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. I also have noticed that a general 5u4grectifer tube rolling. The accomplice uses a 40uf first node filter cap, the 5y3gt datasheet recommends the tube be followed by no more than 20uf. Tube 5r4 or rohre 5r4 id7348, fullwave vacuum rectifier, octal int. The 5ar4 and gz34 is an indirectly heated cathode tube which means it. Solid state rectifier for 5ar4, 5u4, 5y3 tubes antique. Rectifier comparison and interchangeability chart kca nos. I cant speak for te longevity of this tube yet since i. We do not know these differences as the 3bs2b tube data is not available. Looking at the short specs, the 5r4 is a superspec of the 5z4, and therefore on the face of it would replace the 5z4 in the vast majority of rectifier apps. The 5ar4gz34 has the least vdrop, then the 5v4, then the 5r4 and.
These tubes are a full wave rectifiers, electrically equivalent to the original western electric historical tubes. This military spec chatham 5r4wga rectifier tube has black plates, bottom getters, and a rugged ceramic base. Their are a lot of nos ones on ebay as well as good used ones for a low price. However the manual states this tube the 5ar4 may be replaced with the 5y3 rectifier tube. Rectifier tubes tagged 5ar4 gz34 5r4gy upscale audio. This is a very popular rectifier to use in place of 5u4, 5ar4, 5y3, 5v4 and many others. The tube has a straight sided t12 envelope and higher current ratings than the 5u4g. The 5ar4 and gz34 is an indirectly heated cathode tube which means it takes longer to warm up.
Be careful when going to a higher rated rectifier in 6v6 amps. Normally i will allow for a place for the tube rectifier, even if i use diodes. The more of a voltage drop dcv drop you have the more sag or compression you will have. There are various sources for rectifier tube data sheets free on the net. The jj gz34 5ar4 tube is another affordable replacement rectifier tube for both guitar and hifi tube 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. Rectifier comparison and interchangeability chart kca.
See also 5r4wgy for a later version of this design. The 5r4 can handle high plate voltage and is one of the beefier rectifiers. My anthem has originally had a 5ar4 but came with a jan 5y3gt in the power supply. This is a list of vacuum tubes or thermionic valves, and lowpressure gasfilled tubes. 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. The maximum reservoir capacitor is specified at 4 f and the rectifier needs a series resistance of 250. Nov 10, 2012 5r4 5r4gy tube rectifiers a mini shootout posted by lord soth a on november 10, 2012 at 06. Nos cetron jan 5r4 wgb heavy duty rectifier tube military spec kt. You should always avoid having more than 430 volts across a 6v6 plate voltage minus cathode voltage. The tube will burn out prematurely if the amp demands more than 125ma on a regular basis. I cant speak for te longevity of this tube yet since i havent had it for that long, but performance to date is great. Try searching the tube data sheet locator, the worlds biggest index of tube datasheets other pages online with tube data. Tube 5v4 or rohre 5v4 id6374, highvacuum rectifier, octal int. Frank philipse pocnet mirror patrik schindler 5r4g.
International rectifier catalog first page, datasheet, datasheet search, data sheet, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits. Increasing the cathode bias resistor is often necessary. This makes them good substitutes for the other rectifier types when different output voltage is desired. The black print on the base has the chatham logo and reads jancahg5r4wga made in usa partial. 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.
Although it is not a direct sub to the gz345ar4 tube or 5u4g tube, it can be used in many of these circuits. Audiophiles have known for years of the gz37cv378 rectifier tube and its wonderful sound quality. Note 4 there is common misunderstanding that 5u4g and 5u4gb is electrically the same. A 5r4gy rectifier tube is used in a full wave center tapped configuration with a choke input filter.
According to one data sheet, pin 1 on a 5 pin 5r4 is noconnect. Also shown is the current available dc ma from the rectifier and the filament current draw fil amps. Az12 is a 200ma type rectifier, electrically close to rgn2504. The nos mullard gz37 cv378 tube is a indirectly heated fullwave vacuum rectifier tube. Made jan joint army navy tubes have passed the most stringent of tests uncle sam could require from a manufacturer. Jul 12, 2009 looking at the short specs, the 5r4 is a superspec of the 5z4, and therefore on the face of it would replace the 5z4 in the vast majority of rectifier apps. As used in this circuit the 5r4gy can handle a maximum current of about 250ma. Ge 5ar4 datasheet i usually tend to use 5u4gb s as the rectifier when needing a high current tube rectifier and account for the larger voltage drop with the correct transformer however the 5ar4 gz34 is a good tube as well. The 5r4gy is a high voltage power rectifier and was designed for transmitter use. The choke input filter allows the rectifier tube to handle substantially more current than when used with a capacitor input filter. Ths is my 3rd sovtek 5ar4 rectifier tube i have bought for three different diy amplifiers. Always check the bias and idle power of the tube with the new rectifier to be certain that it is running within spec. Tube 5r4 or rohre 5r4 id, fullwave vacuum rectifier, octal, io k8a, usa and powersupply shown.
Before we go forward, its time to make one more check on our rectifier data sheet. Still sealed, same tube as above, same date code on box. 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. International rectifier datasheet pdf catalog first page. The downside to this tube is the voltage drop which is in the 50 volt range. This slowrise, indirectlyheated rectifier should be considered an upgrade for a 5y3 tube in most circuits, and will drop slightly less voltage. Rca rc10 tubemanual 1933 complements of tim reese and harvarduniversity. From our calculated data and figure 5 we determined that the rectifier efficiency was 0.
It has supplies a maximum current of 125ma maxpma, which is borderline when cranking the accomplice, and probably not enough if. The gz34 isnt a very talked about tube, but it is one of the most common rectifier tubes found in audio, especially in guitar amps. Vacuum tube 5ar4, sovtek antique electronic supply. This vintage russian 54 5u4c rectifier is a 5z4 equivalent. Solid state rectifier direct plugin replacement for 5ar4, 5u4 and 5y3 rectifier vacuum tubes in amplifiers with center tapped secondary power transformer. 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. A flat sheet beam is electrostatically deflected across the anode which is. Philips jan 5u4gb fullwave vacuum tube rectifier, an ideal choice for all tube amplifiers.
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