Lub teeb Source thiab Illumination System ntawm Microscope
Lub teeb qhov chaw thiab illumination system muab lub teeb rau illuminating cov qauv. Microscopes siv ob hom teeb pom kev zoo: lub teeb ntuj thiab hluav taws xob qhov chaw. Rau microscopes siv lub teeb ntuj, lub teeb qhov system tsuas muaj ib daim iav, tseem hu ua reflector. Nws yog mounted rau ntawm caj npab hauv qab lub condenser. Daim iav muaj ob qhov chaw reflecting: ib lub dav hlau thiab ib qho concave. Nws tuaj yeem hloov tau dawb do ob leeg horizontally thiab vertically. Nws lub luag haujlwm tseem ceeb yog hloov pauv lub teeb pom kev nyob ib puag ncig (qhov concave sab kuj tseem muaj qee yam teeb pom kev zoo) coj lub teeb mus rau condenser lens.
Feem ntau niaj hnub microscopes yog illuminated los ntawm hluav taws xob qhov chaw. Lawv lub teeb pom kev zoo yog tsim los ntawm lub teeb ci teeb ci hluav taws xob, lub teeb ci teeb pom kev zoo, lens, iav, condenser lens thiab lwm yam khoom. Tag nrho cov teeb pom kev zoo yog sib sau ua ke hauv lub teeb vaj tsev. Tungsten teeb los yog tungsten halogen teeb feem ntau yog siv los ua lub teeb pom kev zoo, nrog lub zog ntsuas ntawm ntau tshaj kaum watts mus rau kaum tawm watts. Lub teeb ci teeb pom kev zoo feem ntau ua haujlwm ntawm qhov tsis tshua muaj hluav taws xob hauv qab 12 V nrog qhov hloov tau qhov hluav taws xob kom sib txawv lub teeb ci. Lub teeb siv hluav taws xob feem ntau yog muab tso rau hauv lub teeb hluav taws xob. Kho tus regulator tau yooj yim hloov qhov ci ntawm lub teeb uas tau npaj rau hauv cov qauv.
Circuit configurations rau lub teeb qhov chaw teeb sib txawv. Kev tswj hluav taws xob feem ntau pom tau los ntawm kev kho qhov voltage ntawm thawj winding ntawm lub transformer. Cov txheej txheem feem ntau muaj xws li: hloov cov thawj voltage ntawm lub transformer ntawm switched series resistors ntawm thawj sab; kho tus thawj voltage los ntawm kev tswj lub conduction lub kaum sab xis ntawm lub thyristor siv ib tug unijunction transistor los yog diac.
