Taw qhia rau lub luag haujlwm ntawm kev hloov fais fab khoom pib tsis kam
Kev xaiv ntawm resistors nyob rau hauv hloov hom fais fab khoom circuent tsis tsuas yog muaj peev xwm los ntawm nruab nrab tam sim no muaj peev xwm tiv thaiv qhov siab tshaj plaws. Ib qho piv txwv yog lub zog ntsuas resistor ntawm hloov cuaj transistor, uas tau txuas nrog hauv cov hloov Mos Tendistor thiab av. Feem ntau, cov nqi tiv thaiv no yog qhov me me heev, thiab cov hluav taws xob siab tshaj plaws tsis tshaj 2V. Nws zoo nkaus li tsis tsim nyog siv cov hluav taws xob siab raws li kev siv fais fab tuag, tab sis tam sim no lub zog ntawm lub caij pib loj dua li tus nqi ib txwm muaj. Nyob rau tib lub sijhawm, kev ntseeg tau ntawm lub resistor kuj tseem ceeb heev. Yog tias nws yog qhib Circuit Court vim qhov kev cuam tshuam tam sim no thaum lub sijhawm hluav taws xob sib npaug zos rau cov khoom siv hluav taws xob sib npaug ntawm ob lub ntsiab lus ntawm cov luam tawm hluav taws xob uas cov resistor nyob, thiab nws yuav tawg. Nyob rau tib lub sijhawm, cov kev sib xyaw Circuit Court ic ntawm cov overcurrent kev tiv thaiv Circuit Court yuav tseem yuav tawg. Vim li no, feem ntau yog 2W hlau zaj yeeb yaj kiab resistor yog xaiv rau lub resistor no. Nyob rau hauv ib co hloov hom hwj huam, 2-4 1}}}}}}}}}}}}}}} tso rau hauv lub hwj chim dissipated, tab sis kom muab kev cia siab. Txawm hais tias ib qho kev tiv thaiv tau puas tsuaj, muaj ob peb yam kom tsis txhob muaj Circuit Court hauv Circuit Court. Ib yam li ntawd, tus qauv resistor rau cov zis hluav taws xob ntawm lub tshuab hloov hluav taws xob kuj tseem ceeb. Thaum lub resistor qhib, tus qauv voltage yog xoom volts, thiab cov kua zis tshaj plaws hauv cov zis hluav taws xob ntawm cov hloov hluav taws xob hloov. Tsis tas li ntawd, muaj cov kev txwv tsis pub dhau los ua rau Opocoudlers (Optocoudlers) thiab lwm yam.
Nyob rau hauv hloov hom fais fab khoom, kev sib txuas ntawm koob ntawm resistors yog ib txwm muaj, tsis tau txhim kho lawv lub peev xwm tiv thaiv hluav taws xob peak pepageage. Feem ntau, tiv nrog hluav taws xob ntawm resistors tsis tseem ceeb heev. Qhov tseeb, tawm tsam nrog lub zog sib txawv thiab qhov tseem ceeb muaj qhov ua haujlwm siab tshaj plaws ua qhov ntsuas hluav taws xob. Thaum nyob ntawm qhov kev ua haujlwm siab tshaj plaws, vim tias qhov kev tiv thaiv siab heev, nws siv hluav taws xob tsis dhau qhov ntsuas tus nqi, tab sis cov tsis kam yuav tseem tawg. Qhov laj thawj yog tias ntau zaj ua yeeb yaj kiab ua yeeb yaj kiab nyias nyias tswj lawv tus nqi tiv taus raws li cov tuab ntawm zaj duab xis. Rau cov neeg tiv taus siab, tom qab zaj duab xis yog sintered, qhov ntev ntawm zaj duab xis yog ncua los ntawm grooves. Qhov siab dua cov txiaj ntsig tsis kam, lub siab dua cov zawj ntom ntom. Thaum siv nyob rau hauv high-voltage voj voog, cov txim taws thiab kev puas tsuaj ntawm grooves, ua rau muaj kev puas tsuaj rau lub resistor. Yog li ntawd, nyob rau hauv hloov hom fais fab khoom, qee zaum ntau cov resorsicors yog txhob txwm txuas nyob rau hauv series los tiv thaiv cov tshwm sim no los ntawm kev tshwm sim. Piv txwv li, pib bias resistor nyob rau hauv ib tug kheej zoo siab hloov lub raj xa hluav taws xob, thiab lub high-voltage part cov khoom siv hauv cov hlau halide lub teeb ballasts, thiab lwm yam.
PTC thiab NTC yog thermal rhiab feem. PTC muaj qhov kub me me kub coefficient, thaum NTC muaj qhov rov qab, nrog cov ntsuas kub tsis zoo. Nws txoj kev tawm tsam thiab kub ampere cov yam ntxwv, thiab tam sim no lub sijhawm kev sib raug zoo yog txawv ntawm cov neeg tsim nyog zoo tib yam. Nyob rau hauv hloov hom fais fab khoom, ptc resistors nrog zoo ntsuas coefficient yog feem ntau siv nyob rau hauv kev ncig uas xav tau cov khoom siv fais fab inantantaneous. Piv txwv li, nws tsav lub PTC siv nyob rau hauv lub zog hluav taws xob Circuit Court ntawm cov kev sib xyaw Circuit Court. Thaum lub hwj chim tig mus, nws cov nqi tiv thaiv qis dua muab cov pib tam sim no rau kev tsav tsheb sib xyaw. Tom qab cov Circuit Court sib xyaw ua cov tso zis rau mem tes, cov ntsuas hluav taws xob hloov hluav taws xob ntawm cov hluav taws xob thiab cov khoom siv fais fab. Thaum lub sijhawm tus txheej txheem no, PTC txiav tawm ntawm lub voj voog pib vim qhov nce ntxiv thaum pib qhov kub tam sim no thiab kev tawm tsam. NTC qhov kub tsis zoo cuam tshuam tau dav siv raws li siv dav tam sim no cov tswv yim tam sim no hauv hloov hom fais fab khoom, hloov cov khoom siv cov khoom siv maj mam. Lawv tsis yog tsuas yog txuag lub zog tab sis kuj txo qis hauv sab hauv qhov chaw nce. Thaum lub caij tig ntawm lub pob hluav taws xob hloov, thawj zaug them tam sim no ntawm lub tshuab lim capator tsis tshua muaj siab, thiab NTC sai sai. Tom qab lub ncov ntxuam ntawm lub capacitor, cov tsis kam ntawm NTC resistor txo qis nyob rau hauv ib txwm muaj kev ua haujlwm tam sim no, thiab txo lub zog siv lub tshuab tag nrho.
Tsis tas li ntawd, Zinc oxide varistors kuj yog siv nyob rau hauv hloov fais fab mov circuits. Zinc oxide varistors muaj qhov tsis tshua muaj hluav taws xob ntau voltage nqus muaj nuj nqi. Qhov loj tshaj plaws tshwj xeeb ntawm varistors yog tias thaum cov voltage thov rau nws yog hauv qab nws yog qhov tam sim no ntws los ntawm nws yog tsawg heev, sib npaug rau lub chaw kaw. Thaum cov voltage ntau dua qhov pib tshaj plaws, tam sim no ntws los ntawm nws surges, sib npaug rau lub valve qhib. Los ntawm kev siv txoj haujlwm no, nws muaj peev xwm los hais txog qhov nquag tshwm sim ntawm kev ua tsis zoo hauv Circuit Court hauv Circuit Court thiab tiv thaiv lub Circuit Court los ntawm kev puas tsuaj los ntawm overvoltage. Cov kab sib txawv feem ntau txuas nrog lub ntsiab lus tseem ceeb ntawm kev hloov lub zog hluav taws xob, uas tuaj yeem nqus cov phiaj xwm siab thiab muab kev tiv thaiv thaum cov hluav taws xob tseem ceeb heev.
