Gourt > Business > Electronics and Electrical > Components > Vacuum Tubes (2)
In electronics, a vacuum tube (U.S. and Canadian English) or (thermionic) valve (outside North America) is a device generally used to amplify, or otherwise modify, a signal by controlling the movement of electrons in an evacuated space. For most purposes, the vacuum tube has been replaced by the much smaller and less expensive transistor, either as a discrete device or in an integrated circuit. However, tubes are still used in several specialised applications such as audio systems and high power RF transmitters, as a display device in television sets, and to generate microwaves in microwave ovens.
The vacuum tube is a voltage-controlled device, which means that the relationship between the input and output circuits is determined by a transconductance function. The solid-state device most closely analogous to the vacuum tube is the JFET. However, the vacuum tube typically operates at far higher voltage (and power) levels than the JFET.
Diode
Triode
A rare acquisition of AC-701K Vacuum Tubes http://bit.ly/74vGw5 But I'm certain they are not as reliable as some might believe...
LautenAudio (Lauten Audio) Wed, 16 Dec 2009 07:40:03 -0000
A rare acquisition of AC-701K Vacuum Tubes http://bit.ly/74vGw5 But I'm certain they are not as reliable as some might believe...
@Jasonbartfast @desconcentrado has to be from a machine with vacuum tubes
npseaver (Nick Seaver) Wed, 16 Dec 2009 01:43:26 -0000
@Jasonbartfast @desconcentrado has to be from a machine with vacuum tubes
Decorating,cleaning,rearranging,heating up the ol' vacuum tubes and mixing tracks.
Slowenemies (Erik Adkins) Tue, 15 Dec 2009 21:29:09 -0000
Decorating,cleaning,rearranging,heating up the ol' vacuum tubes and mixing tracks.
Decorate the tree with electronic parts http://bluetubeproject.blogspot.com/2009/12/decoate-with-electronic-parts.html vacuum tubes
BlueTubeProject (Larry Brown) Tue, 15 Dec 2009 17:57:19 -0000
Decorate the tree with electronic parts http://bluetubeproject.blogspot.com/2009/12/decoate-with-electronic-parts.html vacuum tubes
Video: How do radios work? Well, you see, there are vacuum tubes that receive waves that contain opera music.... http://tumblr.com/xry4pkwfr
AnnaJane (Anna Jane Grossman) Tue, 15 Dec 2009 16:48:35 -0000
Video: How do radios work? Well, you see, there are vacuum tubes that receive waves that contain opera music.... http://tumblr.com/xry4pkwfr
RT @deaninwaukesha I give my blogging lately a #bplus << I give my vacuum tubes #bplus too! (Old Electronics Humour)
tommcmahonnet (Tom McMahon) Tue, 15 Dec 2009 13:22:35 -0000
RT @deaninwaukesha I give my blogging lately a #bplus << I give my vacuum tubes #bplus too! (Old Electronics Humour)
C Electronics - World-wide distributor of electron tubes, sockets and magnetrons. Replacement tubes for Perkin Elmer mass spectrometer.
Meta Description: [ D and C Electronics. World wide distributor of Electronic vacuum tubes sockets and magnetrons at the best prices. Replacement tubes for Perkin Elmer mass spectrometer ]
20000 NOS Electron Tubes - NOS and used tubes, rare valves, virtual museum.
Antique Electronic Supply - Books, transformers, capacitors, and resistors. Has an online catalog and shopping cart.
Brand X-ray Tube Co., Inc. - Manufacturer of x-ray tubes for use in medical, dental and industrial imaging and inspection applications.
Meta Description: [ Manufacturer of x-ray tubes for medical, dental, industrial imaging and x-ray inspection. Manufacturing x-ray tubes for applications up to 160 kV. ]
Burle Industries, Inc. - Manufacturer and supplier of specialized electron tubes and electro-optic products. USA.
Meta Description: [ Burle Industries manufactures Power Tubes and Cavities; Conversion tubes - photomultiplier tubes and imaging tubes; ELECTRO-OPTICS Products - Microchannel plates, Channeltron® amplifiers, Scientific Detectors, flexible fiber optics, and accessories; and Plating and Environmental Testing services. ]
500
California Tube Laboratory, Inc. - Electron tube and vacuum tube manufacturer. High power CW and pulse magnetrons, klystrons and power grid tubes. Product listings and data sheets, and outline drawings.
Collins Tube Specials - Listing of surplus tubes, searchable database.
Meta Description: [ Tube Sockets, Tube Accessories ]
Daily Electronics Corp. - Electron and vacuum tubes. Industrial, military, broadcast and entertainment applications supplied from inventory. Hard to find and obsolete tubes available.
Meta Description: [ The Electron Tube and Vacuum
Tube Specialists. Electron tubes are our only business. Large inventory of
of current and obsolete electron tubes. Low prices and fast deliveries. ]
Electron Tube Data Sheets - Type index, high powered tubes and data sheets in PDF format.
Meta Description: [ electron Tube Data sheets - Type index ]
Electron Tubes for Industry - Mostly industrial product line.
Meta Description: [ vacuum tube and electron tube list with prices, transmitting tetrode and pentode vacuum tubes. US and European made transmitting power tetrode and pentode vacuum tubes, including current production imported vacuum tube types from worldwide sources in glass and ceramic construction are featured ]
Freeland Products, Inc. - Rebuilder of vacuum power grid tubes for industrial, radio and television applications.
House of Tubes - Ham radio and audio tubes. Online catalog with secure ordering.
500
Kennetron, Inc - Offering rebuilt vacuum, oscillator, induction and transmitter tubes.
Meta Description: [ rebuilt vacuum tubes: rebuilt oscillator tubes, induction tubes & transmitter tubes. Kennetron rebuilds vacuum, oscillator, induction and transmitter tubes for industrial and broadcast applications. ]
Lohmann X-Ray - Manufacturer of industrial and medical X-ray tubes, including tubes for medical, dental, and industrial applications.
Meta Description: [ The leading manufacturer of fixed anode X-Ray tubes for industry and medicine since 1946 ]
MachMat main - Vacuum tubes for the audio amp market.
Meta Description: [ MachMat tube pages, pages dedicated to tube and high-efficiency audio, information about tubes, datasheets, schematics, lots of links, tubes for sale and much more ]
Magnatek X-ray sources - Integrated X-ray generators. Also prototype x-ray sources. Danish company.
Meta Description: [ Manufacturer of X-ray sources and HT generators for medical and industrial imaging, gauging and x-ray inspection systems. ]
Michelle Troutman's Electronics Items - NOS and used vacuum tubes; also, service manuals and Sams Photofacts, parts, magazines, books, radios and test equipment.
Mike's Electric Stuff - Antique Glass and Vacuum stuff, for electronics and high voltage.
N9Tew - A supplier of vacuum tubes for ham, audio and antique radio purposes.
Meta Description: [ N9TEW is supplier of vacuum tubes for ham,audio & antique radio purposes. ]
New Sensor Corporation - Manufacturer and wholesale distributor of vacuum tubes and electronic parts. Sovtek tubes.
Meta Description: [ Distributor of Sovtek, other current production vacuum tubes, and NOS tubes. Distributor of electronic parts for audio and musical instrument amplifiers. Manufacturer/ Distributor of Electro-harmonix effects. ]
Pacific TV Vacuum Tube Sales - Vacuum tubes for radio, audio and amateur use. Over 1,000 types with regular 5 lot sleeve specials. Canadian site.
Meta Description: [ Vacuum tubes and sockets for radio, audio and amateur use. Over 1500 types with regular specials, online schematics and technical data ]
Penta Laboratories - Manufacturer and distributor of electron tubes for broadcast, industrial, marine and avionics applications worldwide.
Meta Description: [ Penta Laboratories is a Manufacturer and Distributor of electron tubes, including vacuum tubes, capacitors, magnetrons and CRT for Broadcast, Industrial, Marine and Avionics applications worldwide. ]
Phamitech International Company Ltd - Exporter of electron tubes, TWT, valves, thyratrons, magnetrons, klystrons, transmitting tubes, heating tubes, vacuum interrupters and X-ray tubes made in China
Superior X-Ray Tube Company - Manufactures high quality custom-made x-ray tubes for a wide range of applications such as thickness gauging, food inspection, bone densitometry, dental, medical, and baggage inspection.
Meta Description: [ Superior X-Ray Tube Company manufactures high quality xray tubes for a wide range of applications such as: thickness gauging, food inspection, bone densitometry, dental, medical, baggage inspection, XRF, NDT and mini c-arm, among others. ]
Thales Electron Devices - Provides electron tubes for space, telecom, radio and TV broadcast, military , X-ray imaging, science and industry applications. Includes products specifications and application notes. Formerly Thomson Tubes Electroniques.
Meta Description: [ Leader in manufacturing electron tubes, Thales Electron Devices (formerly Thomson Tubes Electroniques) for professional markets, provides several fields - Space, Telecom, Broadcast, Science, RF Heating, NDT, Security, Inspection - Consult our catalogs _ CCD Cameras, Traveling Wave Tubes Amplifier... ]
The Invention of the Vacuum Tube - In 1879, the American inventor Thomas Edison publicly exhibited his incandescent electric light bulb for the first time.
Meta Description: [ In 1879, the legendary American inventor Thomas Alva Edison
publicly exhibited his incandescent electric light bulb for the first time. ]
The Tube Center - Providing HAM and amateur radio operators, antique radio enthusiasts, audio professionals and hobbyists the ability to choose from an inventory over 2000 different tube types.
Meta Description: [ We sell; vacuum tubes, radio Tubes, audio tubes, electron tubes, valves, grid caps, sockets and tubes for amplifiers. ]
Tom's Tubes - Russian PA tubes. Paypal.
Tube World, Inc. - Vacuum tubes and sockets for sale.
Meta Description: [ Vacuum tubes, preamp tubes, power tubes, amplifier tubes, replacement tubes, resistors, inductors, transformers, power triode tubes, Western Electric tubes, audio test equipment, global shipping. Fast shipping and superior customer service! A leader in NOS vacuum tubes since 1996. amplifier tube,... ]
TubeTronic - Vintage Vacuum Tubes and Test Equipment. Audio tubes, TV tubes, Radio tubes and Electron tubes. 12ax7, 12au7, 12at7, Generators, Analyzers, and Counters.
Meta Description: [ tubetronic.com ]
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Vacuum Tube Links - A long list mostly audio stuff.
Vacuum Tube Valley - All about vacuum tubes. Tube audio amp kits.
Vacuum Tubes, Inc. - Worldwide sellers of vacuum tubes and electron tubes for audio, radio, and industry
Meta Description: [ Worldwide sellers of vacuum tubes and electron tubes for audio, radio, and industry ]
Vintage SoundWorks - Service for all makes of vintage tube amplifiers and radios. NOS and new and used vacuum tubes.
Yueqing Zhengli Rectifier Corp. - Tube rectifiers. Site in English and Chinese.
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