Thank you, Charles, for the excellent summary and references. Jeremy N6WFO
On Fri, Nov 17, 2017 at 6:23 AM Charles Steinmetz <csteinm...@yandex.com> wrote: > David wrote: > > >> to buy NEW bulbs from a reputable manufacturer who provides specs > > > > Any recommendations - I can't find a source in UK. I know Philips used > to make them, but where I'd buy a few &deity only knows. > > Google is your friend. neon, bulb, lamp, radioactive, and "dark effect" > are good search terms. Here's what I found in about 5 minutes (all > US-centric): > > Mouser and Digi-Key both have quite a variety of neon bulbs available, > including bulbs with wire leads from VCC, JKL, and Lumex. You would > need to review datasheets and contact the manufacturers to inquire about > radioactive additives: > < > https://www.mouser.com/Optoelectronics/Lamps-Holders/Lamps/_/N-5g6r?Keyword=neon&FS=True > >\ > > Other large distributors probably have similar selections. > > This catalog from VCClite indicates that some of their bulbs have > reduced dark effect, including the A1D-T and A2B, both of which Mouser > and Digi-Key carry: > < > https://vcclite.com/wp-content/uploads/wpallimport/files/files/NeonIndicatorLamps.pdf > > > > You will probably still want to find out for sure if the dark effect > reduction is due to a radioactive additive. > > Here's some general information on glow lamps: > > 25 pages of glow lamp specifications from GE back in the day. Quite a > few of them are listed as having a "mild radioactive additive" to reduce > the dark effect: > < > https://static1.squarespace.com/static/57ae25c75016e1690c41b053/t/57ae2fd003596ed24fa8f54c/1471033297306/Glow+Lamp+Specifications.pdf > > > > The 1966 edition of the GE glow lamp manual can be found here: > < > http://www.ko4bb.com/getsimple/index.php?id=download&file=06_Misc_Test_Equipment/GE/General_Electric_Glow_Lamp_Datasheet_1966.pdf > > > > Best regards, > > Charles > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > -- Sent from my iPad 4. _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.