Saturday, 27 April 2024, 6:29 PM
Site: edulabs.org academy
Course: Activity Examples (Activity Examples)
Glossary: Electronics (Mike Jaroch)
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PHASE SPLITTERA device that provides two output signals from a single input signal. The two output signals differ from each other in phase (usually by 180 degrees) [8]. |
PHASE-SHIFT DISCRIMINATORSee FOSTER-SEELEY DISCRIMINATOR [12]. |
PHASE-SHIFT KEYINGSimilar to ON-OFF cw keying in AM systems and frequency-shift keying in FM systems. Each time a mark is received, the phase is reversed. No phase reversal takes place when a space is received [12]. |
PHOSPHORThe material used to convert the energy of electrons into visible light [6]. |
PHOTOCELLA light-controlled variable resistor which has a light-to-dark resistance ratio of 1:1000. Used in various types of control and timing circuits [7]. |
PHOTODIODEA light-controlled PN junction. Current flow increases when the PN junction is exposed to an external light source [7]. |
PHOTOELECTRIC VOLTAGEA voltage produced by light [1]. |
PHOTOETCHINGChemical process of removing unwanted material in producing printed circuit boards [14]. |
PHOTOTRANSISTORAn optoelectronic device that conducts current when exposed to light. Produces more current and is much more sensitive to light than the photodiode [7]. |
PHOTOVOLTAIC CELL(SOLAR CELL)—A device that acts much like a battery when exposed to light and converts light energy into electrical energy [7]. |