Electronics (Mike Jaroch)

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N

NODE

The fixed minimum points of voltage or current on a standing wave or antenna [10].
 Keyword(s): NODE

NOISE

(1) In reference to sound, an unwanted disturbance caused by spurious waves that originate from man-made or natural sources [10]. (2) In radar, erratic or random deflection or intensity of the indicator sweep that tends to mask small echo signals [18].

 Keyword(s): NOISE

NOISE FIGURE

The ratio of output noise to input noise in a receiver [18].
 Keyword(s): NOISE FIGURE

NOISE LIMITER

Circuit that clips the peaks of the noise spikes in a receiver [17].
 Keyword(s): NOISE LIMITER

NOISE SILENCER

See NOISE LIMITER [17].
 Keyword(s): NOISE SILENCER

NOISE SUPPRESSOR

See NOISE LIMITER [17].
 Keyword(s): NOISE SUPPRESSOR

NONDEGENERATIVE PARAMETRIC AMPLIFIER

A parametric amplifier that uses a pump signal frequency that is higher than twice the frequency of the input signal [11].

 Keyword(s): NONDEGENERATIVE PARAMETRIC AMPLIFIER

NONDIRECTIONAL

See OMNIDIRECTIONAL [10].
 Keyword(s): NONDIRECTIONAL

NONLINEAR DEVICE

A device in which the output does not rise and fall in direct proportion to the
input [6] [7] [12].

 Keyword(s): NONLINEAR DEVICE

NONLINEAR IMPEDANCE

An impedance in which the resulting current through the device is not
proportional to the applied voltage [12].

 Keyword(s): NONLINEAR IMPEDANCE

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