Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics. The heater is tapped to allow a panel lamp to be incorporated in the circuit. Not all show the tubes yet, because this is quite a lot of work but it is by far the most complete data base for radios and tubes including semiconductors. I am working on posting the rca hb3 tube handbook on line on this. This is a list of vacuum tubes or thermionic valves, and lowpressure gasfilled tubes, or discharge tubes. Although data books specify an upper limit of 400600 mhz, some circuits may obtain gain up to about 900 mhz. The truth is, there is no reason to suffer power supply set backs like this. Data from or other sources as supplied by john atwood.
Electrical voltages are present, repairs should only be attempted by a qualified technician. Antique radio forums view topic 35w4 tube question. Free vacuum tube data sheets free vacuum tube substitution guide manuals free radio tube data manuals free tube base diagrams. Many industrial, military or otherwise professional tubes were also produced. Sylvania 35w4 vacuum tube for all american 5 tube table. Tinos book takes you buy the hand and details amplifier building from start to finish. Nos tube specification sheet nos tube specification sheet. The type 955 triode acorn tube is a small triode thermionic valve vacuum tube in usa designed primarily to operate at high frequency. Sylvania 35w4 electron vacuum tube sencore tested nos vintage free shipping. With the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use, there are generally equivalents for most types of tube. I just thought there was a book for radio repair to show how each rectifier tube would be replaced. The cathode tube extends above the triode structure and two bright metal straps can be seen in the picture, these are formed into 2 mm squares at the top of each strap. Vacuum tube, electron tube, thermionic valve, valve. Sylvania 35w4 vacuum tube new old stock excellent condition original box tested on a hickok ks 15874l2 cardmatic tube tester the all american 5 version that uses this tube has this line up converter.
The 35w4 is a half wave rectifier designed for use with a 150 ma heater chain. Vacuum tube, electron tube, thermionic valve, valve resources category is a curation of 19 web resources on, about vacuum power tubes, what is a vacuum tube, franks electron tube pages. Vacuum tube 35w4, rectifier, half wave antique electronic supply. With the resurgence of interest in vacuum tube audio amplifiers among audio purists, vacuum tube amplfier basics is right on target. Both models can share the same tube setup data book, and therefore both models are functionally equivalent. The first computers were vacuum tube based and took up rooms while vacuum tubes are considered outdated by most of the world they are still used in several key areas. As a single ended class c rf amplifier it would generate up to 5. This 1960 tube caddy below book also includes all tube numbers from all over the world. About vacuum tube data the resource is currently listed in in a single category.
It is basically the design of the 6av6 tube triode. Herein you will find a collection of vintage engineering texts, vacuum tube datasheets, and other obsolete information, presented free of charge and without annoying advertisements. The following list shows the tube types i have entered in my database, with exception of the service types e. Rectifiers replaced with diodes bradley rush 05192014 i watched the youtube on the 5y3 very interesting. Discussion in general technical questions and answers started by w5wpl, mar 17, 2009. Tube 35w4 or rohre 35w4 id1072, halfwave vacuum rectifier, miniatur7pinbase b7g, usa 1940 and powersupply shown. Tube 35y4 or rohre 35y4 id3233, halfwave vacuum rectifier, loctal8, b8g sylvania, 1938 and powersupply shown. Sencore setup book tube data tc114 tc tc6 tc142 tc154 small booklet. Purchase 35w4 vacuum tubes online, in stock and ready to ship. Tube amp capacitors or guitar amp capacitors, our selection currently covers the most commonly used types in vacuum tube amplifier applications. The wide glass tube envelope is 27 mm in diameter, and excluding the io base pins is 68 mm tall.
Only a few types are still used today, mainly in highpower, highfrequency applications. The design of basic tube power supplies is actually very straight forward. We have over 25,000 nos new old stock tubes available however we do not keep these on the site due to the sheer volume of data it would produce on the site, also nos is stored offsite in another warehouse and is only handled once per week. It has many circuit diagrams, using these tubes and all the information, about these original vacuum tubes. Books for boys, vacuum tube, book and magazine, electronic books, manual, pdf, file format, digital, specs. This 7pin miniature tube is listed as a pentode in the rca data book, but the. I enjoyed that hobby so much i am resuming in retirement.
Western electric vacuum tube data 301a to 373a 1963 188 pages. Miniature vacuum tubes with cathodes of highfieldemitting carbon. Free vacuum tube data sheets free vacuum tube substitution. Vacuum tube 35w4, rectifier, half wave miniature halfwave rectifier for use in. Vacuum tube 35w4, rectifier, half wave amplified parts. Tubes free delivery possible on eligible purchases. Vacuum tube, vintage radio and other electronics information. Tube 35w4 or rohre 35w4 id1072, halfwave vacuum rectifier, miniatur7pin base b7g, usa 1940 and powersupply shown. The 12at6 is a double diode triode for receiver applications. Building vacuum tube guitar and bass amplifiers guytronix. We do not know these differences as the 3bs2b tube data is not available.
I am a retired electronics engineer with very little knowledge of vacuum tubes. Quite wierdly, from a uk viewpoint, the heater is tapped at. Tube data vintage info from the age of vacuum tubes. This is a list of vacuum tubes or thermionic valves, and lowpressure gasfilled tubes. This link is listed in our web site directory since monday sep 30 20, and till today vacuum tube data has been followed for a total of 337 times. I am reading several books all the time in my effort to learn, i look at schematics constantly, my wife thinks im having an affair. The main category is vacuum tube resources that is about vacuum tube, electron tube, thermionic valve, valve resources. Bold designators are close or identical, italic designators are different ratings, different pinouts or different filament voltages. The 2e26 is a small vhf transmitting beam tetrode that was typically used in mobile transmitters. Tynes book saga of the vacuum tube originally published by howard w sams inc. Tubes were the first widespread method of controlling electrical signals without moving parts. Thanks to alex hiley for this detail on the pilot lamp.
Is there a solid state replacement for vacuum tubes. Buy 100 x 7pin gold teflon vacuum tube socket fr 12ba6 12at6 35w4 6al5 6663 6eh5 6x4. If used in pushpull with up to 500 volts on the anodes the pair could produce up to. Another spot to look, which is especially useful if youre looking for replacement types and tubes with similar bases or characteristics, is the nj7p tube database.
In addition to the data i have scanned and posted, if youre looking for data on a particular tube you should visit tsdl on duncanamps website, or franks tube data. But in my 20s i used to build vacuum tube radios and amps, heathkits, etc. This is a suitable replacement for any 35w4 tube type. Interelectrode capacitances and miller capacitances are minimized by the small dimensions of the device and the widely separated pins.
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