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Most commercial DC loads are equipped with microprocessor front end circuits that allow the user to not only program a desired current through the load ('constant current' or CC), but the user can alternatively program the load to have a constant resistance (CR) or constant power dissipation (CP).
Long distance HVDC lines carrying hydroelectricity from Canada's Nelson River to this converter station where it is converted to AC for use in southern Manitoba's grid. A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems. [1]
High Voltage Maintenance Services [45] 1995 eti/ERS USA Electrical Engineering & Testing [47] 1990 Control Concepts USA Transient Voltage Surge Suppression (TVSS) [48] 1988 ASTEC Power: USA AC-DC & DC-DC Power Supplies [45] 1983 Programmed Power Corporation USA Uninterruptible Power Supply (UPS) [49]
Technical Services for Electronics [44] Engineered interconnect solutions July 1, 2010 Haydon Enterprises [45] High-precision motion control products Aug 19, 2010 American Reliance's Power Division [46] Direct current power supplies and electronic loads Nov 9, 2010 Atlas Material Testing Technology [47] Weathering test instruments April 28, 2011
Essentially, a chopper is an electronic switch that is used to interrupt one signal under the control of another. In power electronics applications, since the switching element is either fully on or fully off, its losses are low and the circuit can provide high efficiency. However, the current supplied to the load is discontinuous and may ...
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Power electronics is the application of electronics to the control and conversion of electric power. The first high-power electronic devices were made using mercury-arc valves. In modern systems, the conversion is performed with semiconductor switching devices such as diodes, thyristors, and power transistors such as the power MOSFET and IGBT ...
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