Friday, 26 April 2024, 8:29 PM
Site: edulabs.org academy
Course: Activity Examples (Activity Examples)
Glossary: Electronics (Mike Jaroch)
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REFRACTIONThe changing of direction of a wave as it leaves one medium and enters another medium of a different density [10] [18]. |
REFRACTIVE INDEXIn a wave-transmission medium, the ratio between the phase velocity in free space and in the medium [11] [18]. |
REGENERATIONSee FEEDBACK [18]. |
REGENERATIVE DETECTORA detector circuit that produces its own oscillations, heterodynes them with an incoming signal, and deflects them [12]. |
REGENERATIVE FEEDBACKThe process by which a portion of the output signal of an amplifying device is fed back in phase to reinforce the input. Also called POSITIVE FEEDBACK [8] [9]. |
REGULATORThe section in a basic power supply that maintains the output of the power supply at a constant level in spite of large changes in load current or input line voltage [6] [7]. |
RELATIVE BEARINGBearing of a target measured in a clockwise direction from "dead ahead" of a ship or plane [18]. |
RELAYAn electromagnetic device with one or more sets of contacts that change position by the magnetic attraction of a coil to an armature [3]. |
RELUCTANCEA measure of the opposition that a material offers to magnetic lines of force [1]. |
REMOTE-CUTOFF TUBEAn electron tube in which the control grid wires are farther apart at the centers than at the ends. This arrangement allows the tube to amplify large signals without being driven into cutoff. This tube is also called a VARIABLE-MU TUBE [6]. |