phototimerphototransistorphototube photoelectric tubephotovoltaicphotovoltaic offectphsae detector phase discriminator phase to voltage converterphthalocyanice q switchingphtoconductionphysicalphysical layerphysical mediumphysical opticsphysical quantityphysical unitphysical variblepipi fiterpi modepi networkpi pointpi quantapick off pointspickuppickup arm tone armpickup current pull in currentpickup spectral characteristicpickup value pull in valuepickup voltagepicopico amperepicoammeterpicofarad puffpicosecondpicowattpictorial wiring diagrampictuer inversionpicturepicture beampicture brightnesspicture carrier luminance carrierpicture drightnesspicture elementpicture frequencypicture line amplifier outputpicture line standardpicture monitorpicture phonepicture qualitypicture resolutionpicture signal
