Photocell, yomwe imadziwikanso kuti photoresistor kapena light-dependent resistor (LDR), ndi mtundu wa resistor umene umasintha kukana kwake kutengera kuchuluka kwa kuwala komwe kumagwera.Kukaniza kwa photocell kumachepa pamene mphamvu ya kuwala ikuwonjezeka komanso mosiyana.Izi zimapangitsa ma photocell kukhala othandiza pamagwiritsidwe osiyanasiyana, kuphatikiza masensa a kuwala, nyali za mumsewu, mita yowunikira makamera, ndi ma alarm akuba.
Ma Photocell amapangidwa ndi zinthu monga cadmium sulfide, cadmium selenide, kapena silicon yomwe imawonetsa photoconductivity.Photoconductivity ndi kuthekera kwa zinthu kusintha madulidwe ake amagetsi akakhala ndi kuwala.Kuwala kukagunda pamwamba pa photocell, kumatulutsa ma elekitironi, omwe amawonjezera kuyenda kwapano kudzera muselo.
Ma Photocell atha kugwiritsidwa ntchito m'njira zosiyanasiyana kuwongolera mabwalo amagetsi.Mwachitsanzo, atha kugwiritsidwa ntchito kuyatsa nyale kukakhala mdima ndi kuzimitsanso kuyatsanso.Atha kugwiritsidwanso ntchito ngati sensa kuwongolera kuwala kwa chinsalu chowonetsera kapena kuwongolera liwiro la mota.
Ma Photocell amagwiritsidwa ntchito kwambiri panja chifukwa amatha kupirira zovuta zachilengedwe monga kutentha kwambiri, chinyezi, ndi kuwala kwa UV.Zimakhalanso zotsika mtengo, zomwe zimawapangitsa kukhala njira yotsika mtengo pamapulogalamu ambiri.
Pomaliza, ma photocell ndi osinthika komanso ogwiritsidwa ntchito kwambiri pamakampani opanga zamagetsi.Amakhala ndi zomangamanga zosavuta komanso zotsika mtengo, zomwe zimawapangitsa kukhala odziwika bwino pamapulogalamu ambiri, kuphatikiza masensa a kuwala, magetsi apamsewu, mita yowunikira kamera, ma alarm akuba, ndi zina zambiri.
Nthawi yotumiza: Feb-07-2023