Combining the guts of an 02r mixer with a fully featured multitrack recorder, the aw4416 ended up being a prodigiously complex beast. Here you will find a full range of products from subminiature valves to high power industrial valves and sockets. Tube substitution supplement the electronic scanner transistors. I dont have necessarily data for all these types but i also have many data for types not listed.
The term most commonly applies to a threegrid amplifying vacuum tube thermionic valve, which was invented by gilles holst and bernhard d. The tube line up is very basic ef37a 6c5 6336a for each channel which totals only 6 tubes for the complete stereo amplifier. Ia, the anode current, and for pentodes even the screen voltage, since this also affects anode current. If you have 10 or fewer feedbacks, please contact me before bidding. Michelin earthmover tires technical data book these values are given for informational purposes only and may not be used for legal or statutory actions. The me1400 electrometer pentode is also rated for high quality audio use and is a direct replacement for the ef37a upon which it was based. View and download sigma ef140 dg flash manual online. The following list shows tube types i have entered so far in my database. It is very similar electrically to the octal base ef37a and the rimlock base ef40. The 7581a sounds a bit too tight for my tastes but the kt66, imo, is the best tube for guitar amps in the world. Svetlana ef86 highperformance audio smallsignal pentode t. Some 6336a tube data recommended a maximum of 500k for the grid resistors in some applications and also a minimum of 200 ohm for cathode resistance.
Those who need more comprehensive information on the complete range of mullard valves and tubes are invited to subscribe to the. Valve data book 1951 franks electron tube data sheets. It connects the plate of the 6sl7 with the plate of the 6l6. The equivalents list may be removed from the main book if desired. Full text of mullard data book 196566 internet archive. The ef30 electric fireplace will match everything with the option of a log set for a more traditional look.
El37 mullard 1950s 1960s some branded philips or philips miniwatt best el37 listed at el37 mullard is a 25 watt audio output power pentode. Close manufacturing specification tolerances and improved processing provide improved reliability and superior sonic performance. 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 is very similar electrically to the octal base ef37a and the rimlock base. The first part, of format numberletternumber is the date code where the first number signifies production week of month, the following letter signifies the. Your room is instantly transformed into a space that is cozy and romantic. Nine seventyfive buys you a complete tuner overhaulin cluding parts except tubes or transistorsand absolutely no hidden charges. If you do later buy a macro lens, the extension tube may still prove useful. Full text of practical electronics 1965 may internet archive. Katosan says, there is nothing to write home about, as the circuit is just a copy of the we91b amplifier. Please call 1800rfparts 18007372787 for availability. We need time for proper testing, boxes etc, so our order deadline for less than 50 pieces is. 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.
A pentode is an electronic device having five active electrodes. The smaller pair of amplifiers are katosans 300b mono amplifiers that are rated for a maximum of 10w. Point 3 is ground minus and point 4 is plus of the plate voltage. Full text of international radio tube encyclopaedia 3rd ed see other formats. I am happy to have on my shelf books in nonvirtual form. There is a vast amount of old analog, sound and equipment data out there. Nos mullard cv358 ef37a electron valve vacuum tube ebay. Information for this magnificent radiogram can be found on page 32 of volume ii radio servicing book. A report on jack darr the state of the art part 1 first of a threepart series covering the evolution, operation, and servicing of solidstate circuitry. Leak valve amplifier for sale in uk view 43 bargains.
Pentode amplifier having a remote control grid characteristic and utilizing the miniature construction. Three ef37 low noise pentodes are employed in the audio amplifier, noise limiter and tone control stages. A couple decades later, i imagine asano and shishido were obviously privy to that book and schematic you posted. Tube 6g8g or rohre 6g8g id20737, double diodepentode, octal int. I believe it covers all the valves mullard made for domestic receivers between 1925 and 1937. You can use the search to find service types or go to the service type lists that you can access from the page more tube related stuff. High quality amplifiers have used the ef37a for many decades.
Tube ef 37a or rohre ef37a id19496, vacuum pentode, octal int. Jan 31, 2019 this is a performance test of the schiit saga preamplifier using two different tubes. Item location for collection by buyer bungay sorry no postage delivery or couriers collection buyer pick up only cash on collection asap after auction ends please. The beatles minus john lennon, who didnt play on the song began recording savoy truffle on 3 october 1968. Before the advent of the ef86 the mullard valve of choice for preamplifier stages was the ef37a mullard describe the ef86 as a low noise pentode intended for use as a rc coupled af voltage amplifier, particularly in the early stages of high gain audio amplifiers, microphone preamplifiers and magnetic tape recorders. Svetlana ef86 highperformance audio smallsignal pentode he svetlana ef86 is a glass envelope miniature pentode intended for highquality audio preamplifier service. Mullard designate the ef37a as a high gain, high impedance, pentode for use in af preamplifier stages.
Full text of international radio tube encyclopaedia 3rd ed. Of any particular type of valve or tube does not necessarily imply that it can be supplied. The pentode consists of an evacuated glass envelope containing five electrodes in this order. The ef37a was also made with the classic shouldered shape of envelope.
Canon auto focus extension tube ef 25 ii 9199a001 adorama. Ecc32 filament current 950ma, 6sn7gtb filament current 600ma, ecc34 filament current 950ma very rare tube with superb sound and recommended as the input tube. Strymons analoguemodelling effects pedals have acquired an enviable reputation can their first amp simulator live up to it. Vplate 250v, vgrid 16v, iplate 10ma, gm 2200, rplate 5. 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.
A lot of interesting tubes out there that make the amp sing, but recently i came across ef37 from mullard and a very early version of the tube without a version at the end. Well, we did mullard last week so this time, lets look at the brimar type and date codes, oft seen on valve envelopes in minuscule inked print, but what do they mean. The wide glass tube envelope is 29 mm in diameter and, excluding the io base pins, is 84 mm tall. The first part, of format numberletternumber is the date code where the first number s.
Billington export limited christmas holiday notice we close on monday 23 december and reopen on thursday 2 january 2020. W hat started out as a classic single ended design transformed into a very good amplifier. This is a performance test of the schiit saga preamplifier using two different tubes. Only those valves in current production, with full or half page data are listed. Tube rolling of schiit saga preamplifier audio science. Aero digest 1946 janjune vol 52 bound hardcover exfaa library 031716am aero digest 1951 jandec 6263 bound hardcover exfaa library book 03171 aero digest jandec1950 6061 bound hardcover exfaa library book 031716 aero digest janjune 1947 vol 54. May 24, 2016 i would like to clarify that richard king was compiling and telling us all about and distributing data years ago from the same site that had the scan of the oliver read sound book.
Ferroxcube reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. The way the resistors are set up its even safe to switch this while the amp is on it makes a modest pop in the speakers but nothing too frightful. This is the amalgamated data from three mullard data books from the late 20s to late 30s. The following list shows the tube types i have entered in my database, with exception of the service types e. With over twenty years experience in the valve sector, we are pleased to welcome you to our new website. Valves still in production or stock for revalving are not listed here. Easily share your publications and get them in front of issuus. The underscore and these letters are not part of the tube type number. Audio asylum search of tube diy asylum enter your search criteria. Imagine just opening the box and plugging in a fireplace.
Data sheet status product status definitions preliminary specification development this data sheet contains preliminary data. Details of this service and further data on individual types may be obtained from this depart ment. Mains for the booster is avail able on the set side of the on off switch, or more. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online.
Z should be the real deal but nos genalexes are the best. Ecgphilips limited quantity available, new old stock made in the usa. Guaranteed means a full 12 month warranty against defec tive workmanship and parts failure due to normal usage. With a classic design i mean a smaller valve for voltage amplification and a power valve driving the output transformer. Philips factory valve codes franks electron tube data sheets. It was introduced in the late 1950s and was produced by philips, mullard, telefunken, valvo, and gec among others. Product specification production this data sheet contains final specifications. Other similar substitutions are 6l6gc, 5881, kt66, 5932 check with your equipment manufacturer before substituting a el37 for a 6l6gc or kt66 el37 plate and screen voltage should not exceed 400 vdc vfil6. Ef37 and ef37a at the national valve museum tdsl tube data. 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 londons trident studios they recorded the basic track of lead guitar, bass and drums in one take, although it is likely a number of rehearsals had previously been recorded and wiped. Techniques for troubleshooting transistor tv tube and transistor tv servicing methods are similar but not identical. The ef86 is a high transconductance sharp cutoff pentode vacuum tube with noval b9a base for audiofrequency applications. The unit and extra tubes are on loan from kind member. The data book has been prepared by central technical services, mullard ltd. Inductors of the receiver are coiled on the base from old tubes. Brimar codes come in two parts separated by a forward slash.
Your are right about the mcmichael dl1, a little known dark horse. Unfortunately it is not so simple for a thermionic valve. Please note tire load and pressure tables pages 26 to 87 these tables are classified according to the. Ef37 is a drop in equivalent for 6j7 tube which is quite popular as a driver for 2a3 and 300b. Note, however, that you will have to remove the extension tube in order to get back the ability to focus at infinity. Ecc32 filament current 950ma, 6sn7gtb filament current 600ma, ecc34 filament current 950ma very rare tube with superb sound and. Vacuum tube ef37a, pentode antique electronic supply.
I like to combine shipping to save you moneyif you have any special requests, let me know. With almost datasheets and the visitor counter indicates over 4000. Advantages the ef series exclusive technologies and features. The data sheets also give parameters for use as a triode. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. Introduction most philips valves are marked with a group of symbols which contain coded i nformation relating to the type, place of manufacture or country of origin in the case of bought in valves, and the date f o. If you need more, then stack it with another extension tube. Our handson workshop shows you which of those snazzy features work best in practice, and how to use them efficiently. Tube data item vfv ifa vav vg1v vg2v iama ig2ma riohm gmmav u raohm paw ef37a 6. Yes, it does move the input tube bias point a bit when you change the feedback setting, but its not enough to make a big change.
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