Imo if someone is installing a tube rectifier to avoid installing a standby switch, its dollar foolish, and penny wise. Tubes 5y3gt twin diode for fullwave power rectifier applications 5y3gt ett965 page 1 1055 description and rating the 5y3gt is a filamentary twindiode designed for fullwave rectifier, 8 max m retma 9 or 942 5y3gt ett965. Always check the bias and idle power of the tube with the new rectifier to be certain that it is running within spec. 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. Rectifier comparison and interchangeability chart kca. It also doesnt make convert the amp to ss rectification, the tube is still there doing its job. The sovtek 5y3gt tube is an indirectly heated fullwave rectifier tube intended for rectification in general purpose audio equipment. The mesa 5y3 is a true, authentic 5y3 nos new old stock equivalent modeled after the original phillips 5y3 and is built to our exacting specification for use in our lone star special this tube produces a sultry vintage sag, creating a silky, smooth feel on the strings and provides the most sag of all of our rectifier tubes. I would have to put the old tube in and record myself to see if there was a difference in volume ill. Sep 09, 2007 my anthem has originally had a 5ar4 but came with a jan 5y3gt in the power supply.
Amps with tube rectifiers are problematic in the rectifier tube doesnt start working until about 50 volts ac are applied. This tube has a filament which is also the cathode, rather than a separate cathode pin. If you cant find or dont have a transformer with a 5 volt winding one of the 6ax5 circuits may be for you. And only when the power supply caps are discharged. It has found wide use in tube radios and early guitar amplifiers of the fender champ type. Welcome to tubedepot javascript must be enabled to use this site. Jj gz34 5ar4 datasheet pdf download adobe acrobat pdf reader. Double anode rectifying tube 5y3s is an octal rectifier diode with a true directly heated cathode. Increasing the cathode bias resistor is often necessary. Some of you might have been asking the same questions as i did does tube rectifier change sound. I have a sovtek 5y3 in my 6g25e3 build it did raise the b a bit. Rectifier may be defined as an electronic device used to convert ac voltage or current into unidirectional voltage or current. This slowrise, indirectlyheated rectifier should be considered an upgrade for a 5y3 tube in most circuits, and will drop slightly less voltage. Frank philipse pocnet mirror patrik schindler 5y3gt.
The 5y3gt is a filamentary twindiode designed for fullwave rectifier operation in power supplies. Solid state rectifier direct plugin replacement for 5ar4, 5u4 and 5y3 rectifier tubes in amplifiers with center tapped secondary power transformer. I thought of trying the 5v4 but feel it might raise my. The circuits that use a 5y3 rectifier tube require a transformer with a 5 volt 2 amp winding for the tubes filament. Frank philipse pocnet mirror patrik schindler 5y3g. I was told by an expert that it would give me more volume, but i cant tell the difference. This makes them good substitutes for the other rectifier types when different output voltage is.
To test this, i put together an amp that takes 5u4 rectifier, but could be easily be replaced with 5y3, 5z3, 5ar4 and of course solid state rectifier. The 5u4g is no longer the tube of choice for new mesa amps that feature a 5u4 type rectifier tube. The 5y3, on the other hand, shines in amps smaller than 15 watts. Diode has unidirectional property hence suitable for rectifier.
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. Click and register to be notified when its back in stock again. Tube 5y3 or rohre 5y3 id3114, fullwave vacuum rectifier, octal int. It may or may not be important to you but it may to the amplifier owner, especially if hes a blues guitarist or harpist. The circuit snippet shows a common tube rectifier like a 5y3. The lower, centertapped winding shows the large ac voltage to the plates which is going to be rectified by the diode action of the tube. From experience, replacing a tube with a ss rectifier in a fender amp, or any instrument amp, may change the sound at medium to high volume as the sagging of the tube does influence the sound. All high voltage windings have been specified as the full voltage followed by the letters ct which stand for center tapped.
Any of these classic tubes is a solid choice for any amp that it fits, whether its a. Octal rectifier tube max dc output current 125 ma an indirectly heated diode intended for rectification of commercialfrequency alternating current. The 1970s rca 5y3gt fullwave rectifier tubes in this precisely matched pair have black plates and bottom d getters. You can raise the dc voltages in the amp by swapping out the 5y3 rectifier tube for a higher output tube but be careful because your 6v6 power tubes can be damaged by too high a plate voltage. The effects on the rectifier behaviour of the inductive components of the load and of the ac line will be investigated. The jj gz34 5ar4 tube is another affordable replacement rectifier tube for both guitar and hifi tube amplifiers. Antique radio forums view topic solidstate rectifier plans. My anthem has originally had a 5ar4 but came with a jan 5y3gt in the power supply. When the caps are discharged, there is an initial voltage surge till the caps get.
Rectifier tubes tagged 5ar4 gz34 5r4gy upscale audio. You can now replace either tube, or both with reliability and the knowledge that the operating values will be within the. Substituting a solid state rectifier in these cases lets the amp start working at lower voltages. It doesnt affect the sag that the tube rectifier provides to the amp. It is virtually identical, electrically, to the older fourpin type 80 tube, but with an octal base.
I found one site that lists it at 140 ma but does not spec the voltage above a real 5y3. It has a 140 ma maximum output and filament voltage of 5 v and a filament current of 2 a 0. Rectifier tubespros and cons tube amp information, guitar. A 5r4 would work with about 20 volts more voltage drop vs a 5u4, yet does have the lower 2. Antique radio forums view topic 5y3 substitute for 5z4. Jj electronic vacuum tubes, capacitors, amplifiers. Vacuum tube 5y3gt, sovtek antique electronic supply. I have simulated, with psu2 program, for example the substitution of a 5y3 with a couple of 1n4007.
The bigger problem is the voltage drop across the rectifier tube from 20 to 40v, according to the circuit and to the current request. This means you can use most octal rectifier tubes, but each will yield different results. The silver print on the has the otk inspection stamp. Antique radio forums view topic solidstate rectifier. This vintage russian 54 5u4c rectifier is a 5z4 equivalent. Tube 5z3 or rohre 5z3 id3242, fullwave vacuum rectifier, uxbase 4 pins 2 thick, usa 1924, ux and powersupply shown. However the manual states this tube the 5ar4 may be replaced with the 5y3 rectifier tube. Rectifier comparison and interchangeability chart kca nos.
Youll need a burned out tube, and 4 diodes 1n4007, 1n5403, etc. The circuits that use a 5y3 rectifier tube require a transformer with a 5 volt 2 amp winding for the tube s filament. The use of passive filters to reduce the harmonic content ripple of the. Makes it easy to change between tube and solid state rectification. Rca 5z3 fullwave rectifier the 5z3 is a highvacuum rectifier of the fullwave type intended, resistance and of adequate currentcarrying capacity. The 5z4, like the 5v4 and 5ar4, has a cathode sleeve tied to the heater. You can now replace either tube, or both with reliability and the knowledge that the operating values will be within the hickok tolerances and your tester will. The lower, centertapped winding shows the large ac voltage to the plates which is. I have produced an effective solid state replacement for the 83 mercury vapor rectifier tube a hazardous waste item today and the 5y3 rectifier tube for use in hickok tube testers. Eimac power grid tubes quick reference catalog 175 pdf. Jan 19, 2017 the circuit snippet shows a common tube rectifier like a 5y3. Due to tall coke bottle design, this tube may not fit in all amplifiers.
I believe this is one of the reasons the amp lost some of the sound and touch sensitivity you enjoyed. Solid state rectifier direct plugin replacement for 5ar4, 5u4 and 5y3 rectifier vacuum tubes in amplifiers with center tapped secondary power transformer. Double anode rectifying tube gz34s is 5ar4 octal base rectifier diode. Please see the substitutes at the top of the page for more details. Solid state plug in rectifier 5u4 5ar4 5y3 triode usa tube. Solid state rectifier for 5ar4, 5u4, 5y3 tubes antique. This is a list of vacuum tubes or thermionic valves, and lowpressure gasfilled tubes. The 5y3 is a mediumpower directly heated fullwave rectifier vacuum tube introduced by rca. Tube substitution guides recommend a 5v4 to replace the 5z4, but they dont recommend a 5y3 or any other filamenttype rectifier, even though their current ratings are not grossly different.
142 1510 902 421 746 1524 1513 888 142 503 1053 1372 1517 1332 108 986 1183 1199 926 1134 1232 278 750 1103 1058 1004 1078 158 1538 857 974 1555 1416 252 1583 218 340 99 825 339 1113 1412 1471 45 223 1390 583 161