Many of these types had gold-plated base pins and special heater configurations inside the nickel cathode tube designed to reduce hum pickup from the A. For transmitting tubes in this system, the second element starts with a hyphen, a sequentially assigned number, then a optional letter specifying cooling method. A few special-quality tubes did not have a standard equivalent, e. Collection of Christian Schaufelberger CH. Vacuum tubes which had special qualities French: Media related to Tungsram vacuum tubes at Wikimedia Commons.
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Dokree Media related to Valvo gas discharge tubes at Wikimedia Commons. Collection of Ottmar Rollmann D. Used in s home radios powered by dry cells filaments and storage batteries B-plus voltage. This system consists of one or more letters followed by a sequentially assigned number . High-power RF power tubes are directly heated; the heater voltage must be much smaller than the signal voltage on the grid and is therefore in the A few special-quality tubes did not have a standard equivalent, e.
Retrieved 26 Dec Text in other languages may differ. Retrieved 19 November Retrieved 11 September Like the British military system, these have many direct equivalents in the civilian types. Media related to Lamina gas discharge tubes at Wikimedia Commons. Quantity of Models at Radiomuseum. However, device numbers do not reveal any similarity between different type families; e. For examples see below. British General Electric Company:. The first element designates function.
Used in s home radios. Media related to Philips gas discharge tubes at Wikimedia Commons. Datasheets search archive of electronic components datasheets The first system was introduced in Collection of Jacky Parmentier F. Institute of Radio Engineers. From Wikipedia, the free encyclopedia. Collection of Tomasz Szczesniak PL. The following letter indicates the filament or cathode type, or the fill gas or other construction detail.
Valvo deit was a major German electronic components manufacturer from to ; a Philips subsidiary sinceValvo was one of the predecessors of NXP Semiconductors. It consisted of one or two letters designating system type andoptionally, type of cathodea hyphen, then a sequentially assigned number with up to 3 digits.
Collection of Guido Pedrali Noy I. Rundfunk- und Fernmelde-Technik desv was the brand of a group of telecommunications manufacturers in the German Democratic Republic. Collection of Bekir Yurdakul F. Related Posts.
Российские аналоги зарубежных радиоламп используемые в усилителях
Vukazahn Many later tubes were designated one to three semi-intuitive letters, followed by a number containing the heater voltage. Most of these are special quality versions of the equivalents given. Heater or filament rating . Structure and usage . Daatsheet of the following tubes are designed to operate with their heaters connected directly to the volt now volt electrical mains of North America. Vacuum tubes produced in the former Soviet Union and in present-day Russia are designated in Cyrillic. Federal communication laboratoriesInc.
Often designations that differed only in their initial numerals would be identical except for heater characteristics. Telefunken Laborbuch in German. You reach this tube or valve page from a search after clicking the dataheet tab or by clicking a tube on a radio model page. This numbering scheme was intended to differentiate these tubes from the tubes with 2. A four-digit system was maintained by the EIA for special industrial, military and professional vacuum and gas-filled tubes, and all sorts of other devices requiring to be sealed off against the external atmosphere. Devices in the low daatsheet tend to be transmitter output types, those in the higher s are not vacuum tubes, but gas-filled rectifiers and thyratronsand those in the s tend to ecx85 special-purpose and high-frequency devices. While the E80F pentode was a high quality development of the EF80, they were not pin-compatible and could not be interchanged without rewiring the socket the E80F is commonly sought after satasheet a high quality replacement for the similar EF86 type in guitar amplifiers.