Lighting Question

I need some help I was reading a post about a new type of bulb that was MP and HPS in one bulb but was set up inside the if the bulb had problems it would not blow up the bulb it had some type of wire on the inside to stop it. Also it was a new bulb and you only get it about 400 watts does anybondy remember this thread or have any info on it? Thanks for any and all help
 
Top