parametric amplifier

noun

, Electronics.

1. a device, as an electron tube or transistor, that amplifies a high-frequency input signal by sinusoidally varying the reactance of the circuit.

parametric amplifier

noun

1. 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

Word History and Origins

Origin of parametric amplifier¹

First recorded in 1955–60

Example Sentences

Interdisciplinary in nature and uninhibited in choice, the projects have ranged from analysis and measurements of stresses in hydrofoil struts to operations research in man-machine relationships, from the design of an analog-to-digital converter to the development of statistical predictors of academic success; from feasibility studies of nuclear power plants for isolated loran stations to the synthesis of a steady-state parametric amplifier.

From Time Magazine Archive