Author Topic: Can mercury free HPS lamps cycle?  (Read 2355 times)
dor123
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Can mercury free HPS lamps cycle? « on: October 11, 2024, 06:51:43 AM » Author: dor123
In this video George turned on his Sylvania SHP-TS mercury free HPS lamp. However, the lamp cycles in this video, despite it don't have mercury.
Can really mercury free HPS lamp cycle at EOL? Or what can cause mercury free HPS lamp to cycle?
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Re: Can mercury free HPS lamps cycle? « Reply #1 on: October 14, 2024, 12:03:21 PM » Author: dor123
@James?
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Re: Can mercury free HPS lamps cycle? « Reply #2 on: October 19, 2024, 07:57:17 AM » Author: dor123
@James, @RRK, someone?
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Re: Can mercury free HPS lamps cycle? « Reply #3 on: October 19, 2024, 04:16:26 PM » Author: James
Normally not so soon as a regular HPS lamp.  But if they live long enough for the arc tube to become severely blackened and raise the sodium vapour pressure and lamp voltage, I cannot exclude that it might be possible.  Especially if combined with dips in the mains voltage.
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Re: Can mercury free HPS lamps cycle? « Reply #4 on: October 20, 2024, 07:57:57 AM » Author: dor123
But the sodium is lost from the arctube as the lamp age. This is the cause of regular HPS lamps to become redder during life. Not?
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