Ernst F.W. Alexanderson, in full Ernst Frederik Werner Alexanderson, (born Jan. 25, , Uppsala, Swed.—died May 14, , Schenectady, N.Y., U.S.). Ernst Alexanderson ( – ); a Swedish-American electrical engineer, a pioneer of radio and television development; received US patents. The man who developed the high frequency generator that made this possible, and much more, was Dr. Ernst Alexanderson. Ernst Alexanderson. Alexanderson .

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Ernst F. W. Alexanderson

His team then transferred to RCA where they helped develop our modern system of television. Alexanderson, a Swedish immigrant who became one of GE’s early leading research engineers. Ernst Frederick Werner Alexanderson January 25, — May 14, was a Swedish-American electrical engineerwho was a pioneer in radio and television development. Back to the Engineering Hall of Fame.

He applied for work both at Westinghouse and General Electric. Other notable Alexanderson radio developments include the magnetic amplifier, the electronic amplifier, the multiple tuned antenna, the antistatic receiving antenna and the directional transmitting antenna.

The electric power is generated by an alternator mechanically coupled to the engine, with a rotor field coil supplied with current through slip rings, and a stator with a three-phase winding. Whitehead Edwin H. If Alexanderson was not tenacious and confident he would have likely ended up in a non-impactful job, and the world would not be in the same place it is today.

Alexanderson’s alternator played an important part in history when President Woodrow Enst used it to broadcast his ultimatum to Germany, ending the war. In he married his third wife, having been widowed twice already. Slaby, the inventor of a primitive form of radio communication.


Despite his great intelligence and vision, he later said that he never envisioned the huge social impact of television broadcast. A radio frequency RF generator. Radio technologytransmission and detection of communication signals consisting of electromagnetic waves that travel through the air in a straight line or by reflection from the ionosphere or from a communications satellite.

The GE Research Lab diversified greatly in that decade due to the advent of many new electronic devices. He spoke of the interdependence of a broad range of technologies, and that the GE Research Lab continue to have this integration to drive development. He continued television research as a consultant for the Radio Corporation of America filing his st patent application in He worked on the idea in October and later.

In December Alexanderson came to Schenectady and met with Dr. After a sinking incident in where wireless successfully summoned nearby ships to help, it became apparent that wireless should be required for ships.

Alexanderson, Ernst Frederik Werner (–) |

While Fessenden ended alexandegson at GE after some time, the GE team decided to continue work on alternators. He always negotiated and made his moves carefully.

His st patent granted in was for a color television receiver that he developed for RCA. Alexanderson was not happy about the split of GE and RCA, this would end support for his radio-television research.

Alexanderson was born at Uppsala, Sweden. Stone was thinking about the nexus of AC generator technology and the communication field. Subsequently, he devised a modified repulsion motor for electric railway use, renst he described in a AIEE paper.


Ernst F. Alexanderson

This project was the first major DC link between two AC systems. Alexanderson also created the amplidynea direct current amplifier used during the Second World War for controlling anti-aircraft guns. In he patented a selective-tuning device for radio receivers, which became an integral part of modern radio systems. The first of several kW Alexanderson radio alternators was located at the New Brunswick station in and served as the prototype for a ernwt radio network established by the Radio Corporation of America RCA following its formation in He attended the Technical Alesanderson in Berlin, Germany for one year.

He continued to improve the alternator and in addition made important improvements in radio antennas, electric railroads, ship propulsion, and electric motors.

Inhe made history with yet another of his inventions when his multiple-tuned antenna, antistatic receiver, and magnetic amplifier were used to transmit the first two-way radio conversation. Steinmetz revolutionized the electrical world by changing the way scientists laexanderson engineers thought about electrical circuits.

Meanwhile, he had developed a host of other radio improvements, some of which became increasingly important as vacuum tubes replaced the alternators. Alexanderson divided his time between General Electric and RCA, maintaining his residence and laboratory in Schenectady but personally superintending construction of powerful radio stations in Sweden, Poland, England, Hawaii, California and on Long Island.