arc converter वाक्य
उदाहरण वाक्य
मोबाइल
- The Poulsen arc converter has a tuned circuit connected across the arc.
- The method was feasible for arc converters up to about 5 kW.
- Only the arc converter with passive frequency conversion was suitable for portable and maritime use.
- Arc converters are rich in harmonics.
- The antenna tuning had to be selective enough to suppress the harmonic output of the arc converter.
- In 1909 the American patents as well as a few arc converters were bought by Cyril F . Elwell.
- Along with the arc converter invented in 1903, the Alexanderson alternator was one of the first radio transmitters that generated continuous waves.
- With the development of the arc converter radio transmitter in 1904, continuous wave ( CW ) modulation began to be used for radiotelegraphy.
- The arc converter consisted of a chamber in which the arc burned in hydrogen gas between a carbon cathode and a water-cooled copper anode.
- Poulsen developed an arc converter in 1908, referred to as the " Poulsen Arc Transmitter ", which was widely used in radio before the advent of vacuum tube technology.
- The Alexanderson alternator produced " purer " continuous waves than the arc converter, whose nonsinusoidal output generated significant harmonics, so the alternator was preferred for long-distance telegraphy.
- Some early CW transmitters employed an arc converter that could not be conveniently Spark transmitters used for this method consumed a lot of bandwidth and caused interference, so it was discouraged by 1921.
- In 1992 the mercury arc converters at Condrongianos and San Dalmazio were decommissioned and two new converters stations built, using air-cooled, air-insulated thyristor valves similar to those supplied for the connection at Lucciana.
- The "'arc converter "', sometimes called the "'arc transmitter "', or "'Poulsen arc "'after Danish engineer Valdemar Poulsen who invented it in 1903, was a variety of continuous sinusoidal waves, it was one of the first technologies used to transmit sound ( amplitude modulation ) by radio.
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