12AX7 GEC | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 4
Technical content
Liectan® TWIN TRIODE TUBES The 12AX7 is a miniature high-mu twin triode each section of which has an BASING DIAGRAM individual cathode connection. The 12AX7 is especially suited for use in re- sistance-coupled voltage amplifiers, phase inverters, multivibrators, and (5) 6) numerous industrial-control circuits where high voltage gain is desired. A 4 S center-tapped heater permits operation of the tube from either a 6.3-volt or ©%; SX® a 12.6-volt heater supply. (\\T a @K(LAY 8) GENERAL Awa Cathode—Coated Unipotential Series Parallel RETMA 9A Envelope—T-6 12, Glass Base—E9-1, Small Button 9-Pin Mounting Position—Any Direct Interelectrode Capacitances TERMINAL CONNECTIONS With Shield* Without Shield Pin 1—Plate (Section 2 Output, Section 1 re 52 0.46 wut Pin 4—Heater Output, Section 2.00200. 0.34 put Pin 5—Heater Pin 6—Plate (Section 1) Pin 7—Grid (Section 1) MAXIMUM RATINGS Pin 8—Cathode (Section 1) DESIGN-CENTER VALUES, EACH SECTION Pin 9—Heater Center-Tap Heater-Cathode Voltage PHYSICAL DIMENSIONS wax CHARACTERISTICS AND TYPICAL OPERATION a CLASS A, AMPLIFIER, EACH SECTION . ew Grid Voltage... oss ed —2 Volts was ly * With external shield (RETMA 315) connected to cathode of section under test. GENERAL @ ELECTRIC rena oa Supertdes ET.T509A dated 2-51
CLASS A RESISTANCE-COUPLED AMPLIFIER EACH SECTION Ro Rgi Ebb = 90 Volts | Ebb = 180 Volts Ebb = 300 Voltg 0.10 |0.24 | 0.1 | 2000 | 38 1100 | 46 | 20 | 900] 50] 40 Esig Rat Ro Rs £0 (0.24 0.24 | 0.1 | 3500 | 43 |6.5| 2000/54 | 18 | 1600} 58 2 | (0.24 |0.51 | 0.4 | 3900 | 49 | 8.6 00 | 59 | 24 | 1800 | 64 | 47 a Rk (0.51 j1.0 | 0.4 | 7800 | 5: 9.1 | 4800 | 64 _| 24 600 | 69 | 46 0.24 0.24 | 10 37 | 3.9 HARE Note: Coupling capacitors (C) should be 0.24 |0.51 | 10 44 | 5.4 60_| 19 67 | 44 selected to give desired frequency 10.51 | 10 0 44 | 5.0 61 | 17 69 | 35 response. Rk should be adequately §6_| 24 Tj 4k bynpassete Notes: 1. €o is maximum RMS voltage output for five percent (5%) total harmonic distortion. 2. Gain measured at 2.0 volts RMS output. 3. For zero-bias data, generator impedance is negligible. AVERAGE CHARACTERISTICS summer sec ceaeerec eects tessa eOetetasazee eee afaeaeeeeec gga gaeeee=caegazveteevetiazzter S80 60000 FEES ee ee tH 1200 ° ° O8 he is 2 PLATE cURGENT IN MILL LAMPERES
AVERAGE PLATE CHARACTERISTICS EACH SECTION O08 GSS EE PE Ce Pe Pe Pe Pe Peep Peep EECM sevassescccueresseusstass QM scscsa MW sedeceesr sa sessauetsscedusssecsecssuscuetsccssnees sucess erece| bal Sessscssescseseue’ Scescesss ssesssssas’ so ssscess’ sssssaaces ssssces PW ssusssscscassecsssccsssesscesses AVERAGE TRANSFER CHARACTERISTICS SaaaseeCeeaeeeaatazseeee fa assreeeeiPHHG aaeeceeeneausneeets SHEEN cSPRTEGT cette Gelo vourase iw vours
140, 140000, rsasssessssssesssscrasssseeasereasszrecessteres:cizecstzereaessqeeestittresamaseeasettesesitteett 2800
190 Zsooooo EE EE eee SL eeeemeereme tL 200 8
= Sauasacneseeess Seusetstscsnens “qsuetssussusesnssessuscscsuussseasargeeecss=: -canitcrscsscrscesners| = MPM ssssesceceecceeeceeseeestazgeapiltttttaattasazsteceeeceeee eeese0>eaegttig ds tastzarattteet tee eS 5 oo © coooo HASSESESLHHSEEEEHH Li SeeHs sesopee eet HESEECS HI Pon Oo EEC TEESE SEELEY eeaaaaastee cH asst eeeeetena ance aaaseeeeeeeg aaseeeecoeitttazeeeeeeentearot tte TUBE DEPARTMENT GENERAL @@ ELECTRIC JO) Schenectady 5, N. Y.