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Old 02-15-2010, 06:52 PM   #1
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modifying my HQI light

I have a 24" current usa outer orbit light fixture. it has a 150watt halide in the center and 4 t-5 actinics. i'm interested in converting it into a 250watt halide with the t-5's. so i'm thinking about pulling the old electronic ballast out and going to a external ballast rated for 250w and changing the fan. does any body know where i can get schematics or diagrams of the bulb and driver circuits for any HQI lights to get a basic theory of operation on how these bulbs fire up and run. has any one tried this and can give advise?
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Old 02-15-2010, 07:26 PM   #2
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You will also have to change the sockets. The 150w bulbs and 250w bulbs have different ends so they both won't fit into the same socket.
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Old 02-15-2010, 07:47 PM   #3
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how much larger are the 250w double ended bulbs? Do you know where i can find
parts like that?
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