🚀 go-pugleaf

   Hello again.  More problems with my current research.  I need a UV
source.  I have a used Mercury lamp, said 250W before I took the envelope
off.  Inside is a quartz tube with two electrodes sticking into each
end and Hg blobs on the sides of the tube.  There is no filament between
the electrodes in the ends as in the ususal flourescent bulbs.
   On one end, the two electrodes are connected to the AC via a 15K (?)
resistor, i.e. hooked up like a little glow lamp with a current limiting
resistor.  The other end is simply connected to the AC, through what
was a filament of some sort before I evaporated it.  See the diagram
below.
    My question is, how is this lamp supposed to work and how can I
get it going without blowing fuses?  


 -------------------------------------------------------------------------|
    |           |                                                         |
    |           /                                           "filament"--> )
 110 V          \ R         --------------------------------------        (
   A.C.         /         |                                      |        )
                \         |                                      |        (
    |            |________|____                              ____|___ nc  |
    |                     |                                      |        |
 ---------------------====|====           Hg vapor           ====|====----|
                          |                                      |
                          |                                      |
                           -------------------------------------- 
                                      Quartz tube


   I've tried replacing the "filament" with two 100 W bulbs to limit 
current, but cannot get the lamp to go on reliably and it probably also
limits the useful power.  Is one supposed to use a ballast in series with
this type of lamp?
   Thanks in advance for your reply.
							Danube