N5r4 rectifier tube data booklet

Before the development of silicon semiconductor rectifiers, vacuum tube thermionic diodes and copper oxide or seleniumbased metal rectifier stacks were used. I have an air tight htm300 amp which has tube rectification. The use of passive filters to reduce the harmonic content ripple of the. Adding the diode increases the peak inverse voltage capacity of the 5ar4 and prevents the flashover. Remove the rectifier tube and install the solid state tube replacement using a variable. Sylvania electronic tubes t6i sylvania type 6ar8 sheetbeam. I also have noticed that a general 5u4grectifer tube rolling. Philips jan 5u4gb fullwave vacuum tube rectifier, an ideal choice for all tube amplifiers. Rectifier tubes 5ar4 gz34 5r4gy tube basics and faq. Always check the bias and idle power of the tube with the new rectifier to be certain that it is running within spec. Due to tall coke bottle design, this tube may not fit in all amplifiers. 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 have never used this facility before, click the help link. The 5u4g is no longer the tube of choice for new mesa amps that feature a 5u4 type rectifier tube.

I am working on posting the rca hb3 tube handbook on line on this site on its own page. The tube will burn out prematurely if the amp demands more than 125ma on a regular basis. This book, electron tubes, volume i, is the ninth volume in the rca technical. 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. 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. This 1960s made tube developed for rugged video application has been found in quantity by upscale audio, in upland, ca. Therefore, the same data can be utilized v to study the variation of with p. The 5r4gy is a high voltage power rectifier and was designed for transmitter use. Sep 09, 2007 my anthem has originally had a 5ar4 but came with a jan 5y3gt in the power supply. The 5ar4 and gz34 is an indirectly heated cathode tube which means it takes longer to warm up. Russian tube 5c3s is a quality equivalent of the 5u4g. The 5ar4gz34 has the least vdrop, then the 5v4, then the 5r4 and.

There are various sources for rectifier tube data sheets free on the net. This is a suitable replacement for any 371bvt166 rectifier tube type. 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. Nov 10, 2012 5r4 5r4gy tube rectifiers a mini shootout lord soth tubes asylum. Welcome to the tube data sheet locator, a popular web resource for finding data on vacuum tubes. This military spec chatham 5r4wga rectifier tube has black plates, bottom getters, and a rugged ceramic base. This 1960s made tube developed for rugged video application has. Tube 35y4 or rohre 35y4 id3233, halfwave vacuum rectifier, loctal8, b8g sylvania, 1938 and powersupply shown. 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. You should always avoid having more than 430 volts across a 6v6 plate voltage minus cathode voltage. Rectifier interchangeability and its relation to clean headroom. This is the rectifier tube that is used in all juketone valve amplifiers. Data sheet for model k2w operational amplifier, george a. When you change the rectifier tube in an amp, it changes the voltages in an amp.

Rectifier tubes this page contains a list of rectifier tubes some of which may be obsolete. The maximum reservoir capacitor is specified at 4 f and the rectifier needs a series resistance of 250. Rectifier tubes having only one plate and one cathode, such as the 35w4, are called halfwave rectifiers. The better subs are solid state, with a resistor to take the place of the filament. If you can contribute this data pleas email it to me. Rectifier comparison and interchangeability chart kca. Its very similar to 6z4 rectifier tube,only the difference in pin assignment. Frank philipse pocnet mirror patrik schindler 5r4g. The tube that gives you additional vintage tone quality. The 5ar4 gz34 has the least vdrop, then the 5v4, then the 5r4 and finally the 5y3. Increasing the cathode bias resistor is often necessary. This 1960s sylvania 5r4gyb rectifier tube has a tall bottle, smooth black plates, and a side o getter. 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. 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.

Secondly, if it is used in a tube tester, the filament current can also become an important influence on the testers calibration. In addition to a complete, uptodate data section on receiving tubes, it contains the. B15 5ar4 diode mod discussion in amps and cabs bg started by rickenbackerman, mar 23, 2014. While it produces more sag than silicon diodes, it is the least saggy of our tube rectifier offerings. Made jan joint army navy tubes have passed the most stringent of tests uncle sam could require from a manufacturer.

Rectifier tubes tagged 5ar4 gz34 5r4gy upscale audio. The jj gz34 5ar4 is a good and reliable rectifier tube suitable for use in both guitar amps e. Be careful when going to a higher rated rectifier in 6v6 amps. Limited quantity available, new old stock, not for export. 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. The effects on the rectifier behaviour of the inductive components of the load and of the ac line will be investigated. The yellow label on the base has the sylvania logo. They are listed here as well as on the power tubes page. Solid state rectifier direct plugin replacement for 5ar4, 5u4 and 5y3 rectifier vacuum tubes in amplifiers with center tapped secondary power transformer.

With the introduction of semiconductor electronics, vacuum tube rectifiers became obsolete, except for some enthusiasts of vacuum tube audio equipment. The nos philips 5r4gys rectifier tube replaces gz345ar4 bargain priced. Ive rolled a number of nos types over the last three years and am wondering two things. 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. 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. The 83 is a mercury vapor rectifier with a very low internal voltage drop between the cathode and plates. 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. One of the best sounding 5u4g fullwave rectifier you can find other than the famed gec u52, and the western electric 274a and 274b. My anthem has originally had a 5ar4 but came with a jan 5y3gt in the power supply.

You should consult the manufacturer of your equipment too if. Tube 5w4 or rohre 5w4 id3241, fullwave vacuum rectifier, octal int. The black print on the base has the chatham logo and reads jancahg5r4wga made in usa partial. The first was not an amplifier, but a twoelement vacuum tubebased rectifier. When installing a different rectifier tube, especially from one that gives a greater drop to one that has a lower drop ex. The mesa 5ar4 rectifier tube produces a vintage feel with light to mild sag. The 0z4 was a gasfilled rectifier tube commonly used in vacuum tube car radios in the 1940s and 1950s.

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. Divider fundamental properties of vacuum tubes 1 vacuum tube ratings 2. This is the rectifier tube according to kevin deal of upscale audio. The 80 rectifier tubes is intended for radios or small amplifiers. I have found the voltage drops listed to be a pretty accurate rule of thumb. Types 117l7 through 117p7 contain a half wave rectifier and beam power amplifier. 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. However the manual states this tube the 5ar4 may be replaced with the 5y3 rectifier tube. This makes them good substitutes for the other rectifier types when different output voltage is.