[ELECTRON] oh ... projections

[Clive Mitchell]

I believe there are some low power projectors that use a tungsten
halogen lamp.  Probably a 12V one.

The problem with tungsten halogen lamps in a projection scenario is
the heat they give of and their relatively low efficiency compared to
metal halide sources.

On 29 April 2010 07:42, Gordon JC Pearce <gordonjcp at gjcp.net> wrote:
> Could you adapt a projector to take a 24V supply directly to the bulb?
> Perhaps a pedal-powered generator using a lorry alternator and a couple
> of sealed lead-acid batteries would keep it going for a while when the
> cyclist's legs fell off.



-- 
Clive Mitchell.

http://www.bigclive.com