Arthur P. Bloom posted:
Since lamps are basically resistors, adding more resistance to the supply legs will do nothing helpful.
Your best solution is to use a plain old transformer, one that doe not have wonky bits inside. I use a few ZW's for all my fixed A-C supplies, and a telephone company D-C supply for relays and signalling.
My thought was just to change the operating voltage to one that is stable and still have the desired illumination.
However, a different non-electronically controlled transformer will of course work, but that wasn't the question.