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The carbon film resistor has an operating temperature range of −55 °C to 155 °C. It has 200 to 600 volts maximum working voltage range. It has 200 to 600 volts maximum working voltage range. Special carbon film resistors are used in applications requiring high pulse stability.
New York City's Radio Row, which existed from 1921 to 1966, was a warehouse district on the Lower West Side of Manhattan, New York City. Major firms that started there include Arrow Electronics, Avnet (founded by Charles Avnet in 1921), and Schweber Electronics.
They also sold specialty test equipment for the ham radio market, including signal generators and grid dip oscillators. [ 3 ] First located at 84 Withers Street in Brooklyn , New York , [ 4 ] and later at 33-00 Northern Boulevard in Long Island City , [ 5 ] EICO produced hi-fi products in the early 1950s to the mid-1960s with a line of tuners ...
Western Electric Co., Inc. was an American electrical engineering and manufacturing company that operated from 1869 to 1996. A subsidiary of the AT&T Corporation for most of its lifespan, Western Electric was the primary manufacturer, supplier, and purchasing agent for all telephone equipment for the Bell System from 1881 until 1984, when the Bell System was dismantled.
Hammarlund Comet Pro. The first Hammarlund plant was a loft operation engaged in radio component manufacturing on Fulton Street in Lower Manhattan, New York City.Their variable capacitor designs quickly became industry standards, and the component's schematic symbol was adopted as the company's logo.
Brian Asparro, chief operating officer of CarbonQuest, stands in a production room where liquid carbon dioxide is converted from a byproduct of a natural gas fired water boiler to a salable ...
A TRF receiver using a grid leak detector (V1) Early applications of triode tubes (Audions) as detectors usually did not include a resistor in the grid circuit.[3] [4] [5] First use of a resistance in the grid circuit of a vacuum tube detector circuit may have been by Sewall Cabot in 1906.
The type 36 screen-grid tube (obsolete since the mid-1930s) had a non-regenerative detection gain (audio frequency plate voltage divided by radio frequency input voltage) of only 9.2 at 7.2 MHz, but in a regenerative detector, had detection gain as high as 7,900 at critical regeneration (non-oscillating) and as high as 15,800 with regeneration ...