Over the previous 25 years I’ve had the distinctive alternative to speak straight with lots of the professionals and instructors who use Overhead Projectors as an integral a part of their career. The tales they’ve shared with me have given me direct perception to a number of the commonest issues skilled by house owners of right now’s and yesterday’s Overhead Projectors.

I want to share this distinctive compilation of data with a sequence of articles derived straight from a number of the commonest questions and complaints that I obtain from my shoppers within the Audio Visible Trade.

The very first thing that involves my thoughts is the query that I’m requested nearly on daily basis; “My Overhead Projector retains blowing lamps, what might be the issue?”

Most of right now’s Overhead Projectors use projection lamps that require 82 volts to function. As a result of the AC outlet that you simply plug your Overhead Projector into is 120 volts, a particular digital part is required to create the 82 volts wanted to function the projection lamp. This digital part known as a diode (rectifier).

When the diode (rectifier) of your Overhead Projector turns into faulty, it permits the road voltage of 120 volts to go on to the 82 volt lamp. This extra voltage is an excessive amount of for the projection lamp to deal with, when the person turns the overhead projector on, the projection lamp will burn out in a matter of seconds as a result of this extreme voltage. In some circumstances the top person will place a number of new lamps into the Overhead Projector earlier than they notice that the issue will not be a faulty projection lamp.

In case you have a fundamental data of Electronics or fundamental wiring the diode is one thing that almost all finish customers can substitute themselves, in any other case this drawback ought to be dealt with by an expert service technician.


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