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Self-regulating heater. A positive-temperature-coefficient heating element (PTC heating element), or self-regulating heater, is an electrical resistance heater whose resistance increases significantly with temperature. The name self-regulating heater comes from the tendency of such heating elements to maintain a constant temperature when ...
The Pennsylvania Turnpike Commission (PTC) is an agency created in 1937 to construct, finance, operate, and maintain the Pennsylvania Turnpike (both the mainline and the Northeast Extension). The commission consists of five members. Four members are appointed by the Governor of Pennsylvania, while the fifth member is the Pennsylvania Secretary ...
PTC Inc. (formerly Parametric Technology Corporation) is a computer software and services company founded in 1985 and headquartered in Boston, Massachusetts. The company was a pioneer in parametric, associative feature-based, solid computer-aided design (CAD) modeling software in 1988, including an Internet-based product for Product Lifecycle ...
A thermistor is a semiconductor type of resistor whose resistance is strongly dependent on temperature, more so than in standard resistors. The word thermistor is a portmanteau of thermal and resistor.
Modern United States wind energy policy coincided with the beginning of modern wind industry of the United States, which began in the early 1980s with the arrival of utility-scale wind turbines in California at the Altamont Pass wind farm. [ 1] Since then, the industry has had to endure the financial uncertainties caused by a highly fluctuating ...
Positive train control. A Metrolink locomotive decal on an MP36PH-3C stating that it is equipped with positive train control technology. Positive train control (PTC) is a family of automatic train protection systems deployed in the United States. [1] Most of the United States' national rail network mileage has a form of PTC.
www.ptc.edu. Piedmont Technical College is a public community college with its main campus in Greenwood, South Carolina. It serves seven counties in the Lakelands region of South Carolina. Six additional County Centers also serve students in Abbeville County, Edgefield County, Laurens County, McCormick County, Newberry County, and Saluda County.
Creo Parametric is a parametric, feature-based modeling architecture incorporated into a single database philosophy with rule-based design capabilities. It provides in-depth control of complex geometry. The capabilities of the product can be split into the three main headings of Engineering Design, Analysis and Manufacturing.