12AX7
Miniature high-gain dual triode vacuum tube / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about ECC83?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
12AX7 (also known as ECC83[1]) is a miniature dual-triode 6AV6 vacuum tube with high voltage gain. Developed around 1946 by RCA engineers[2] in Camden, New Jersey, under developmental number A-4522, it was released for public sale under the 12AX7 identifier on September 15, 1947.
Quick Facts Classification, Service ...
12AX7 | |
---|---|
Classification | Dual triode |
Service | Class-A amplifier |
Height | 2.2 in (56 mm) |
Diameter | 0.8 in (20 mm) |
Cathode | |
Cathode type | Indirectly heated |
Heater voltage | 12.6 V (series) 6.3 V (parallel) |
Heater current | 150 mA (series) 300 mA (parallel) |
Anode | |
Max dissipation Watts | 1 per section |
Max voltage | 300 V |
Socket connections | |
Typical class-A amplifier operation | |
Amplification factor | 100 |
Anode voltage | 250 V |
Anode current | 1.2 mA |
Bias voltage | −2 V |
Anode resistance | 62.5 kΩ |
References | |
Sylvania 12AX7 datasheet |
Close
The 12AX7 was originally intended as replacement for the 6SL7 family of dual-triode amplifier tubes for audio applications. As a popular choice for guitar tube amplifiers, its ongoing use in such equipment makes it one of the few small-signal vacuum tubes in continuous production since it was introduced.