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]. | ||
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]. | ||