Cathode ray tube - Revision history

Jnc: +cat

2018-12-13T15:17:27Z

+cat

Jnc: Avoid redir

2018-10-10T18:39:45Z

Avoid redir

Jnc: better word

2018-10-07T17:31:28Z

better word

Jnc: Mention beam modulation, uses

2018-09-16T14:14:53Z

Mention beam modulation, uses

Jnc: Jnc moved page Cathode Ray Tube to Cathode ray tube over redirect: Generally not caps

2018-09-15T17:53:01Z

Jnc moved page Cathode Ray Tube to Cathode ray tube over redirect: Generally not caps

Jnc: Jnc moved page CRT to Cathode Ray Tube: Full name

2018-06-12T20:40:15Z

Jnc moved page CRT to Cathode Ray Tube: Full name

Jnc: An OK start

2018-06-12T20:39:43Z

An OK start

New page

A '''Cathode Ray Tube''' (usually '''CRT''' for short) is a now-obsolescent display technology that was the mainstay of visual output devices for a century, until displays consisting of [[array]]s of [[Light Emitting Diode|LEDs]], etc, became available economically.

It consists of a large [[vacuum tube]], with a large face covered with a ''phospor'', a phosphorescent powder. An electrode at the base of the neck (back) of the tube produces a beam of [[electron]]s, which are shot into the phosphor; where the beam hits, the phosphor produces a spot of light.

The beam can be scanned across the face by means of [[electrostatic]] or [[magnetic]] control grids through which the electron beam is sent.

← Older revision		Revision as of 15:17, 13 December 2018
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	CRTs were used as displays in a large number of types of devices: oscilloscopes, televisions, [[video terminal]]s, and [[video display]]s.		CRTs were used as displays in a large number of types of devices: oscilloscopes, televisions, [[video terminal]]s, and [[video display]]s.
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		+	[[Category: Device Basics‎‎]]

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 It consisted of a large [[vacuum tube]], with a large face covered with a ''phospor'', a phosphorescent powder. An electrode at the base of the neck (back) of the tube produced a beam of [[electron]]s, which are shot into the phosphor; where the beam hits, the electrons hitting the phosphor produce a spot of light.
-The intensity of the beam could be modulated by a control signal, from fully off to full brightness. The beam could be scanned across the face by means of [[capacitor|capacitative]] or [[magnetic]] control grids, through which the electron beam was sent.
+The intensity of the beam could be modulated by a control signal, from fully off to full brightness. The beam could be scanned across the face by means of [[capacitor|capacitative]] or [[magnetic field|magnetic]] control grids, through which the electron beam was sent.
 CRTs were used as displays in a large number of types of devices: oscilloscopes, televisions, [[video terminal]]s, and [[video display]]s.

@@ Line 1: / Line 1: @@
-A '''Cathode ray tube''' (usually '''CRT''' for short) is a now-obsolete [[display]] technology that was the mainstay of visual output devices for a century, until displays consisting of [[array]]s of [[Light Emitting Diode|LEDs]], etc, became available economically.
+A '''cathode ray tube''' (usually '''CRT''' for short) is a now-obsolete [[display]] technology that was the mainstay of visual output devices for a century, until displays consisting of [[array]]s of [[Light Emitting Diode|LEDs]], etc, became available economically.
 It consisted of a large [[vacuum tube]], with a large face covered with a ''phospor'', a phosphorescent powder. An electrode at the base of the neck (back) of the tube produced a beam of [[electron]]s, which are shot into the phosphor; where the beam hits, the electrons hitting the phosphor produce a spot of light.
-The intensity of the beam could be modulated by a control signal, from fully off to full brightness. The beam could be scanned across the face by means of [[electrostatic]] or [[magnetic]] control grids, through which the electron beam was sent.
+The intensity of the beam could be modulated by a control signal, from fully off to full brightness. The beam could be scanned across the face by means of [[capacitor|capacitative]] or [[magnetic]] control grids, through which the electron beam was sent.
 CRTs were used as displays in a large number of types of devices: oscilloscopes, televisions, [[video terminal]]s, and [[video display]]s.

@@ Line 1: / Line 1: @@
-A '''Cathode Ray Tube''' (usually '''CRT''' for short) is a now-obsolescent display technology that was the mainstay of visual output devices for a century, until displays consisting of [[array]]s of [[Light Emitting Diode|LEDs]], etc, became available economically.
+A '''Cathode ray tube''' (usually '''CRT''' for short) is a now-obsolete [[display]] technology that was the mainstay of visual output devices for a century, until displays consisting of [[array]]s of [[Light Emitting Diode|LEDs]], etc, became available economically.
-It consists of a large [[vacuum tube]], with a large face covered with a ''phospor'', a phosphorescent powder. An electrode at the base of the neck (back) of the tube produces a beam of [[electron]]s, which are shot into the phosphor; where the beam hits, the phosphor produces a spot of light.
+It consisted of a large [[vacuum tube]], with a large face covered with a ''phospor'', a phosphorescent powder. An electrode at the base of the neck (back) of the tube produced a beam of [[electron]]s, which are shot into the phosphor; where the beam hits, the electrons hitting the phosphor produce a spot of light.
-The beam can be scanned across the face by means of [[electrostatic]] or [[magnetic]] control grids through which the electron beam is sent.
+The intensity of the beam could be modulated by a control signal, from fully off to full brightness. The beam could be scanned across the face by means of [[electrostatic]] or [[magnetic]] control grids, through which the electron beam was sent.

← Older revision	Revision as of 17:53, 15 September 2018
(No difference)

← Older revision	Revision as of 20:40, 12 June 2018
(No difference)