## Electronics (Mike Jaroch)

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### R

#### RATIO OF TRANSMITTED POWERS

The power ratio (FSK versus AM) that expresses the overall improvement of FSK transmission when compared to AM under rapid-fading and high-noise conditions
[12].

 Keyword(s): RATIO OF TRANSMITTED POWERS

#### RC CONSTANT

Time constant of a resistor-capacitor circuit; equal in seconds to the resistance value in ohms multiplied by the capacitance value in farads [2] [9].

 Keyword(s): RC CONSTANT

#### RC DIFFERENTIATOR

An RC circuit in which the output is taken from the resistor [9].
 Keyword(s): RC DIFFERENTIATOR

#### RC FILTER

A filter used in applications where load current is low and constant, and voltage regulation is not necessary [7].

 Keyword(s): RC FILTER

#### RC INTEGRATOR

An RC circuit in which the output is taken from the capacitor [9].
 Keyword(s): RC INTEGRATOR

#### RC NETWORK

A circuit containing resistance and capacitance arranged in a particular manner to perform a specific function [9].

 Keyword(s): RC NETWORK

#### RC OSCILLATOR

An oscillator in which the frequency is determined by resistive and capacitive
elements [9].

 Keyword(s): RC OSCILLATOR

#### REACTANCE

The opposition offered to the flow of an alternating current by the inductance,
capacitance, or both, in any circuit [2].

 Keyword(s): REACTANCE

#### REACTANCE AMPLIFIER

A low-noise amplifier that uses a nonlinear variable reactance as the active
element instead of a variable resistance. Also called a parametric amplifier [11].

 Keyword(s): REACTANCE AMPLIFIER

#### REACTANCE TUBE

A tube connected in parallel with the tank circuit of an oscillator. Provides a signal that will either lag or lead the signal produced by the tank [12].

 Keyword(s): REACTANCE TUBE

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