12AX7
The 12AX7 (European: ECC83) (P/N 154-043, 154-0043-00) is a dual triode vacuum tube with a B9A (Noval) miniature 9-pin base. The heaters of the two systems can be used in series (12 V, 0.15 A) or parallel (6.3 V, 0.3 A).
The 12AX7 is used in many Tektronix instruments, often as an error amplifier in the power supply, where the tube was chosen for its high gain.
The high-reliability version of the 12AX7 is the 6057 (E83CC). The 5751 is an improved successor.
| Aged/Checked/Matched Pair Details | ||
|---|---|---|
| Used in | Tek Part# | S/N Range |
| 122 | 157-0032-00 | All |
Reference:
Links
Pictures
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157-0032-00
Used in
Some instruments using part 12AX7
| Instrument | Manufacturer | Class | Model | Description | Introduced |
|---|---|---|---|---|---|
| 3C66 | Tektronix | Plug-in | 3C66 | Carrier amplifier plug-in | 1963 |
| 513 | Tektronix | Oscilloscope | 513 | 18 MHz scope | 1950 |
| 524 | Tektronix | Oscilloscope | 524AD | TV waveform monitoring scope | 1953 |
| 531 | Tektronix | Oscilloscope | 531 | 10 MHz oscilloscope | 1954 |
| 535 | Tektronix | Oscilloscope | 535 | 10 (15) MHz dual-timebase scope | 1954 |
| 536 | Tektronix | Oscilloscope | 536 | 11 MHz X–Y oscilloscope | 1957 |
| 545 | Tektronix | Oscilloscope | 545 | 30 (33) MHz oscilloscope | 1955 |
| 545A | Tektronix | Oscilloscope | 545A | 30 (33) MHz oscilloscope | 1959 |
| 545B | Tektronix | Oscilloscope | 545B | 30 (33) MHz oscilloscope | 1964 |
| 546 | Tektronix | Oscilloscope | 546 | 50 MHz oscilloscope | 1964 |
| 547 | Tektronix | Oscilloscope | 547 | 50 MHz oscilloscope | 1964 |
| 549 | Tektronix | Oscilloscope | 549 | 30 MHz storage oscilloscope | 1965 |
| 555 | Tektronix | Oscilloscope | 555 | Dual beam 30 MHz scope | 1959 |
| 570 | Tektronix | Curve Tracer | 570 | Curve tracer for tubes | 1955 |
| 581 | Tektronix | Oscilloscope | 581 | 100 (95) MHz oscilloscope | 1959 |
| 581A | Tektronix | Oscilloscope | 581A | 85 MHz oscilloscope | 1963 |
| 585 | Tektronix | Oscilloscope | 585 | 100 (95) MHz oscilloscope | 1959 |
| 585A | Tektronix | Oscilloscope | 585 | 85 MHz oscilloscope | 1963 |
| E | Tektronix | Plug-in | Type E | Differential amplifier | 1955 |
| Hickok 1825 | Hickok | Plug-in | 1825 | Differential amplifier | 1959 |
| Keithley 610 | Keithley | Multimeter | 610 | Electrometer | 1960 |
| Q | Tektronix | Plug-in | Type Q | Strain gauge preamp plug-in | 1960 |