Metal Halide Terminology
- Thread starter oppajer
- Start date
DE means double-ended
bulbs are either that or they are
mogul, which means screw-in.
I think HQI is a brand name in Europe; it is frequently used in the US to describe DE bulbs, but sometimes refers to any halide bulb.
I'll let someone else take pulse-start....
bulbs are either that or they are
mogul, which means screw-in.
I think HQI is a brand name in Europe; it is frequently used in the US to describe DE bulbs, but sometimes refers to any halide bulb.
I'll let someone else take pulse-start....
Yup, DE is double ended and describes any metal halide that has double ended sockets (small bulbs).
Moguls are the common single-ended sockets used, around the size of regular light bulbs you use in the home (different socket though, so don't try a MH in one
)
There's also a medium socket that is single-ended and smaller in size then the moguls. Mediums are much more rare.
HQI is a term that was originally patented by Osram of Europe to describe a specific type of MH technology, but it has since been used to descibe anything that is DE. Most of the "HQI" systems aren't true HQI, but the moniker has stuck and so everyone assumes HQI just means DE.
Pulse start is a specific type of ballast technology that uses an ignitor + ballast to start a bulb. They're all designated ANSI number M13x (replace x with different numbers for different wattages). Most MH sold are PROBE-start (ANSI M5x series), but some have suggested pulse-start is the far better way to light certain bulbs. For example, european/german bulbs usually don't have a starting probe in the bulb so they really should be operated with pulse-start ballasts. However, most people use standard probe-start ballasts to fire them up. It works, but just not as well.
Lighting is REALLY confusing, I know. Let me know if you have any more questions.
Moguls are the common single-ended sockets used, around the size of regular light bulbs you use in the home (different socket though, so don't try a MH in one
)There's also a medium socket that is single-ended and smaller in size then the moguls. Mediums are much more rare.
HQI is a term that was originally patented by Osram of Europe to describe a specific type of MH technology, but it has since been used to descibe anything that is DE. Most of the "HQI" systems aren't true HQI, but the moniker has stuck and so everyone assumes HQI just means DE.
Pulse start is a specific type of ballast technology that uses an ignitor + ballast to start a bulb. They're all designated ANSI number M13x (replace x with different numbers for different wattages). Most MH sold are PROBE-start (ANSI M5x series), but some have suggested pulse-start is the far better way to light certain bulbs. For example, european/german bulbs usually don't have a starting probe in the bulb so they really should be operated with pulse-start ballasts. However, most people use standard probe-start ballasts to fire them up. It works, but just not as well.
Lighting is REALLY confusing, I know. Let me know if you have any more questions.
HQI =(Halogen Quartz Iodine) The bulb is made made out of Quartz glass with small quantities of Halogen gas inside. It is my understanding that Halogen represents Iodine, Fluorine, Chlorine, and Bromine gasses.
Pulse Start I believe is a ballast that will fire halide bulbs up slowly in order to decrease energy consumption, increase output, and bulb life.
Pulse Start I believe is a ballast that will fire halide bulbs up slowly in order to decrease energy consumption, increase output, and bulb life.
Sponsor Reefs
We're a FREE website, and we exist because of hobbyists like YOU who help us run this community.
Click here to sponsor $10:
