This 1960s sylvania 5r4gyb rectifier tube has a tall bottle, smooth black plates, and a side o getter. Jun 10, 2016 the type 80 tube uses what is known as the ux4 base and as long as i select another fullwave rectifier with the same pinout and base requirement i shouldnt have any trouble. Sep 09, 2007 my anthem has originally had a 5ar4 but came with a jan 5y3gt in the power supply. Nov 10, 2012 5r4 5r4gy tube rectifiers a mini shootout lord soth tubes asylum. The tube that gives you additional vintage tone quality. Sylvania electronic tubes t6i sylvania type 6ar8 sheetbeam. The 0z4 was a gasfilled rectifier tube commonly used in vacuum tube car radios in the 1940s and 1950s. I usually tend to use 5u4gbs as the rectifier when needing a high current tube rectifier and account for the larger voltage drop with the correct transformer however the 5ar4gz34 is a good tube as well. You should always avoid having more than 430 volts across a 6v6 plate voltage minus cathode voltage. This military spec chatham 5r4wga rectifier tube has black plates, bottom getters, and a rugged ceramic base.
You should consult the manufacturer of your equipment too if. The 80 rectifier tubes is intended for radios or small amplifiers. In addition, when changing to a higher output rectifier in a self biasing aka cathode biased amp, eg, champ and others never assume that the power tube s isare safe. When installing a different rectifier tube, especially from one that gives a greater drop to one that has a lower drop ex. Rectifier tubes 5ar4 gz34 5r4gy tube basics and faq. This 1960s made tube developed for rugged video application has been found in quantity by upscale audio, in upland, ca. The 83 is a mercury vapor rectifier with a very low internal voltage drop between the cathode and plates. Tube 5w4 or rohre 5w4 id3241, fullwave vacuum rectifier, octal int. Adding the diode increases the peak inverse voltage capacity of the 5ar4 and prevents the flashover. They are listed here as well as on the power tubes page. The vdrop is the voltage drop across the rectifier, those numbers 17, 25, 60, 67 are oversimplified, the actual vdrop will depend on the actual incoming ac voltage becing rectified. Data sheet for model k2w operational amplifier, george a.
This 1960s made tube developed for rugged video application has. Before the development of silicon semiconductor rectifiers, vacuum tube thermionic diodes and copper oxide or seleniumbased metal rectifier stacks were used. The yellow label on the base has the sylvania logo. The maximum reservoir capacitor is specified at 4 f and the rectifier needs a series resistance of 250. My anthem has originally had a 5ar4 but came with a jan 5y3gt in the power supply. The nos philips 5r4gys rectifier tube replaces gz345ar4 bargain priced. The 5ar4 gz34 has the least vdrop, then the 5v4, then the 5r4 and finally the 5y3. I have found the voltage drops listed to be a pretty accurate rule of thumb. I have an air tight htm300 amp which has tube rectification.
The 5ar4gz34 has the least vdrop, then the 5v4, then the 5r4 and. Rectifier comparison and interchangeability chart kca nos. Philips jan 5u4gb fullwave vacuum tube rectifier, an ideal choice for all tube amplifiers. Divider fundamental properties of vacuum tubes 1 vacuum tube ratings 2. Solid state rectifier direct plugin replacement for 5ar4, 5u4 and 5y3 rectifier vacuum tubes in amplifiers with center tapped secondary power transformer.
Therefore, the same data can be utilized v to study the variation of with p. The 5u4g is no longer the tube of choice for new mesa amps that feature a 5u4 type rectifier tube. Tube 35y4 or rohre 35y4 id3233, halfwave vacuum rectifier, loctal8, b8g sylvania, 1938 and powersupply shown. However the manual states this tube the 5ar4 may be replaced with the 5y3 rectifier tube. The 5r4gy is a high voltage power rectifier and was designed for transmitter use. Always check the bias and idle power of the tube with the new rectifier to be certain that it is running within spec. This is a suitable replacement for any 371bvt166 rectifier tube type. Secondly, if it is used in a tube tester, the filament current can also become an important influence on the testers calibration. The mesa 5ar4 rectifier tube produces a vintage feel with light to mild sag. The 5ar4 and gz34 is an indirectly heated cathode tube which means it takes longer to warm up. It was a conventional fullwave rectifier tube with two anodes and one cathode, but was unique in that it had no filament thus the 0 in its type number. One of the best sounding 5u4g fullwave rectifier you can find other than the famed gec u52, and the western electric 274a and 274b. Types 117l7 through 117p7 contain a half wave rectifier and beam power amplifier.
Welcome to the tube data sheet locator, a popular web resource for finding data on vacuum tubes. The use of passive filters to reduce the harmonic content ripple of the. I dont know where i got this from, but given the discussions of late regarding over voltages, i thought this table of common rectifier specifications might be useful to the forum. I am working on posting the rca hb3 tube handbook on line on this site on its own page. Frank philipse pocnet mirror patrik schindler 5r4g. While it produces more sag than silicon diodes, it is the least saggy of our tube rectifier offerings. Rectifier tubes this page contains a list of rectifier tubes some of which may be obsolete. When you change the rectifier tube in an amp, it changes the voltages in an amp. The first was not an amplifier, but a twoelement vacuum tubebased rectifier. In addition to a complete, uptodate data section on receiving tubes, it contains the. The better subs are solid state, with a resistor to take the place of the filament. The tube will burn out prematurely if the amp demands more than 125ma on a regular basis. B15 5ar4 diode mod discussion in amps and cabs bg started by rickenbackerman, mar 23, 2014.
Made jan joint army navy tubes have passed the most stringent of tests uncle sam could require from a manufacturer. Be careful when going to a higher rated rectifier in 6v6 amps. The jj gz34 5ar4 is a good and reliable rectifier tube suitable for use in both guitar amps e. This book, electron tubes, volume i, is the ninth volume in the rca technical. If you have never used this facility before, click the help link. There are various sources for rectifier tube data sheets free on the net. The type 80 tube uses what is known as the ux4 base and as long as i select another fullwave rectifier with the same pinout and base requirement i shouldnt have any trouble. This is the rectifier tube according to kevin deal of upscale audio. The adjustment to the new operating point via a change in rectifier tube type is attributable to the differences in voltage drop between the two rectifiers. They produce a similar voltage drop to 5u4 rectifiers but require only 2 amps of heaterfilament current from the power transformer as opposed to 3 amps for a 5u4. This makes them good substitutes for the other rectifier types when different output voltage is.
Rectifier tubes having only one plate and one cathode, such as the 35w4, are called halfwave rectifiers. The black print on the base has the chatham logo and reads jancahg5r4wga made in usa partial. Ive rolled a number of nos types over the last three years and am wondering two things. Due to tall coke bottle design, this tube may not fit in all amplifiers. 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. The effects on the rectifier behaviour of the inductive components of the load and of the ac line will be investigated. This 5u4g tube is brand new nos in original uk military box, and was made at the thorn factory made in the 1950s we only have one piece in stock shown in the picture withd getter and brown base. If you can contribute this data pleas email it to me. Its very similar to 6z4 rectifier tube,only the difference in pin assignment. Rectifier comparison and interchangeability chart kca.
Limited quantity available, new old stock, not for export. I also have noticed that a general 5u4grectifer tube rolling. This is the rectifier tube that is used in all juketone valve amplifiers. With the introduction of semiconductor electronics, vacuum tube rectifiers became obsolete, except for some enthusiasts of vacuum tube audio equipment. I have been wanting to create this thread for quite some time now, since i often receive pms and questions asking for advice on tube rolling. Not sure if this is a function of the degree to which the rectifier tube can impact the sound or simply that the sonic difference between these rectifier tubes is less significant. Russian tube 5c3s is a quality equivalent of the 5u4g. Rectifier interchangeability and its relation to clean headroom.
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