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The plate must dissipate heat created when the electrons hit it with a high velocity after being accelerated by the voltage between the plate and cathode. Most of the waste power used in a vacuum tube is dissipated as heat by the plate. In low power tubes it is usually given a black coating, and
73:. It is usually made of sheet metal, connected to a wire which passes through the glass envelope of the tube to a terminal in the base of the tube, where it is connected to the external circuit. The plate is given a positive
128:
could be absorbed by other electrodes such as grids in the tube, resulting in a current out of the plate. This current could cause the plate circuit to have
279:
81:. Although it is sometimes a flat plate, it is more often in the shape of a cylinder or flat open-ended box surrounding the other electrodes.
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231:, Howard W. Sams, Indianapolis, USA 1960, Library of Congress card no. 60-13843, available on the Internet Archive. Chapter 1
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often has "fins" to help it radiate heat. In power vacuum tubes used in radio transmitters, it is often made of a
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1607:
265:
136:. To prevent this most plates in modern tubes are given a chemical coating which reduces secondary emission.
38:
tube widely used in audio amplifiers in 1960s era radios and televisions, and still used in guitar amplifiers
120:; electrons striking the plate could knock other electrons out of the metal surface. In some tubes such as
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171:– Thermionic emission and vacuum tube theory, using introductory college-level mathematics.
8:
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254:, 1953 (4th Edition). Contains chapters on the design and application of receiving tubes.
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238:
Shiers, George, "The First
Electron Tube", Scientific American, March 1969, p. 104.
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https://web.archive.org/web/20101007201649/http://pentalabs.com/tubeworks.html
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245:, Ziff Publishing, 1943, (reprint 1994 Prompt Publications), p. 30–83.
218:, Radio Constructor (See particularly the section "Glass Base Construction")
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that projects through the glass or ceramic tube envelope and is cooled by
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183:. Fleming discovers the thermionic (or oscillation) valve, or 'diode'.
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Cutaway diagram of a triode vacuum tube, showing the plate (anode)
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The
Thermionic Detector – HJ van der Bijl (October 1919)
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205:"Electrical Indicator", Issue date: 1884
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1670:This electronics-related article is a
16:Type of electrode used in vacuum tubes
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261:
181:The invention of the thermionic valve
109:
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712:Three-dimensional integrated circuit
229:Getting the most out of vacuum tubes
114:A problem in early vacuum tubes was
493:Programmable unijunction transistor
13:
394:Multi-gate field-effect transistor
14:
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372:Insulated-gate bipolar transistor
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616:Heterostructure barrier varactor
343:Chemical field-effect transistor
664:Mixed-signal integrated circuit
84:
221:
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53:for vacuum tube, showing plate
1:
251:Radiotron Designer's Handbook
187:
160:– The history of vacuum tubes
132:, which could cause unwanted
1674:. You can help Knowledge by
695:Silicon controlled rectifier
557:Organic light-emitting diode
447:Diffused junction transistor
169:How vacuum tubes really work
7:
499:Static induction transistor
436:Bipolar junction transistor
388:MOS field-effect transistor
360:Fin field-effect transistor
139:
10:
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706:Static induction thyristor
65:in Britain, is a type of
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875:(Hexode, Heptode, Octode)
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627:Hybrid integrated circuit
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470:Light-emitting transistor
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306:
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98:. and is part of a large
1472:Backward-wave oscillator
922:Backward-wave oscillator
632:Light emitting capacitor
488:Point-contact transistor
458:Junction Gate FET (JFET)
933:Crossed-field amplifier
452:Field-effect transistor
243:Saga of the Vacuum Tube
106:, forced air or water.
1346:Theoretical principles
1102:Voltage-regulator tube
669:MOS integrated circuit
534:Constant-current diode
510:Unijunction transistor
216:The Story of the Valve
134:parasitic oscillations
54:
39:
24:
1502:Inductive output tube
1171:Electrolytic detector
944:Inductive output tube
760:Low-dropout regulator
675:Organic semiconductor
606:Printed circuit board
442:Darlington transistor
289:Electronic components
69:that forms part of a
45:
30:
22:
1644:List of tube sockets
1639:List of vacuum tubes
1477:Beam deflection tube
989:Beam deflection tube
658:Metal oxide varistor
551:Light-emitting diode
405:Thin-film transistor
366:Floating-gate MOSFET
177:– FAQ from rec.audio
1562:Traveling-wave tube
1353:Thermionic emission
965:Traveling-wave tube
765:Switching regulator
601:Printed electronics
578:Step recovery diode
355:Depletion-load NMOS
214:C H Gardner (1965)
202:U.S. patent 307,031
175:The Vacuum Tube FAQ
130:negative resistance
126:secondary electrons
1270:Crystal oscillator
1130:Variable capacitor
805:Switched capacitor
747:Voltage regulators
621:Integrated circuit
505:Tetrode transistor
483:Pentode transistor
476:Organic LET (OLET)
463:Organic FET (OFET)
117:secondary emission
110:Secondary emission
55:
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31:The plate from an
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1731:Electronics stubs
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1591:Numbering systems
1572:Video camera tube
1557:Talaria projector
1339:Thermionic valves
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1265:Ceramic resonator
1077:Mercury-arc valve
1029:Video camera tube
981:Cathode-ray tubes
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349:Complementary MOS
227:Robert B. Tomer,
199:Thomas A. Edison
104:radiation cooling
61:, usually called
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1462:Cathode-ray tube
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755:Linear regulator
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1721:Vacuum tubes
1676:expanding it
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1547:Storage tube
1441:Beam tetrode
1382:
1373:Control grid
1368:Space charge
1052:Cold cathode
1019:Storage tube
909:Vacuum tubes
858:Neutron tube
833:Beam tetrode
815:Vacuum tubes
400:Power MOSFET
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85:Construction
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58:
56:
1552:Sutton tube
1363:Hot cathode
1218:Transformer
960:Sutton tube
800:Charge pump
653:Memory cell
583:Zener diode
545:Laser diode
428:transistors
310:transistors
71:vacuum tube
1726:Electrodes
1715:Categories
1567:Trochotron
1497:Iconoscope
1487:Compactron
1482:Charactron
1426:Acorn tube
1290:reed relay
1280:Parametron
1213:Thermistor
1191:resettable
1150:Connector
1111:Adjustable
1087:Nixie tube
1057:Crossatron
1024:Trochotron
999:Iconoscope
994:Charactron
971:X-ray tube
843:Compactron
823:Acorn tube
780:Buck–boost
701:Solaristor
563:Photodiode
540:Gunn diode
536:(CLD, CRD)
318:Transistor
188:References
96:molybdenum
1532:Phototube
1527:Monoscope
1522:Magnetron
1517:Magic eye
1507:Kinescope
1451:Pentagrid
1253:Capacitor
1097:Trigatron
1092:Thyratron
1082:Neon lamp
1009:Monoscope
889:Phototube
873:Pentagrid
838:Barretter
723:Trancitor
718:Thyristor
643:Memristor
568:PIN diode
345:(ChemFET)
100:heat sink
75:potential
67:electrode
1632:Examples
1512:Klystron
1492:Eidophor
1467:Additron
1431:Nuvistor
1275:Inductor
1245:Reactive
1223:Varistor
1203:Resistor
1181:Antifuse
1067:Ignitron
1062:Dekatron
950:Klystron
939:Gyrotron
868:Nuvistor
785:Split-pi
671:(MOS IC)
638:Memistor
396:(MuGFET)
390:(MOSFET)
362:(FinFET)
140:See also
122:tetrodes
49:used in
1623:Russian
1446:Pentode
1436:Tetrode
1176:Ferrite
1144:Passive
1135:Varicap
1123:digital
1072:Krytron
894:Tetrode
879:Pentode
733:Varicap
714:(3D IC)
690:RF CMOS
594:devices
368:(FGMOS)
299:devices
79:cathode
36:pentode
1457:Nonode
1421:Triode
1416:Audion
1393:Getter
1208:Switch
899:Triode
863:Nonode
828:Audion
708:(SITh)
592:Other
559:(OLED)
521:Diodes
472:(LET)
454:(FET)
426:Other
374:(IGBT)
351:(CMOS)
338:BioFET
333:BiCMOS
124:these
1603:RETMA
1411:Diode
1403:Types
1383:Anode
1285:Relay
1258:types
1196:eFUSE
967:(TWT)
955:Maser
946:(IOT)
935:(CFA)
924:(BWO)
848:Diode
795:SEPIC
775:Boost
728:TRIAC
697:(SCR)
660:(MOV)
634:(LEC)
553:(LED)
512:(UJT)
501:(SIT)
495:(PUT)
438:(BJT)
407:(TFT)
383:LDMOS
378:ISFET
146:Anode
94:like
63:anode
59:plate
1672:stub
1228:Wire
1186:Fuse
770:Buck
623:(IC)
611:DIAC
547:(LD)
416:UMOS
411:VMOS
328:PMOS
323:NMOS
308:MOS
248:RCA
33:EL84
1618:JIS
1598:RMA
790:Ćuk
1717::
1164:RF
913:RF
57:A
1703:e
1696:t
1689:v
1678:.
1331:e
1324:t
1317:v
915:)
911:(
281:e
274:t
267:v
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