It's a little bit intimidating, with all the choices of projection equipment,
to find the exact bulb you will need for replacing your old one. There are
many types, but only one which is designed for the projector you have. One of the most common for many different brands of
projectors is the EVD projector lamps. Although the use of laptop presentation has
increased over the past decade, there are still millions of humble overhead projectors in use on a daily
basis. There are a wide variety projectors which
use the EVD lamp, and they don't all look at all the same or have the same
function. In fact, some companies who make these
projectors have switched bulbs in the design process from
time to time to get the results they want.
The brightness, as most people call it, needs to be enough to gain good contrasts
of writing or overhead transparencies.
All of the EVD projector lamps regardless of the brand have the same shape
which is a bipin bulb, and on a rare occasion, 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. Almost always, the
voltages vary and the wattage as well. The EVD
projector lamps are 400 watts and 36 volt with a 3200K color temperature. Another thing to remember, because
these have a high light output, that usually means they have a
much shorter life. The life is shorter, about 50 hours, so it's good to turn off the lamp
when it's not being used. Every slice of time you turn off the machine means the lamp will
last longer and you'll be saving money in replacements. These bulbs should not be touched with your skin as the oils can
react with the glass. If they
are touched, the life span of the bulb will be greatly reduced and sometimes you
might see a bubbling of the glass. In case you ever
do touch the bulb, wipe it thoroughly with a soft cloth.
Here's something to keep in mind when replacing these lamps, they are
identified by a 3 letter code on the bulb. You'll see it somewhere
on the back, the base or the top if it's more like a bulb as opposed to a reflector type
lamp. Sometimes you'll see the code as EVD as described here or FXL, DYS,
ENX, DYS, ELH or
something similar to that, you get the 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. We have found that the quality of these
is superior to almost anything else on the market.
In summary, EVD lamps are used specifically for the overhead projector they operate in. Of course, you will need
projectors that will have the correct voltage and capacity
for the projector bulbs that they use. But you will see specifications on
your projector in most cases which will verify the correct lamp. Whatever type of projection lamp you have, you
can get what you need while
getting the most light you can for your money. We have a large inventory
of projector bulbs for nearly every type of lighting application in the field. If
you need help identifying a projector bulb, our customer service
representatives can help you determine what you have, simply give us a call.