What Is a Flyback Television?
A flyback television uses a transformer also known as a line output transformer (LOPT). This is a simple transformer found in devices that use CRT, or cathode ray tube, technology for power.
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Origin of The Word Flyback
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The origins of the term "flyback" can be attributed to the swift way in which the high frequency voltage signal kickstarts the CRT. The manner in which this happens is akin to something that flies back.
Modern Day Flybacks
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Flybacks can be one of several types. Modern day versions have a rectified DC output. The primary windings are not removable as were the older ones.
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How it Works
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A flyback works on a simple principle. It receives a low voltage signal and then converts it into a high voltage signal. This is done on a very high frequency.
Differences Between Flyback and Regular Transformers
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The primary difference between flyback and regular transformers is that flybacks can store created energy in a magnetic circuit. A regular transformer, on the other hand, transmits from one point to another to reduce the need of storing the energy.
Common Symptoms of a Defective Flyback
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A flyback transformer often has a life span of around two years. Some of the common symptoms of a defective flyback are that the monitor does not display anything. Another would be a dip in B+ voltage; also the horizontal output transistor heats to the point of short circuiting.
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References
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Comments
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thanks so much.
