Can I run different shaped arctube MH lamps on same ballast? « on: November 27, 2024, 06:15:59 AM » Author: LightsAreBright27
I have a 70w HPS/MH ballast, that can comfortably run quartz arctube lamps (like on the right). Can I run the same wattage osram powerball and philips CDM lamps on the same ballast?
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	Re: Can I run different shaped arctube MH lamps on same ballast? « Reply #1 on: November 27, 2024, 06:24:52 AM » Author: LightsAreBright27
Also, I have this 70w CDM-R. Can I run this too?
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	Re: Can I run different shaped arctube MH lamps on same ballast? « Reply #2 on: November 27, 2024, 06:57:47 AM » Author: dor123
You can run lamps with different shaped arctubes providing they are all 70W in the case of the 70W HPS/MH ballast.
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	Re: Can I run different shaped arctube MH lamps on same ballast? « Reply #3 on: November 27, 2024, 08:53:21 AM » Author: LightsAreBright27
Thanks!
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	Re: Can I run different shaped arctube MH lamps on same ballast? « Reply #5 on: November 27, 2024, 09:40:25 AM » Author: LightsAreBright27
I tested them all and they work normally on my ballast.
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Holder of the rare and sacred F10T12/BL lamps here!
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	Re: Can I run different shaped arctube MH lamps on same ballast? « Reply #7 on: November 27, 2024, 09:51:37 AM » Author: LightsAreBright27
The philips one struggled to strike though. It took a long time to finally ignite. The osram one had unusual brightness fluctuations while warming up.
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Holder of the rare and sacred F10T12/BL lamps here!
Also known as LAB27 for short.
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245v 50Hz

	Re: Can I run different shaped arctube MH lamps on same ballast? « Reply #9 on: November 27, 2024, 10:32:15 AM » Author: LightsAreBright27
The philips one had less colour shifting, compared to a quartz MH with same amount of wear. Though the philips wasn't much dimmer compared to a new lamp.
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Holder of the rare and sacred F10T12/BL lamps here!
Also known as LAB27 for short.
One of the only Indian members here!
245v 50Hz

	Re: Can I run different shaped arctube MH lamps on same ballast? « Reply #10 on: November 27, 2024, 12:38:11 PM » Author: dor123
Quote from: RRK on November 27, 2024, 09:59:36 AM Well, old HPS ballast may suffer with having ignition pulses too low, except you fit it with a new external ignitor of course. Both your ceramic lamps look quite heavily used, Philips one may well have 2/3+ of the life spent. Based on how arc tube corrosion looks. But these are impressive as how color balance still holds even in such used lamps, just light output drops for sure. Is this possible to see the corrosion of quartz MH arctubes?
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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.