I often have an occasion for _lowering_ the line voltage.  This is done
for filament lamp applications, such as extending the life of picture
frame tubular lamps by four times the rated life, or more.

I wire a small filament transformer (120v. to 12v.) secondary in
series-opposing with the line voltage.  This method subtracts 12 volts
from the 120 volts to give 108 volts.  This ten percent drop in voltage
will increase the lamp life by 390%, according to a graph published by
Electronics Products Magazine, October 15, 1973.  One gives up some
brightness, but it is a small price to pay for bulb cost savings in
picture frames, outdoor post lights, etc.  The transformer amperage
rating should be above the expected current to be drawn by the lamps.

So, with this in mind, Craig might _increase_ the voltage to the
ultra-violet lamps in the same manner by wiring the secondary of the
transformer in series-adding.  One could increase the line voltage by
12 volts with such a transformer.  A 24-volt transformer can bring the
line voltage up to 144 volts if desired.  That ought to snap those
reluctant ultraviolet lamps into shape.

Note that, according to the graph mentioned, increasing the voltage
of a filament lamp by only 10 percent (from 120 to 132 volts) will
_decrease_ the lamp's life to 30 percent of its rated life!  So if you
are living with voltages greater than 120 volts, not only do you lose
a tremendous amount of lamp life, you pay more for your electricity
because of the increased KWH due to the increased current.

Andy LaTorre