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12AX7 (also known as ECC83) is a miniature dual-triode vacuum tube with high voltage gain. Developed around 1946 by RCA engineers in Camden, New Jersey, under developmental number A-4522, it was released for public sale under the 12AX7 identifier on September 15, 1947.
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tube voltage tubes triode cathode gain resistor ecc83 plate use vacuum audio also heater 12 amplification factor used 100 displaystyle
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| 12AX7 | Amplification factor | 100 | 1.00 | infobox |
| 12AX7 | Anode current | 1.2 mA | 1.00 | infobox |
| 12AX7 | Anode resistance | 62.5 kΩ | 1.00 | infobox |
| 12AX7 | Anode voltage | 250 V | 1.00 | infobox |
| 12AX7 | Bias voltage | −2 V | 1.00 | infobox |
| 12AX7 | Cathode type | Indirectly heated | 1.00 | infobox |
| 12AX7 | Classification | Dual triode | 1.00 | infobox |
| 12AX7 | Diameter | 0.8 in (20 mm) | 1.00 | infobox |
| 12AX7 | Heater current | 150 mA (series) 300 mA (parallel) | 1.00 | infobox |
| 12AX7 | Heater voltage | 12.6 V (series) 6.3 V (parallel) | 1.00 | infobox |
| 12AX7 | Height | 2.2 in (56 mm) | 1.00 | infobox |
| 12AX7 | Max dissipation Watts | 1 per section | 1.00 | infobox |
| 12AX7 | Max voltage | 300 V | 1.00 | infobox |
| 12AX7 | Service | Class-A amplifier | 1.00 | infobox |
| 12AX7 | is a | twin triode basically composed of two of the triodes from a 6AV6 | 0.90 | text |
| 12AX7 | is a | high-gain | 0.90 | text |
| 12AX7 | is a | most common member of what eventually became a large family of twin-triode vacuum tubes | 0.90 | text |
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