audion वाक्य
उदाहरण वाक्य
मोबाइल
- However, it was Lee De Forest who is credited with inventing the triode tube in 1907 while continuing experiments to improve his original Audion tube, a crude forerunner of the triode.
- The autodyne circuit was invented by Edwin Howard Armstrong of Columbia University, New York, NY . He inserted a tuned circuit in the output circuit of the Audion vacuum tube amplifier.
- By 1928, DuMont was searching for new opportunities and was wooed by Dr . Lee De Forest, a radio pioneer who developed the audion tube, the original voice amplifier for radio reception.
- Instead of trying to stabilize the partial vacuum, he wondered if it was possible to make the Audion function with the total vacuum of a Kenotron, since that was somewhat easier to stabilize.
- A pair of audion tubes connected in push pull is described in Edwin H . Colpitts'US patent 1137384 granted in 1915, although the patent does not specifically claim the push pull connection.
- The Marconi magnetic detector was the " official " detector used by the Marconi Company from 1902 through 1912, when the company began converting to the Fleming valve and Audion-type vacuum tubes.
- He soon realized that his " vacuum " Audion had markedly different characteristics from the De Forest version, and was really a quite different device, capable of linear amplification and at much higher frequencies.
- After the war, Theodore Case and Earl I . Sponable collaborated with fellow wireless communications pioneer Lee de Forest, inventor of the Audion tube, to apply their optical sound system to motion pictures.
- Compared to all competing devices at the time, the Audion was unique in that it did not draw significant power from antenna / tuned circuit, which allowed the tuning circuitry to operate with maximum selectivity.
- However actual amplification by a vacuum tube only became practical with Lee De Forest's 1907 invention of the three-terminal " audion " tube, a crude form of what was to become the triode.
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