Allen-Bradley: Difference between revisions

Content deleted Content added

Inline

Revision as of 08:10, 17 November 2009

Allen-Bradley is the brand-name of a line of Factory Automation Equipment manufactured by Rockwell Automation (NYSE ROK). The company, with revenues of approximately US$4.5 billion in 2006, manufactures programmable automation controllers (PAC, PLC), human-machine interfaces, sensors, safety components and systems, software, drives and drive systems, contactors, motor control centers, and systems made of these and similar products. Rockwell Automation also provides asset management services including repair and consulting. Rockwell Automation's headquarters is based in Milwaukee, WI.

As an interesting sidenote, the Allen-Bradley Clock Tower is a Milwaukee landmark featuring the largest four-sided clock in the world.

History

The company was initially founded as the Compression Rheostat Company by Lynde Bradley and Dr. Stanton Allen with an initial investment of $1,000 in 1903. In 1910 the company was renamed the Allen-Bradley Company. In 1952 they opened a subsidiary in Galt, Ontario, Canada that now employs over 1000 people. In 1985 a new company record was set as they ended the fiscal year with 1 billion dollars in sales. On February 20, 1985 Rockwell International (now Rockwell Automation) purchased Allen-Bradley for $1.651 billion, which is the largest acquisition in Wisconsin's history.

Allen-Bradley is a same name associated with low temperature sensors, since a now obsolete line of carbon-composite resistors manufactured by Allen-Bradley show an approximately inversely proportional temperature dependence at low temperatures. This undesirable characteristic for commercial resistors (since an ideal resistor should have no temperature dependence) is suited for cryogenic measurement, which paradoxically has partly helped establish a name for Allen-Bradley among the lay electronic enthusiast. Allen-Bradley resistors are commercially available at a premium, often supplied with calibration data.

Competitors

Allen-Bradley's principal competitors include:

External links

@@ Line 9: / Line 9: @@
 [[File:Allen-Bradley Logo.gif|thumb|150px|left|Logo used by Allen-Bradley prior to its acquisition by [[Rockwell Automation]].]]
-The company was initially founded as the Compression Rheostat Company by [[Lynde Bradley]] and [[Dr. Stanton Allen]] with an initial investment of $1,000 in 1903. In 1910 the company was renamed the Allen-Bradley Company. In 1952 they opened a subsidiary in Galt, Ontario, Canada that now employs over 1000 people. In 1985 a new company record was set as they ended the fiscal year with 1 billion dollars in sales.  On [[February 20]], [[1985]] Rockwell International (now Rockwell Automation) purchased Allen-Bradley for $1.651 billion, which is the largest acquisition in Wisconsin's history.
+The company was initially founded as the ''Compression Rheostat Company'' by [[Lynde Bradley]] and [[Dr. Stanton Allen]] with an initial investment of $1,000 in 1903. In 1910 the company was renamed the ''Allen-Bradley Company''. In 1952 they opened a subsidiary in [[Galt, Ontario]], [[Canada]] that now employs over 1000 people. In 1985 a new company record was set as they ended the [[fiscal year]] with 1 billion dollars in sales. On [[February 20]], [[1985]] Rockwell International (now ''[[Rockwell Automation]]'') purchased Allen-Bradley for $1.651 billion, which is the largest acquisition in [[Wisconsin]]'s history.
-Allen-Bradley is a same name associated with low temperature sensors, since a now obsolete line of carbon-composite resistors manufactured by Allen-Bradley show an approximately inversely proportional temperature dependence at low temperatures. This undesirable characteristic for commercial resistors (since an ideal resistor should have no temperature dependence) is suited for cryogenic measurement, which paradoxically has partly helped establish a name for Allen-Bradley among the lay electronic enthusiast. Allen-Bradley resistors are commercially available at a premium, often supplied with calibration data.
+Allen-Bradley is a same name associated with low [[temperature sensor]]s, since a now obsolete line of carbon-composite [[resistor]]s manufactured by Allen-Bradley show an approximately [[Negative temperature coefficient|inversely proportional temperature dependence]] at low temperatures. This undesirable characteristic for commercial resistors (since an ideal resistor should have no temperature dependence) is suited for cryogenic measurement, which paradoxically has partly helped establish a name for Allen-Bradley among the lay electronic enthusiast. Allen-Bradley resistors are commercially available at a premium, often supplied with [[calibration]] data.
 ==Competitors==