You can buy 130V incandescent light bulbs at electrical supply stores. They have been used in commercial applications for years to cut down the coats of relamping. 73, John, W4AWM In a message dated 7/26/2011 7:46:27 P.M. Eastern Daylight Time, bguyger at sbcglobal.net writes: It would be a subtle way to make incandescent lamps burn out slightly faster. Bill