Author Topic: Could I revive 11W EOL PL-S lamp  (Read 1159 times)
Froggy05
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Could I revive 11W EOL PL-S lamp « on: May 28, 2020, 01:08:26 PM » Author: Froggy05
Is it possible? I know that you can revive a fluorescent tube with incandescent lamp, but what about PL-S / CFL lamp? :wndr:
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dor123
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Re: Could I revive 11W EOL PL-S lamp « Reply #1 on: May 28, 2020, 01:19:17 PM » Author: dor123
PLs contains krypton which have higher restarting and striking voltage, similar to T8, so they can't operate on a resistive ballast.
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Medved
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Re: Could I revive 11W EOL PL-S lamp « Reply #2 on: May 29, 2020, 11:27:36 AM » Author: Medved
If you can revive an "EOL" lamp or not depends on why it went "EOL", what happened there.
If just the baryum layer is missing (it was consumed faster than it gets reformed from the oxide; so lamp may exhibit EOL but it is not real EOL), slight and brief overheating of the filament may do the trick.


But if the baryum oxide reservoir is completely consumed (most common EOL of modern lamps), there is no way to revive it.

If the problem is mercury migration (happens after part of the outdoor fixture cover gets broken and one end of the lamp is exposed to cold air draft so the Hg migrates there and is then missing in the tube volume; becomes problem mainly in winter), the lamp usually recovers itself after the cover is fixed, it takes some hours or 10's of hours if really bad.
But if the mercury reacted with e.g. the phosphor and there wasnt enough of it in the first place (many US "low mercury" lamps), tyere is no recovery possible. Same if the gas gets contaminatec by air leaking in through a cracked seal or so, no way to recover.
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Froggy05
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Re: Could I revive 11W EOL PL-S lamp « Reply #3 on: May 30, 2020, 05:30:52 PM » Author: Froggy05
Thanks for information.
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