ODNO inquiry
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Old 02-08-2013, 08:52 PM   #1
danielt
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ODNO inquiry


Hello everyone,

I have a question regarding hooking up a fluorescent lamp in ODNO style.

I searched the net for this info some time ago when I tried to wire my 2X54W Osram QTP5 ballast to power just one lamp but that attempt failed as the lamp would not lit.

I was going to try this again but this time I'm planning to use two 1X54W Osram QTP5 ballasts to power one lamp.

Has anyone tried this before? I'm suspecting these ballasts are too smart to be wired in this way and as a protection measure they do not attempt to lit the lamp.

Any help is appreciated!
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Old 02-08-2013, 10:22 PM   #2
steven p
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With two ballasts I have no clue... The thing about ODNO is that you're traditionally taking a single double bulb ballast and wire it so all the juice hits one bulb. I have a DIY'd shop light with two overdriven bulbs that are running on their own ballast. One does not fire all the time... But I can still stick t12s and t8s into the thing and the one atleast always works... The other takes some occasional fiddling...

Do your ballasts have a firing pin or a starter? Are they wired against each other or is something shorted?
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Old 02-09-2013, 09:11 AM   #3
danielt
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There is no starting mechanism, these are electronic ballasts. The picture show both the 2X and 1X for detail. The first time I tried the 2X and checked everything, the ballast still works after the attempt and no cracking sounds or smoke came out of it from the attempt.

The 1X I haven't tried hooking up yet. Oh, and the lamps are HO T5s. I'm guessing this method only works with NO lamps?
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