> So if your bulbs aren't lasting - make a small transformer unit.
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