Electronics (Mike Jaroch)
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DISPLACEMENT CURRENTThe current that appears to flow through a capacitor [2]. | ||
DISTILLED WATERWater that has been purified through a process of evaporation and condensation [18]. | ||
DISTORTIONAny unwanted change between an input signal and output signal [6] [8]. | ||
DISTRIBUTED CONSTANTSThe constants of inductance, capacitance, and resistance in a transmission line. They are spread along the entire length of the line and cannot be distinguished separately [10]. | ||
DOMAIN THEORYA theory of magnetism based upon the electron-spin principle. Spinning electrons have a magnetic field. If more electrons spin in one direction than another, the atom is magnetized [1]. | ||
DOMINANT MODEThe easiest mode to produce in a waveguide, and the most efficient mode in terms of energy transfer [11]. | ||
DONORAn impurity that can make a semiconductor material an N-type by donating extra "free" electrons to the conduction band [7]. | ||
DONOR IMPURITYSee PENTAVALENT IMPURITY [7]. | ||
DOORKNOB TUBEAn electron tube that is similar to the acorn tube but larger. The doorknob tube is designed to operate, at high power, in the uhf frequencies [6]. | ||