![]() |
Sven Franklyn Weil wrote: In article , Lizard Blizzard wrote: Neon lamps need a current limiting resistor, something like 47k or so, but not a transformer. Some of the screw base neons have the resistor That's the case with the teenytiny neon night-lights that are commonly built into clock radios and things. They sell those at Radio Shack. Bought a two-pack there last year. The large neon tube signs need a ballast in order to kick start the tube...similar to fluorecent lights. What is it? full moon? (no, that's a week away). I guess some young'uns just enjoy arguing what they don't know about... ;-) Look up the following: NE-30, NE-34, NE-40 and NE-56. At three watts on an edison base - the NE-40 is an impressive Neon bulb. (and yes it runs fine on 120VAC - in fact it'll fire at about 85V) best regards... -- randy guttery A Tender Tale - a page dedicated to those Ships and Crews so vital to the United States Silent Service: http://tendertale.com |
In article , Randy and/or Sherry wrote:
At three watts on an edison base - the NE-40 is an impressive Neon bulb. (and yes it runs fine on 120VAC - in fact it'll fire at about 85V) I keep forgetting about those decorative neon flicker bulbs - the ones with two closely positioned plates cut out in the shapes of crosses, stars of David, fish, women, flames, etc. Those are so delicate that one little tap can send one of those lamps into convulsions and possibly premature failure. I had a set of the flames in a menorah and every year there's one or two that just ... go out...maybe they're all too close together (about inch or two apart). Isn't there an issue with capacitance between those bulbs if they're close together that causes them to go nuts? -- Sven Weil New York City, U.S.A. |
In article , Randy and/or Sherry wrote:
At three watts on an edison base - the NE-40 is an impressive Neon bulb. (and yes it runs fine on 120VAC - in fact it'll fire at about 85V) I keep forgetting about those decorative neon flicker bulbs - the ones with two closely positioned plates cut out in the shapes of crosses, stars of David, fish, women, flames, etc. Those are so delicate that one little tap can send one of those lamps into convulsions and possibly premature failure. I had a set of the flames in a menorah and every year there's one or two that just ... go out...maybe they're all too close together (about inch or two apart). Isn't there an issue with capacitance between those bulbs if they're close together that causes them to go nuts? -- Sven Weil New York City, U.S.A. |
On Wed, 03 Sep 2003 10:15:14 -0700, Lizard Blizzard
wrote: Ban wrote: Watson A.Name - Watt Sun wrote: Hey, I agree with you. But instead, I would have used higher voltage lamps, two in parallel. Decent LEDs were hard to get back in the '70s. Another solution might be to use neon lamps. You mean flourescent lights. neon lamps need a high voltage transformer. :-( Neon lamps need a current limiting resistor, something like 47k or so, but not a transformer. Some of the screw base neons have the resistor built into the base. Some of the ones I've seen have a standard sized 'edison' lamp base with a glass envelope that's about twice the size of the base. They last something like tens of thousands of hours. They would solve the problem of burned out filaments. The only problem is the (described) Neon lamp does not provide a high enough light output for emergency egress signs. They tend to be a very weak, flickering orange. Make a good pilot light, but not much more. |
On Wed, 03 Sep 2003 10:15:14 -0700, Lizard Blizzard
wrote: Ban wrote: Watson A.Name - Watt Sun wrote: Hey, I agree with you. But instead, I would have used higher voltage lamps, two in parallel. Decent LEDs were hard to get back in the '70s. Another solution might be to use neon lamps. You mean flourescent lights. neon lamps need a high voltage transformer. :-( Neon lamps need a current limiting resistor, something like 47k or so, but not a transformer. Some of the screw base neons have the resistor built into the base. Some of the ones I've seen have a standard sized 'edison' lamp base with a glass envelope that's about twice the size of the base. They last something like tens of thousands of hours. They would solve the problem of burned out filaments. The only problem is the (described) Neon lamp does not provide a high enough light output for emergency egress signs. They tend to be a very weak, flickering orange. Make a good pilot light, but not much more. |
Sounds like a great class, where you have to block the door to keep the
students from leaving. What was the class and who sponsored it? A mandatory safety class perhaps? Roy Lewallen, W7EL Watson A.Name - Watt Sun wrote: I gotta tell you what happened at work last week. The head of security came over and told us that someone had complained that one of our tables was blocking the door (it's a temporary setup). The head of registration told him that she put it there to keep the students from leaving. The security guy says, but that's an emergency exit, see that sign up there? So she says, oh, ok. Well, then, can we move the sign? :-))) |
Sounds like a great class, where you have to block the door to keep the
students from leaving. What was the class and who sponsored it? A mandatory safety class perhaps? Roy Lewallen, W7EL Watson A.Name - Watt Sun wrote: I gotta tell you what happened at work last week. The head of security came over and told us that someone had complained that one of our tables was blocking the door (it's a temporary setup). The head of registration told him that she put it there to keep the students from leaving. The security guy says, but that's an emergency exit, see that sign up there? So she says, oh, ok. Well, then, can we move the sign? :-))) |
"Sven Franklyn Weil" wrote in message ... In article , Randy and/or Sherry wrote: At three watts on an edison base - the NE-40 is an impressive Neon bulb. (and yes it runs fine on 120VAC - in fact it'll fire at about 85V) I keep forgetting about those decorative neon flicker bulbs - the ones with two closely positioned plates cut out in the shapes of crosses, stars of David, fish, women, flames, etc. I've got one of those (somewhere) with R. Crumb's "Keep on Truckin'" guy as the filament...bought in the 70's, still worked the last time I plugged (screwed) it in. jak Those are so delicate that one little tap can send one of those lamps into convulsions and possibly premature failure. I had a set of the flames in a menorah and every year there's one or two that just ... go out...maybe they're all too close together (about inch or two apart). Isn't there an issue with capacitance between those bulbs if they're close together that causes them to go nuts? -- Sven Weil New York City, U.S.A. |
"Sven Franklyn Weil" wrote in message ... In article , Randy and/or Sherry wrote: At three watts on an edison base - the NE-40 is an impressive Neon bulb. (and yes it runs fine on 120VAC - in fact it'll fire at about 85V) I keep forgetting about those decorative neon flicker bulbs - the ones with two closely positioned plates cut out in the shapes of crosses, stars of David, fish, women, flames, etc. I've got one of those (somewhere) with R. Crumb's "Keep on Truckin'" guy as the filament...bought in the 70's, still worked the last time I plugged (screwed) it in. jak Those are so delicate that one little tap can send one of those lamps into convulsions and possibly premature failure. I had a set of the flames in a menorah and every year there's one or two that just ... go out...maybe they're all too close together (about inch or two apart). Isn't there an issue with capacitance between those bulbs if they're close together that causes them to go nuts? -- Sven Weil New York City, U.S.A. |
030902 1644 - nobody wrote:
In wrote: But in 1978 I wired the 2 bulbs in the each of the EXIT lights in the church in series. Congratulations, you probably bypassed a safety feature. If they're in parallel, if one burns out the other keeps going. In series, if one goes they're both out, and the exit sign is no longer visible. Also, they should be checked to see if they still work properly when the power goes out and the battery system takes over. |
All times are GMT +1. The time now is 10:26 PM. |
Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
RadioBanter.com