Re: [photo-3d] Re:projector brigthness

[Dan Wenz <djwenz@xxxxxxxx>]

georges belieres wrote:
> 
> Several members wrote about the insufficient brightness of their projector, which use 115 v lamps.
>  But people knows that these bulbs have large filaments and a poor optical efficiency !
>  A big improvement consists in changing the mains bulbs to small Q.I.lamps running on 24 or 36
>  v (250 or even 400 Watts)
> This results in a strong drop in overheating and a better light focus on the lenses.
> this modification can be brought on projectors as the TRIAD.  As the power supply is quite different, the transformer (or 2 transformers) cannot be included in the projector itself, and must be housed in a separate cabinet. But, it's worth trying !
> 
Is there any information/drawing available describing what additional
components are needed to supply the required voltage and current? A
simple transformer(s) dropping the 120 vac to 24 vac, having the proper
wattage capability OK?

 

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