I am attempting to power an arc lamp (which I have) using a programmable power supply (which I have yet to source.) Though the lamp is rated at 1000w (37v at 27A) I would like to power it at about 800w in order to modify its emission spectra and extend its lifetime.
The lamp in question is out of production but nearly identical to an Osram HBO 1000 W/D. While the lamp housing is a modified Christie Xenolite 1000 W lamphouse fixture. The xenolite housing has been modified mechanically. The system had originally used a more modern (but still solid state) Christie power supply rather than the original rectifier power supply. We smoked quite a few caps in that power supply when we tried to fire it up. AFAIK the igniter in the Xenolite lamphouse still works but we haven't actually seen a bulb light since only the igniter works.
When attempting to source a power supply I see items like a Sorenson DCS 40-30E which can supply 0-40V and 0-30A. This seems perfect for me. Reading through the manual, it describes operating the supply in current limiting mode and voltage limiting mode. I may have misunderstood the terms but it seems to me the operation of an arc lamp requires both current and voltage be limited as the lamp will draw any "available wattage."
So, to restate the question, what is the theory of operation for a arc lamp regarding voltage/ current regulation and how does one specify this in the design of a power supply?