Philips CPO-TW and Philips CPO-TT run-up: Question « on: May 03, 2025, 08:50:17 AM » Author: dor123
Why the Philips CPO-TW lamp with the cylindrical arctube, runs up faster than the CPO-TT Xtra lamp with the round arctube?
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	Re: Philips CPO-TW and Philips CPO-TT run-up: Question « Reply #1 on: May 04, 2025, 03:02:22 AM » Author: AngryHorse
I’d guess, like a HPS, the cylindrical tube constricts the arc more, so the heat is closer to the halide dose 🤔
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	Re: Philips CPO-TW and Philips CPO-TT run-up: Question « Reply #2 on: Today at 09:53:55 AM » Author: dor123
I would expect that arctube with round ends would run up more quickly than cylindrical arctube. Also: The arctube isn't constricted by the arctube shape, but by the halide chemistry. The CPO-TW had Ce-Tl-Na, and I don't know if this is the chemistry of the CPO-TT Xtra. @James and @RRK, can you help?
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I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the international date format (dd.mm.yyyy).

I lives in Israel, which is a 220-240V, 50hz country.