12AX7. High-Mu Twin Triode. 9-PIN MINIATURE TYPE. GENERAL DATA. Electrical: Heater, for Unipotential Cathodes: Heater arrangement. Series Parallel . Resistance – coupled amplifer cathode grid bias. Limiting Values: Ua = V. Wa = 1 W. Ik = 8 mA. Ug = V. Rg = 2,2 MΩ. Uk/f = V. Rk/f = kΩ. 12AX7. 12AX7 Application Data. Class, Va, Vg1, Ia, Ra, S. Triode, , -1, , 80,, Triode, , -2, , 62,, 12AX7 Data sheet links.

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You can bearly h reiberl: A center-tapped heater permits operation of the tube from either a 6. Most use heaters which can be optionally wired in series It has relatively high Miller capacitance, making it unsuitable for radio-frequency use. Vacuum tubes Guitar amplification tubes.

It can, of course, be wired for operation off either voltage. Please help improve this section by adding citations to reliable sources. How do I go about purchasing the Grizzly H guitar kit giorgos: Popular Recent Comments Archives.

Subscribe If you enjoyed this article, subscribe to receive more just like it. The 12AX7 was originally intended as replacement for the 6SL7 family of dual-triode amplifier tubes for datsheet applications.

12AX7 Datasheet(PDF) – General Electric Company

Typically a 12AX7 triode is configured with a high-value plate resistor, k ohms in most guitar amps and k ohms or more in high-fidelity equipment. The cathode resistor can be bypassed to reduce or eliminate AC negative feedback and thereby increase gain; maximum gain is about 60 times.


In this role it is widely used for the preamplifier input and mid-level stages of audio amplifiers. Select a Tag featured 14 full-image 14 eyelet mojotone tweed deluxe kit 1 chibson aliexpress 1. 112ax7

Terry, not sure if he replied to you, but contact Jim Sharkey at Daasheet Guitars and he’ll give y Gary: Avatars by Sterling Adventures. Unsourced material may be challenged and removed. Grid bias is most often provided by a cathode resistor.

The 12AX7 is a high-gain typical amplification factorlow-plate-current triode best suited for low-level audio voltage amplification. Thus half the voltage is across the tube at rest, half across the load resistor. Key data and drawings are shown below, or you can download the 12ax7 Datasheet in PDF format.

Hi, I have a roland cube 30 witch I rarely use.

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 dayasheet the maximum stage gain, as the plate impedance must be matched. In the US a “W” in the designation, as in 12AX7WA, designates the tube as complying with military grade, higher reliability specifications.

The 12AX7 is basically two of the triodes from a 6AV6 – datashfet double diode triode. The 12AX7 is the most common member of what eventually became a large family of twin-triode vacuum tubes, manufactured all over the world, all sharing the same pinout EIA 9A.


This section darasheet not cite any sources. This page was last edited on 15 Decemberat Different versions of each were designed for enhanced ruggedness, low microphonicsstability, lifespan, etc. The ‘E’ in the European designation classifies this as having a 6.

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Articles containing potentially dated statements from All articles containing potentially dated statements Articles needing additional references from December All articles needing additional references. From Wikipedia, the free encyclopedia. Comments 3 Trackback URL. It is especially suited for use in resistance-coupled voltage amplifiers, phase inverters, multivibrators, and numerous industrial-control circuits where high voltage gain is desired.

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 Views Read Edit View history. Retrieved from ” https: