Glow discharge in the outer of my Osram HQI-TS 70W/WDL during hot restrike: Why? « on: April 06, 2016, 11:29:32 AM » Author: dor123
During capturing a video of my new Osram HQI-TS 70W/WDL Excellence hot restriking, a glow discharge struck inside the envelope of the lamp during the lamp cooling down period. Why this is happening? Is this a bad state?
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I lives in Israel, which is a 220-240V, 50hz country.

	Re: Glow discharge in the outer of my Osram HQI-TS 70W/WDL during hot restrike: Why? « Reply #1 on: April 07, 2016, 11:01:09 AM » Author: Medved
I would guess a capacitive coupled discharge (if I recall well, these lamps are supposed to have no exposed metal parts within the outer), coming from the fast, high dV/dt pulsing of the ignitor. If the lamp is well made and the quartz intact, I would see no problem there at all...
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