Mogul vs. Double-Ended

14th July 2004, 01:36 AM

Quick question. I have a mogul base 250w MH attached to a big heavy M58 ballast. The bulb takes about 10 mins. to warm up to full brightness. Is this because of the ballast or the bulb?

If I hooked it (the bulb) up to an electronic ballast (i.e. Ice Cap) would it still have to warm up or would it be instantly at full brightness? Thanks.
-Willie

15th July 2004, 01:22 AM

Ok, could everyone take a break from trying to sell everybody something and please answer my question. I though this was Do-It-Yourself, not Sell-It-Yourself....

DEDan · 15th July 2004, 01:45 AM

I have not tried an electronic ballast, but from what I have read everywhere, yes it will reach full brightnes faster. One thing to consider is if you are using a probe-start bulb, It needs to hit a specific temp before it will reach full brightness. If you are using a pulse start bulb, it will reach full brightness much faster. The way to tell which type the bulb is: probe start has a 3rd electrode in the bulb that is attached to a heat sensative switch in the outer bulb area. A pulse start bulb has only the 2 electrodes at either end of the bulb.

I plan to upgrade to a pulse start soon.

doughboy · 15th July 2004, 08:02 PM

Metal halide bulbs take time to warm up. They last longer when run for long periods of time (10h on, 1hr off or so), so not for instant start up and stop. Even commercial projectors with MH have startup and shutdown periods.

14th July 2004, 01:36 AM	#1
willie Guest	Mogul vs. Double-Ended Quick question. I have a mogul base 250w MH attached to a big heavy M58 ballast. The bulb takes about 10 mins. to warm up to full brightness. Is this because of the ballast or the bulb? If I hooked it (the bulb) up to an electronic ballast (i.e. Ice Cap) would it still have to warm up or would it be instantly at full brightness? Thanks. -Willie

15th July 2004, 08:02 PM	#4
doughboy diyAudio Member Join Date: May 2003 Location: NE	Metal halide bulbs take time to warm up. They last longer when run for long periods of time (10h on, 1hr off or so), so not for instant start up and stop. Even commercial projectors with MH have startup and shutdown periods. __________________ Benq 557s, Split 12.2 fresnel, 250W Ushio, S50 ballast, beer can reflector soon to be oneida stainless ladle

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

15th July 2004, 01:22 AM	#2
willie Guest	Ok, could everyone take a break from trying to sell everybody something and please answer my question. I though this was Do-It-Yourself, not Sell-It-Yourself....

15th July 2004, 01:45 AM	#3
DEDan diyAudio Member Join Date: Feb 2004 Location: Delaware	I have not tried an electronic ballast, but from what I have read everywhere, yes it will reach full brightnes faster. One thing to consider is if you are using a probe-start bulb, It needs to hit a specific temp before it will reach full brightness. If you are using a pulse start bulb, it will reach full brightness much faster. The way to tell which type the bulb is: probe start has a 3rd electrode in the bulb that is attached to a heat sensative switch in the outer bulb area. A pulse start bulb has only the 2 electrodes at either end of the bulb. I plan to upgrade to a pulse start soon.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)