What characteristics have to be taken into consideration when replacing modeling light bulbs?
For instance, can a 240V standard light bulb be plugged into a 90V modeling light bulb socket? How would LED/CFL bulbs react to being put in a flash set (which I guess use a 0-90V voltage range to control the light intensity)?
More specifically, can I use ordinary light bulbs, can I find no-name light bulbs, or should I stick to spare parts from my flashes' manufacturer?
Reference: I use Elinchrom flashes that expect 90V 100W bulbs I can't find under 25€ (yes, I use North American flashes in Europe).