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Author Topic: Excessive Humidity John T. Moon II Film Handler Posts: 15 From: Las Vegas, NV, USA Registered: May 2003 posted 07-28-2003 08:40 PM                     Perhaps it's not the lamp but the ignitor electronics itself that are affected by the moisture.  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 07-28-2003 10:11 PM                        I suspect the moisture is affecting the spark gap. Automobile ignition systems also tend to act more up on really damp or rainy days. It doesn't take much moisture to hijack high voltage, especially if the insulation is questionable.  |  IP: Logged Dean Kollet Jedi Master Film Handler Posts: 591 From: Florida State University Registered: Jul 2003 posted 07-29-2003 12:09 AM                     I'm all about the dehumidifiers....we have them everywhere (FL here, so out humidity is crazy) and it seems to help a lot. We have to empty them daily though. The humidity seems to effect the number of times the lamp is struck to light....I'm an writing major so I don't remember much about Chemistry to try and figure out how it effects it, only thing I can guess it that the moisture doesn't allow a solid spark... The dampness has huge effects on my car's ignition system, but some sealant fixed that, but putting that inside a projector would probably not work too well.  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 07-29-2003 06:07 AM                        quote: I'm an writing major so I don't remember much about Chemistry to try and figure out how it effects it, only thing I can guess it that the moisture doesn't allow a solid spark... Water conducts electricity when there is even a minute amount of a conducting "contaminant" like salt, sweat, etc. to provide some mobile ions. So even if a wire or component is insulated, a layer of moisture is likely to conduct some high voltage.  |  IP: Logged

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