flash triping voltages

I have asked this bfore I know, and so appologise for asking again......;

1)What is the permitted voltage for the pentax DSLR's?

2)What is a suitable adaptor (make/supplier) for connecting older guns with larger triping voltages.

3)on my old computer I had a bookmarked site that gave all the voltages for most of the old guns and hav stupidly lost this info with the new machines......searching has not provved fruitful so does anyone know the site please?

Any help would be very much appreciated, thank you.

I googled a bit. Is this what you are looking for?

Martin.