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词条 General Radio
释义

  1. History

  2. See also

  3. References

  4. Further reading

  5. External links

General Radio Company (later, GenRad) was a broad-line manufacturer of electronic test equipment from 1915 to 2001.

History

On June 14, 1915, Melville Eastham and a small group of investors started General Radio Company in Cambridge, Massachusetts, a few blocks northwest of Massachusetts Institute of Technology.[1] During the 1950s, the company moved to West Concord, Massachusetts, where it became a major player in the automatic test equipment (ATE) business, manufacturing a line of testers for assembled printed circuit boards. It also produced extensive lines of electrical component measuring equipment, sound and vibration measurement and RLC standards. In 1975, the company name was changed to GenRad.

In 1991, a startup QuadTech[2] was founded as spinoff of GenRad's Instrumentation division and Precision Product lines, as well as the rights to use the "GenRad" and "General Radio" names. In 2000, IET Labs[3] acquired from QuadTech, the GenRad RLC standards, impedance decades, megohmmeters, digibridges, audio lines, strobeoscope lines, then in 2005 it purchased the Digibridge and Megohmmeter lines, which continue to be manufactured in West Roxbury, Massachusetts. In 2001, Teradyne acquired the GenRad board test system lines, and was relocated to Teradyne's corporate campus in North Reading, Massachusetts.

Among General Radio's accomplishments over the years have been:

  • The introduction of one of the world's first portable oscilloscopes.
  • The production of many high-precision standards for inductance, resistance, and capacitance.
  • The production of the stroboscope as the Strobotac.
  • The production of the sound level meter.
  • The Variac variable autotransformer, which was a U.S. trademark of General Radio from 1934 to 2001.
  • Invention of the "five-way" binding post connector.
  • Invention of the GR connector.

See also

  • James Kilton Clapp
  • Worldwide Diagnostic System

References

1. ^{{cite web |last1=Burke |first1=C.T. |title=The General Radio Company - No. 5 of a Series of Instrument Company Histories |url=http://www.ietlabs.com/pdf/GR_books/GR%20History%20by%20C.T.%20Burke.pdf |publisher=The Instrument Maker |archiveurl=https://web.archive.org/web/20181218054333/http://www.ietlabs.com/pdf/GR_books/GR%20History%20by%20C.T.%20Burke.pdf |archivedate=December 18, 2018 |date=Nov-Dec 1935 |dead-url=no}}
2. ^QuadTech - About.
3. ^[https://www.ietlabs.com/company_info IET Labs - About.]

Further reading

  • The General Radio Story; Frederick Van Veen; 262 pages; 2006; {{ISBN|978-0615176659}}. (archive)
  • A History of the General Radio Company 1915-1965; Arthur Thiessen; 116 pages; 1965; ASIN B0006CAQII. (archive)

External links

  • General Radio History - Funding Universe
  • General Radio Historical Society - IET Labs
    • [https://www.ietlabs.com/genrad_history/historic_catalogs Product Catalog archive]
    • [https://www.ietlabs.com/genrad_history/historic_manuals Product Manual archive]
    • [https://www.ietlabs.com/genrad/experimenters Experimenter Magazine archive]

6 : Electronics companies of the United States|Electronics companies established in 1915|1915 establishments in Massachusetts|2001 disestablishments in Massachusetts|Electronics companies disestablished in 2001|2001 mergers and acquisitions

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