Double diode triode

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A double diode triode is a type of electronic vacuum tube widely used in radio receivers. The tube has a triode for amplification, along with two diodes used as detectors, or Automatic gain control. Some common types are the 55, 12SQ7, 12AV6.

[edit] References

RCA Receiving Tube Manual, Series RC-12, RC-19, RC 25 - Published by RCA.