Zero Power Resistance Value RT (Ω)
RT e bolela boleng ba khanyetso bo lekantsoeng mochesong o itseng oa T ho sebelisa matla a lekantsoeng a bakang phetoho e sa utloahaleng ea boleng ba khanyetso bo amanang le phoso eohle ea tekanyo.
Kamano lipakeng tsa boleng ba khanyetso le phetoho ea mocheso oa likarolo tsa elektroniki ke tse latelang:
RT = RN expB(1/T – 1/TN)
RT: Khanyetso ea thermistor ea NTC mocheso oa T (K).
RN: NTC thermistor resistance to rated TN (K).
T: Mocheso o boletsoeng (K).
B: Material constant of NTC thermistor, eo hape e tsejoang e le thermal sensitivity index.
exp: exponent e ipapisitse le nomoro ea tlhaho e (e = 2.71828…) .
Kamano e na le matla 'me e na le tekanyo ea ho nepahala feela ka har'a mefuta e fokolang ea mocheso o lekantsoeng oa TN kapa RN e lekantsoeng, kaha thepa e sa fetoheng ea B ka boeona ke ts'ebetso ea mocheso oa T.
E lekantsoe Zero Power Resistance R25 (Ω)
Ho ea ka maemo a naha, boleng ba ho hanyetsa matla a zero ke boleng ba ho hanyetsa R25 bo lekantsoeng ke thermistor ea NTC ka mocheso oa boitsebiso oa 25 ℃.Boleng bona ba khanyetso ke boleng ba ho hanyetsa ka lebitso ba thermistor ea NTC.Hangata ho boletse NTC thermistor hore na boleng ba khanyetso bo bokae, e boetse e bua ka boleng.
Material Constant (thermal sensitivity index) boleng ba B (K)
Maemo a B a hlalosoa e le:
RT1: Ho hanyetsa matla a Zero mocheso oa T1 (K).
RT2: Boleng ba ho hanyetsa matla a zero mocheso oa T2 (K).
T1, T2: Lithempereichara tse peli tse boletsoeng (K).
Bakeng sa lithermistara tse tloaelehileng tsa NTC, boleng ba B bo tloha ho 2000K ho isa ho 6000K.
Zero Power Resistance Temperature Coefficient (αT)
Karo-karolelano ea phetoho e lekanyelitsoeng ho hanyetsa matla a zero ea thermistor ea NTC ka mocheso o itseng ho phetoho ea mocheso e bakang phetoho.
αT: mocheso o hanyetsanang le matla a zero mocheso oa mocheso oa T (K).
RT: Boleng ba ho hanyetsa matla a zero mocheso oa T (K).
T: Mocheso (T).
B: Lintho tse sa fetoheng.
Phatlalatso Coefficient (δ)
Ka mocheso o itseng oa tikoloho, coefficient ea ho lahla ea thermistor ea NTC ke karo-karolelano ea matla a felisitsoeng ka har'a mohanyetsi ho ea ho phetoho e lumellanang ea mocheso oa mohanyetsi.
δ : coefficient ea ho qhala ea thermistor ea NTC, (mW/ K).
△ P: Matla a sebelisoang ke NTC thermistor (mW).
△ T: Thermistor ea NTC e sebelisa matla △ P, phetoho e lumellanang ea mocheso oa 'mele oa ho hanyetsa (K).
Thermal Time Constant of Electronic Components (τ)
Tlas'a maemo a matla a zero, ha mocheso o fetoha ka tšohanyetso, mocheso oa thermistor o fetola nako e hlokahalang bakeng sa 63.2% ea liphapang tse peli tsa pele tsa mocheso.Nako ea mocheso e sa fetoheng e lekana le matla a mocheso a thermistor ea NTC 'me e fapana ka tsela e fapaneng le coefficient ea eona ea ho lahla.
τ : nako ea mocheso e tsitsitseng (S).
C: Matla a mocheso a thermistor ea NTC.
δ : coefficient ea ho qhala ea thermistor ea NTC.
Rated Power Pn
Tšebeliso ea matla e lumelletsoeng ea thermistor ts'ebetsong e tsoelang pele ka nako e telele tlasa maemo a botekgeniki a boletsoeng.Tlas'a matla ana, mocheso oa 'mele oa ho hanyetsa ha o fete mocheso oa oona o moholo oa ho sebetsa.
Boholo ba mocheso oa ho sebetsaTmax: mocheso o phahameng ka ho fetisisa oo thermistor e ka sebetsang ka nako e telele ka nako e telele tlas'a maemo a khethehileng a tekheniki.Ke hore, T0- Mocheso oa tikoloho.
Likarolo tsa elektronike li lekanya matla Pm
Ka mocheso o boletsoeng oa tikoloho, boleng ba ho hanyetsa ba 'mele oa ho hanyetsa o futhumetseng ke tekanyo ea hona joale ea tekanyo e ka hlokomolohuoa mabapi le phoso eohle ea tekanyo.Ka kakaretso ho hlokahala hore phetoho ea boleng ba khanyetso e be kholo ho feta 0.1%.
Nako ea poso: Mar-29-2023