What is the Distinction Between a Thermal Fuse and a Thermal Swap?

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. Via these interactions I’ve amassed notes and data that has impressed me to put in writing these articles that pertain to among the most typical issues skilled by homeowners of in the present day’s and yesterday’s Overhead Projectors. That is the sixth article in a sequence of articles that might be written from knowledgeable Electronics Technicians viewpoint with reference to a few of in the present day’s most typical Overhead Projector issues. This text will cowl the distinction between a thermal fuse and a thermal swap.

Let’s begin with the thermal fuse. In lots of instances the producer will place a thermal fuse within the electrical circuit of your Overhead Projector to guard the projector from injury as a result of extreme warmth.

How the thermal fuses works is relatively easy in nature. The fuse is rated a selected temperature score pre decided by the producer. If for some purpose the cooling system in your overhead projector fails the thermal fuse will open as soon as it has reached the pre-determined temperature, shutting the facility off to the projection lamp.

As soon as the thermal fuse has carried out its job, it’s going to have to be changed, because it can’t be reset.

I’m typically requested if this thermal fuse may be bypassed as an alternative of being changed. Sure it may well, however our recommendation is to not by-pass this necessary security characteristic of your Overhead Projector. Saving a number of {dollars} now may value you much more sooner or later with out this necessary security gadget.

Thermal switches carry out a unique operate in your Overhead Projector. The thermal swap we consult with right here is used to manage the cooling system of the Overhead Projector. The thermal swap stays in an open state (no present movement) till it reaches a pre decided temperature, at which era the thermal swap closes and makes {an electrical} circuit permitting the cooling fan to function. When the Overhead Projector is turned off the fan will proceed to run till the unit cools off sufficient to let the thermal swap open again up turning the fan off.

Each of those digital parts are an integral a part of your Overhead Projector and needs to be changed by knowledgeable Digital Technician.

Supply by Mark Boehm

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