Cov teeb duab hluav taws xob tsawg tsawg uas ua tawm ntawm duab hluav taws xob infrared muaj qhov sib xws nrog pom lub teeb pom kev. Nws cov haujlwm tsim nyog voltage yog nyob ib ncig ntawm 1.4v thiab tam sim no feem ntau me dua 20mA. Cov kev txwv tam sim no feem ntau txuas nrog rau hauv cov hluav taws xob hauv infrared LED Circuit Court los kho cov voltages, pab cov LEDs hloov kho rau cov kev ua haujlwm sib txawv.
Thaum siv duab hluav taws xob infrared tswj hwm tus neeg siv xov xwm, qhov ntsuas nrug nyob hauv tus piv ncaj ncaj nrog lub zog hluav taws xob. Txhawm rau kom ntev nws txoj kev tswj kev deb, infrared LED yuav tsum tau ua haujlwm hauv qab lub xeev li kev sib kis zoo ntawm qhov sib txawv ntawm lub teeb nrig (hloov dua siab tshiab lub teeb) yog nyob rau hauv cov hluav taws xob nrog cov cua ntsig txog tam sim no ntawm cov mem tes. Yog li, los ntawm nce tus nqi siab tshaj plaws (Ip) ntawm cov pulses, qhov deb ntawm lub teeb duab hluav taws xob tseem tuaj yeem ua kom ntev. Ib txoj hauv kev los txhim kho Ip yog txo lub luag haujlwm ntawm lub luag haujlwm ntawm cov mem tes; uas yog los txo qhov dav ntawm cov mem tes (T). Lub luag haujlwm ntawm txoj haujlwm ntawm cov mem tes ua haujlwm rau qee qhov xim xim TV's infrared remote controllers yog thaj tsam ntawm 1 / 3-1 / 4; thiab rau qee qhov lwm yam khoom siv hluav taws xob, lub luag haujlwm ntawm lub infrared chaw taws teeb tswj tau txawm tias me npaum li 1/10. Los ntawm kev txo qhov feem xyuam ntawm cov mem tes, lub teeb deb ntawm lub zog me me infrared LED kuj tseem tuaj yeem nce nyob rau hauv qhov loj. Ordinary infrared LEDs tuaj yeem muab faib ua peb yam hauv qab no: lub zog me ib (1mW-10mW), lub zog nruab nrab LED (10mW-50mW) thiab lub zog loj LED (50mW-100mW thiab sab saud). Lub teeb ci hluav taws xob tuaj yeem tsim los ntawm kev ntxiv cov mem tes voltage nrog cov zaus ntawm ntawm kev tsav tsheb diode.
Tus maub los nrog infrared LED tuaj yeem tso duab hluav taws xob infrared coj los tswj kev sib txuas ntawm chav tsev, thiab ntawm chav tswj kav qhov kawg, tseem muaj qhov cuab yeej txais los tig lub teeb infrared rau hauv hluav taws xob, xws li infrared lub teeb txais diode, photoelectric triode thiab lwm yam. Emitting thiab tau txais sib txuam nrog infrared diode tau kuj tau thov hauv kev siv.
Muaj ob hom emitting-txais kev qhia rau infrared LED thiab chav tswj tsev, ib qho yog hom teeb tsa ncaj qha, thiab lwm qhov tab tom tsom teeb hom. Hauv qhov ncaj qha kev teeb tsa, cov emitting diode thiab qhov tau txais diode tau nruab rau hauv qhov kawg thiab chav tswj kav xaus feem, nrog qee qhov kev ncua deb ntawm lawv. Raws li qhov xav tau ntawm lub teeb pom kev zoo, lub teeb pom kev zoo thiab cov diode txais yuav nyob rau hauv parallel. Tsuas yog thaum lub sijhawm infrared rays ua los ntawm diode tau xav txog los ntawm ib yam dab tsi tuaj yeem txais cov diode tau txais cov duab ci duab hluav taws xob, yog li ua kom lub zog tswj tau ua haujlwm. Dhau li ntawm, infrared emitting Circuit Court nrog ob chav diodes dais siab zog dua thiab ua haujlwm ntev nrug.
Infrared LED chips nrog sib txawv wavelengths tuaj yeem siv rau hauv cov khoom siv dav siv, piv txwv:
1. Infrared LED nti nrog nthwv dej ntawm 940nm: haum rau siv rau hauv cov chaw taws teeb, xws li cov chaw taws teeb tswj rau cov khoom siv hauv tsev.
2. 808nm: haum rau siv nyob rau hauv cov cuab yeej siv kho mob, qhov chaw sib txuas lus kho qhov muag, duab teeb ci teeb pom kev zoo thiab cov chaw tso dej tawm ntawm lub zog-lub xeev lasers.
3. 830nm: haum rau siv nyob rau hauv lub tshuab txais daim npav nyeem ntawv nws txoj hauv kev.
4. 840nm: haum rau siv hauv cov xim sib xyaw infrared waterproof video koob yees duab.
5. 850nm: haum rau siv hauv cov koob yees duab video uas tau thov hauv kev thaij duab digital, kev saib xyuas system, lub xov tooj qhov rooj, kev ntsuas lub suab thiab lwm yam.
6. 870nm: haum rau siv hauv koob thaij duab hauv khw thiab chaw hla kev.
