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This topic comprises 2 pages: 1 2
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Author
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Topic: Christie CH20 Phase Conversion
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Joshua Waaland
Jedi Master Film Handler
Posts: 800
From: Cleveland, Ohio
Registered: Dec 1999
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posted 06-07-2011 08:19 AM
Wow! Maybe a phase converter is the way to go.
Welding power sources are basically a big rectifier also. They convert three phase AC power into DC power. The old transformer based welders were all three phase and any single phase units only provided low amperage for welding thin material. A few years ago inverter based technology was introduced to the welding market and inverter welders are much different. You can plug an inverter into any phase or voltage level and it automatically detects it and adjusts internally. They are also much smaller and much lighter since they do not contain a transfromer. However they do have a lot of electronics which are more prone to failure. Overall, they are great machines and you can do many different processes with them like MIG, Pulse MIG, Scratch Start TIG, Stick, etc, etc. The old transformer based machines only can do MIG at best. The new inverters are still somewhat limited in output amperage on single phase input, but they are better than the transformer based machines.
I am guessing that the Strong switching power supplies are the cinema industries version of an inverter welder?
On a separate note, I pulled the xenon bulb out of the lamphouse this morning and it had some black spots inside. The lamphouse support screws were all falling out and the whole internal aluminum lamphouse was leaning to the igniter side. The previous owner of this equipment that ran the theater was a really nice guy, but I could tell he had absoluetly no experience working with this kind of equipment. The bulbs were obviously never rotated or changed out, so I tossed them to prevent any future explosions in the lamphouse. Considering that the console is sitting in the garage (with no projector on it and the snood is open) where my son plays sometimes, I feel much better having gotten the bulb out. The previous owner removed the equipment and took it home with the bulbs still installed. ![[Eek!]](eek.gif) Like I said, he had no understanding of this equipment and how to handle it properly.
There were two consoles but one of them fell out of his trailer when he was transporting it home. It was smashed and the bulb ends were just hanging there and most of the top of the console was gone. I stripped it down and kept some spare parts from it, but the sheet metal and the transformer have been in the back of my truck for the past two weeks waiting to go to the scrap yard. I tried taking the transformer apart layer by layer, but that is taking forever. I brought it to work today to try and cut it with a torch or our metal saw to remove the copper. This is too much like work. ![[Wink]](wink.gif)
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