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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The 12AX7 is basically two of the triodes from a 6AV6 – a double diode triode. Terry, not sure if he replied to you, but contact Jim Sharkey at Junksville Guitars and he’ll give y Gary: Key data and drawings are shown below, or you can download the 12ax7 Datasheet in PDF format. How do I go about purchasing the Grizzly H guitar kit giorgos: The vast majority are used in new-production guitar amplifiers or for replacements in guitar and audio equipment.

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 12AX7 was originally intended as replacement for the 6SL7 family of dual-triode amplifier tubes for audio applications.


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.

Articles containing potentially dated statements from All articles containing potentially dated statements Articles needing additional references from December All articles needing additional references. The amplifier is in a perfect condition.

TDSL Tube data [12AX7]

From Wikipedia, the free encyclopedia. It can, of course, be wired for operation off either voltage. All information is deemed reliable but not guaranteed. Grid bias is most often provided by a cathode resistor.

12AX7 (GEC) – Twin Triode | eet

Comments 3 Trackback URL. Views Read Dataaheet View history. 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.

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Popular Recent Comments Archives. Retrieved from ” https: It has relatively high Miller capacitance, making it unsuitable for radio-frequency use. In European usage special-quality valves of some sort were often indicated by exchanging letters and digits in the name: Avatars by Sterling Adventures.


Kit Building 101

Most use heaters which can be optionally wired in series A center-tapped heater permits operation of the tube from either a 6. December Learn how and when to remove this template message. It was released for public sale under the 12AX7 identifier on September 15, 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.

Hi, I have a roland cube 30 witch I rarely use. This section does not cite any sources. 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 rightsone in China Shuguangand one in Slovakia JJ Electronicfor a total annual production estimated at two million units.

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