It's a wide world of projection equipment and not only do projection lamps
have use in projectors for presentation, but they also
have some application for industrial machines or viewers. One of the most
common for many different brands of projection equipment and inspection viewing is the
EJV projector lamps. Although the needs of
computer based presentation has increased recently, there are still many
applications of overhead projectors in use everyday. The need for simple visual communication
with a manual pen will still be needed far into the future. There are a wide variety projectors which
use the EJV lamp, and they all have the same exact function. The main purpose for a bulb like
this is the light it puts on a screen, how well it fills out the viewing area or screen space.
The brightness, as most people call it, needs to be enough to gain good contrasts
of objects, writing or overhead transparencies.
All of the EJV projector lamps regardless of the brand, have the same shape, and sometimes the
exact same shape of another lamp which might have a different voltage or wattage.
That's one of the reasons they're not interchangeable. The EJV
projector lamps are part of the variety of lamps which are 150 watts and 21 volt,
like it's similar cousin, the EKE bulb. Something to remember is because
these have a high light output, that usually means they have a
much shorter life. The life is shorter, the rating is only 100 hours, so it's good to turn off the lamp
when it's not in use. Every instance of time you don't have it on means the lamp will
last longer in the projection equipment you have. Another caution is that these bulbs should not be touched with your skin.
The skin oils can
react with the glass and there can be some reactions which will shorten the lamp
life. If they
are touched, you might see a bubbling of the glass over time, but it's not
instantaneous. If you do touch it, simply wipe it thoroughly with a soft cloth.
When replacing these, please note that they are
identified by a 3 letter code on the bulb itself. You'll see it somewhere
on the back or the top if it's more like a bulb as opposed to a reflector type
lamp. Sometimes you'll see the code as EJV as described here or ENX, FXL,
DAY, DYS, EVD, ELH or
something similar to that, you get the basic idea. The ANSI 3 letter code identifies that bulb as to the
shape, wattage, voltage and any other standard information. Unlike other
types of bulbs, these have some standards across various manufacturers, the only
thing that varies is quality. We have two of the best manufacturers of all
types which are Sylvania and Eiko.
In summary, EJV lamps are used specifically for the machine or overhead projector they
are made to operate with. Of course, you will need
projectors that will have the correct voltage
for the projector bulbs. Whatever type of projection lamp you have, you
can get what you need while
getting the best quality possible from manufacturers we know and trust. We have a large inventory
of projector bulbs for nearly every type of lighting application in the field. If
you need help identifying a bulb, our customer service
representatives can help you determine what you have.