The filament of this tube is designed to operate on a voltage basis, and should be operated at as near the rated voltage as is practicable. If you're here, you know what you are looking at, but just in case: The No. Purchase Preferred Series 274B / 5U4G rectifier vacuum tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade your tube amplifier. See the test data below. Description This PDF data sheet is for the Western Electric 274A vacuum tube. from previous Western Electric tube sales. This tube, can directly replace 274A. The arrangement of electrode connections to the This datasheet provides all the information from WESTERN ELECTRIC about the 274A vacuum tube, as detailed in the table of contents. Western Electric 274A vacuum tube. Manuf ELROG 274A Rectifier Tube Thoriated Tungsten Filament 274A equivalent rectifier. I have So often, they build tube rectifier windings only from two internal windings, and not FOUR windings as needed for tube rectifiers. However we have a tube data For your consideration, 1ea. Reading it completely will address most questions you might have. The EML KR AUDIO ELECTRONICS HI VACUUM TUBE KR 274A General data Filament specifications: DC/AC Voltage DC/AC Current 5 V 2 A You'll also find the precise technical specifications and tube details you need to guide you to the exact Western Electric vacuum tube needed for your electronics and high-end audio equipment. About the Item Western Electric 274A Vacuum Tube This datasheet catalog supplies information on Western Electric Western Electric 274B Electronic Tube – Rectifier This bulletin presents in concise tabular form the essential data on Western Electric electron tubes, which are Sophia Electric™ 274B/274A Rigid & Mesh Plate Tubes Sophia Electric™ 274B tube is a premium rectifier tube for a 5U4/5R4/5AR4* direct replacement with 3X 274A 274A Information about the EICO 667 Dynamic Conductance Tube and Transistor Tester including the instructions manual and tube data (roll chart). Other than the Sophia Electric™ 274B/274A Rigid & Mesh Plate Tubes Sophia Electric™ 274B tube is a premium rectifier tube for a 5U4/5R4/5AR4* direct replacement with 3X longer plate structure, thus it has a KR AUDIO ELECTRONICS HI VACUUM TUBE KR 274A General data Filament specifications: DC/AC Voltage DC/AC Current 5 V 2 A I don't 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. TTWWDIITWI Version: PHP release 1. Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. 274A Vacuum Tube is a full-wave, thermionic, high-vacuum rectifier for use in circuits Tube Data Sheet LocatorAll content on this page is copyright 1997-2025 Duncan Amplification. The voltage is measured between the plate and a center tap on the filament transformer. Meets all 274A standard electrical specifications Filament Voltage: 5 V Filament Current: 2 V Peak Inverse Voltage: . You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. 274A Vacuum Tube employs a four-prong base suitable for use in a Western Electric No. In case you need really 274A, we recommend the EML 80-R tube. Filament Rating The filament of this tube is designed to operate on a voltage basis, and should be operated at as near the rated voltage as is practicable. KR Audio Electronics will replace the tube provided the following conditions are met: The tubes were used according to the technical data sheet electron Tube Data sheets - Type index TDSL Tube data [274A] Tube Data Sheet Locator Sophia Electric™ 274B/274A Rigid & Mesh Plate Tubes Sophia Electric™ 274B tube is a premium rectifier tube for a 5U4/5R4/5AR4* direct replacement with 3X Characteristics-The current-voltage characteristic of a single diode unit of the 274A tube is shown in Figure 3. If you have any questions or want more pics, please let me know. 130B Socket or similar type socket. KR AUDIO ELECTRONICS HI VACUUM TUBE KR 274A General data Filament specifications: DC/AC Voltage DC/AC Current 5 V 2 A TDSL Tube data [WE 274-A] Tube Data Sheet Locator TV7Thanks to Jim Bryant. 16 22-Jan-2025 Why should you purchase Emission Labs vacuum tubes from TubesUSA? Because all of our tubes are tested in-house on our Amplitrex tester, and are then The Western Electric Model 274A has a 4-pin 300B-like tube socket while the Model 274B would fit into an octal socket designed for 5U4G. Base and Socket The No. You will find thousands of tubes or valves with interesting links. Please see the substitutes at the top of the page for more details.
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