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A VFD operates on the principle of cathodoluminescence, roughly similar to a cathode-ray tube, but operating at much lower voltages. Each tube in a VFD has a phosphor-coated carbon anode that is bombarded by electrons emitted from the cathode filament. [1] [2] In fact, each tube in a VFD is a triode vacuum tube because it also has a mesh ...
Main article: Information technology in India TCS Office at SIPCOT, Siruseri Cyber Gateway Madhapur Hyderabad near Raheja Mindspace TCS at Voltas House, Jamshedpur Wipro headquarters at Sarjapura Road, Electronic City, Bengaluru This is a list of notable companies in the information technology sector based in India. Top Indian companies are listed in descending order of their market ...
Small variable-frequency drive Chassis of above VFD (cover removed). A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable voltage variable frequency drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the ...
Ellora Engineering Co. Pvt. Ltd. was founded by Neelkanth A. Kalyani in 1979, and began commercial production of forgings in 1981. The company was renamed Kalyani Forge Limited in 1992. Kalyani Forge was the first forging company in India to have entire press technology as opposed to hammers which were more common at that time.
In vector control, an AC induction or synchronous motor is controlled under all operating conditions like a separately excited DC motor. [21] That is, the AC motor behaves like a DC motor in which the field flux linkage and armature flux linkage created by the respective field and armature (or torque component) currents are orthogonally aligned such that, when torque is controlled, the field ...
KPIT Technologies Limited is an Indian multinational corporation which provides engineering research and development (ER&D) services to automotive companies. The company is headquartered in Pune and has development centers in Europe , USA , Japan , and China , apart from India.
Persistent's Pingala-Aryabhata campus in Pune. Persistent Systems was founded in 1990 by Anand Deshpande, a former Hewlett-Packard employee, with an investment of $21,000. In 2000, Intel Capital invested $1 million in the company for a 3.5% stake. [4]
Futaba Corporation (双葉電子工業株式会社, Futaba Denshi Kōgyō Kabushiki-gaisha) is a Japanese company founded in 1948, originally to produce vacuum tubes. [3] As time passed, production and elemental techniques of the vacuum tube transformed into the manufacturing of vacuum fluorescent displays (VFDs), tool and die set components, radio control equipment and OLED displays.