Actinic Induction Fluorescent Lamp Spectral Data - T5 Replacement?

[Dana Riddle]

A friend in Zurich sent me this spectral data from an induction fluorescent lamp. This type of fluorescent lamp (developed by Nikola Tesla) has the advantage of extended life when compared to a standard fluorescent since it doesn't have internal electrodes. Internal electrodes are degraded during startup and general operation, resulting in the tube becoming coated with metallic particles (usually seen as blackening of the tube's ends in a process called 'sputtering'.) Induction fluorescent lamps are available in the U.S. although I'm unsure if any possess an actinic spectrum. This fellow's name is Hellen Viky - look him up on Facebook if you've got any questions.

 

[Hitman]

Interesting... The spectrum reminds me of a blue+ bulb.

 

[Mastiffsrule]

Interesting. Especially about the start up and running of the fluorescents.. Is there a way to predict more accurately bulb life on the t5 and do spectrum of light come into play at all?

Also, Thanks for the write up.

 

[oreo54]

Phosphors are the same and can be mixed any old way. Only difference really is the manner of exciting them..
Better analysis..
https://www.bulbamerica.com/blogs/news/15959956-what-is-induction-lighting

However, when comparing an induction light to a conventional lamp using a light meter, the induction lamp is generally measured as producing less light than the conventional lamp.

Trickery.. ;)

bottom line seems to be they appear brighter to the eye but are not to the meter.
Keep in mind they are not 50% (energy savings) actually "dimmer"

Believe there are some actinic induction bulbs somewhere .. (EU probably)

Oh ya...
Italy...
https://www.reef2reef.com/threads/unique-fluorescent-lamp-from-italy.483418/

well close to actinic..

last :
https://edisontechcenter.org/InductionLamps.html

Keep in mind Tesla started it.. ;) Which "edison" ignored in the above..

Nikola Tesla demonstrated wireless transfer of power to electrodeless lamps in his lectures and articles in the 1890s, and subsequently patented a system of light and power distribution on those principles.[1]


Example of a round 150 W magnetic induction lamp
In 1967 and 1968, John Anderson of General Electric[2][3] applied for patents for electrodeless lamps.

https://teslauniverse.com/nikola-tesla/articles/electric-discharge-vacuum-tubes-0

 

[Dana Riddle]

Interesting. Especially about the start up and running of the fluorescents.. Is there a way to predict more accurately bulb life on the t5 and do spectrum of light come into play at all?

Also, Thanks for the write up.

I've got some degradation data of fluorescent lamps. Did this over 20 years ago - if memory serves these were T12 lamps. What I don't know is if a T5 degrades more quickly due to sputtering and a smaller interior surface. Does anyone know the answer?

 

[oreo54]

Not exactly an answer..
https://www.ee.co.za/article/analysing-causes-blackening-ends-fluorescent-lamps.html

 

[skim]

Reminds me of the Hagan Marne Glow tubes.

 

[DogsRule]

I've got some degradation data of fluorescent lamps. Did this over 20 years ago - if memory serves these were T12 lamps. What I don't know is if a T5 degrades more quickly due to sputtering and a smaller interior surface. Does anyone know the answer?

Don't have the answer, but my guess would be smaller electrodes in T5 vs T12 to keep proportions, so should be the same effects.

 

[Dana Riddle]

Don't have the answer, but my guess would be smaller electrodes in T5 vs T12 to keep proportions, so should be the same effects.

Quite possible - thanks!