parametric amplifier
noun Electronics.
a device, as an electron tube or transistor, that amplifies a high-frequency input signal by sinusoidally varying the reactance of the circuit.
Origin of parametric amplifier
First recorded in 1955–60
Words nearby parametric amplifier
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British Dictionary definitions for parametric amplifier
parametric amplifier
noun
a type of high-frequency amplifier in which energy from a pumping oscillator is transferred to the input signal through a circuit with a varying parameter, usually a varying reactance