Electronics (Mike Jaroch)

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N

NAND

A logic function of A and B that is true if either A or B is false [13].

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NAND CIRCUIT

A combination of a NOT function and an AND function in a binary circuit that has two or more inputs and one output. The output is logic 0 only if ALL inputs are logic 1; it is logic 1 if ANY input is logic 0 [13].

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NATURAL FREQUENCY

See RESONANT FREQUENCY [9].

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NATURAL HORIZON

The line-of-sight horizon [10].

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NAUTICAL MILE

The length of a minute of arc of a great circle of the earth (6,076 ft) [18].

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NAUTICAL RADAR MILE

See RADAR MILE [18].

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NEAR SYNCHRONOUS ORBIT

An orbit in which the satellite rotates close to but not exactly at the same speed as the earth [17].

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NEGATION

The process of inverting the value of a function or variable [13].

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NEGATIVE ALTERNATION

That part of a sine wave that is below the reference level [2] [10] [12].

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NEGATIVE CLAMPER

A circuit that clamps the upper extremity of the output waveshape to a dc
potential of 0 volts [9].

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