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December Learn how and when to remove this template message. Collection of Bartosz Szwed GB.
12AX7 – Wikipedia
Vacuum tubes Guitar amplification tubes. Collection of Tor Steinnes N. Collection of Christian Schaufelberger CH. You will find thousands of tubes or valves with interesting links. Collection of Michael Wenzel D. The 12AX7 is the most common member of what eventually became a large family of twin-triode vacuum tubes, manufactured dafasheet over the world, all sharing the same pinout EIA 9A.
The initial “12” in the designator implies a volt heater requirement; however, the tube has a center-tapped heater so it can be used in either 6. Collection of Werner Braun D.
Collection of Wolfgang Steeger D. In European usage special-quality valves of some sort were often indicated by exchanging letters and digits in the name: The 12AX7 was originally intended as daatsheet for the 6SL7 family of dual-triode amplifier tubes for audio applications. Collection of Reinhard Riek D. Collection of Tony Smith GB.
Collection of Jacky Parmentier F. Collection of Patrice Zeissloff F. RTT Franzis Collection of Trev Levick D.
ECC83 @ The Valve Museum
Collection of Stig Comstedt S. Collection of Otto Frosinn D. Different versions of each were designed for enhanced ruggedness, low microphonicsstability, lifespan, etc. Collection of Tomasz Szczesniak PL.
They span a wide range of voltage gain and transconductance. Articles containing potentially dated statements from All articles containing potentially dated statements Articles needing additional references from December All articles needing additional references. Collection of Giorgio Busletta I.
Retrieved from ” https: If the cathode resistor is unbypassed, negative feedback is introduced and each half of a 12AX7 provides a typical voltage gain of about 30; the amplification factor is basically twice the maximum stage gain, as the plate impedance must be matched.
It can, of course, be wired for operation off either voltage. Collection of Reinhard Hopfe D. The ‘E’ in the European designation classifies this as having a 6. This page was last edited on 15 Decemberat Collection of Emilio Ciardiello I. Collection of Ekkehard Pfau D. Collection of Bekir Yurdakul F. The 6AV6 is a miniature repackaging with just a single cathode of the triode and twin diodes from the octal 6SQ7 a double-diode triode used in AM radioswhich itself is very similar to the older type 75 triode-diode dating from Unsourced material may be challenged and removed.
Erb Analysis by original leaflets.
ECC83-TK Tube Data Sheet
Collection of Hermann Fleischanderl A. Collection of James Firth GB. The 12AX7 is a high-gain typical amplification factorlow-plate-current triode best suited for low-level audio voltage amplification. Please help improve this section by adding citations to reliable sources. The cathode resistor can be bypassed to reduce or eliminate AC negative feedback and thereby increase gain; maximum gain is about 60 times. 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.
A 12AX7 ‘Shootout ‘ “. It has relatively high Miller capacitance, making it unsuitable for radio-frequency use. Collection of Danko Tkalec HR. In this role it is widely used for the preamplifier input and mid-level stages of audio amplifiers.
Antique radios, Old Time Radios.