6ax5 rectifier tube data book

This book first introduces the needed principles, to designing and understanding vacuum tube amplifiers. This largebottled rectifier tube not to be confused with the 5ar4, which follows is rarely used in modern designs, but offers midlevel sag to. Power tube selection charts for highpower audioamplifiers eimac,rcapage 1. Get the best deals on 6ax5 tube when you shop the largest online selection at. The more of a voltage drop dcv drop you have the more sag or compression you will have. The extra filament draw will not cause harm to the transformer. Hoffman amplifiers tube amp forum, the facts about 6x5g,gt. If you have concern, you can replace the 6ax5 with a solidstate rectifier freeing up more current than the 6cg7 draws. The 6ax5 is a glass tube on an octal base, hence it is also named 6ax5gt. This book is a beginners guide that brings you, from the basic concepts of vacuum tubes, up to the design of a complete integrated pushpull vacuum tube amplifier.

The 1943, 1949 and 1959 sylvania tube manuals online. The 6550a data sheet is available from franks electron tube pages. True triode with a grid between filament and plate. I dont know of any 6v fullwave rectifier tubes that are capable of more current than the 6ax5, so if you want to build a big amp using them, youll need to start doubling up on tubes andor consider tv damper diodes like the 6au4. Rca nosnib 5r4gy st shape rectifier tube hanging filaments tests nos. 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. Each one will have the base wiring and all the specs right in the book. The ultimate guide to motorbiking the entire length of. The 6x5 tube lit up like a bright light bulb withen 20 seconds. Data were abstracted from the paperbased tb treatment registers at district level and extracted electronically at the provincial level. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers in the 1960s and 1970s.

Apr 10, 2010 the 6ax5 rectifier has almost identical characteristics to the 5y3. Used in many hifi and guitar amplifiers, jj delivers a robust and solidly built tube. I leave the filament wired for the warm glow but remove the high voltage wiring from the socket. Tubes with part numbers beginning with 6x4 tube are in stock and ready to ship.

Current wise 6ax5 rectifier tubes are good up to 125ma. Does a tube rectifier really make an amp sound better. Rewire a socket so one wire from each side of the high voltage winding goes to each plate of the same tube. One 6ax5 can replace two 6x5 tubes, but you have to rewire, to remove the plate jumpers and put both high voltage leads on one tube socket. The 6x5 was made with a standard glass envelope 6x5g and a glass tubular envelope 6x5gt as well. Discover everything scribd has to offer, including books and audiobooks from major publishers. Get the best deals on 6ax5 tube when you shop the largest online selection. Changed to dynakit parts pb0281 transformer for 220 volts in chile. If something seems too expensive, then youre probably being overcharged. Before the late 1950s, every amplifier available to musicians had a power supply that used rectifier tubes. That change has been written up many times as well. The 6x5 a problematic tube canadian vintage radio society. I first started with testing all th tubes for shorts.

Rectifier tubes having only one plate and one cathode, such as the 35w 4, are called. A wonderful reference for anybody designing equipment with vacuum tubes. Tube 6ax5 or rohre 6ax5 id18669, fullwave vacuum rectifier, and shown. How big is too big for filter capacitor with tube rectifier. Antique radio forums view topic 6x5 rectifier question. A 6ax5 gt rectifier tube is used in a full wave center tapped configuration with a choke input filter. Be careful when going to a higher rated rectifier in 6v6 amps. Ive got three caps in there now 303030 all rated for 525v but the amp seems like it could use more. By having this information on a chart you can choose a rectifier tube that will best suit your playing style. Vacuum tube 25z6gt, dual rectifier antique electronic supply. This is a chart showing the specifications for 5 volt rectifier tubes that can be used in guitar amps. Rectifier tube tube tube for code 102d 102d 104d 104d 205f 212e 242c 215a 1020 205f 205f 205f 205f 1020 1040 242c 242c 212e 212e 220c noc 222a 232b 233a.

Reference data for radio engineers, international telephone and telegraph corp. A ninepin british rectifier tube that looks somewhat like an el84 output tube at first glance, found in the original vox ac15s and other sub20watt british amps and their derivatives. A 6ax5gt rectifier tube is used in a full wave center tapped configuration with a choke input filter. Recently worked on a philco console that had a 6x5 rectifier tube with a push pull output setup. Its a fixed bias amp with a pair of 12ax7s, the two el34s and the rectifier. Typically manufactured in the shuguang factory in china, sino chinese tubes have seen vast improvements over what was available just a few years ago. Hi allen when i find these tubes in a set, i replace them with silicon diodes under the chassis. That way, you can leave the nice looking original tube in its socket glowing away for all to see.

Bill beechs online tube data from mostly rca manuals. The choke input filter allows the rectifier tube to handle substantially more current than when used with a capacitor input filter. Document information click to expand document information. The 25z6gt is a heatercathode type fullwave highvacuum rectifier doubler tube designed for use in the power supply of ac or acdc receivers. The first electronic amplification of sound was done with vacuum tubes. The jj electronic 5u4gb is an excellent choice for an economically priced tube rectifier. Power tube selection charts for highpower audioamplifiers eimac,rcapage 1, rca page 2. The rated hk max is 450v on this data sheet while the 6x5 datasheet says 450v max hk, it also says this recti. Always check the bias and idle power of the tube with the new rectifier to be certain that it is running within spec. The 6ax5gt is a fullwave rectifier of the heatercathode type intended for use in ac operated and automobile receivers. New solid state plug in replacements for 6x5gt 6ax5gt vacuum tube rectifiers.

Nov 01, 2010 all these rectifier tubes are tested on my aikido preamp, powered with oversize customer power transformer, vcapjensen4poleasc choke loaded on the power supply, combination of riken, shinkoh, kiwame, and vishay s102 on the resistor, dact 100k stepped attenuator volume control, duelund cast ag as output coupling, jensen copper foil aluminum. To view this site, you must enable javascript or upgrade to a. It has a common cathode and two plates in one bottle which makes it. That changed with the invention of the transistor and the development of solidstate and hybrid amps, but these tubes live on in vintage, boutique and all tube amps. A plate and filament in tube with something to bend the filament magnetic field or electrostatic. The 6x5 is a full wave indirectly heated rectifier. Sylvania 5931 vacuum tube black plates brown base fat bottle rectifier tube 5u4wg 5u4wga with low loss phenolic base leedsradio 5 out of 5 stars 973. Tube 6x5gt or rohre 6x5gt id3260, fullwave vacuum rectifier, octal int. Vacuum tubes mostly rely on thermionic emission of electrons from a hot filament or a cathode heated by the filament. An amp im working on powered by a pair of el34s, running at about 378v coming off the gz34 rectifier. Valve amplifiers can be used for applications such as guitar amplifiers, satellite transponders such as. A few choice words were said and the battle between wits began between me and the this particular radio.

The rca data gives a high voltage specification but other makes quote 3500350 as the input voltage. If you look at the specs in the rca tube manual for the 6x4 or 6x5, they can. Vacuum tube 6ax5gt, rectifier, full wave antique electronic. Mechanics are way, way cheaper in vietnam than they are in western countries. The manual list substitutes for 6x5, prefered subs are 6x5g and gt, 6x5l.

In addition to diodes, they contain a resistor to mimic the voltage drop in a typical tube, plus linear inrush currentlimiting circuitry to simulate warmup time of a vacuum tube, except it lasts 1 to 2 seconds rather than the 7 to 9 seconds of a typical rectifier tube. The 6x5gt is also marked with the american service code of vt126b. Now is the perfect time to turn your travel dreams into vacations to look forward to. When irs st2 is used to replace a 51j4 vacuum tube oper ating at 300vrms and 200madc, the forward voltage drop, from the rating tables, is approximately 45vdc. You should always avoid having more than 430 volts across a 6v6 plate voltage minus cathode voltage. For other taylor tubes, see the entire 1945 taylor tube catalog in pdf format note, 1. Rectifier comparison and interchangeability chart kca nos tubes. Courtesy of dave rossetti, 637kb superior tv11 tube tester operaing instructions.

The 6x4 series of rectifier tubes can be very confusing because most of the substitutes andor equivalent tubes need adapters. Increasing the cathode bias resistor is often necessary. The device can be used as an electronic amplifier, a rectifier, an electronically controlled switch, an oscillator, and for other purposes. I was told by an expert that it would give me more volume, but i cant tell the difference. As used in this circuit the 6ax5 gt can handle a maximum total current of about 150ma. Please let me know if you find errors in my pages or documents.

Power types having plateinput ratings up to four kilowatts and associated rectifier types are included in this manual. Like the 6ax5 it is a full wave rectifier with two plates and a single, common cathode. Buy 6ax5 vacuum tubes online, in stock and ready to ship. Arranged by subject category, then alphabetically by title. Check out our rectifier tube selection for the very best in unique or custom, handmade pieces from our shops. Acrobat pdf 477k frank philipse pocnet mirror patrik schindler 6ax5gt. Then after recapping and swapping out the original burnt up power transformer the radio was tested. Sylvania 5y3wgta vacuum tube brown base 5y3 rectifier tube black plate excellent condition 5y3gt leedsradio 5 out of 5 stars 1,006. Rca 6x5 6x5gt vacuum tube rectifier black plate nostesting lowtechelec. The v3 rectifier tube transforms the 325v ac high voltage from the power transformer into 360 volts of high voltage dc which the amp needs to power the tubes. For books containing primarily tube data, like sylvania, ge, and rca tube manuals, see the tube data page. Records were matched based on name, age and address. A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal.

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