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Re: MH voltage


I know the "in" is different, what I want to know is the "out" to the 
bulb.  Is the out the same for 110 and 220 ballast types?  Can you use the 
same bulb in both systems?


At 03:48 AM 9/4/99 -0400, you wrote:
>Date: Fri, 03 Sep 1999 16:08:24 -0400
>From: Michael Dubinovsky <mikluha at ix_netcom.com>
>Subject: Re: Aquatic Plants Digest V3 #1249
> >Date: Wed, 01 Sep 1999 12:55:37 +0800
> >From: Alfred Heng <alheng at pacific_net.sg>
> >Subject: MHD lights
> >
> >I have a question about MHD lamps.  The set up consist of a ballast,
> >capacitor and an igniter , them the actual bulb or lamp.  Do the 110v and
> >220v systems use the same bulbs?  Does going thru all the ballast and stuff
> >change the voltage or output to a set level making all the bulbs workable
> >in 110v and 220v systems?
> >
> >Does anyone out there know?
> >
> >Also would 5000K MHD bulbs be sufficient for planted tanks if you had  a
> >2-4 watt ratio?
> >
> >Alfred
> >
>Most today ballasts use a transformer (constant wattage ballast, etc) with
>different primary winding - for 110V, 208V, etc. So, all you have to do is
>just connect everything properly.