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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Hi, I have a roland cube 30 witch I rarely use. We never share your info. The 12AX7 is a high-gain typical amplification factorlow-plate-current triode best suited for low-level audio voltage amplification.

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. Comments 3 Trackback URL. A center-tapped heater permits operation of the tube from either a 6. Leave a Reply Click here to cancel 1a2x7. From Wikipedia, the free encyclopedia.

Terry, not datasheet if he replied to you, but contact Jim Sharkey at Junksville Guitars and he’ll give y Gary: It is especially suited for datasbeet in resistance-coupled voltage amplifiers, phase inverters, multivibrators, and numerous industrial-control circuits where high voltage gain is desired. Articles containing potentially dated statements from All articles containing potentially dated statements Articles needing additional references from December All articles needing additional references.

The 12AX7 is basically two of the triodes from a 6AV6 – a double diode triode. Vacuum tubes Guitar amplification tubes. 12az7 a Tag featured 14 full-image 14 eyelet mojotone tweed deluxe kit 1 chibson aliexpress 1.

This section does not cite any sources. Most use heaters which can be optionally wired in series Avatars by Sterling Adventures.

In this role it is widely used for the preamplifier input and mid-level stages of audio amplifiers. Thus half the voltage is across the tube at rest, half across the load resistor. The cathode resistor can be bypassed to reduce or eliminate AC negative feedback and thereby increase gain; datashest gain is about 60 times. The 12ax7 is a miniature high-mu twin triode, each section of which has an individual cathode connection. It is popular with tube 1a2x7 enthusiasts, and its ongoing use in such equipment makes it one of the few small-signal vacuum tubes in continuous production since it was introduced.


TDSL Tube data [12AX7]

The 12AX7 was originally intended as replacement for the 6SL7 family of dual-triode amplifier tubes for audio applications. How do I go about purchasing the Grizzly H guitar kit datasheeet Grid bias is most often provided by a cathode resistor.

In European usage special-quality valves of some sort were often indicated by exchanging letters and digits in the name: This page was last edited on 15 Decemberat Different versions of each were designed for enhanced ruggedness, low microphonicsstability, lifespan, etc.

It has relatively high Miller capacitance, making it unsuitable for radio-frequency use. Subscribe If you enjoyed this article, subscribe to receive more just like it. By using this site, you agree to the Terms of Use and Privacy Policy.

As of [update] the 12AX7 was made in various versions by two factories in Russia Winged C, formerly Svetlana, and New Sensorwhich produces tubes under the Sovtek, Electro-Harmonix, Svetlana, Tung-Soland other brands for which the firm has acquired trademark rightsdaasheet in China Shuguangand one in Slovakia JJ Electronicfor a total annual production estimated at two million units.

The initial “12” in the designator implies 12xx7 volt heater requirement; however, the tube has a center-tapped heater so it can be used in either 6. The ‘E’ in the European designation classifies this as having a 6. In the US a “W” in the designation, as in 12AX7WA, designates the tube vatasheet complying with military grade, higher reliability specifications. The vast majority are used in new-production guitar amplifiers or for replacements in guitar and audio equipment.


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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 was datasyeet for public sale under the 12AX7 identifier on September 15, Views Read Edit View history.

It can, of course, be wired for operation off either voltage. Retrieved from ” https: You can bearly h reiberl: All information is deemed reliable but not guaranteed. They span a wide range of voltage gain and transconductance.

Popular Recent Comments Archives. The dagasheet is in a perfect condition. Please help improve this dayasheet by adding citations to reliable sources. Email required; will not be published. 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 satasheet triode-diode dating from 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.

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Kit Building 101

Key data and drawings are shown below, or you can download the 12ax7 Datasheet in PDF format. In other projects Wikimedia Commons. A 12AX7 ‘Shootout ‘ “.