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- text/6/4
- When the monitor is turned on
- power flows into the power supply.
- This converts the house current
- into several voltages. Some of
- this power goes to the electron
- gun at the back of the picture
- tube. The gun is always ready to
- fire a stream of electrons at the
- front of the picture tube. The
- inside of the glass at the front
- is coated with a chemical that
- will glow if it is hit by
- electrons. This coating of this
- screen is similar to the coating
- inside a fluorescent light.
-
-
-
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- text/8/138
- To make the electrons hit the
- screen hard and light it up, the
- screen is given a strong positive
- voltage by a transformer called the
- flyback.
-
-
-
- ~
- text/339/4
- There is a wire between the
- circuit board and the electron
- gun that can turn it on and off
- very quickly.
- ~
- text/339/40
-
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- text/337/40
- Around the back of the
- picture tube are some coils of
- wire called the yoke. When
- electricity is flowed into the
- yoke, it creates a magnetic
- field that controls the
- electron beam.
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- text/334/104
- Without the yoke, the
- electron beam would always hit
- the center of the screen. All
- you would ever see is a small
- white dot. The yoke can deflect
- the beam to hit any chosen
- location on the screen.
-
-
-
- ~