274b tube data sheet

This latest high performance design better controls both electrical and vibrational resonances that blur imaging for greater clarity to the source. You can choose between the two based on your budget. The gz34 is a total other kind of rectifier tube like the 5u4g. These tubes are a full wave rectifiers, electrically equivalent to the original western electric historical tubes. Tube 274b or rohre 274b id7451, fullwave vacuum rectifier, octal int. Here you have a magnificent example of a we replica 274b rectifier tube made by shuguang, their top line product and design made by their most experienced technicians with the most advanced materials. 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 tubes isare safe. Solidly made and very low in microphonics make this a no brainer to properly power the finest tube amplification.

Mar 17, 2017 this was achieved by changing the thoriated tungsten filament to an oxide coated one. Dimensions, outline diagrams of the tube and base, and the arrangement of electrode connections to the base terminals are shown in figures 1 and 2. We274b274b western electric replica rectitifer tube. Designed to compliment to aqua 274b and classic 300b tubes, the new 6sn7 is a great choice to replace vintage 6sn7 tubes in all tube preamplifiers and tube amplifiers. Rectifier comparison and interchangeability chart kca nos. Purchase preferred series 274b 5u4g vacuum tubes online, in stock and ready to ship. In most applications the ux112a could simply drop in to a socket meant for the ux201a. Rca rc10 tubemanual 1933 complements of tim reese and harvarduniversity. Description this data sheet applies for the 5z3mesh and 5u4gmesh, which are electrically identical, apart from the sockets. One of the best 274b tubes in the current production. 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.

Rare nos pair chs 274b military tubes sylvania 1940s 274b sub western. I have an air tight htm300 amp which has tube rectification. See the cunningham data sheet for all technical parameters of this tube. The mechanical transformer hum, and also tube current peaks are greatly reduced by smaller capacitor values, and use higher choke values instead. These are direct replacements for the historical 5u4g or 5z3. Valve tube retro vintage modern hifi electronic schematics, vacuum tube.

One 1 piece acme 274b rectifier tube balloon shape special. This is what psvane audio boasts about their we274b replica tube. The preferred series 274b tube is a fullwave rectifier that is very similar to the classic 5u4g. Our ps274b tube is a beautiful large coke bottle shaped rectifier tube with large black plates. For this reason, the first capacitor c1 should never be larger than stated in the data sheet.

I also have noticed that a general 5u4grectifer tube rolling. It is dedicated to be used in audio frequency range which requires the output power 100w. The text material has been selected and arranged with the view of guiding the circuit designer most readily to the western electric tube which will meet his requirements for particular applications. It comprises two filament type diode units with a common filament. Ac plate voltage per plate rms 660 volts dc output current 225 ma minimum inputchoke inductance 2 henrys. Shuguang beijing vacuum tube datasheet analog metric limited. It owns a voltage loss compared to the 5u4g discussed here. Increasing the cathode bias resistor is often necessary. Compared to the hifi274b, the we274b is smaller in size identical size as the orginal we274b while the psvane hifi274b is of the same size as an average 300b tube. The 274b tube is designed to supply direct current up to 200 milliamperes from an alternating current source. While the audio world still holds western electric vacuum tubes as the holy grail but the availability is so remote and more info.

Eml tubes are the finest handbuilt tubes available. Recent listings manufacturer directory get instant insight into any electronic component. The tube amp doctor 5y3gt 6087 is a small bottle rectifier designed to perform closely to the original rectifier tubes used in many 1950s tweed amplifiers. Always check the bias and idle power of the tube with the new rectifier to be certain that it is running within spec. Dcac voltage 5 v dcac current 2 a fullwave, thermionic high vacuum rectifier maximum ratings with chokeinput filter. These tubes are a full wave rectifiers of a special kind, and electrically equivalent to the original weste. Kr audio electronics hi vacuum tube kr 274b general data filament specifications. Filament voltage and current stayed the same 5v, 0. This tube is produced for us in china by the shuguang factory. Note3 you can replace tubes like 5u4g with this tube, when you are sure of these things. Top results 6 part ecad model manufacturer description datasheet download. Ive rolled a number of nos types over the last three years and am wondering two things.

For sound, hifi 274b has nice top extension but balance of tonality is not comparable to the 1. This current draw makes it acceptable for many amps originally designed for a 5ar4gz34 tube. This one has a lot of pages from the european philips tube manual. Click on a tube to see the data sheet located in the description. Details about original authentic electube data sheet from tube 300b western electric. Here is some data on the power triodes that might be usable by amateurs for radio projects. This data sheet applies for the 5z3mesh and 5u4gmesh, which are electrically identical, apart from the sockets.

Our ps 274b tube is a beautiful large coke bottle shaped rectifier tube with large black plates. Similar to vintage we274b, unique in balloon shape with black plate, gold pin with metal base which recreate the balanced tone, deep, tight bass, sweet mids and welldefined highs. The kr audio 274b hp rectifier tube is a perfect compliment to any tube amplifiers high voltage power supply. This rectifier offers high reliability due to its rugged construction and the tube amp doctor premium selection process. These tubes are a full wave rectifiers of a special kind, and electrically equivalent to the original western electric historical tubes.

These tubes are a full wave rectifiers of a special kind, and electrically. This new blue glass 6sn7 has rich tonality and big sound stage. The tad 5y3gt is a great tube for vintage style sag compression. It has a plate dissipation of 10 watts which is good for about 1. This was achieved by changing the thoriated tungsten filament to an oxide coated one.

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. Our tubes feature a series connected filament for both diodes together. Where possible, eimac data sheets are provided, as eimac tubes are used by so many hams. Original authentic electube data sheet from tube 300b western. Psvane acme supreme series 274b vacuum tubes single psvane acme supreme series is created with the intention to top the tube world, be it nos or new production. Direct heating cathode, medium power consumption triode is used for class a amplification. Space may be an issued in some amps so be sure to check this. Vacuum tube 274b, valve art antique electronic supply. Emission labs produces very special, high quality, handbuilt electron tubes in the czech republic. Its virtually an exact copy of the original using modern alloys and materials. Try searching the tube data sheet locator, the worlds biggest index of tube datasheets other pages online with tube data.