[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
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?
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.