Author Topic: Were there any choke ballasts designed for F90T17 lamps?  (Read 2131 times)
WorldwideHIDCollectorUSA
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HID, LPS, and preheat fluorescents forever!!!!!!


Worldwide HIDCollectorUSA
Were there any choke ballasts designed for F90T17 lamps? « on: October 30, 2020, 03:03:06 AM » Author: WorldwideHIDCollectorUSA
I wonder if there actually was such a thing as a series choke that was designed for a single F90T17 lamp on 120v 60hz mains? I would imagine that a F90T17 lamp would be compatible with series chokes on 120v 60hz mains because these lamps have a nominal arc voltage of 60v which is close to the operating voltage seen on American HPS lamps from 35w-150w S55 and those lamps did sometimes operate on 120v chokes as well.
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.

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funkybulb
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Re: Were there any choke ballasts designed for F90T17 lamps? « Reply #1 on: October 30, 2020, 03:00:41 PM » Author: funkybulb
 Problem is it bit problematic on 120 volt to start on a choke
 So ballast is stepped up a bit with boosted OCV to start more reliable
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