Emenyezelayo LED: isiqu, inkcazo

Amaxesha amaninzi igcina abathengisa amalungu radio, ingabonwa LED ezibengezelayo. Zahluke ngamandla kunye nombala ukuvutha. LED emenyezelayo (MSD) zifakwa kunye iziqalelo semiconductor umbane ukubetha ezifunekayo ogama rhoqo yi zisanda 1,5-3Gts.

abaqhubi abaninzi radio engahlawulwayo cinga ukuba ezi zixhobo engento kwaye kufuneka kufakwe zalathisi LED enganeno. Mhlawumbi, ngeendlela ezithile banyanisile. Nangona kunjalo, i leDPA nabo banelungelo lokuba khona. Zama ukuqonda ukuba yintoni iingenelo yeemveliso ezinjalo.

Obumbeneyo LED, enyanisweni, iyunithi epheleleyo ezisebenzayo esinenjongo eziphambili - ukutsala ingqalelo, oko ngumsebenzi ukukhanya-umkhosi esandleni sakhe. Kufuneka kuqatshelwe ukuba ubukhulu ezibengezelayo izinto semiconductor musa ziyahluka ukusuka LED Isalathisi eqhelekileyo. Noko ke, nangona ubukhulu bayo compact, kwi-MSD iquka oscillators semiconductor chip, kwakunye nezinye izinto ezongezelelweyo. Ukuba ubume generator ziyilwe kumacandelo radio eqhelekileyo, le uyilo ngebaba a ubukhulu ngokwanelisayo nangokuhloniphekileyo. Kubalulekile ukuphawula ukuba LED ebengezelayo kakhulu jikelele. Ombane unikezelo izinto ezinjalo kuluhlu 1,8-5 V yamacebo ombane aphantsi kunye 3-14 V ngenxa ombane aphezulu. Ifoto ingezantsi ibonisa a ukuqhwanyazaemva LED volts 12.

Izinto eziluncedo MSD:

- uluhlu olubanzi yobonelelo yombane (14 volts);

- ezincinane zobukhulu ngokubanzi ;

- kakhulu isixhobo ukukhanya-siphawula compact;

- imibala eyahlukileyo ifezekiswe. Ezinye zabo ezibengezelayo LED kufuneka ilight eziliqela umbala eyakhelwe-ngaphakathi ezishiyanayo rhoqo ezithile (ezibengezelayo omthubi LED lo moya efotweni eboniswe);

- ukusetyenziswa MSD onesizathu izixhobo ezincinane, apho iimfuno ngokungqongqo ubungakanani amacandelwana power. Ezi ode ngenxa ukujikeleza kwalo elektroniki babehlanganisene kwizakhiwo MOS abe ukusetyenziswa yangoku ephantsi kwi amandla sezingeni eliphezulu wokunciphisa;

- Amazing isixhobo semiconductor nga nokuba indawo unit ezisebenzayo.

Kwi sekethe diagrams MSD umfanekiso mifanekiso yahlukile kwi-LED oluqhelekileyo kwimigca echokoziweyo nje iintolo fanekisela ezibengezelayo iipropati element.

Makhe sihlolisise ngokweenkcukacha ekuyilweni LED ezibengezelayo. Esebenzisa element yezindlu ngaphaya kubonakala, oko kukuthi diode eyakhayo iquka iinxalenye ezimbini. Light chip esikhupha kubekwa phezu ngokususela cathode (negative) electrode kunye nj-generator isekelwe anode (electrode positive). Zonke iindawo isixhobo anxulumene kunye kwo ezintathu zegolide. Chip njini a rhoqo master oscillator eliphezulu esebenza rhoqo, rhoqo yalo ngeenxa 100 kHz. Kananjalo Scheme ezibengezelayo diode nomabi ukho, ndawonye kwimiba ubhalo. It iyahlula ixabiso rhoqo ukuya kwinqanaba 1.5-3 Hz. Ungabuza: "Kodwa kutheni usebenzise eliphezulu-rhoqo wenkunkuma kunye nomabi, kutheni kwakungenakwenzeka ukuba usebenzise oscillator esezantsi rhoqo, yaye ngaloo ndlela lula kuyilo?" Oku kungenxa yokuba ukuba ukuphunyezwa wenkunkuma zobungakanani ephantsi kufuna capacitor capacitance enkulu ngenxa vremyaopredelyayuschey chain. Ukuze kuphunyezwe capacitor esinjalo kufuna indawo omkhulu ngaphezu ngokusetyenziswa ophezulu-frequency generator.

Ngoko Ndajonga ntoni na ezidanyazayo LED. Kwaye phezu umbuzo kuba kokona kulungileyo - okanye zemveli ubuchwepheshe Isalathisi MSD ilight ukuba baphendule ukuba nangona cheapness leyesibini kwakhona ilight ezidanyazayo wafumana imihlaba yabo kunye musa bakhuphisane kunabaphathi be window yakwantu.