Sonntag, 19. Mai 2024, 16:04
Website: edulabs.org academy
Kurs: Activity Examples (Activity Examples)
Glossar: Electronics (Mike Jaroch)
P
PICOA prefix adopted by the National Bureau of Standards meaning 10 -12 [1]. |
PICTORIAL DIAGRAMA diagram showing actual pictorial sketches of the various parts of an equipment and the electrical connections between the parts [4]. |
PIEZOELECTRIC EFFECTThe effect of producing a voltage by placing a stress, either by compression, expansion, or twisting, on a crystal and, conversely, producing a stress in a crystal by applying a voltage to it [1]. |
PIP PIP (BLIP)—On a CRT display, a spot of light or a baseline irregularity representing the radar echo [18]. |
PITCHA term used to describe the frequency of a sound heard by the human ear [10]. |
PLANAR TUBEAn electron tube, constructed with parallel electrodes and a ceramic envelope, that is used at uhf frequencies. It is commonly referred to as a lighthouse tube [6]. |
PLANE OF POLARIZATIONThe plane (vertical or horizontal), with respect to the earth, in which the E field propagates [10]. |
PLANE WAVEFRONTSWaves of energy that are flat, parallel planes and are perpendicular to the direction of propagation [18]. |
PLANNED-POSITION INDICATORA radar display in which range is indicated by the distance of a bright spot or pip from the center of the screen and the bearing is indicated by the radial angle of the spot [18]. |
PLATE(1) One of the electrodes in a storage battery [1]. (2) One of the electrodes in a capacitor [2]. (3) The principal electrode to which the electron stream is attracted in an electron tube [6]. |