Search results
Results from the WOW.Com Content Network
Cross section of a GaAs/AlGaAs/InGaAs pHEMT Band diagram of GaAs/AlGaAs heterojunction-based HEMT, at equilibrium.. A high-electron-mobility transistor (HEMT or HEM FET), also known as heterostructure FET (HFET) or modulation-doped FET (MODFET), is a field-effect transistor incorporating a junction between two materials with different band gaps (i.e. a heterojunction) as the channel instead of ...
Two-phase power can be derived from a three-phase source using two transformers in a Scott connection: One transformer primary is connected across two phases of the supply. The second transformer is connected to a center-tap of the first transformer, and is wound for 86.6% of the phase-to-phase voltage on the three-phase system.
One voltage cycle of a three-phase system. A polyphase system (the term coined by Silvanus Thompson) is a means of distributing alternating-current (AC) electrical power that utilizes more than one AC phase, which refers to the phase offset value (in degrees) between AC in multiple conducting wires; phases may also refer to the corresponding terminals and conductors, as in color codes.
Two-phase may refer to: Two-phase electric power; Two-phase commit protocol; Two-phase flow; Two-phase locking; Binary phase, chemical compounds composed of two elements
The most common three-phase system will have three hot legs, 208 V to each other and 120 V each to the neutral. An older, but still widely used, high-leg delta system uses three phases with 240 volts phase-to-phase for motor loads, and 120 volts for lighting loads by use of a center-tapped transformer; two of the phases are 120 volts to neutral ...
IGZO's advantage over zinc oxide is that it can be deposited as a uniform amorphous phase while retaining the high carrier mobility common to oxide semiconductors. [11] The transistors are slightly photo-sensitive , but the effect becomes significant only in the deep violet to ultra-violet ( photon energy above 3 eV ) range, offering the ...
College Football Playoff players to watch, key to the Sugar Bowl: No. 7 Notre Dame vs. No. 2 Georgia. Nick Bromberg. December 30, 2024 at 6:15 AM.
Language links are at the top of the page. Search. Search