Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!think.com!snorkelwacker.mit.edu!stanford.edu!agate!darkstar!felix!haynes From: haynes@felix.ucsc.edu (99700000) Newsgroups: sci.electronics Subject: Re: Size of Resistor for NE-2H, NE-2 Message-ID: <15911@darkstar.ucsc.edu> Date: 17 May 91 05:28:01 GMT References: Sender: usenet@darkstar.ucsc.edu Organization: University of California, Santa Cruz Open Access Computing Lines: 23 In article sp@questor.wimsey.bc.ca (Steve Pershing) writes: > >What size of resistor should one put in series with NE-2's and NE-2H's, when >running them on 120vac? (I seem to remember 100K and 2m, but I'm not sure.) > I seem to remember 220K and 56K, but then the right answer depends on how bright you must have it and how long you want the neon to last. You see all kinds of equipment with those packaged neon assemblies, and after a year or two they start flickering and pretty soon after that they go dark. I see the following in a catalog. "Neons with the 22K resistor value give brighter indication and have a minimum life of 5000 hours; those with the 56K resistance value, however, have a life of 25,000 hours." and descriptions of lamp holders say the NE-51 lamp for 56K resistor and NE-51H lamp for 22K resistor. -- haynes@cats.ucsc.edu haynes@ucsccats.bitnet "Any clod can have the facts, but having opinions is an Art." Charles McCabe, San Francisco Chronicle