Electronics (Mike Jaroch)


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R

RHO

Greek letter "rho" (ρ). Used in the field of electricity and electronics to represent the specific resistance of a substance [4].


RHOMBIC ANTENNA

A diamond-shaped antenna used widely for long-distance, high-frequency
transmission and reception [10].


RIGID COAXIAL LINE

A coaxial line consisting of a central insulated wire (inner conductor) mounted
inside of a tubular outer conductor [10].


RIGIDITY

The tendency of the spin axis of a gyro wheel to remain in a fixed direction in space if no force is applied to it [15].


RING TIME

In radar, the time during which the output of an echo box remains above a specified level [18].


RINGING

RF oscillations caused by shock excitation of a resonant circuit or cavity [18].

RIPPLE FREQUENCY

The frequency of the ripple current. In a full-wave rectifier it is twice the input-line frequency [6].


RIPPLE VOLTAGE

The alternating component of unidirectional voltage. (This component is small
compared to the direct component.) [6]


RL DIFFERENTIATOR

An RL circuit in which the output is taken from the inductor [9].

RL INTEGRATOR

An RL circuit in which the output is taken from the resistor [9].


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