Vacuum Tube Body of Knowledge

Preliminary List of Terms

A preliminary list of terms relating or related to vacuum tubes has been assembled over a 2+ year period. The next stage in the project will be to create definitions and notes for all terms. This project will result in the publication of a comprehensive vacuum tube glossary. Viewers are invited to help us confirm or correct terms, add or subtract terms, etc. Please submit your help and corrections to vtbok@themuseums.org.

1. AF
2. AF amplifier
3. Absorption
4. AC bridge
5. AC mains
6. AC transformer
7. AC/DC
8. AC/DC series heater
9. Accelerator
10. Acorn
11. Acorn glass envelope
12. Acorn UHF triode
13. AF amplifier
14. AF modulator
15. AF Power pentode
16. AF RF oscillator
17. Air-cooled
18. All-glass
19. All-glass miniature
20. All-glass valves fitted with (BG) bases
21. All-glass VHF/UHF power
22. All-metal tube
23. AM detector
24. AM detector diode
25. AM EF Z Sharp-cutoff RF pentode
26. AM/FM
27. Ampex video recorder
28. Amplification
29. Amplification factor
30. Amplifier
31. Amplifier submarine repeaters
32. Amplifier telegraphy
33. Amplifier tube
34. Amplifiers instrumentation
35. Analog
36. Analog color TV receiver
37. Anode
38. Anode dissipation
39. Anode voltage
40. Anode voltage rectifier
41. Anodyne anode-dynode beam-deflection amplifier
42. Anti-transmit/receive cell
43. Anti-transmit-receive
44. Arcing
45. Argon-filled full-wave gas rectifier
46. Atomic clock
47. ATR
48. ATR cell
49. ATR switch
50. ATR switch microwave
51. Audio amplifier
52. Audio beam tetrode
53. Audio output
54. Audio output beam power tetrode
55. Audio output pentode
56. Audio output tube
57. Audio Pentode
58. Audio power amplifier
59. Audio power output pentode
60. Audio power pentode
61. Audio preamplifier
62. Audio test
63. Audio triode pentode
64. Audio TV vertical output
65. Audion
66. Audiophile
67. Audiotron
68. Autonomous cathode
69. AVC
70. AVC bias
71. AVC rectifier
72. Average
73. Backward wave
74. Backward wave oscillator
75. Backward-wave amplifier
76. Ballast tube
77. Band
78. Barometer
79. Barretter
80. Barretter photoresistor
81. Battery
82. Battery radio
83. Battery types
84. Bayard-Alpert ion vacuum gauge
85. Bayard-Alpert ionization gauge
86. Beam deflection tube
87. Beam power
88. Beam power amplifier
89. Beam power pentode
90. Beam power receiving tube
91. Beam power tetrode
92. Beam power transmitting tube
93. Beam power tube
94. Beam switch counter
95. Beam switch counting
96. Beam switch device
97. Beam switch selector -stage
98. Beam switch wide-band noise source
99. Beam switch
100. Beam switching
101. Beam tetrode
102. Beam tetrode anode cap
103. Beam-deflection heptode
104. Beam-power pentode
105. Beam-switch demultiplexer
106. Beam-switch pulse generator
107. Beam-switching tube
108. BG base
109. Bidecal
110. Bidirectional counter
111. Bigrid amplifier
112. Bimetal
113. Binary adder tube
114. Binary counter
115. Binary indicator
116. Binary switching tube
117. Blemish standard
118. Bluetooth
119. Bolometer
120. Borrow cathode
121. Bourdon gage
122. Braun tube
123. Braun-Ryan tube
124. British pin base
125. Broadband power pentode
126. Broadband spectrophotometer
127. Broadcast
128. Bulb
129. Button
130. BWO
131. Cable
132. Cables
133. Caesium-antimony cathode
134. Caesium-on-oxidated-silver cathode
135. Camera tube
136. Camera tube image converter
137. Capillary
138. Car radio tubes
139. Carbon
140. Carry cathode
141. Cartridge diode
142. Cascade
143. Cascading
144. Cascode circuit
145. Cassette
146. Cathode follower
147. Cathode heated by electron bombardment
148. Cathode heated by ion bombardment
149. Cathode potential
150. Cathode ray
151. Cathode ray charge storage tube
152. Cathode ray tube
153. Cathode ray tube, oscilloscope
154. Cathode ray tube, radar indicator
155. Cathode ray tube, television
156. Cathode subminiature
157. Cathode-coupled flip-flop
158. Cathode-ray charge storage
159. Cathode-ray discharge
160. Cathode-ray display
161. Cat’s-eye
162. Cavity
163. Cell Q-band
164. Ceramic
165. Ceramic envelope
166. Ceramic radial-beam pentode forced air cooled
167. Ceramic tetrode
168. Ceramic tetrode forced-air cooled
169. Ceramic triode forced air cooled
170. Ceramic triode water cooled
171. Ceramic UHF triode forced-air cooled
172. Cermet microwave triode
173. Character generating cathode ray tube
174. Chronotron
175. Civil Defense
176. Class-A
177. Class-A audio driver
178. Class-B
179. Class-B power output
180. Class-C
181. Class-C oscillator/amplifier
182. Class-C transmitter oscillator/amplifier
183. Classifications for bases
184. Classifications for connection methods
185. Classifications for pin counts
186. Classifications for the number of electrodes:
187. Classifications of active elements in tubes
188. Clipperrectifier
189. CM-band
190. Coaxial
191. Coaxial power triode
192. Code
193. Coil vacuum sealed
194. Cold cathode
195. Cold cathode character display tube
196. Cold cathode counter display tube
197. Cold cathode Crookes tube
198. Cold cathode fluorescent lamp
199. Cold cathode gas diode
200. Cold cathode indicator tube
201. Cold cathode ion x-ray tube
202. Cold cathode rectifier valve
203. Cold cathode trigger
204. Cold-cathode Nuvistor
205. Cold-cathode SQ tube
206. Cold-cathode tube
207. Cold-cathode water vapor discharge tube
208. Color TV receiver
209. Combined diode-pentode
210. Combined triode-diode
211. Combined triode-hexode triode-heptode
212. Combined triode-octode
213. Combined triode-pentode
214. Combustion
215. Common-cathode counter
216. Common-cathode pair
217. Compactron
218. Compactron dual triode
219. Compactron high-mu dual diode
220. Compactron high-mu dual triode
221. Compactron high-mu triple triode
222. Compactron pentode
223. Compactron Triple triode
224. Complex wave generator
225. Component
226. Composite
227. Computer counter trigger
228. Computer counter triode gas
229. Computer monitor
230. Computer rated
231. Computer tube
232. Condenser
233. Conduction cooled
234. Conductive coating
235. Conelrad
236. Console radio
237. Contact potentials
238. Continuous wave
239. Continuously transmitting tube
240. Control grid
241. Controllable gas diode
242. Conversion mixer
243. Conversion oscillator
244. Converter
245. Cooled anode transmitter
246. Coolidge tube
247. Co-planar triode
248. Corona discharge tube
249. Corona high-voltage regulator
250. Corona voltage regulator
251. Counter
252. Counter / selector
253. Counter tube
254. Counter/selector
255. Counter/timer
256. Counting indicator
257. Counting tube
258. Cross field amplifier
259. Crossed-field amplifier
260. CRT
261. CRT digital mass memories
262. CRT dual gun
263. CRT indicator
264. CRT lock-in base
265. CRT oscilloscope
266. CRT oscilloscope distributed deflection
267. CRT oscilloscope dual beam
268. CRT radar magnetic deflection
269. CRT ruggedized
270. Crystal rectifiers
271. Current
272. Current limited diodes
273. Current limited diodes noise generator
274. Current regulator
275. Current stabilizers
276. Custom triode
277. Customized heater
278. CV Power triode
279. Cyclotron
280. Cyclotron resonance maser
281. Cylindrical glass
282. Cylindrical glass envelope
283. Cylindrical octal
284. Damper diode
285. Damper/efficiency diode
286. Dark current
287. DC current
288. DC filament
289. DC-coupled power triode
290. Decade counter
291. Deflection amplifier
292. Deflection screen
293. Dekatron
294. Delay line
295. Detector
296. Detector diode
297. Detectors
298. Dielectric
299. Digital indicator
300. Diheptal
301. Diode
302. Diode damper HV
303. Diode detector
304. Diode noise generator
305. Diode pentode
306. Diode plates
307. Diode rectifier
308. Diode rectifier clipper
309. Diode rectifier full wave
310. Diode rectifier mercury
311. Diode sharp-cutoff pentode
312. Diode UHF
313. Diode UHF micropup
314. Diode UHF pencil
315. Diode UHF power oil-can
316. Diode UHF TR switch
317. Diode voltage reference
318. Diodes
319. Dip
320. Directly heated
321. Directly heated beam power tetrode
322. Directly heated dual AF (push-pull) power pentode
323. Directly heated high-mu triode
324. Directly heated low-mu RF triode
325. Directly heated oxide-coated filament
326. Directly heated power triode
327. Directly heated remote-cutoff RF tetrode
328. Directly heated RF power pentode
329. Directly heated sharp-cutoff RF tetrodebase
330. Directly heated thoriated tungsten filament
331. Directly heated triode-heptode mixer
332. Directly heated tungsten filament
333. Discharge
334. Disc-seal construction
335. Disk-seal planar UHF power triode
336. Displacement sensor
337. Displacement vibration sensors
338. Display
339. Display cathode count
340. Display/Indicator
341. Distortion
342. Doherty configuration
343. Door-knob tube
344. Double diode
345. Double electrostatic deflection
346. Double pentode
347. Double tetrode
348. Double triode
349. Double-diode high-mu triode
350. Double-diode semiremote-cutoff pentodes
351. Double-diode sharp-cutoff pentode
352. Drawn
353. Driver
354. Driver triode
355. Dry-cell
356. Dual anode top cap
357. Dual audio and RF triode
358. Dual beam amplifier low voltage
359. Dual beam power tube
360. Dual class-b power triode
361. Dual detector diode
362. Dual detector diode medium-mu triode
363. Dual diode
364. Dual diode and remote-cutoff pentode
365. Dual diode detector
366. Dual diode high-mu triode
367. Dual diode high-mu triode miniature version
368. Dual diode medium-mu triode
369. Dual diode octal base
370. Dual diode/high-mu triode
371. Dual getter
372. Dual high-mu triode
373. Dual low-mu triode
374. Dual medium-mu triode
375. Dual medium-mu triode loctal version
376. Dual pentode
377. Dual power pentode
378. Dual power tetrode
379. Dual power triode
380. Dual rectifier diode
381. Dual RF triode
382. Dual shielded triode indirectly heated
383. Dual small signal diode
384. Dual transmitting triode
385. Dual triode
386. Dual triode high-rel AU
387. Dual Triode Medium g
388. Dual Triode with internal shield
389. Dual-anode pentode
390. Dual-sensitivity tuning indicator
391. Dual-tetrode-style pentagrid converter
392. Dual-transmit-receive
393. Duodecal
394. Duplex
395. Duplex diode sharp-cutoff pentode
396. DV Medium-mu Nuvistor triode
397. Dynamic speaker
398. Dynatron
399. Dynode
400. Earthed center-tapped secondary
401. EHF transmitter
402. Electric arc shock
403. Electrical discharge lamps
404. Electrical output
405. Electrode support
406. Electrolytic
407. Electromagnetic CRT
408. Electromagnetic testing
409. Electro-medical
410. Electrometer
411. Electrometer amplifier
412. Electrometer Triode
413. Electrometer tube
414. Electrometer tube vacuum gauge
415. Electron microscope
416. Electron multiplier
417. Electron ray indicator
418. Electronic flash tube
419. Electron-ray
420. Electron-ray indicators
421. Electrostatic
422. Electrostatic cathode-ray
423. Electrostatic CRT
424. Electrostatic deflection
425. Electrostatically controlled
426. Encapsulation
427. ETL computing tube
428. Evaporator
429. Exceptionally long service life
430. Exode
431. Experimentals
432. Eye tube
433. FM quadrature detector
434. Fast-wave
435. Fast-wave electron
436. Filament
437. Filament rating
438. Filament tube
439. Filament voltage
440. Filamentary cathode
441. Final amplifier
442. Finebeam tube
443. First AF stage
444. First detector
445. Flakeless mica spacers
446. Flash Tube
447. Flash tube lamps
448. Flash-over
449. Flat wire-ended pencil tube
450. Flatness
451. Fleming valve
452. Flip-flop
453. Flow calibration
454. Fluorescent
455. Fluorescent lamp
456. Fluxing
457. Flying-spot scanner
458. FM discriminator
459. FM ratio detector
460. FM receivers
461. FM RF amplifier
462. FM RF converter
463. Forced-air cooled
464. Forced-air cooling
465. Forward wave
466. Four-diode bridge rectifier
467. Free electron laser
468. Free-air convection
469. Frequency changer
470. Frequency divider
471. Frequency meter
472. Frequency multiplier
473. Frequency selection
474. Full wave gas rectifier
475. Full wave rectifier
476. Full wave vacuum rectifier
477. Full-wave rectifier
478. Full-wave rectifier octal base
479. Fully shielded
480. Gain
481. Gain group denotations
482. Gamma ray detector
483. Gas
484. Gas diode
485. Gas discharge
486. Gas discharge systems
487. Gas electron
488. Gas laser
489. Gas noise generator
490. Gas pressure measuring
491. Gas rectification
492. Gas sampling
493. Gas switching
494. Gas thyratron tetrode
495. Gas thyratron triode
496. Gas triode
497. Gaseous rectifier
498. Gas-filled
499. Gas-filled cold cathode tube
500. Gas-filled cold-cathode
501. Gas-filled cold-cathode transmit/receive tube
502. Gas-filled full-wave rectifier
503. Gas-filled half-wave rectifier
504. Gas-filled indirectly heated tetrode thyratrons
505. Gas-filled phototube blue sensitive
506. Gas-filled phototube daylight sensitive
507. Gas-filled phototube IR sensitive
508. Gas-filled phototube red sensitive
509. Gas-filled phototube spectral S response
510. Gas-filled radiation detector
511. Gas-filled rectifier
512. Gas-filled regulator
513. Gas-filled tetrode thyratron
514. Gas-filled thyratron
515. Gas-filled triode
516. Gas-filled triode thyratron
517. Gas-filled tube
518. Gas-switching
519. Gated-beam discriminator pentode
520. Gauge
521. Geiger counter
522. Geiger counter tube
523. Geiger Müller
524. Geiger-Müller counter tube
525. Geissler
526. General-purpose triode pentode
527. Germanium
528. Glass beam power tetrode
529. Glass beam tetrode
530. Glass envelope
531. Glass envelope planar tube
532. Glass power pentode
533. Glass radial-beam pentode
534. Glass radial-beam power pentode
535. Glass VHF beam power tetrode
536. Glass-metal envelope with disc
537. Glow
538. Glow lamps
539. Glow modulator
540. Glow modulator tube
541. Glowing anode
542. Glow-tube regulator
543. GM tube
544. Gnome tube
545. Goliath base
546. Graphic indicator numerical indicator
547. Grid leak detector
548. Grid-controlled
549. Gridded
550. Grid-leak detector
551. Gridless oscillator
552. Guitar amplifier
553. Gyro klystron
554. Gyro traveling wave
555. Gyro twystrons
556. Gyrotron
557. Gyrotron backward wave oscillator
558. Half-indirectly heated hydrogen triode thyratrons
559. half-indirectly heated tube
560. Half-wave
561. Half-wave gas rectifier
562. Half-wave mercury-vapor rectifier
563. Half-Wave Rectifier
564. Half-wave rectifier miniature
565. Ham radio
566. Hard modulator
567. Hard switching tube
568. Hearing aid
569. Heat exchanger
570. Heater
571. Heater cathode type medium-mu triode
572. Heater power rating
573. Heater rating
574. Heater supply
575. Heater voltage
576. Heil oscillators
577. Heil tube
578. Helical
579. Helix or other integral cooler
580. Helix traveling-wave tube
581. Heptode
582. Heptode mixer
583. Heptode with a passivated third grid
584. Hexode
585. Hexode receiving VHF
586. Hexode/heptode and triode
587. High frequency diode
588. High frequency diode with indirectly heated cathode
589. High frequency tube
590. High Gm power pentode
591. High peak
592. High resolution
593. High slope
594. High vacuum
595. High vacuum electro-optical devices
596. High vacuum rectifier
597. High voltage beam triode
598. High voltage meter
599. High voltage shunt regulator
600. High-efficiency oxide coated filamentary cathode
601. Higher conversion transconductance
602. High-frequency triode
603. High-impedance signal triode
604. High-mu dual triode
605. High-mu power triode
606. High-mu triode
607. High-mu triode dual detector diode
608. High-mu twin triode
609. High-mu UHF triode
610. High-powered beam tetrode
611. High-rel
612. High-rel full-wave rectifier
613. High-rel tube
614. High-rel variant
615. High-speed circuit switching
616. High-speed MHz counter
617. High-vacuum
618. High-vacuum full-wave rectifier
619. High-vacuum half-wave rectifier
620. High-voltage rectifier diode
621. Hi-mu triode octal base
622. Hi-rel
623. Home radio set
624. Horizontal Deflection Output tube
625. Horizontal-deflection amplifier
626. Horizontal-output transformer
627. Hot cathode
628. Hot cathode air-cooled rectifier valves
629. Hot cathode air-cooled x-ray
630. Hot cathode gas diode
631. Hot cathode oil-immersed tube
632. Hot-wire thermal relays
633. HV rectifier
634. Hydrogen filling
635. Hydrogen thyratron
636. Hydrogen thyratron tetrode
637. Hydrogen thyratron triode ceramic
638. hydrogen thyratrons
639. IF
640. IF amplifier
641. IF amplification stage
642. IF amplifier
643. IF stage
644. Iconoscope
645. Ignition
646. Ignition voltage
647. Ignitron
648. Image converter
649. Image intensifier or image converter
650. Image orthicon
651. Image orthicon TV camera tube
652. Image storage tube
653. Image vidicon
654. Imaging tube
655. Impedance
656. Impulse tube
657. Increased reliability
658. Indian head test pattern
659. Indicator
660. Indicator Tube
661. Indirectly heated
662. Indirectly heated argon triode thyratron negative starter
663. Indirectly heated beam power tetrode with anode top cap
664. Indirectly heated common cathode
665. Indirectly heated common-cathode dual diode
666. Indirectly heated common-cathode dual triode
667. Indirectly heated common-cathode triode
668. Indirectly heated double detector diode
669. Indirectly heated full-wave rectifier
670. Indirectly heated half-wave rectifier
671. Indirectly heated heptode pentagrid converter
672. Indirectly heated hexode monoscope
673. Indirectly heated or unipotential cathode
674. Indirectly heated oxide-coated cathode
675. Indirectly heated power pentode
676. Indirectly heated rectifier
677. Indirectly heated RF sharp-cutoff pentode with anode top cap
678. Indirectly heated RF/IF remote-cutoff pentode with anode top cap
679. Indirectly heated single detector diode
680. Indirectly heated triode
681. Indirectly heated triode/heptode frequency mixer
682. Indirectly heated tube
683. Inductive output
684. Inductive output amplifier
685. Inductive output tube
686. Inductuner
687. Industrial heating
688. Industrial vacuum
689. Inert-gas filling
690. Infrared
691. Infrared detector
692. Infrared image converter
693. Infrared imaging device
694. Injection
695. Innovals
696. Instrument
697. Integrated control triode
698. Internal oscillator grid
699. Internal resistance
700. Internal shield
701. Internally water cooled dual tetrode
702. International octal base
703. Inverse voltage diode
704. Ion microscope tube
705. Ion propulsion tube
706. Ionization gauge
707. ionization vacuum-gauge tube
708. IR image converter
709. Iridium
710. Keep-alive
711. Kellog-type
712. Kenotron
713. Kinescope
714. Kinkless tetrode
715. Kinkless tetrode beam power tube
716. Klystron
717. Klystron linear beam
718. Klystron linear beam pulse power
719. Klystron reflex
720. Klystron reflex electronically tuned
721. Klystron reflex external cavity
722. Klystron reflex integral cavity
723. Klystron reflex L-band
724. Klystron tube
725. KV
726. Lead-acid battery
727. Lead-acid cells
728. Leak detector
729. Leclanché cell
730. Light source
731. Lighthouse tube
732. Lighthouse-type disk-seal UHF planar transmitting triode
733. Line output pentode
734. Line power amplifier
735. Linear
736. Linear beam klystron
737. Liquid cooled
738. Local oscillator
739. Local oscillator/mixer
740. Lock seam
741. Loctal
742. Loctal base
743. Loctal Lorenz
744. Logic gate
745. Loktal
746. Long-life amplifier tube
747. Low emission
748. Low impedance
749. Low microphonics susceptibility
750. Low noise susceptibility
751. Low power output
752. Low-impedance signal triode
753. Low-microphonic military triode
754. Low-mu high-frequency triode pin
755. Low-mu triode
756. Low-noise AF pentode
757. Low-power filament
758. Low-power rectifier
759. Low-power tetrode thyratrons
760. Low-power triode thyratrons
761. Low-voltage
762. Low-voltage/low power filament heater
763. Luminance
764. Luminiscent tetrode thyratrons
765. Magic Eye
766. Magic Eye cathode ray tuning indicator
767. Magic Eye Tuning indicator
768. Magic Eye Tuning indicator with triode
769. Magic tuning eye
770. Magnesium
771. Magnet
772. Magnetic deflection
773. Magnetic field CRT sensor
774. Magnetic field sensor
775. Magnetic focus
776. Magnetic tape recorder
777. Magnetically controlled diode
778. Magnetron oven
779. Magnetron pulse
780. Magnetron tube
781. Magnetron tunable
782. Maser
783. Measurement equipment
784. Measuring diode
785. Measuring electrometer pentode
786. Measuring electrometer tetrode
787. Measuring electrometer triode
788. Mechano-electronic transducer
789. Medical X-ray
790. Medium-mu dual triode
791. Medium-mu high-frequency triode
792. Medium-mu triode
793. Medium-mu triode / sharp-cutoff pentode
794. Medium-mu triode dual detector diode
795. Medium-mu twin triode
796. Memory display tube
797. Memotron storage CRT
798. Mercury arc rectifier
799. Mercury displacement contactor
800. Mercury relay
801. Mercury switch
802. Mercury thyratron external trigger
803. Mercury vapor
804. Mercury-vapor rectifier
805. Mercury-vapor triode thyratron
806. Metal envelope
807. Metal envelope tube
808. Metal-ceramic envelope
809. MHz noise source
810. Mica spacers
811. Microminiature
812. Microphone preamplifier
813. Microphonics
814. Micropup
815. Micropup triode conduction cooled
816. Micropup tube
817. Micropup UHF triode CV
818. Micropup VHF triode
819. Microscale vacuum
820. Microwave
821. Microwave amplification
822. Microwave cavity reference
823. Microwave diode cartridge
824. Microwave indicator
825. Microwave module
826. Microwave oscillator
827. Microwave oven
828. Microwave switching tube
829. Microwave systems
830. Microwave tube
831. Microwave velocity-modulated tube
832. Milliamperes
833. Millimeter-wave
834. Miniature finned
835. Miniature hydrogen thyratron
836. Miniature pin
837. Miniature pin base
838. Miniature VHF Sharp-cutoff pentode
839. Miniature VHF Triode
840. Miniwatt
841. Mixed analogue and digital display
842. Mixed planar tube
843. Mixer
844. Mixer diode semiconductor
845. Mixer heptode
846. Mixer hexode
847. Mixer octode
848. Mobile phone
849. Modulator
850. Modulator tube
851. Monochrome TV receiver
852. Monoscope
853. Monoscope tube
854. M-type backward wave
855. Multialkali sodium-potassium-antimony-caesium cathode
856. Multi-cavity magnetron
857. Multi-gun
858. Multi-lumen
859. Multiplier
860. Multi-purpose
861. Musical instrument amplifier
862. MX pentagrid converter
863. Naming systems
864. Nano vacuum
865. Nanoscale vacuum
866. Near-infrared with the photocathode cooled
867. Negative grid
868. Negative starter voltage
869. Neon
870. Neon glow tuning indicator
871. Neutron initiator
872. Nickel cathode tube
873. Night vision scope tube
874. Nixie
875. Nixie displays and indicators
876. Nixie indicator
877. Nixie tube
878. No filament/heater
879. Noise
880. Noise diode
881. Noise source
882. Nominal voltage
883. Noval base
884. Noval tube
885. NTSC
886. NTSC chroma signal demodulators
887. Nuclear
888. Nuvistor
889. Nuvistor high-mu VHF triode
890. Nuvistor RF triode
891. Nuvistor Tube
892. Octal
893. Octal base
894. Octal version
895. Octode
896. Octode pentagrid converter
897. Oil immersion
898. Oil-can tube
899. Oil-immersed rectifier valve
900. Omegatron
901. One starter electrode
902. Optical indicator
903. Optical level indicator
904. Optical tuning indicator
905. Opto character generator
906. Opto flash tube
907. Opto hollow cathode tube
908. Opto light source crater
909. Opto photocell
910. Orithon
911. Ornamental
912. Oscillating
913. Oscillator
914. Oscillator input grid
915. Oscillator section
916. Oscillator triode
917. O-type backward wave
918. Output pentode
919. Output stage
920. Output tube
921. Output voltage
922. Oxide insulation
923. Ozone
924. Parallel heater
925. Parallel-connected
926. Parallel-string
927. Particle accelerator
928. Passive components:
929. Peak
930. Peak inverse voltage
931. Peanut
932. Pencil tube
933. Penning vacuum sensor
934. Pentagrid
935. Pentagrid converter
936. Pentagrid converter pin
937. Pentode
938. Pentode or beam power tetrode
939. Pentode receiving VHF
940. Pentode RFIF amplifier
941. Pentode transmitting
942. Pentode VHF
943. Pentode VHF acorn
944. Pentode VHF mushroom
945. Pentode video amplifier
946. Pentode-triode style pentagrid converter
947. Permeation
948. Phanotron
949. Phanotron-gas diode
950. Phasitron
951. Phasitron FM modulator
952. Phosphor
953. Photocathode
954. Photocell
955. Photodiode
956. Photometric cell
957. Photomultiplier
958. Photomultiplier spectral S response
959. Photoresistor
960. Photosensitive
961. Phototube
962. Photovoltaic
963. Pigtail
964. Pigtailed
965. Pin noval base
966. Pinch-type construction
967. Pirani vacuum gauge
968. Pitot
969. Pixie
970. Pixie display
971. Planar triode rocket style
972. Plasma
973. Plasma display panel
974. Plasma heating
975. Plasma panel display
976. Plasma propulsion systems
977. Plasmatron
978. Plastic base
979. Plated
980. Platinotron
981. Platinum
982. Pliotron
983. Portable radio
984. Power
985. Power amplifier
986. Power output beam tetrode
987. Power output pentode
988. Power output triode
989. Power pentode
990. Power pentode miniature base
991. Power rectifier
992. Power regulator
993. Power tetrode
994. Power tetrode oil-cooled
995. Power tetrode pulse rated
996. Power triode
997. Power triode audio amplifier
998. Power triode for high voltage pulse operation
999. Power triode forced-air-cooled
1000. Power triode shielded grid
1001. Power twin triode
1002. Precision bore glass
1003. Precision bore quartz
1004. Prescaler
1005. Primer electrode
1006. Professional tube system
1007. Projection CRT
1008. Projection kinescope
1009. Proportional counter tube
1010. Protection tube thermistor
1011. Protective gap
1012. Protective spark gap
1013. Proximity detector
1014. PTO
1015. Pulse
1016. Pulse modspark gap modulator
1017. Pulse modulator
1018. Pulse modulator tube
1019. Pulse rated
1020. Pulsed mode
1021. Pulsed oscillator
1022. Pulsed RF power
1023. Pulsed transmitting tube
1024. Push-pull Class-A circuit
1025. Push-pull class-AB circuit
1026. Push-pull output
1027. Pyrometallurgical electrolytic chemical reaction
1028. Pyrometer
1029. Quadrature detector
1030. Quartz
1031. Quartz condensing
1032. Quartz crystal
1033. Quartz window
1034. RF
1035. RF Pentode
1036. RF amplifier
1037. RF amplifier/mixer
1038. Radar
1039. Radar display tube
1040. Radar dual channel oscilloscopes
1041. Radar modulator
1042. Radar phantastron circuit
1043. Radar pulser
1044. Radar Specific Tube
1045. Radar systems
1046. Radar-fuse
1047. Radiation
1048. Radiation counter
1049. Radiation counter tube
1050. Radiation sensors nuclear
1051. Radiation sensors visible IR UV
1052. Radiation sources
1053. Radiation-cooled transmitting triode
1054. Radio amateur
1055. Radio detector
1056. Radio frequency heating
1057. Radio receiver
1058. Radio set
1059. Radio station
1060. Radioactively primed
1061. Radiosonde
1062. Random value
1063. Raysistor
1064. Readout
1065. Readout digital indicator
1066. Receiver input
1067. Receiver vacuum tube
1068. Receiving
1069. Receiving tube
1070. Rectification
1071. Rectifier
1072. Rectifier cold cathode
1073. Rectifier CV
1074. Rectifier diode
1075. Rectifier half-wave
1076. Rectifier mercury full-wave
1077. Rectifier vacuum
1078. Rectifier x-ray
1079. Rectifier, grid-controlled
1080. Rectifying tube
1081. Reel-to-reel
1082. Reflective-mode photocathode
1083. Reflex circuit
1084. Reflex klystron
1085. Reflex klystron S-band
1086. Reflex oscillator
1087. Reflex radios
1088. Refractory
1089. Register digital indicator
1090. Regulator
1091. Relay
1092. Relay / switch
1093. Relay tetrode
1094. Relay thermal delay
1095. Relay triode
1096. Remote-cutoff
1097. Remote-cutoff RF Pentode
1098. Remote-cutoff control grid
1099. Remote-cutoff pentode
1100. Remote-cutoff pentode dual detector diode
1101. Remote-cutoff pentode dual diode
1102. Remote-cutoff pentode medium-mu triode
1103. Remote-cutoff RF pentode
1104. Remote-cutoff RF pentode
1105. Remote-cutoff tetrode
1106. Repeater
1107. Resettable counter
1108. Resistive dummy load
1109. Resistive element
1110. Resonance
1111. Resonant cavity
1112. Resonant vacuum cavities
1113. Resonator
1114. Restrictor
1115. Reticule
1116. RF amplifier
1117. RF indicator
1118. RF Mixer
1119. RF pentode
1120. RF pentode and dual diode
1121. RF pentode FL
1122. RF power
1123. RF power triode
1124. RF power triode water-cooled
1125. RF triode
1126. RFIF amplifiers
1127. Rhenium
1128. Rhumbatron
1129. Round wire-ended pencil tube
1130. Ruggedized
1131. S-band Magnetrons
1132. S-band reflex Klystron
1133. S-band strapped magnetron
1134. Scintillation counter
1135. Screen grid HF amplifier
1136. Screen-grid tetrode
1137. Secondary emission
1138. Secondary emission amplifier
1139. Secondary emission cathode
1140. Secondary emission tube
1141. Secondary emission VHF amplifier
1142. Secondary-emission VHF pentode
1143. Semiconductor vacuum electronic systems
1144. Semiremote-cutoff RF Pentode
1145. Semiremote-cutoff pentode
1146. Semiremote-cutoff pentode dual detector diode
1147. Sensor
1148. Sensor mass-spectrometry
1149. Sensor radiation
1150. Sensor radiation Geiger counter
1151. Sensor vacuum thermocouple
1152. Separate-cathode
1153. Series heater
1154. Series regulator
1155. Series-string
1156. Servo system
1157. Sharp-cutoff
1158. Sharp-cutoff RF pentode
1159. Sharp-cutoff dual control pentode for computer service
1160. Sharp-cutoff dual tetrode
1161. Sharp-cutoff IF/video pentode
1162. Sharp-cutoff pentode
1163. Sharp-cutoff RF Pentode
1164. Sharp-cutoff RF pentode miniature base
1165. Sharp-cutoff tetrode
1166. SHF
1167. Shield pin
1168. Shielded pentode
1169. Shielded Trigger pentode
1170. Shield-grid tetrode thyratrons
1171. Shock
1172. Short-circuit
1173. Shortwave
1174. Shortwave bands
1175. Shouldered glass
1176. Shouldered glass envelope
1177. Shouldered octal
1178. Shouldered tubular bulb
1179. Shunt regulator
1180. Signal
1181. Signal amplifier
1182. Signal diode
1183. Signal generator
1184. Signal pentode
1185. Signal processing tube
1186. Signal tetrode
1187. Signal triode
1188. Signal triode gain
1189. Signal tube
1190. Silica envelope
1191. Silica tube
1192. Silicone
1193. Single detector diode
1194. Single element
1195. Single pair electrostatic deflection
1196. Single-cavity klystron
1197. Single-ended
1198. Single-ended Class-A circuit
1199. Slow wave device
1200. Small gas tetrode thyratron
1201. Small gas triode thyratron
1202. Solar collector
1203. Solenoid
1204. Solid anode magnetron
1205. Sonar
1206. Space discharge tube
1207. Space-charge-grid tetrode
1208. Spacer
1209. Spark gap
1210. Spark gap pulse modulator
1211. Special cathode processing
1212. Special oscillator section
1213. Special purpose heptode
1214. Spectral response
1215. Spectrum analysis
1216. Spectrum analyzer
1217. Spigot
1218. Split anode TV sync separator
1219. Split triode-pentode
1220. Split-anode magnetron
1221. Stabilisator
1222. Stabilotron
1223. Stage
1224. Stage count
1225. Stage photomultiplier
1226. Starter electrode
1227. Storage deflection control tube
1228. Storage radial beam tube
1229. STransmission-mode
1230. Strobe light
1231. stroboscope lamp
1232. Strobotron
1233. Subminiature directly heated power pentode
1234. Subminiature tube
1235. Super high power generated electron tube
1236. Superheater
1237. Superheterodyne
1238. Superheterodyne mixer
1239. Superheterodyne Pentagrid converter
1240. Super-high frequency
1241. Suppressor grid
1242. Surge arrester
1243. Surge arrester gas
1244. Sweep generator
1245. Switch
1246. Switch vacuum relay
1247. Switching mode
1248. Sync separation
1249. TV turret tuner
1250. Telecom pentode
1251. Telephone repeater
1252. Television camera
1253. Television picture tube
1254. Television tube
1255. Television tube video amplifier
1256. Temperature limited diode
1257. Terminal
1258. Tesla receiving tube
1259. Tetrode
1260. Tetrode beam power
1261. Tetrode beam power radar modulator
1262. Tetrode beam transmitting
1263. Tetrode electrometer
1264. Tetrode mixer
1265. Tetrode power VHF
1266. Tetrode pulse modulator
1267. Tetrode transmitting
1268. Tetrode transmitting power
1269. T-Gauge
1270. Thermal delay device
1271. Thermionic converter
1272. Thermionic relay
1273. Thermionic valve
1274. Thermistor protection
1275. Thermocouple
1276. Thermocouple protection
1277. Thermocouple vacuum-gauge tube
1278. Three-anode sharp-cutoff tetrode
1279. Three-cavity electrostatically focused klystron
1280. Three-phase
1281. Thyratron
1282. Thyratron hydrogen modulator
1283. Thyratron radar modulator
1284. Thyratron subminiature
1285. Thyratron tetrode
1286. Thyratron Xenon
1287. Top cap
1288. Top-cap connection
1289. TR
1290. TR cell
1291. TR L-band
1292. TR switch
1293. TR switch microwave
1294. TR switch X-band
1295. TR Trigger triode one starter electrode only
1296. TR tube
1297. Transconductance
1298. Transconductance radios
1299. Transducer
1300. Transformer
1301. Transformer-coupled audio driver
1302. Transmit/receive
1303. Transmit-receive
1304. Transmitter receiver front end
1305. Transmitters
1306. Transmitting
1307. Transmitting or industrial single or dual triode
1308. Transmitting pentode
1309. Transmitting tetrode
1310. Transmitting triode
1311. Transmitting triode forced-air cooled
1312. Transmitting triode indirectly heated plus dual top cap for grid and anode
1313. Transmitting triode ‘silica valve’
1314. Transmitting triode UHF
1315. Transmitting triode water-cooled
1316. Transmitting tube
1317. Transmitting tube forced-air
1318. Transmitting tube water cooled
1319. Transverse magnetic field
1320. Traveling wave
1321. Traveling wave tube
1322. Traveling-wave magnetron
1323. Traveling-wave tube
1324. Trigatron
1325. Trigatron modulator
1326. Trigger pentode
1327. Trigger tetrode
1328. Trigger tube
1329. Triode
1330. Triode air cooled
1331. Triode amplification factor
1332. Triode amplifier
1333. Triode amplifier peanut
1334. Triode external anode
1335. Triode gas thyratrons
1336. Triode grid
1337. Triode industrial RF generator
1338. Triode micropup
1339. triode nuvistor
1340. Triode pentode
1341. Triode planar
1342. Triode power
1343. Triode power audio amplifier
1344. Triode power dual
1345. Triode power RF heating
1346. Triode pulse modulator
1347. Triode radar modulator
1348. Triode receiving gas
1349. Triode shunt regulator
1350. Triode transmitting
1351. Triode transmitting micropup
1352. Triode transmitting power
1353. Triode transmitting silica
1354. Triode UHF
1355. Triode UHF acorn
1356. Triode UHF acorn CV
1357. Triode UHF cermet
1358. Triode UHF disk seal
1359. Triode UHF doorknob
1360. Triode UHF dual cap
1361. Triode UHF lighthouse
1362. Triode UHF pencil
1363. Triode UHF power
1364. Triode UHF power cermet
1365. Triode UHF rocket
1366. Triode UHF stacked electrodes
1367. Triode UHF transmit
1368. Triode UHF xmit
1369. Triode UHF xmit disc-sealed
1370. Triode UHF xmit doorknob
1371. Triode UHF xmit HE
1372. Triode UHF xmit micropup
1373. Triode UHF xmit oil-can
1374. Triode UHF xmit planar
1375. Triode UHF xmit pulse
1376. Triode UHF xmit pulse coaxial
1377. Triode UHF xmit pulse micropup
1378. Triode UHF xmit pulse oil-can
1379. Triode UHF xmitpulse
1380. Triode UHFSHF cermet
1381. Triode UHFSHF cermet module
1382. Triode VHF dual cap
1383. Triode VHF power
1384. Triode VHF transmitting (VT)
1385. Triode VHF xmit micropup
1386. Triode VHF xmit pulse micropup
1387. Triode xmit air cooled
1388. Triode xmit power
1389. Triode xmit water-cooled
1390. Triode/heptode mixer
1391. Triode/hexode frequency converter
1392. Triode/hexode frequency-changer
1393. Triode/hexode mixer
1394. Triode-heptode
1395. Triode-heptode converter
1396. Triode-heptode local oscillator-mixer
1397. Triode-hexode
1398. Triode-hexode local oscillator/mixer
1399. Triode-hexode mixer
1400. Triode-pentode combination
1401. Triode-pentode converter
1402. Triple diode high-mu triode
1403. Triple triode compactron preamplifier
1404. Trochotron
1405. Trochotron beam switch noise source
1406. Trochotron beam-switching tube
1407. Trochotron noise source
1408. Tube base
1409. Tube checker
1410. Tube socket
1411. Tube tester set
1412. Tunable microwave
1413. Tunable voltage
1414. Tuned RF amplifier
1415. Tuned RF pre-amplifier stage
1416. Tungsten
1417. Tuning circuit
1418. Tuning fork oscillators
1419. Tuning indicator
1420. Tuning-eye tube
1421. Tunnel diode
1422. TV damper/efficiency diode
1423. TV IF
1424. TV line output beam power tetrode
1425. TV magnetic-deflection horizontal-output stage
1426. TV receiver
1427. TV station
1428. TV test
1429. TV tuner
1430. TV UHF converter
1431. TV UHF tuner
1432. TV vertical output
1433. Twin electrometer tetrode
1434. Twin power triode
1435. Twin tetrode transmitting
1436. Twin triode common cathode
1437. Twin triode DC amplifier
1438. Twin triode frequency divider
1439. Twin triode servo amplifier
1440. Twin triode VHF amplifier
1441. Twin-input triode
1442. Twin-tetrode beam power VHF
1443. Twin-triode power amplifier
1444. Two-cavity klystron
1445. Two-element device
1446. TWT
1447. TWT Amplifier
1448. TWT amplifier GHz
1449. TWT BWO
1450. TWT carcinotron
1451. TWT helix couplers
1452. TWT Lorenz
1453. TWT low-noise
1454. TWT power
1455. UHF
1456. UHF cermet transmitting tetrode
1457. UHF cermet triode low-noise amplifier
1458. UHF medium-mu triode
1459. UHF oscillator
1460. UHF pencil triode
1461. UHF power tetrode
1462. UHF receiving pentode
1463. UHF Transmitting Triode
1464. UHF triode
1465. UHF triode NR
1466. UHF triode oscillator
1467. UHF tube
1468. UHF Xmit module
1469. UHFSHF diode
1470. Ultra high power generated electron tube
1471. Ultra-high frequency
1472. Under-chassis connection
1473. Unijunction device
1474. UV flame detector
1475. UV photomultiplier
1476. V dual triode
1477. VHF
1478. VHF receiver front end
1479. VHF Triode
1480. Vacuum capacitor
1481. Vacuum channel transistor
1482. Vacuum diode
1483. Vacuum electron device
1484. Vacuum full-wave rectifier
1485. Vacuum glow discharge
1486. Vacuum half-wave rectifier
1487. Vacuum ionization gauge
1488. Vacuum magnetic field mass
1489. Vacuum magnetic field vibration
1490. Vacuum panel display
1491. Vacuum pentodes
1492. Vacuum phototube
1493. Vacuum phototube specific-color sensitive
1494. Vacuum phototube spectral S response
1495. Vacuum relay wcoil
1496. Vacuum sensor
1497. Vacuum SPDT switch
1498. Vacuum switch
1499. Vacuum tetrode
1500. Vacuum triode
1501. Vacuum triode shielded
1502. Vacuum tube analog oscilloscope
1503. Vacuum tube distributed amplifier
1504. Vacuum tube generator
1505. Vacuum tube volt meter
1506. Vacuum tube with secondary emission
1507. Vacuum-fluorescent-display
1508. Valve
1509. Valve cathode ray
1510. Vapor cooled
1511. Variable filament resistor
1512. Variable transconductance
1513. Variable-mu / remote-cutoff pentode
1514. Vari-mu RF pentode
1515. Vari-mu tetrode
1516. Varistor
1517. Velocity modulated tube
1518. Vertical deflection output tube
1519. Vertical output
1520. Vertical Output Pentode
1521. Very-high power tube
1522. VHF dual triode
1523. VHF RF triode
1524. VHF sharp-cutoff RF tetrode
1525. VHF Transmitting triode
1526. VHF TV transmitter
1527. VHF/RF triode
1528. Vibrating capacitor
1529. Vibration
1530. Vibrotron
1531. Video IF circuit
1532. Video IF amplifier
1533. Video image converter IR
1534. Video image orthicon
1535. Video pentode
1536. Video signal
1537. Vidicon
1538. Viewfinder tube
1539. Vircator
1540. Virtual cathode
1541. VM tube
1542. Volt
1543. Volt heater
1544. Volt heater/filament tube
1545. Voltage gradient
1546. Voltage reference
1547. Voltage reference tube
1548. voltage regulation
1549. Voltage regulator
1550. Voltage stabilizer
1551. Voltage tunable
1552. Voltage tuned magnetron
1553. Voltage-regulator
1554. Water cooled
1555. Water vapor discharge tube
1556. Water-cooled power triode
1557. Water-cooled transmitting triode
1558. Water-cooled triode
1559. Watt
1560. Wheatstone bridge
1561. White noise
1562. X-band magnetron
1563. X-band power amplifier
1564. X-band reflex klystron
1565. Xenon half wave rectifier
1566. X-ray generator
1567. X-ray image intensifier
1568. X-ray tube
1569. Zero anode power