[Noisebridge-discuss] Projector bulb

[miloh]

On Wed, Dec 8, 2010 at 7:55 PM, Jake <jake at spaz.org> wrote:
> Projectors such as the one at Noisebridge use a mercury-vapor bulb, which
> is actually quite small compared to what is usually thought of as the
> "projector bulb", which is actually an assembly of a bulb, a mirrored
> glass parabolic reflector, a glass UV shield, a plastic frame and handle,
> and some high-voltage wires and a connector.
>
> A "grow light" style light bulb of the appropriate wattage and formulation
> can be had for $15-25 [citation needed] which contains the same type of
> bulb as our projector uses.  This bulb is the actual quartz object inside
> what is actually a glass "envelope" which protects the bulb from the
> effects of high temperature in our dirty atmosphere, and it also blocks
> the UV to prevent sunburns and blindness.
>
> Since a projector uses forced air, the quartz bulb can operate without a
> sealed envelope.  It is cemented into the parabolic glass reflector (which
> we already have, in the projector) with something like tile grout.
>
> I have a few projector bulbs salvaged from "dead" projectors, and I would
> be willing to transplant one of them into the noisebridge projector as a
> skillshare, when its bulb gets bad enough to be officially dead.  Although
> I would prefer if someone (other than me) would go out and get a Mercury
> Vapor lamp of the appropriate wattage and bulb size.
>
> To counter skepticism that such a bulb would actually work, we can connect
> said bulb to the projector's bulb circuit without actually installing it,
> and we will see that it lights up and makes everybody curse and look away.
>

sounds neet - when can we do this?  Next Monday?


> P.S. keep in mind that we will not only save a couple hundred dollars on
> making our own bulb repair, but we will be propogating an essential
> primativist survival skill.

anyone else want economical essential primativist survivalist skills
as a break from your objectivism study sessions?


-rma